Home

- Structural Desktop

Contents

1. PPP STRUCTURAL DESKTOP Appendices Command Line Equivalents Member Information STAAD User Files GT STRUDL User File RISA 3D User File Version History Working with Architectural Desktop Notes for International Users Appendix A Command Line Equivalents All commands have the prefix SD to associate them with Structural Desktop Commands may be entered in upper or lower case or combinations Each command is followed by a brief expansion of the command as a memory aid in parenthesis and an explanation of the command usage Except where noted these commands are available on the Shortcut Menu right click under the Structural Desktop menu heading File Oriented Commands This block of commands allows you to open design files and check or edit those files After you have made changes in Structural Desktop Object Model data you save your changes retrieve your model for later sessions and derive a text file Material Report with a summation of the major structural components of your model SDLOAD LOAD Staad file Provides a standard file dialog box to load a STAAD input file std either from a local drive or mapped network drive SDEDSTAAD EDit STAAD Displays the original STAAD file that was used to create the current model in a popup session of Notepad This command is only available during the first session with a STA
2. 4 do 7 3 JG Figure B 24 5 LH y e Figure 100 B 26 8 3 centroid P LHisi 18 10 0 LHis2 18 11 0 18 Lisa 18 115 11 5 LHI817 18 245 LH1818 18 25 0 LHisi9 18 285 LHi820 18 31 0 LH1821 18 345 LH1822 18 38 0 420 LH1824 18 48 0 1825 18 54 0 10 0 LH2010 20 145 LH2011 20 16 0 Long Span Joists Available in User Files 01 NAME D1 Wr FT NAME D1 Wr FT NAME 01 WT FT LH241 24 95 LH242 24 105 LH243 24 105 LH244 24 11 0 H245 24 110 2 6 24 120 24 13 0 LH248 24 135 LH249 24 145 H2410 24 145 LH2411 24 165 LH2412 24 170 18 0 LH2414 24 21 0 LH2415 24 21 0 2416 24 21 5 LH2417 24 23 0 LH2418 24 25 0 press 23 27 5 7 f aro 31 0 44 0 53 0 10 5 beer 25 114 285 28 11 0 LH2s6 28 120 LH287 28 125 LH2e8 28 130 LH2e9 28 145 ESTE 16 0 TI 4 24 24 24 24 24 5 24 28 28 28 28 28 28 28 28 1 28 28 175 185 28
3. 61 Prismatic reret Bde etek SALES E RU 98 Prismatic REGtan gular we sie re esi S RR 98 Prismatic ChaHge ewes eee ee ee 54 R Reverse ANGES yp Sede Bie es 102 RSA 3D User 12 5 RISA 3D Create e Ses 2 RISA 3D Load nres eee eee Ee EU 25 Rotate AutoCAD 85 S SAP 2000 Create FILS elu wis 31 SAP 2000 Load Filep s dice 30 diede veu e Fu eR I OS 36 SedondaruXxesa w gcnewewa queue yu OE eee m i s 34 NU absum BOS RE ete EL Ce uS 48 Show Toolbar envelopes 39 Solid Object Display e Rr rg 40 STAAD USGL BLES eer Ue TUS 122 STAAD Pro Create gore e amek 93 hae eas 16 STAAD Pro Load File 2 p aS que ees 14 STAAD Pro Member Releases 19 Steel late ee eae uid pre e iere 101 S continued Page Stretch AutoCAD 84 Structural Desktop e nem eee 2 Structural Desktop 1 32 Structure Line Generator p pid 33 T Tables American 141 Tables o sole Me 140 Tables 5 S VUES LERNEN EE ER Steel 141 TAD esa oe aen 114 Tables
4. Load Structural Desktop Hold File Save Structural Desktop File Figure 2 3 Open Structural Desktop Document About Structural Desktop STAAD Interface GTSTRUDL Interface RISA Interface CSI Interface Load Autosave Backup Hold File Recover Hold File Data Y Y Y Y The four Interface Menus contain commands to load and create files from The Research Engineers Inc program STAAD Pro The Georgia Tech program GT STRUDL The RISA Technologies Inc program RISA 3D The Computers and Structures Inc program SAP 2000 Once you have loaded a file from an analytical program loaded a hold file or opened a new document the other menu options will become available that are relevant to model and contract document manipulation and generation Items that are unavailable are shown on the menu as a dark gray against the gray menu and are refered to as being grayed out Structural Desktop LT does not have functions to interface with analytical files but can be used to create a model and create drawings or to read a HOLD file from the unlimited version of Structural Desktop to create drawings and Material Reports The bottom options Load Autosave Backup Hold File and the grayed out Recover Hold File Data are also covered in the section on saving and recovering your work The next sections deal with the Interface Menus Each function to Load an analytical file is examined follo
5. Quick Select Find Options Figure 2 1 If you do not see the Structural Desktop menu item on your computer refer to the Structural Desktop Installation and Getting Started document The program is optimized to run through this menu but the Command Line commands to access Structural Desktop functionality are listed in Appendix A 11 When you first load Structural Desktop the options provided are limited to those that are useful in context For example until you load a file or start a file from scratch you cannot create a hold file Structural Desktop will not accept a DRAWING file The standard AutoCAD menu will tempt you to use the file input routine provided for AutoCAD drawings but you must begin your session with the File menu section under Structural Desktop in order to USE Structural Desktop If you never click on or type any of the Structural Desktop commands your environment continues to be as if you were in an ordinary AutoCAD session You must select a Structural Desktop menu item to begin a session with a Structural Desktop model and then further functions will be made available Figure 2 2 below shows the menu as it appears at the beginning of a session The FILE menu item contains the commands and sub menus to begin working with Structural Desktop Repeat HELP Structural De D General Display Options Other Options Cut Viewing Copy with
6. ordeo e ete ea sd 120 Tables LH e bd slaved ak alo Tha Mae eee Te L1 Tables Selecting Section 25 Tables UK Sele ieu oS eue ue d 140 Tapered Sections I shaped 99 Tapered Sections Piles 101 Tapered Sections 100 lel ok Soe we Gee eere 7 Top of Member civic sess eo ele RR 59 Top of Member MEE 60 SESS a ghee Nau EUR ERE aos see Top of Member Trim AutoCAD command 9 84 U UK Tables ENS So eue d ba ENDE 140 User Files 124 User Files RISA 125 User Files STAAD J4iG Re USE Rise aus 122 View 1 xag RAE 47 View PLANS he we we woe RR RU es 46 Viem Ranges a RR PER UI ON 45 View Selectio n o Re n rere 45 View Hide by Selection 45 4E aree el ue m sudes Mie A ESO T Make xU 44 W Wide Flange eese once 98 2 Z 4 x ue x eR RUE A e EE 103 Zo ZU Membersgy x i4 Be eR ioca gus 106 145
7. Double Angles Double angles are represented by depth width and thickness In addition a spacing factor is given to represent the clearance between the back legs Double angles with short legs back to back and long legs back to back are handled separately within Structural Desktop to give you the flexibility to have these members drawn properly for you In both cases the centroid passes through the space between the angles that make up the double angle centered between the angles and at the center of the depth of the construct 102 Pipe Pipe can be represented either by inside outside diameter or from the standard pipe tables The centroid passes through the center of the pipe just as with cylindrical prismatics see Figure B 2 Light Gage LGSI C and Z Sections The LGSI Light Gage Steel Institute C and Z sections are represented by a naming convention that is derived from the measurements and thickness of the gage of the material The naming convention was designed to fit the requirements of analysis programs C sections are named by the letter C followed by the depth in inches the letter X the width and the gage of the material If the width is a whole number the integer is shown if a fraction the fraction is given without a decimal Figure e g a C section that is 4 by 2 and 16 B 12 gage is C4X216 while a C4X2516 has a depth of 2 5 inches They have a centroid that just as in the case of the Ch
8. 12 6 632 CS113710 11 0 3 750 0 500 0 135 10 8 459 5121614 120 1 625 0 500 0 071 14 3 787 5121612 120 1 625 0 500 0 102 12 5 353 cs123716 12 0 3 750 10 500 0 060 16 4 039 CS123714 12 0 3 750 0 500 0 075 14 5 029 3 750 0 500 0 090 13 6 013 3 750 0 500 0 105 12 6 989 ics123710 12 0 3 750 0 500 0 135 10 8 919 ics143716 14 0 3 750 0 500 0 060 16 4 447 cS143714 14 0 3 750 0 500 0 075 14 5 54 5143713 14 0 3 750 0 500 0 090 13 6 625 143712 14 0 3 750 0 500 0 105 12 7 704 ics143710_ 14 0 3 750 0 500 0 135 10 9 837 5163714 16 0 3 750 0 500 0 075 14 6 05 ics163713 16 0 3 750 0 500 0 090 13 7 238 5163712 16 0 3 750 0 500 0 105 12 8 418 cs163710 16 0 3 750 0 500 0 135 10 10 76 Table 3 107 The Table B 4 at the left and the Figure B 17 below show the names and sizes of the AISI CU members as used in the User Files AISI CU Members Designation Depth Width Thickness Gage WT FT icU151220 1 5 1 240 0 035 20 0 446 icu151218 1 5 1 250 0 045 18 0 572 icu151216 15 1250 0 057 16 0718 icu151214 1 5 1250 0 071 14 0 885 icu251220 25 1250 0 035 20 0 565 icu251218 25 1 250 0 045 18 0725 icu251216 25 1 250 0 057 16 0 912 icu251214 25 1250 0 071 14 1 12
9. 20151218 1 500 1 25 0 048 18 0 609 20151216 1 500 125 0 060 16 0 755 2151214 1 500 125 0075 0 932 20151213 1 500 125 0 090 13 4 109 zu25 220 2 500 125 0036 20 2251218 2 500 125 0048 18 0 772 20251216 2500 125 0 060 16 0 960 20251214 2500 125 0075 1 188 20251213 2 500 1 25 0 090 24361220 3 625 1 25 0036 20 0721 2361218 3625 125 0 048 18 0 956 2061216 3 625 1 25 0 060 1 188 24361214 3 625 1 25 0075 1 477 24361213 3 625 125 0 090 1 759 0 766 zuaxi220 4 000 125 0036 20 Zuax 218 4 000 1 25 0048 18 1017 ZUAX1216 ZUAX1214 ZU4X1213 ZU6X1218 ZU6X1216 ZU6X1214 ZU6X1213 4 000 4 000 4 000 6 000 6 000 6 000 6 000 0 060 125 0 075 14 1572 0 090 1 875 0 048 0 060 0 075 0 090 o 125 0048 18 125 0 060 16 125 0 075 14 125 13 125 2 2 889 2 082 2 593 0 090 13 3100 12 3 604 8 000 110 TRIES dt Figure B 19 Depth The AISI HU members that are provided in the User files are listed in Table B 7 below and refer to the values illustrated in Figure B 20 AISI HU Members Designation Depth Width H1 rhickness Gage WT FT Width Depth 0 105 0 135 0 105 0 105 0 135 0 105 0 105 0 135 0 105 0 105 0 135
10. 46 0 UG3613 36 495 53 5 UG3615 36 61 5 UG3616 36 710 UG3617 36 76 0 luG3618 36 86 0 UG3619 36 101 5 23620 36 130 0 18 5 46402 205 luG4o3 40 220 26404 40 23 5 46405 40 25 0 00406 40 27 0 40 30 0 JG408 40 325 355 264010 40 39 0 004011 40 42 0 24012 40 45 0 490 04014 40 53 5 004015 40 61 5 UuG4016 40 69 5 004017 40 75 5 24018 40 85 5 264019 40 101 0 264020 40 129 0 44 195 21 5 23 0 MG444 44 24 5 96445 44 25 5 285 30 5 44 33 5 44 40 0 MG4411 44 435 MG4412 44 46 5 MG4A13 44 50 5 55 5 JGA4415 44 63 5 464416 44 720 MG4417 44 78 0 464418 44 89 0 464419 44 105 0 464420 44 131 5 19 0 20 0 Gass 48 210 Gasa 48 22 0 240 26 0 yG4s7 48 29 5 Gass 48 320 35 0 JG4810 48 04811 48 410 464812 48 440 46 5 464814 48 54 0 464815 48 59 5 JG4816 48 67 5 JG4817 48 75 5 JG4818 48 83 5 464819 48 99 5 164820 48 124 0 Joist Girders Available in User Files 01 WT FT NAME D1 Wr FT NAME D1 WT FT NAME D1 WT FT JG521 52 19 0 UG522 52 205 UG523 52 215 UG524 52 225 UG5
11. 6 24LB24 24 24 12 12 24LB28 24 28 16 12 24LB32 24 32 20 24LB36 24 36 24 12 24LB40 24 40 24 24LB44 24 44 28 16 24LB48 24 48 32 16 24LB52 24 52 36 16 24LB56 24 56 40 16 WIDTH 24LB60 24 a4 16 H2 112 Concrete T s have a naming convention derived from their depth and width The members have a T prefix This is followed by the Width at the base of the member the letters IT for Inverted Tee beam and the Depth INVERTED TEE BEAMS These members are available in the User files IDesignation Width Depth H1 H2 for your use The centroids are centered on the T both horizontally and vertically Measurements and definitions for these members are further detailed in Table B 4 and Figure B 23 below T 30 44 mca c v 36 20 12 16 WIDTH 3632 36 36736 36 24 23 36152 113 Joist Girders LongSpan and ShortSpan Joists The Joist members in the tables that follow are available to you in the User files The centroid of a joist member is located at the bottom of the bearing plate Please see Tables B 10 1 through B 10 7 and Figures B 24 through B 27 Joist Girders Available in User Files D1 WT FT N
12. 6 416 6 0 4 000 0 75 C6X414 6 0 4 000 0 78 C6X413 6 0 4 000 0 81 2 6 0 4 000 0 89 C7X2516 7 0 2 500 0 75 C10X2514 10 0 2 500 0 78 2 500 0 81 C10X2512 10 0 2 500 0 89 C10X3514 10 0 3 500 0 78 109 200 13 6 C10X3512 10 0 3 500 0 89 12 6 53 C10X414 10 0 4 000 0 78 14 4 89 SITAS 10 0 4000 13 5 99 10 412 10 0 4000 0 89 12 6 89 12X2514 12 0 2 00 0 78 484 12 2513 2500 081 13 567 12X2512 12 3514__ _12 0 3 500 0 78 14 5 15 3500 081 Ci2X3513 12 0 C 7 C7X416 4 000 0 75 C7X414 4 009 0 78 20 4000 0 81 7 412 10 4 ET 0 89 C8X216 EE 2 000 0 75 2 000 0 78 0 81 SET EE 2 500 0 75 mE 2 500 0 78 M 3 0 81 C8X3514 3 500 0 78 0 81 HD 4 000 0 75 c C8X414 8 0 4 000 0 78 C8X413 8 0 4 000 0 81 D C8X412 __8 0 4 000 0 89 O Table B 1 Figure B 13 104 Designation Depth H1 H2 H3 Gage WHET 235 1516 3 51 1 500 1 500 0 74 16 1 58 235 1514 35 1 500 1 500 0 77 14 1 97 24 2516 40 2 375 2 125 0 90 16 206 24 2514 4 0 2375 2 125 092 14 257 Z6X2516 60 2 375 2 125 0 90 16 248 Z6X2514 6 0 2 375 2 125 0 92 14 3 08 Z6X2513 60 2 375 2125 0 95 13 377 26 2512 60 2 375 2125 097 12 434 27 2516 7 0 2 375 2 125 0 9
13. The different data entry text boxes and features of this dialog box are detailed and explained as follows Element Num The Element Numbers of the selected elements Just as in the Change Member Properties box the different values displayed will be those of the element number displayed on this drop down box Changing the current element will update the display but a change to any item in the display will be propagated across the entire set of selected elements Thickness This value displays the thickness of the elements Change this value to change the thickness Density Describes the material used in the structural design Structural Desktop has set values it recognizes for Steel Aluminum Concrete Lightweight Concrete and Wood These values will be used in the Material Report If you change the value of the density the Material text box will reflect that change Material Describes the material used in the structural design Structural Desktop has set values it recognizes for Steel Aluminum Concrete Lightweight Concrete and Wood These values will be used in the Material Report If you change the value of the material the Density text box will reflect that change Joint and Joint Coordinate Boxes These boxes are gray in color because they cannot be edited The values are for your reference and show the 3 or 4 joints that 69 70 are used to create the element These are referred to in the order they are ente
14. X Z File i Create Elevation Y Z Preferences About Structural Desktop Figure 9 1 They enable you to draw the top front and side views of your structure or of any part of your structure that you want to have drawn in a regular 2 Dimensional drawing These commands open a new window in your AutoCAD session and draw two dimensional representations of your structure in that window The more accurate your model the less clean up and modifications have to be made to these extracted drawings before they are checked and released The drawings that are produced are designed so that you may make them available to anyone who uses AutoCAD or a program compatible with AutoCAD Other parties do not have to have a copy of Structural Desktop to take full advantage of an electronic copy of your drawings If another group or engineer does have a copy of Structural Desktop you can send them a hold file and they will be able to take full advantage of your work The output drawings must be saved as drawings but may be saved in any drawing format your version of AutoCAD permits 78 The drawings are drawn quickly enough that if you check them and find that something was left out you can simply close that drawing without saving it make the necessary changes and create the drawing again Each member drawn in a 2D drawing has the name of the member as you have either modified it or not as it appears on the screen when you display Member
15. r3d will be available as shown in the menu section illustrated in Figure 2 23 below Load Structural Desktop File Preferences Save Structural Desktop Hold File Open Structural Desktop Document About Structural Desktop Documentation STAAD Interface GT STRUDL Interface RISA Interface Load RISA 3b File Create RISA 3D File Figure 2 23 CSI Interface Load Autosave Backup Hold File Recover Hold File Data When you select this function you will x invoke the RISA 3D read write program Creating a RISA 3D file that is included with your installation of Pee Structural Desktop The dialog will Select a RISASD File appear as shown in Figure 2 24 at right Note that this dialog has a label that dies displays Creating a RISA 3D file whereas the same dialog states Reading a RISA 3D file in Figure 2 20 Process Figure 2 24 Clicking on the button marked Select RISA 3D File will invoke a standard windows file dialog as shown in Figure 2 25 at left and typing in ANewFile shown will result in the dialog in Figure 2 25 at right SDT RISA Interface i x choose aRIGASD Fle to Greate 35 ES x RISA3D 7 Creating a RISA 3D file Load Out r3d Member kn kip_5 Sr3d DADebug Crosstests Loads RISASD AnewFile r3d Select a RISA 3D File File Title Ready to write file File name AnewFile S
16. Structural Desktop works only with numeric member and plate identifiers Structural Desktop assumes that you will use a letter in the naming of joints members and plates and removes that letter However Structural Desktop also requires that the numbering of each joint be unique within the joints of each member be unique within the members and each plate be unique within the plates Luckily RISA has a Relabel command available either through the menu or by right clicking on the data entry template for joints members and plates We suggest you relabel Joints N1 N Members M1 M and Plates P1 P This will permit unique labeling of each object with a number that is not repeated in objects of the same type 126 Appendix F Version History Changes to Versions 1 7 through 3 0 are documented below Version 1 7 Compiled June 2002 Version 1 7 included the following new concepts commands e The Intersect Break command SDBreak e The OpenSTAAD Interface command OpenSTAAD e The Create 3D ADT Model command SDADTScript Version 1 7 also included the following improvements e Improved interface action for Change Member Parameters dialog box e Improved interface action for Change Joist Parameters dialog box e Changed Fuse functions to distribute changes to a member to the members that compose it This is important because components of a member are written to input files instead of members made up by fusing other members
17. WBEAM 9 W36X135 2 MEMBER PROPERTIES TABLE STRUCTDT JG326 3 MEMBER PROPERTIES TABLE STRUCTDT C9X2512 4 MEMBER PROPERTIES TABLE STRUCTDT T30IT24 5 UNITS INCHES KIPS DEG FAH CONSTANTS E 3 6000002E 03 ALL 1 4400001 03 ALL POI 1 7000000 01 ALL DEN 8 6800006E 05 ALL CTE 5 5000000E 06 ALL 2 9000002E 04 1 5 1 1000001 04 1 5 POI 3 0000001E 01 1 5 DEN 2 8330003E 04 1 5 CTE 6 4999999E 06 1 5 24 Load a RISA 3D Input File If you do not use RISA 3D or RISAFloor from RISA Technologies Inc you may skip this section Load Structural Desktop Hold Fie Preferences Save Structural Desktop Hold File Open Structural Desktop Document STAAD Interface GT STRUDL Interface RISA Interface About Structural Desktop Documentation Load RISA 3D File Greate RISA 3D File CSI Interface Figure 2 19 Load Autosave Backup Hold File Recover Hold File Data Structural Desktop uses the input file from RISA 3D from RISA Technologies Inc as a starting point for model creation This file ends in the three letter extension R3D When you select this option the program will open the dialog box shown in Figure 2 20 below EQ SDT RISA Interface x Reading a RISA 3D file Select a RISA 3D File File Title _ Figure 2 20 This is a new program exclusive to Structural Desktop Version 4 that is invoked by the St
18. as LongSpan Joists This option can be very useful First you can generate accurate point loads for the Joist Girder by applying uniform and other loads to the secondaries Second you can have those members drawn for you in elevations and plan views and labeled automatically If you have taken this route the Joist Girder will have nodes at each intersection Structural Desktop counts the nodes of the members you fuse to create a Joist Girder and creates the Joist Girder with that number of panels for equally spaced support In Figure 5 2 you see two joist girders modeled in envelope form before and after fusing Note that the image on the left is confusing the program is trying to draw a complete joist girder for every sub member Before Fuse Vet After Fuse Figure 5 2 If you count the joists framing into members 70 and 71 you will see that member 70 should have five support points between the ends or six panels or spaces Member 71 supports six joists between the ends for seven panels Figure 5 3 shows how these members are drawn in elevation Note the members shown sitting on top of the equally spaced support points between the panels 33 03 Figure 5 3 64 If you have not fused members or the fused members will not provide the proper equal spacing you may set the database value for the number of spaces in the Spaces box on the Change Joist Parameter dialog bo
19. so changes made to a member that was made out of fused members are now distributed to the input file members e Defusing a member now defuses it totally not incrementally e Completed Generation of STAAD input files to include properties and constants e Completed Generation of GT STRUDL input files to include properties and constants e Additional members for AISC tables Custom Tables Version 1 8 Compiled September 2002 Version 1 8 included the following new concepts commands e The Load SAP 2000 file command SDLoadCSI e The Create SAP 2000 file command SDCTCSI Version 1 8 also included the following improvements e Improved DELETE command to distribute deletion to sub members of a fused member The members were no longer available or accessible but were locked in the database 127 Version 1 9 Compiled February 2003 Version 1 9 included the following new concepts commands e The Create RISA 3D file command SDCTRISA e The Structure Line Generator SDLineWiz Version 1 9 also included the following improvements e Minimum Joint Space Selection permitting the user to specify how close joints can be in a model created by Structural Desktop before they are considered the same model joint Accounted for joints created that can be less than a 1 000 000 of an inch apart due to infinitesimal model discrepancies e Joint Display Size Selection permitting the user to specify the display size of the individual c
20. 0 LH9615 96 34 0 355 LH9617 96 35 5 LH9618 96 35 5 LH9619 96 375 LH9620 96 41 0 LH9621 96 45 5 295 LH9623 96 515 56 5 LH9625 96 63 5 119 Short Span Bar Joists Available in User Files D1 WT FT D1 WT FT D1 WT FT D1 WT FT 120 Short Span Bar Joists Available in User Files Di D1 WT FT NAME D1 WT FT 2818 28 18 5 2819 28 195 2820 28 210 48 2 Ke cM La e K307 30 10 0 30 105 11 0 3010 30 12 0 K3011 30 125 IK3012 14 0 13 30 14 0 14 30 16 0 K3015 3016 30 17 0 IK3017 30 185 3018 30 19 0 19 20 0 K3020 30 22 0 4 121 Appendix C STAAD User Files The STAAD user files are installed on your hard disk at the time that you install Structural Desktop They can also be found on the CD ROM that you used to install Structural Desktop All of the members that are made available to you in these files require further design once the loads and forces associated with those members have been determined Using the members in the user files you can generate the selfweight loads transfer loads and provide a more compl
21. 0 075 1212 8 0 PE 1210 12 0 1 670 HU10X514 10 0 5 0 1 050 0 075 H1 Figure B 20 The centroid of the HU member is treated as if the member were a C or Channel member i e the center of the measurement above marked Width is treated as a back face and the center of that back face is the location of the centroid 111 Concrete L s and Inverted T s Concrete L s have a naming convention derived from their depth and width The members have either an R for right handed or L for left handed prefix This is followed by the Width at the base of the member the letters LB for L Beam and the Depth These members are available in the User files for your use The centroids of the L members are set vertically through the center of the depth Horizontally the centroid runs through the center of the width less the 6 inch cutaway that gives the member its characteristic L shape as shown in Figure B 21 at right Measurements and definitions for these members are further detailed in Table B 8 and Figure B 22 below R18LB20 L18LB20 Designation Width Depth H1 H2 18LB20 18 20 12 8 18LB24 18 24 12 12 18LE28 18 28 16 12 18LB32 18 32 20 18LB36 18 36 24 12 18LB40 18 24 H1 18LB60 18 44 16 LLL LL LLL 24LB20 24 20 12 8
22. 220 LH7e9 78 235 7 1 78 235 LH7811 78 245 7812 78 245 7 13 78 25 0 7 78 25 5 7815 78 26 5 7 16 78 285 7821 78 41 5 7822 78 445 7823 78 46 5 7824 78 5255 7825 78 59 5 Long Span Joists Available in User Files Di D1 WT FT NAME Di WT FT LH841 84 225 LH842 84 225 225 84 225 84 25 5 1 8411 84 26 0 LH8412 26 0 LH8413 84 275 300 LH8415 84 30 0 LH8416 84 325 LH8417 84 33 5 LH8418 84 35 0 1 8419 84 36 5 LH8420 39 0 1 8421 84 43 0 LH8422 84 45 5 LH8423 84 50 0 LH8424 530 8425 84 63 0 LH901 90 23 5 LH902 90 23 5 LH903 90 240 LH904 90 24 0 LH905 90 240 LH906 90 245 LH907 90 25 0 LH908 90 26 0 LH909 90 27 0 LH9010 90 270 26 5 LH9012 90 28 0 LH9013 90 28 5 LH9014 90 30 0 LH9015 90 30 5 LH9016 90 32 0 LH9017 90 34 0 LH9018 90 345 LH9019 9020 90 LH9021 90 LH961 96 29 5 LH962 96 29 5 30 0 LH964 96 30 0 LH965 96 30 0 300 LH967 96 30 5 305 LH969 96 30 5 LH9610 96 30 5 31 5 LH9612 96 31 5 LH9613 96 320 34
23. Change Parameters 69 Element D nsity e e wee m Bee 69 ELement from sie RSS 68 Blbement 933 Ries 69 EMement Node Order 4 ii 70 Element Offsets es ree dex ERE US 70 ELement IhwcknesSs Susie ws 69 Engrish Tables I uerum e bis eter at 140 as 40 EURO Tab aes Balers rec EI wee 141 Extensions 65 s v uve tte dvi qd Bye d eed 49 eU RR 55 G Display RU 2 Re 41 Grid Lines Create 43 ease bee eee E 74 Grid Liness tye es ee eu 75 GT STRUDL 124 GT STRUDL Greate Filep GRO 22 GT STRUDL boad 5 4 Ena ege 21 H HLD X OV NUR eR ere 36 Hord PPP 36 Hollow Steel 102 HU RSS SU es uro E Uie S SiO e 5 5 111 1 Intersect BEAK pts Re Roe 35 Intersect Break 57 Inverted Sew Sieh soe Bele iode Susie 113 J S ridet Os iae 114 JOLSt o Tales eaae ve P UP EAE PS 114 Joists BOX 254 a gv REOS Y 63 K TableS c 99 Ede XR E RU US 120 L MEME 82 Ap den eee ip 55 1651 Sectqionsyy uet
24. Create Alternate Desktop Icons for Architectural Desktop If you already have a Desktop Icon to load Architectural Desktop right click on the icon and select Copy If you do not click the Start button for Windows find the link to Architectural Desktop right click on this item and select Copy Click on a blank portion of your screen right click and select Paste Create a total of Three such Icons by pasting twice on your desktop Right click on each copy and select Rename You may rename them to whatever you find appropriate such as Structural Desktop and SDT to ADT STEP 4 Copy Template Files and Modify First Desktop Icon In your Program Files Structural Desktop ADT directory you will find two Template files SDT dwt and SDTADT dwt Copy these two files to your Architectural Desktop Template directory SDT dwt is a plain AutoCAD template with linetypes defined for Structural Desktop SDTADT dwt is an Architectural Desktop template based on Aec Arch Imperial Intl dwt with all of the Structural Desktop members that ADT supports defined and given names that will work with Structural Desktop Right click the Shortcut you created for Structural Desktop and select Properties from the drop down menu Select the Shortcut tab You wish to edit the Target text box Your default will look something like this before you begin C Program Files Autodesk Architectural Desktop 3 acad exe t Aec Arch Imperial Intl dwt C Program F
25. Creates a table of Joints Members and Elements with critical information for quick review Members or Elements you have added to the database can be confirmed as to their status through this box A quick convenient summary SDMEM MEMber information You are prompted to select a single member and the information for that member will be displayed SDVOPT Viewing OPTions Displays the Display Options dialog box to toggle different ways of viewing the objects You can choose whether to display or not from the Joint Member and Element classes and to display the numbers associated with these objects Members can display arrows to indicate direction cross sections to show shape and orientation and their section name Grid Lines you create can be toggled on or off The Centroid Face display mode will always be active envelopes are available to display the extents of a member or element with special display of Joist or Double Tee data Finally solid modeling is available to check final parameters for a member or element Editing is not advised in the Solid View Mode of Structural Desktop in fact this mode turns itself off returning to envelopes before many of the Structural Desktop commands begin in order to provide the faster processing of the data NOTE This does NOT refer to the 3D Solid Model available for final output and use in a regular AutoCAD session only to the VIEWABLE model available while actually running Structural Desktop
26. Desktop 140 EURO Tables The following member types have been provided in the Structural Desktop database for engineers who use European tables and codes W types or I shaped members DIL HE IPE IEPA IPEO IPER IPEV IPN Channels U UPN Tubes Square and Rectangular Angles Double Angles both Short and Long Leg Back to Back Pipes Prismatic members either steel or concrete can be defined as per each program and will display All dimensions are assumed to be in Metric and are converted to Centimeters inside Structural Desktop American Metric Tables All member types have been provided in the Structural Desktop database for engineers who use the American tables and codes but wish to use metric values The Nominal nomenclature remains as in the A I S C tables and reflects the Imperial units for example the W14x99 is still called out by that designation However if you wish to use metric measurements the alternate American Metric Table will be invoked and the units for the members therein are designated internally for display on your drawing in a CM per drawing unit scheme Prismatic members either steel or concrete can be defined as per each program and will display All dimensions are assumed to be in Metric and are converted to Centimeters inside Structural Desktop With the American Metric units all Structural Desktop User Provided Tables Joist and Joist Girders Concrete L s and T s and Light Gage sections can
27. ELEMENTS then creates a 3D solid model of the selection set SD3DCENT 3D CENTroids faces Creates a 3d Model for export of Centroids Faces and Joints only Centroids can be useful for the user to compare the original data file against subsequent outputs in Structural Desktop therefore we provide the user this access to the skeletal drawing 2D Drawing Files SDPLOTPLAN PLOT PLAN Prompts the user to select MEMBERS and ELEMENTS to be included then creates a 2 D Plan view of the selected objects with names and gridlines on appropriate layers SDPLOTXZ PLOT Elevation X Z Prompts the user to select MEMBERS and ELEMENTS to be included then creates a 2 D Plan view of the selected objects with names and gridlines on appropriate layers SDPLOTYZ PLOT Elevation Y Z Prompts the user to select MEMBERS and ELEMENTS to be included then creates a 2 D Plan view of the selected objects with names and gridlines on appropriate layers 97 Appendix B Member Information This appendix contains information about each of the members supported in Structural Desktop Prismatic Members Rectangular Rectangular Prismatic members are described in terms of and can be modified by depth and width The centroid of the member passes through the center of the rectangles or squares formed by the Start and End faces as shown to the right in Figure B 1 Prismatic Members Cylinder Round Prismatic members are described in terms of and can
28. Pro you must copy the relevant USER files from the directory on your hard disk also available on the supplied installation disk to the same directory the STAAD file is in so that the STAAD Pro program can find and use them Releases in a STAAD Input File Structural Desktop Version 2 0 introduced a new feature regarding Member Releases Structural Desktop will create a STAAD input file that includes releases if those releases are applied either through the methods that follow below or within your STAAD Pro graphical user interface Structural Desktop loads linetypes from a file in the Structural Desktop program directory when you open a file These linetypes are as shown in Figure 2 11 taken from the Linetype Manger in AutoCAD at right Linetype Appearance Description Bybayer s ByBlock CENTER ___ Continuous Continuous HIDDEN Hidden REL_BOTH Both Ends Released REL_END End Released REL_START Star Released Figure 2 11 The releases that were considered to be the most common were MY MZ releases This version of Structural Desktop will apply those releases to any member that has had the linetype of the centroid of the member changed to one of the last three linetypes above The program will also show releases OF ANY TYPE that apply to a member read from a STAAD file with the same linetype display Selecting the members centroids to be relea
29. You would want to perform this operation to make the output drawings draw the members in final position that is the value to you of Structural Desktop With the View by Plane command members offset in this fashion can be accessed by widening the envelope setting The Hide by Selection command uses the Select object prompt Any member or element you select will go away This is useful to refine a selection made with any of the earlier commands by selectively removing an object or two to get a better view The View All command resets the graphic screen to show all of the members elements that have been hidden by prior view commands As explained earlier the layer options of AutoCAD and the Display Options must also be taken into account 47 Using Selection Most Structural Desktop commands such as the Viewing commands outlined above require you to use a selection set during the command operation The command line will request that you Select object on the AutoCAD command line Text arrows and solids will not select a member or element only the centroid line 3D Face or envelope around a member or element will When objects are selected they become highlighted displayed by dashed lines that shift slightly in color This indicates the current selection set Pressing the Enter key indicates the selection is complete and you are ready to proceed with the command Some of the basic methods for generating and controlling a selection s
30. a Grid Line Add Grid Line 2 x Structural Desktop will prompt you to Select Line Name Parallel to X start point of grid line on the command line Parallel to Y You may enter a point by coordinates or pick a TER pamm point on the screen We suggest that you use the Centroid Faces display if you wish to pick a point graphically with snaps on so that edge lines of an Meares d envelope or solid do not interfere with your selection The dialog box in Figure 8 1 will appear You must click in the dialog box on the Parallel to X or Parallel to Y button to indicate the orientation of the grid line in terms of a plan view To enter a value to be used as a label for the Grid Line you must now click in the text entry box Do so and enter a number letter or brief label You click on the Next button to enter the next Grid Line You should have a grid line that extends generally from one side of the model area to the other and has a label on the left hand side or top side The text will be 1 1 2 times the size of other text on the model set on the Preferences dialog box The program will prompt you to select another start point You may do so and continue to enter labels as long as they are of the same orientation Click the other orientation button to change the direction of the Grid Lines When you through click the Close button 74 If you accidentally click Next and you are through the program is still w
31. a hold file can retain changes that you make to the original imported database information These files can be named any valid name that AutoCAD would recognize for a drawing name but with the HLD extension SDLHOLD Load HOLD file Used to Load a Hold file Displays a dialog box for browsing and selecting from the files on your hard drive or mapped network drive SDLOADAUTOSAVE LOAD AUTOmatically SAVEd Hold file Structural Desktop automatically saves a hold file every five minutes on your hard drive in the Backup directory under the Structural Desktop directory This file is named StructuralDesktopBackup Hld Entering this command or clicking on the menu item Load Autosave Backup Hold File will return you to the state you were in when the last Autosave was completed You should load this file into an existing model not as a blank document This is meant as a last ditch undo for emergency use and is not meant to replace periodic saving of your work at various stages of completion SDMAT MA Terial report Creates a material report for the current database and opens a NOTEPAD session for you to view the results Data can be cut and pasted from this file or the file can be saved as any text filename of your choice and can be imported into virtually any word processor By default the file is created in the current directory under the name MatRep tmp SDCTSTAAD CreaTe STAAD Structural Desktop will create a STAAD input file from the curr
32. a new file created the program is fully initialized and the shortcut menu should appear as shown in Figure 3 1 below The display and viewing options provide functions necessary to construct a Structural Desktop model viewing the object rather than just lines or faces The General Display Options menu item is the top of the command list Repeat ZOOM General Display Options Other Options Cut E Viewing Copy Copy with Base Point Fuse Members Defuse Intersect Break Paste t ginal Coordinates Undo Undo Change Line to Member Redo Change Member Parameters Pan Change Joist Parameters zoom Change Face to Element Quick Select Change Element Parameters Find Change Element to Double Tee Options Change Double Tee Parameters Top of Member Grid Lines 4 Display Text Data Delete Create 2D Drawings Create 3D Drawings Create 3D ADT Model Structure Line Generator File Preferences About Structural Desktop Documentation Figure 3 1 37 Once you have selected this menu item the Display Options dialog box for Geometric Data will appear in the graphics screen area as shown in Figure 3 2 below Each of these groups of options will be explained Design Display Detail Display Object Display Joints Centroid Faces El Members Envelopes Cap PI
33. all two dimensional representational output drawings In the special case of Angles the back edge of the angle will point upward in a horizontal member with a 0 degree beta and angles will properly represent all multiples of 45 degrees It is recommended the user experiment with various structural objects to understand how the Beta Angle is applied Units If you are using American tables all units are imported changed to inches in Structural Desktop All other sets of tables assume metric units and these units will be changed to centimeters as they are read from your input file For example if your coordinates are in Meters all measurements will be multiplied to the correct corresponding measurement in Centimeters within AutoCAD and Structural Desktop The Shortcut Menu The commands and dialog boxes within Structural Desktop are made available by using the Shortcut Menu in AutoCAD or by typing the command on the AutoCAD command line You can access the Shortcut Menu by right clicking the mouse key while the cross hairs are on the graphic screen Then you select the menu item Structural Desktop with the pointer This displays the commands found in Structural Desktop as shown in Figure 1 1 Repeat HELP Structural Desktop Cut Copy Copy with Base Point Paste Paste as Black Paste ta namnal coordinate Onda Bedr Pan zoom Quick Select Find Options Figure 1 1 If you do not see the Structura
34. and with DWG files from AutoCAD AutoCAD LT or Architectural Desktop as a starting point The final products of both programs are 10096 AutoCAD drawings the output drawings of either may be inserted x referenced or combined with other files in any way that any other AutoCAD drawing may be used Book s Intent The intent of the Structural Desktop manual is to give you reference information on the procedures functions and commands of Structural Desktop As you become more familiar with the program more advanced features will begin to be easier to understand Structural Desktop was created by structural engineers to be utilized by structural engineers designers and draftsmen in the development of structural contract documents The Structural Desktop Tutorial will take you through a step by step process of a structural project from analysis to the development of structural contract documents We strongly recommend following the step by step procedure established in the tutorial until you are comfortable with the program In AutoCAD there are many ways to complete a set of drawings for a project and this is also true of Structural Desktop Once you have completed the tutorial you will be ready to experiment with different commands and procedures for creating contract documents utilizing the power of AutoCAD combined with Structural Desktop to fully compliment the workflow of your office standards Object Modeling Features The objects that
35. are limited to selecting up to 100 elements at a time for editing with this parameter box SDCT Change to double Tee The user selects ELEMENT objects in Structural Desktop and transforms them to DOUBLE TEE objects These can then be edited with the DOUBLE TEE tab of the CHANGE ELEMENT PARAMETERS dialog box A 3dFace must first be converted into an ELEMENT by the user before he can change that ELEMENT into a DOUBLE TEE SDCHGDBLT CHanGe DouBLe Tee Displays the Change Double Tee Parameters dialog box to permit the user to edit internal structure of a Double Tee s description and display characteristics 95 Other Editing Commands SDTOM Top Of Member flat This command will manipulate the offsets of a large number of members for you The user selects horizontal members of differing depths and inputs an elevation in inches All members and elements selected will be adjusted so that the top of the member is set to that elevation Horizontal coordinate values for the member endpoints are not changed Note this function will ignore a perfectly vertical column in the event it is accidentally selected SDTOMS Top Of Member Slope This command invokes a function to align the depths of members through offsets similar to the TOS command above However TOSS requires a slope in the X or Y axis and a 3 D point that the plane of the sloped roof passes through Selected members will be adjusted to fit into this slope This works bes
36. be modified by diameter The centroid of the member passes through the center of the circles formed by the Start and End faces as shown to the right in Figure B 2 Wide Flanges M HP and S Sections W M HP and S sections are described by a name in terms of nominal depth and weight per unit foot They are defined by depth width thickness of flange and thickness of web Representations are exact in these dimensions but do not include fillets at corners The centroids of members with these shapes pass exactly through the center of the web as measured in both of the member axis as shown in Figure B 3 98 E Figure B 1 Figure B 2 Figure B 3 Tapered I Shaped Sections Version 2 0 of Structural Desktop introduces Tapered I Shaped Members These members are read from or written to a STAAD Pro file with the relevant Member Properties in the following format MEMBER PROPERTY AMERICAN 1 TAPERED 18 0 375 6 12 0 5 8 0 475 This indicates Start Depth 18 TapSecD 18w 12 Select Table Sections Web Thickness 0 375 Select Custom Sections End Depth 6 420 00 EET Top Flange Width 12 Top dcos oa Steel RE cT ottom Flange Widt b EERE 0 3750 Bottom Flange Thickness 0 475 Top Width 12 0000 jo This member would be displayed as shown 24 0000 Top Flange 0 5000 in Figure B 4 through the relevant mg 04790 portions of the Member Parameters di
37. be used in STAAD Pro or GT STRUDL since the units will be converted by these programs for you When the members are read into Structural Desktop they will be matched and drawn from Metric tables of measure included in the American Metric Database that we provide Any questions or suggestions about the Member Tables provided can be addressed through our in house support email support figure5 com or through your local dealer 141 142 Page SD bee A Need DS a Aes 67 3D Solids for Renderings ew ew rr 81 A AD Sete a MESS UE AUR Ne aah ene ALS 132 AEST SSCULONS sis Baye Sods ieee wah SE 106 American Metric Tables 934 139 T4T ike Cede aUe e E EIE ade 102 Architectural 182 Arrays AutoCAD command ji sic i99 ug 86 B Bar Jorst TableSs ie e4 sie 120 Beta Angle ug re 54 Material Sri Ene qe 7 5 British Tables xoa sed 140 c C MembetEs i ol ue abe e gue sabre NU a E SI L03 Canacdmqan JTabes sewv d 140 Change Double Tee Parameters 72 Change Element Parameters 69 Change Element to Double Tee 71 Change Face to 68 Change
38. dialog box is the focal point for the control of all aspects of a simple member Complex members or joists have additional information that is explained in Chapter 5 Every aspect of a member dealing with the parameters of that member in Structural Desktop is controlled through this dialog box and the boxes that depend from it The material that follows Figure 4 2 will explain each of the data entry methods associated with this dialog box 51 Change Member Parameters Member Num E Member Type PRIYD122D48 gt Change Type Joint J Joint K Beta fo PRIYD12ZD48 Dimension 12 0000 Coordinates 143 39 YD x p x Dens 48 0000 i Y o Material Concrete 2 120 2 fiso J Length fo Offsets oH x 30 30 engt D R X Length 60 0000 Pelease J Support E Supporti Relative Absolute Fused Apply Cancel Figure 4 2 e Desc This box displays a label that may be unique for each member or shared by any number Desc 1 22048 of members When member is read from the data file or assigned a new member type this description defaults to the description of the member In Figure 4 3 the Desc field contains PRIYD12ZD48 which indicates a prismatic rectangular member 12 x 48 in section A wide flange might display W14x99 in this box You can change the contents of this box to be whatev
39. drawn as lines and changed to members The eight joints were created from the endpoints of the members The image at the right shows the same members after the Intersect Break command has been applied and all of the members selected There are now three new joints across the drawing In fact 10 new members have been created numbered 5 through 14 Members 2 3 and 4 have been split where member 1 crosses them then FUSED back into members 2 3 and 4 Likewise member 1 was split into four members which were FUSED to recreate member 1 What this will mean to an analytical input file is that the real members that will be created in the file will be members numbered from 5 to 14 and the physical members 1 through 4 will be screened out by Structural Desktop Any changes beta angle member type etc to these four members will be automatically applied to the analytical members they are now built from If you wish the FUSED members can be defused but this is not necessary for the creation of an analytical file When you create an analytical file the members 5 through 14 will be the ones written to the file but with the current member types and beta angles of the member they comprise applied to the analytical model If the break command had been issued in this model without selecting member number 1 no new members or joints would have been created Only members that are selected can be broken and only members that have been selected can d
40. from an existing drawing You may also enter values for coordinates in each of the X Y and Z boxes All measurements and coordinates for this dialog box are in inches and decimal fractions or centimeters depending upon your AutoCAD default measurements 33 Some non zero value in inches or centimeters must be entered into each of the Total Length edit boxes at the right of the dialog box for the function to create a line model You may select the Number of X Bays Number of Y Bays and Number of Stories by entering these values into the boxes to the left of the Length values Each bay created will be the total length divided by the number of bays in the direction of that axis No secondaries will be created in the floors or roof m Start Point r Building Specifications structures unless you select a Total Length Number per Bay at the x Number of X Bays 2845 bottom of the dialog box AND chose a direction for vf NumberofY Bays alignment of the secondary 2 Number of Stories 387 75 members An example of a dialog box properly filled out Floor Roof Secondaries cm is shown in Figure 2 17 at C None AlignedwithX Aligned with Y _ the right and the results of P this dialog box are shown in Figure 2 18 below Figure 2 17 f Drawing dwg M o cyuulz Figure 2 18 34 In this exa
41. functions required to create a valid model in Structural Desktop from an analytical file or from scratch have been simplified and minimized with users of existing Structural Analysis Programs in mind Once the model has been created modified and completed the user may extract 2D drawings or 3D models for use with any AutoCAD based program More advanced users of Architectural Desktop will wish to have structural members in a format compatible with the Architectural Desktop 3 3 standard With these they can complete their ADT Building model rather than extracting 2D drawings to block or insert into a set of contract documents On the Structural Desktop menu version 1 7 contains a new entry Create 3D ADT Model When you click on this entry every Structural Desktop Member will be accessed by the program and processed into a script file named SDT to ADT SCR This script will draw these members inside of Architectural Desktop 3 3 It is important that you complete all offsets and fusing prior to using this function as the location and number of members will be determined at the time you create the script file Once you have opened an Architectural Desktop session and run the script file the resulting members are 10096 Architectural Desktop members The structural members are dependant on the definitions in the initial drawing file You may set up an Icon to start an Architectural Desktop session that uses the provided template You also have the
42. input file with members not recognized by the other analytical program Structural Desktop works with either Metric or Imperial units but is not able to jump between the two systems The user should work consistently within the Measurement system that the final drawings will be created in Output drawings can be scaled to Meters or mm after they are produced from Structural Desktop using the scale function of AutoCAD gt Two tables of American Members with identical contents are provided One table is wholly Metric and the other is wholly Imperial gt Canadian British and Euro sections are included in tables that are wholly Metric Only Metric input and output files can be associated with the members in these tables When Structural Desktop reads an analytical file in STAAD Pro it will assume that measurements in inches will relate to American Tables in inches Using the statement Member Property instead of Member Property British for example will also default to the American Tables Use of Metric values will prompt the program to look for specific clues in your analytical file that will determine the tables to be loaded If you open an analytical file of any particular type in order to properly load a file of another Country Code you must close AutoCAD and run the program again Each file is limited to a single Properties definition and only one Country Database can be associated with a file To load the DBX files created
43. member selected Trl eean ines This is a drop down box If you click on the ce arrow at the right side of the box you will see Joist other types as shown in Figure 4 6 You may click on one Figure 4 6 of these member types to change the current member If you click on a member type defined by parameters e g a prismatic you will be able to access the grid at the right of the Member Type box to edit the depth and width If you select a type that derives from a table e g Wide Flanges from the Steel table the dialog box for a particular section of that type will appear The same thing occurs when you click on the Change Type box detailed next Change Type Moves directly to the dialog box for selecting a new member type from standard tables Pressing this button displays the tables of the objects that are available from all of the standard and Structural Desktop tables How to apply this is covered in detail in the Component Tables section below Beta Angle Defines the member s rotation around the Centroid Axis There are several ways to move and modify where a member is through its end points but the rotation of a member must be adjusted through this box Rotating the envelope or solid in the model will not update this item or persist in the model MemberType 242012 Density Describes the material used in the structural design Structural Desktop has set Beta 0 Mu v
44. of Structural Desktop under AutoCAD 2000 with users of Structural Desktop under AutoCAD 2006 without loss of data STAAD Pro Interface Improvements HSST Members are now supported The Hollow Steel Structural Tube objects from STAAD Pro are now supported in Version 3 0 of Structural Desktop These members can be written to a STD file read from a STD file changed in Structural Desktop to another type or size and will produce 3d models 2d drawings and Material Report output separate from and separate from the TS members from the earlier STAAD Pro database e g TUB80808 RISA 3D Improvements RISA 3D Version 5 5 is now supported Structural Desktop Version 3 0 was recompiled to provide support for the new file format for RISA 3D version 5 5 SDT still reads prior file formats for the RISA 3D file data CSI SAP2000 Improvements SAP2000 Version 9 is now supported Structural Desktop Version 3 0 was recompiled to provide support for changes in the S2K file format for version 9 SDT still reads prior file formats for versions 7 and 8 131 Version 4 0 Compiled February 2008 General Improvements New Options Structural Desktop Version 4 0 incorporated the new Adjust Members Elements Move All functionality to permit models to move rotate or stretch groups of Joints without changing their offsets relative to their members or return to the offset based methods at will in order to adjust positions of members for drawing purposes
45. option of running a regular Architectural Desktop session and choosing to start a new drawing using this template or you may wish to open a new drawing once with the template and save this as a drawing file Then every time you wish to have Structural Desktop members you may open this empty drawing file that has all the structural members defined and import the script file processed by Structural Desktop Then use the Save as function in Architectural Desktop to save this drawing under its final name To run the Script file start Architectural Desktop Make certain that you have loaded the template file or open a drawing file that contains the Member Styles under the naming convention provided with your Structural Desktop program This can be confirmed by clicking the menu item Design Structural Members and Member Styles There should be defined styles for wide flanges joists angles channels and others Type script on the Architectural Desktop command line When the dialog box comes up select the script SDT to ADT SCR Extremely large files on older machines such 137 as Pentium II processors may take a half hour to draw all of the members specified with beta angles and proper centroid locations for the members Once the program scripting has completed you may purge the Member Styles Only those members not in the current model will be purged automatically This is covered in the Architectural Desktop documentation You
46. permits you to actually move Joints This power is sufficient to totally destroy a model if you are uncautious On the other hand the power to rotate an entire model 10 30 45 or 90 degrees for drawing or analytical purposes or to actually adjust nodes that 43 are in the wrong place by using the AutoCAD stretch command to slide a bay a foot one way or the other makes this command worth mastering Please note in order to Move Joints the circle objects that represent the Joints must be visible and on an unlocked layer Selecting a joint alone will NOT move the member associated with it you must select every entity that is to be moved Items on hidden or locked layers will not move However you can select the entire structure all objects and move them to a new base elevation in your model You can rotate the building around any point and the analytical file produced will reflect the rotated joint coordinates You can rotate the building in order to produce true length elevations when the building contains walls at angles to the orthogonal We strongly suggest that you practise with the Move All setting and make a clear habit of turning it off as soon as you have accomplished the movements you wish to make For this reason opening a hold file or analtyical file will always begin a session with the selection set to Adjust Members Elements Viewing Commands The Viewing commands permit you to selectively view or remove from view any
47. the building were selected it was intended that they be sloped to match the slope of the building roof This is accomplished with Structural Desktop members through the alteration of the Beta Angle of the members Checking the checkbox Match Slope Beta Angle in the dialog box will set the Beta Angle regardless of the current value to match the slope of the roof as shown in Figure 4 14 The other half of the roof had members with a Beta Angle of zero Checking No Change in the Beta Angle section of the dialog box will simply move the members vertically until some corner touches the slope of the roof thus establishing a stair step effect in the right half of the illustration The No Change box will not set the Beta Angles to zero but will leave the angle as it is in the database Delete Member Element If you use the erase command in AutoCAD to remove a member or element in Structural Desktop you have removed the member from the screen but not from the database Any function that creates a Special Regeneration will show the member to still be a part of your structure and it will come back Since a member created for an analysis is likely to be important to you eliminating that member should require a special function at the very least This function is available through the menu command Delete Member Element This command enables you to select members or elements When you are though with the selection and permit the program to continue t
48. the command line Create Elevation Y Z will draw all or any part of your model with a Z value of zero and in a flat representation of each of the members When you have indicated to AutoCAD that you are through with the selection process the program will create a new drawing window in AutoCAD The program draws each member you have selected on the layer that you have placed it on and will create a text entity for that member on the same layer These simple text entities can be moved re sized or modified through standard AutoCAD text management tools The difference in this drawing from the same drawing that would be created from the other two 2D drawing modes is that the objects selected are drawn so that the X axis in the drawing is the same as the Y axis in the model and the Y axis in the drawing is the Z axis in the model 80 Again Grid Lines parallel to the X axis in the model will show up at the Y coordinate value for that Grid Line but projected to the X axis and will be vertical dimensioned using the current default dimension style in your template for new AutoCAD drawings and labeled Grid Lines parallel to the Y axis will be ignored in an Y Z elevation You may review this drawing and save it using the AutoCAD menu SAVE AS You may keep this window open to refer to as you create other drawings but we recommend that you close the window as soon as it is convenient in order to conserve resources and optimize the speed of you
49. to 344 5 240 120 with the same length elevation and orientation on the screen You still have the same coordinate values and the orientation and relative positions and distances will be unchanged Software that uses vertical Z as AutoCAD does is converted unchanged Working With Files 2 AutoCAD Coordinates d y Many Analytical Coordinates 2 Figure 1 2 Structural Desktop saves all of its database information in a file format that we have given the extension HLD and refer to as a HOLD file as in Here HOLD this for me Working with the input files analytical HOLD files Structural Desktop and output files AutoCAD DWG files is extremely important You are integrating three software packages managing the files is the key to success You have three phases in the process as shown in Figure 1 3 below ANALYSIS MODEL ANALYSIS gt PASS OR FAIL INPUT FILE EDIT amp SAVE ANALYSIS DESIGN COMPLETED gt MODELING Structural Desktop MODIFICATIONS lt eprre save HOLD FILE MODEL COMPLETED OUTPUT DRAWINGS CONTRACT EDITED IN DOCUMENTS Plain AutoCAD Figure 1 3 The most important detail to remember in working with the files is that Structural Desktop WILL NOT save DATA in a drawing file The Structural Desktop Model must be saved in a HOLD file and that file can be opened and edited in Structural Desktop as many times as you have need The final resulta
50. to move one or more corners of the element which will change the shape of the element In this instance you must make whatever changes you wish to have occur for each corner in all three dimensions Reverse Order This button is a safety valve in the event that you have created an element only to find that the order of the joints cause that element to extrude the thickness in the direction opposite to that intended Clicking the Reverse Order button will change the sequence of joints to cause an element to extrude in the opposite direction The joint locations and their offsets will not change only the order in which they reside in the element The first joint number will not change CHAPTER 7 Complex Elements The objective of this chapter is to provide information on using Structural Desktop elements that we refer to as Complex Elements Complex Elements represent precast concrete double tees and may be analyzed in your analysis program through the use of regular elements Currently Complex Elements are only available within the Imperial units system and with American Tables active When these elements are brought into or created in Structural Desktop they will be a thickness that satisfies you in regards to simulating whatever properties you wish to model You can use the Change Element Parameters function to change the thickness of an element but to display that element as a double tee with legs and internal parametrically determi
51. using a pickbox and picking them one at a time You should also remember that you can create lines or 3d faces inside a model at any time and change them into members and elements If you wish you may create a line and change it to a member one at a time until your entire model has been created and add elements in the same way When each new element is created in Structural Desktop it is assigned a thickness of one inch as a default value To change the thickness specify the material of an element or parametrically modify offsets for the corners of an element use the Change Element Parameters command 68 Change Element Parameters The Change Element Parameters menu item is found on the Structural Desktop Shortcut Menu You are prompted to Select objects elements which displays the dialog box as shown in Figure 6 2 as soon as you have made your selection Change Element Parameters Element Num 1077 Thickness 1 25 Density 490 00 Material Steel Joint J 27 JointK 1022 JointL 1023 Joint M 1118 Reverse Order X Af Z x Y Z 1152 Elements Selected Apply Cancel 54 7103 x 159 8158 x 53 4856 x 57 2645 Static 40372 Y 31 8924 35 5471 af 446705 Move Entire Element C Z 2 2 Relative Apply Offsets 9 999999998 x 0 00010000 x 0 00010000 X Relative o 0 00010000 o Absolute 2 o 2 o 0 00010000 Y o 2 Figure 6 2
52. will load the title of the file for future reference it will be incorporated into your Material Report for example and will proceed to read the Joint Numbers and Coordinates Member Incidences and Element Incidences The program will read the Member Properties Element Thicknesses and constants such as Beta and Density With the introduction of Version 4 Structural Desktop will continue to read and record your RISA 3D file with a much greater degree of completeness than in previous versions It will read and retain Diaphragms and Solids as additional types of fundamental objects Structural Desktop will then read your Load Statements the Joint Member and Element loads that follow them and your Load Combinations and additional Materials When you choose to create a RISA 3D file from within Structural Desktop the program will completely re create and write all of the Load Load Combination and other lines as it read them from the original RISA 3D file We refer to this attempt to capture all possible analytical data and return it to you as the ROUNDTURN Please note Structural Desktop works within AutoCAD with an attempt to carry enough accuracy and precision to be sufficient for all Structural needs All units within your RISA 3D file will be converted into Inches for Length and Kips for force and the appropriate combinations thereof for torque and other combined forces Once you have read the file into Structural Desktop your Joints wi
53. within three different generations of AutoCAD There are three separate installation programs on each disk sold One installation will install a version of Structural Desktop compatible with AutoCAD 2000 20001 and 2002 Another is compatible with AutoCAD 2004 2005 and 2006 The final compilation of the program is compatible with AutoCAD 2007 and later versions using the same compilation criteria Structural Desktop contains structural members from the American Institute of Steel Construction AISC Steel Joist Institute SJD Light Gage Structural Institute LGSD American Iron and Steel Institute AISI and the Prestressed Concrete Institute PCD Prismatic sections and plate elements are also supported Key aspects of Structural Desktop are the ability to automate the drawing of structural objects and to create and read Analytical Design files These allow the Structural Engineer to utilize all the information created in the Analytical Design phase with speed and accuracy and eliminates the manual transfer of design information to a drawing Structural Desktop LT serves the drafting needs of the designers draftspersons Architects and Engineers Structural Desktop LT does not read or write analytical files but contains all of the other features and functionality of Structural Desktop to run within AutoCAD Structural Desktop LT is fully compatible with Structural Desktop files and vice versa Both will work with DXF files from other software
54. your computer will have to have to handle it at a comfortable speed 39 The Centroid Face option is there to remind you that the Centroid line is the heart of a member and a 3d Face is the basis of an element s representation Turning this option on and off will not actually affect the display The Envelopes option turns on and off a representation of the Outline of a member or element Envelopes were created to increase the speed of the computer processing while working in Structural Desktop We recommend using envelopes as your first choice The envelopes technically are lines and polylines that are GROUPED with the actual representation of the Centroid or Face objects What this means to the user is that a selection of any line in an envelope selects the entire object This also requires that the setting for Object Grouping be checked This setting in AutoCAD can be found by selecting Options from the AutoCAD menu clicking on the Selection tab and looking at the left side of the Options tabbed dialog box This option can also be accessed through the AutoCAD System Variable PICKSTYLE which should be set to 1 The reliance on grouping can result in selections that are not quite what you expect if you are using an AutoCAD WINDOW to perform a selection A WINDOW selection selects only objects that lie entirely within the selection window In Structural Desktop when a window encloses any part of a group representing a member it wil
55. 0 16 268 27 2514 7 0 2375 2125 092 14 334 27 2513 7 0 2 375 2 125 0 95 13 409 27 2512 7 0 2 375 2125 097 12 471 28 2516 80 2 375 2125 0 90 16 289 28 2514 80 2375 2 125 0 92 14 360 28 2513 8 0 2375 2 125 0 95 13 441 28 2512 8 0 2375 2125 097 12 5 07 28 316 8 0 2 875 2 625 0 90 16 3 10 28 314 80 2 875 2625 0 92 14 3 86 28 313 80 2875 2 625 0 95 13 472 28 312 80 2875 2625 097 12 543 28 3516 8 0 3375 3 125 090 16 3 331 28 3514 8 0 3375 3 125 0 92 14 412 28 3513 8 0 3375 3 125 0 95 13 504 28 3512 8 0 3 375 3125 0 97 12 5 80 29 2516 9 0 2 375 2125 090 16 310 29 2514 9 0 2375 2 125 0 92 14 386 Z9X2513 9 0 2375 2125 0 95 13 472 Z9X2512 9 0 2375 2 125 097 12 543 210 2516 10 0 2 375 2 125 0 90 16 331 210 2514 10 0 2 375 2125 0 92 14 412 210 2513 10 0 2 375 2 125 0 95 13 504 210 2512 10 0 2 375 2 125 0 97 12 580 210 316 10 0 2 875 2 625 0 90 16 3 51 210 314 10 0 2 875 2 625 0 92 14 438 210 313 10 0 2 875 2625 0 95 13 536 210 312 10 0 2875 2 625 097 12 6 16 210 3516 10 0 3375 3 125 0 90 16 372 Z10X3514 10 0 3375 3 125 0 92 14 464 210 3513 10 0 3 375 3 125 0 95 13 567 210 3512 10 0 3 375 3125 0 97 12 653 212 2514 0 92 14 4 64 105 AISI SECTIONS CS CU ZS ZU and HU In addition to the LGSI sections Structural Desktop interfac
56. 00 0 500 0 090 13 3716 54 412 4 0 4000 0500 0 105 Icsaxa10 4 0 4 000 0 500 0 135 10 5 475 5551620 5 5 1 625 0 500 0 035 20 1 123 5551618 5 5 1 625 0 500 0 045 18 1 436 lcs551616 5 5 1 625 0 500 0 057 16 5551614 5 5 1 625 0 500 0 071 14 2 215 5551612 5 5 1 625 0 500 0 102 58 1618 8 0 1 625 0 500 0 045 18 1 817 58 1616 1 625 0 500 0 057 16 2 287 Width H1 4 e Figure 16 AISI CS Members Designation Depth Width H1 Thickness Gage WT FT 58 1614 8 0 1 625 0 500 0 071 14 2 821 1 625 0 500 0 102 12 16 9 0 3 000 0 500 0 060 16 3 12 csex314 9 0 3 000 0 500 0 075 14 3 879 csox313 9 0 0 0 500 0 090 13 4 635 cs9x312 90 000 0 500 0 105 12 5 38 9 0 3 000 0 500 0 135 10 6 853 cs101616 10 0 1 625 0 500 0 057 16 2 675 3101614 10 0 1 625 0 500 0071 14 3 304 5101612 10 0 1 625 0 500 0 102 12 4 658 10 316 10 0 3 000 0 500 0 060 16 3 325 3 000 0 075 510 313 10 0 3 000 0 500 0 090 510 312 10 0 3 000 0 500 ICS10X310 10 0 3 000 0 500 5113716 11 0 3 750 0 500 5113714 11 0 3 750 0 500 0 060 0 075 77 15113713 11 0 3 750 0 500 0 090 5 70 1 5113712 11 0 3 750 10 500 0105
57. 154 28 17 28 8 28 9 28 28 21 28 22 28 28 24 28 25 28 20 0 215 2817 28 23 5 2 18 28 255 LH2819 28 265 TENTE 2821 28 320 2822 28 390 2824 28 450 2825 28 535 LH321 32 105 LH322 32 105 323 32 115 LH324 32 11 5 tas LH327 LH328 Loon reno LH363 LH364 3 LH369 36 15 0 LH3610 36 150 LH3611 36 165 LH3612 36 185 LH3613 36 19 0 LH3614 36 205 LH3615 36 21 0 LH3616 36 22 0 LH3617 36 23 5 LH3618 36 265 LH3619 36 285 LH3620 36 31 0 LH3621 36 34 0 LH3622 36 37 5 LH401 40 11 0 LH402 115 LH403 115 12 0 LH405 40 12 13 0 40 145 145 iLH409 15 0 LH4010 40 16 0 LH4011 40 175 Lupa 40 185 195 LH4015 40 215 LH4017 40 25 5 LH4018 40 275 29 5 LH4020 40 31 5 ILH4021 40 35 5 LH4022 40 40 5 LH4023 40 42 5 LH4024 40 45 5 LH4025 40 54 5 44 11 0 Hem faa 115 17 0 18 5 LH4423 m 117 LH481 48 120 Tm PE 20 5 LH5214 52 215 LH5215 52 2255 LH5216 52 235 LH5217 52 26 0 LH5218 52 285
58. 175 075 0 090 13 2300 238 212 234 220 40 2 00 0 75 0 036 20 1126 738 218 234 218 40 2 00 1075 0 048 18 1 494 234 216 4o 2 00 075 0 060 16 1861 234 214 40 2 00 1075 0 075 14 2310 234 213 40 2 00 075 0 090 13 2 760 755 220 so 2 00 1075 0 036 20 1249 755 218 so 2 00 075 0048 18 1657 755 216 5 0 2 00 1075 0 060 16 2 065 235 214 50 200 0 75 0 075 14 2566 255 213 5 0 2 00 0 75 0 090 13 3 066 236 218 200 075 0048 18 236 216 2 00 075 0 060 16 2270 moms oo fors oors 236 213 60 2 00 o 236 212 2 00 o 237 218 2 00 o 237 216 70 2 00 o 237 214 70 2 00 o 237 213 2 00 o 257 212 2 00 0 m P gt e gt o a N e E N 8 891 Table B 5 above and Figure B 18 demonstrate the names sizes and values used by Structural Desktop for the AISI ZS members as they are provided in the User files The top and bottom flanges Width and the lip lengths H1 are identical for these members Width 109 The AISI ZU members that are provided in the User files are listed in Table B 6 below and refer to the values in Figure B 19 Designation Depth wiatn Thickness Gage wrrET 1 500 1 25 0036 20 0 459
59. 25 52 240 UG526 52 26 5 UG527 52 295 UGs28 52 320 UG529 52 35 0 UGs210 52 375 410 UG5212 52 435 UG5213 52 465 UG5214 52 530 UG5215 52 58 5 UG5216 52 67 0 UG5217 52 75 5 UG5218 52 83 5 UG5219 52 985 5220 52 123 5 UG56t 56 200 UG562 56 210 UG563 56 220 ase 56 23 0 0565 56 25 0 UG566 56 27 0 30 5 uases 56 325 ase 56 36 5 UG5610 56 38 5 UG561i 56 420 UG5612 56 445 UG5613 56 475 UG5614 56 545 UG5615 56 60 0 UG5616 56 675 UG5617 56 76 5 UG5618 56 85 0 095619 56 100 5 JG5620 56 125 0 60 230 UGe02 60 23 5 UGe03 60 23 5 Jasoa 60 23 5 Jasos 60 245 Jasos 60 270 30 5 Jasos 33 0 UG609 60 36 5 UG6010 38 0 420 UG6012 60 445 UG6013 60 47 0 530 UG6015 60 60 0 UGe016 60 675 UG6017 60 75 5 UG6018 84 0 100 5 JG6020 124 0 64 235 64 240 UG643 64 245 UG644 64 245 UG645 64 25 5 UG646 64 28 5 UG647 64 310 UGe48 64 335 UG649 64 375 UG6410 64 39 5 UG6411 64 425 UG6412 64 46 0 UG6413 64 48 0 UG6414 64 540 UG6415 64 60 5 UG6416 64 68 5 UG6417 64 775 UG6418 64 86 0 UG6419 64 102 0
60. 4 TO 77 UPT 1 T24IT20 78 TO 90 TABLE T W6X9 91 TO 100 UPT 2 C8X2514 101 TO 110 UPT 2 CS9X314 111 TO 120 UPT 2 CU8X1214 121 TO 130 UPT 2 Z10X3512 131 TO 140 UPT 2 HU10X514 141 TO 146 UPT 3 LH2412 CONSTANTS E CONC MEMB 1 TO 77 E STEEL MEMB 78 TO 146 DEN CONC MEMB 1 TO 77 DEN STEEL MEMB 78 TO 146 ALPHA 6 9E 7 ALL SUPPORT 123 Appendix D The GT STRUDL User File The GT STRUDL user file is installed on your hard disk at the time that you install Structural Desktop It can also be found on the CD ROM that you used to install Structural Desktop All of the members that are made available to you in these files require further design once the loads and forces associated with those members have been determined Using the members in the user file you can generate the selfweight loads transfer loads and provide a more complete model which includes the stiffness of the frames The members you include from your user files will also be drawn in your drawings bringing your drawings that much closer to completion To use this file in GT STRUDL you must include the name of the user file StructDT ds in the appropriate dialog text box when you open the program GT STRUDL and during subsequent runs of the analysis file Please refer to the GT STRUDL references documentation and help files for further information on the use of this table and to Appendix B for information about the members available under each type The file contains the follow
61. 44x285 44020 11810 1 020 1270 285 00 W44x290 WW44x335 44020 020 770 335 00 M Shapes S Shapes HP Shapes Return to Tables Figure 4 10 Each table displays the respective country in the top window margin of the dialog box The window to the left is a drop down tree that permits selection of types and groups within each type of member The window to the right will display all members that are within that grouping with information labels across the top appropriate to that member The 1 5 tables are shown with the Wide Flange table displayed and the grouping of members with a nominal depth of 44 inches is shown in the window to the right 56 A LS C Wide Flanges Channels Miscellaneous Channels M S HP sections or T sections as in WT MT and ST s Tubes Tubes include all of the HSS sections Angles Angles have buttons on the side for regular L angles Reverse angles and both varieties of Double Angle Long Legs or Short Legs Back to Back ColdFormed The ColdFormed button will invoke two groups of buttons down the side one for the AISI sections CS CU ZS ZU and HU and one for the LGSI sections Z C The User Tables included in your installation of Structural Desktop can be used within STAAD GT STRUDL or RISA 3D to designate members with these names and have properties drawn from these members You may also attach properties from these member designations after the fact within Struc
62. 5 LHe411 64 215 LH6412 64 225 LH6413 64 220 LH6414 64 23 0 ILHe415 64 245 LH6416 64 26 0 LH6417 64 27 0 LH6418 64 295 LHo419 64 320 LH6420 64 345 ILH6421 64 375 LH6422 64 425 LH6423 64 455 LH6424 64 47 0 LH6425 64 595 Hes 68 185 2 185 18 5 LHes4 68 185 5 68 185 68 19 0 LHes7 68 195 68 205 LHes9 68 21 0 68 220 68 225 12 68 23 0 13 68 235 68 25 5 15 68 26 0 16 68 28 0 17 30 0 68 30 5 68 33 5 LH6820 68 37 0 40 0 LH6822 68 43 5 23 68 45 5 2 68 50 5 LH6825 68 58 5 Table B 10 4 LH721 72 200 LH722 72 20 0 LH723 72 20 0 LH724 72 20 0 LH725 72 20 0 LH726 72 2055 72 215 LH728 72 220 LH729 72 23 0 LH7210 72 23 0 LH7211 72 23 0 7212 72 23 5 LH7213 72 245 LH7214 72 25 5 LH7215 72 265 LH7216 72 285 LH7221 72 405 LH7222 72 45 5 7223 72 465 7224 72 515 LH7225 72 595 LHz81 78 20 0 LH782_ 78 20 0 7 78 205 5 78 21 0 LHz86 78 21 0 78 21 0 7 78
63. 6 icusx1220 3 0 1250 0 035 20 0 626 icuax1218 3 0 1250 0 045 18 0 800 icusx1216 3 0 1250 0 057 16 1 007 icuax1214 3 0 1250 0 071 14 1 249 icu351220 3 5 1250 0 035 20 0 684 icu351218 3 5 1250 0 045 18 0 878 icu351216 35 1250 0 057 16 1 106 0351214 3 5 1250 0 071 14 1 368 icu4x1220 4 0 1250 0 035 20 0745 icu4x1218 4 0 1250 0 045 18 0 953 icu4X1216 4 0 1250 0 057 16 1 201 icUaX1214 4 0 1 250 0 071 14 1 490 icu551220 55 1250 0 035 20 0 922 U551218 5 5 1 250 U551216 55 1 250 0 U551214 5 5 1 250 0 071 14 usxi220 8 0 1 250 8 0 1 250 8 0 1 250 0 JO O O U8X1218 U8X1216 U8X1214 U101218 10 0 1 250 0 045 18 1 872 icu101216 10 0 1250 0 057 16 2 365 lcu101214 10 0 1 250 0 071 14 2 940 121214 12 0 1 250 0 071 14 3 423 o Table B 4 108 Width Depth Figure B 17 AISI ZS Members 25 Members Designation Depth Width H1 Thickness Gage WT FT Designation Depth Width H1 Thickness Gage WT FT zs3x1720 3 0 175 ozs 0 036 20 ZS8X218 zssxiz18 so 175 075 0 048 18 1249 238 216 zssxiz16 30 1 75 075 0 060 16 1555 238 214 233 1714 30 175 075 0 075 14 1 929 zsex213 zssxiz13 so
64. AD file and is not available when GT STRUDL files or HOLD files are loaded The function assists the user in distinguishing specific project files and permits quick editing Changes made to the STAAD file will only apply if the STAAD file is saved and loaded into Structural Desktop in a new session SDLDBX Load DBX Loads the GT STRUDL input file set from a directory The command expects the directory to contain the files listed below which are the default names for the files created by GT STRUDL for interface to programs such as Structural Desktop STDBX02 STDBX03 STDBX20 STDBX22 STDBX23 if ELEMENTS are present SDLOADRISA LOAD RISA 3D file Provides a standard file dialog box to load a RISA input file r3d either from a local drive or mapped network drive 89 SDLOADCSI LOAD CSI SAP 2000 file Provides a standard file dialog box to load a SAP 2000 input file 52 either from a local drive or mapped network drive SDSAVE SAVE Saves a Structural Desktop HOLD file Structural Desktop does not save the database data with any drawing file Opening a drawing file in Structural Desktop manually is not recommended Structural Desktop saves the coordinates joint member and element incidences offsets parameters newly added members or elements and the AutoCAD Layer information for these objects in a HOLD file Hold files are complete and can be shared with other Structural Desktop or Structural Desktop L T users Only
65. AME D1 WT FT D1 WT FT NAME D1 WT FT UG2012 20 445 UG2013 20 475 510 UG2015 20 58 0 UG2016 20 735 UG2017 20 785 UG2018 20 840 462019 20 995 462020 20 136 0 462411 24 430 462412 24 460 MG2413 24 490 462414 _24 575 462415 _24 635 UG2416 24 755 UG2417 24 795 UG2418 24 935 UG2419 24 101 0 JG2420 24 138 5 114 UG281 28 175 200 c e c o C c c c lt lt G G G G O NIN IN IN IN o JN o c G2811 462813 28 49 0 002814 28 57 0 G2815 63 0 462816 28 735 002817 28 795 2819 c c N c lt o m c c o 0 o c e N c e lt G c A c e o c c c G 0 o o NIN N o IN c 5 O O x e c c c lt c G G c5 169 IN e e a 5 o N c e mb o 72 0 UG3217 32 77 0 855 36 18 0 46362 36 20 0 36 215 36 230 46365 36 245 uGses 36 26 5 36 295 ucaes 36 32 0 UG3e9 36 35 5 UG3610 36 38 5 410 263612 36
66. Base Point Fuse Members Paste Defuse Paste as Block Intersect Breat iginal Coordinates Unido Undo change Line to Member Redo Change Member Parameters Pan Change Joist Parameters Zoom 7 aange Face to Bement Quick Select Change Element Parameters Find change Element to Double Tee Options Change Double Tee Parameters Top of Member Grid Lines 4 Display Text Data Delete Member Element Create 2D Drawings Create 3D Drawings Greate 3D ADT Model Structure Line Generator Load Structural Desktop Hold File Preferences Save Structural Desktop Hold File NE Open Structural Desktop Document TET STAAD Interface GT STRUDL Interface gt RISA Interface 4 CSI Interface 4 Load Autosave Backup Hold File Figure 2 2 Recover Hold File Bata 12 The menu options that are active at the start of a session are shown on the file menu in Figure 2 2 above and Figure 2 3 below The top menu item Load Structural Desktop Hold File is covered in the final section of Chapter 2 that details the process of saving and returning to your Structural Desktop work session at a later time The next item shown as active Open Structural Desktop Document is used to initialize a session when you wish to build a model within SDT from a blank drawing or from some starting point such as a floorplan This command is covered in the section on creating a Structural Desktop Model without an analytical file
67. Create lines using the Line Command within AutoCAD The first point you select with the line is the Start J of the member and the second point is the End K You can create as many lines as you wish copy these lines array them offset them or use any function that ends up with a Line on the screen in Layer 0 You may also insert drawings that contain lines and change those lines to the 0 layer Please note Polylines Arcs Circles and other discrete AutoCAD entities are not lines for the purpose of this command 3 In the Structural Desktop Shortcut Menu select the Change Line to Member menu item Select object will appear on the command line Select the lines or line drawn When you are finished with your selection lines on layer 0 will change to lines on the layer SD CENTROID Where joints do not exist in your model at the ends of the members new numbered joints will be created The new member will use an existing joint if it is within one inch of the end of the member The members will be created and numbered in the order you select them in not the order they were drawn in 50 4 In the Structural Desktop Shortcut Menu select Change Member Parameters The newly created members have no properties so you should assign a member type and a material type or density This is covered in the next part of this chapter The ability to add a member lets you create additions to your model When used with an empty document you can create an
68. D again When SAP 2000 exports an S2K file all compound statements are expanded into a basic form that Structural Desktop is designed to read When you select the Load SAP 2000 File option the program will assume that you have a file with the S2K extension on a local or network drive that you can access through an Open File dialog box When you click on the menu item Load SAP 2000 File the dialog box in Figure 2 14 below will appear Choose a SAP 2000 File Lookin ACAD2000 ek R14 Custom Files 2 1 ChannelFromSDT S2K 2 AlITypesOut S2K 2 E SAMPLE 2 1 Cylinder S2K 3 AnubisBackOut s2k 2 E SUPPORT 1DubAngFromSDT S2k 2 aRing S2K 3 FE TEMPLATE 1Prism S2K 2 around S2K Fe TEXTURES 1TeeFromSDT S2k 3 BIGTESTOUT s2k TUTORIAL 2 TWFromSDT S2K 2 BUILDINGTest s2k 8 Pi 2 Angles S2K 3 aBeta S2K 3 BUILDTestChan s2k 5 s 1AngleFromSDT S2K 9 AllSections s2k 3 ex13 s2k Files of type SAP 2000 Files S2K Cancel Figure 2 14 This is a standard file selection dialog box It is primed to show files that have the S2K extension and will allow you to type the name of your file or click on the file You may also use the buttons at the top of the dialog box to search for your file in other folders Both SAP 2000 Version 8 and SAP 2000 Version 7 files can be loaded 30 When you select the file and click Open the following steps will occu
69. DL Input File Structural Desktop can create a GT STRUDL input file from the model at any time For this to be effective you must have a Structural Desktop Model open in AutoCAD that was created by reading an analytical file by Opening a Structural Desktop Document and changing Lines or Faces to Members or Elements or by reading a HOLD file This will not be effective if you have simply read a Drawing file DWG and not performed transformation options AutoCAD drawing files do not contain joint coordinates member incidences element incidences member properties element thicknesses and constant values The Structural Desktop model contains this information when the proper sequence has been performed If this is confusing please read the Tutorial which will lead you through a session that should demonstrate this process in more detail If members are FUSED in your Structural Desktop Model the fused members will be ignored but the sub members that they are composed of will be written to the GT STRUDL input file with the current Member Properties Constants and Beta Angles Structural Desktop also writes Offsets to a GT STRUDL file in order to preserve this information and to adjust members to real world relative positions for creation of CIS 2 files compatible with other software GT STRUDL labels the information contained in Structural Desktop offsets as ECCENTRICITIES 22 When you have created a model either by reading a file or by Ope
70. Holes in Surfaces and Solids as additional types of fundamental objects Structural Desktop will then read your Load Statements the Joint Member and Element loads that follow them and your Load Combinations custom materials and even the Print and Perform Analysis statements When you choose to create a STAAD Pro file from within Structural Desktop the program will completely re create and write all of the Load Load Combination and other lines as it read them from the original STAAD Pro file We refer to this attempt to capture all possible analytical data and return it to you as the ROUNDTURN Please note Structural Desktop works within AutoCAD with an attempt to carry enough accuracy and precision to be sufficient for all Structural needs All units within your STAAD Pro file will be converted into Inches for Length and Kips for force and the appropriate combinations thereof for torque and other combined forces Once you have read the file into Structural Desktop your Joints will display as small circles the Members will display as Lines and the Elements will display as 3d Faces on layers created for you by the program Surfaces and Solids will also be displayed Creating a STAAD Input File Structural Desktop can create a STAAD Pro input file from the model at any time For this to be effective you must have a Structural Desktop Model open in AutoCAD that was created by reading an analytical file by Opening a Structural Desktop Docu
71. JG6420 64 126 0 JG681 68 245 UG682 68 245 UG683 68 25 0 UG684 68 25 5 UGe85 68 26 0 cess 68 29 0 UGe87 68 320 UGes8 68 35 0 UG689 68 385 UG6810 68 40 5 096811 68 440 UG6812 68 470 UG6813 68 495 26814 68 55 0 UGe815 68 620 UGe816 68 70 0 UGe817 68 79 5 UGe818 68 885 103 5 JG6820 68 128 0 UG721 72 295 UG722 72 295 23 72 295 UG725 72 310 UG726 72 325 UG728 72 355 UG729 72 384 210 72 40 5 211 72 445 UG7213 72 505 214 72 55 5 219 72 103 5 Table B 10 2 JG841 84 40 0 56842 84 405 40 5 00844 84 41 0 56845 84 42 0 420 56847 84 425 430 56849 84 46 0 UJG8410 84 48 0 49 5 68412 84 50 0 JG8413 84 51 0 UJG8414 84 54 0 JG8415 84 61 0 UJG8416 84 68 0 810 UJG8418 84 88 0 1015 708420 84 130 5 06961 96 56 0 56962 96 56 5 06963 96 57 0 56964 96 57 0 580 JG966 96 59 0 595 56968 96 60 5 56969 96 61 0 JG9610 96 61 5 JG9611 96 62 0 JG9612 96 62 5 JG9613 96 63 0 JG9614 96 67 5 71 5 JG9616 96 75 0 JG9617 96 82 5 JG9618 96 92 0 JG9619 96 108 0 JG9620 96 134 0 115 4 4 3v 8
72. LH5219 52 305 LH5220 52 32 0 LH5221 52 36 5 LH5222 52 405 LH5223 52 435 LH5224 52 46 0 iLH5225 52 54 0 118 Long Span Joists Available in User Files Di WT FT Di NAME Di WT FT Di WT FT LH561 56 135 56 135 LH563 56 135 14 5 LH565 56 145 H566 56 15 0 LH567 56 155 LH568 56 155 LH569 56 175 LH5610 56 175 LHs611 56 185 LH5612 56 20 0 LH5613 56 21 0 LH5614 56 21 5 LH5615 56 23 0 240 LH5617 56 26 0 LH5618 56 29 5 H5619 56 305 5620 56 32 0 LH5621 56 365 5622 56 40 0 5 23 56 420 5624 56 455 5625 56 55 0 Heo 60 145 LH602 60 145 59 LHe04 60 15 0 5 60 15 0 60 16 0 LH607 60 160 60 160 LH609 60 175 LH6010 60 175 LH6011 60 19 0 LH6012 60 205 LH6013 60 21 5 LH6014 60 22 0 LH6015 60 23 5 245 LH6017 60 27 0 29 0 LH6019 60 31 0 LH6020 60 325 LHe021 60 37 0 LH6022 60 405 6 23 60 425 6 60 465 LH6025 540 LHeat 64 185 2 64 185 64 185 LHea4 64 185 LHeas 64 185 6 64 185 LH647 64 185 64 200 LHe49 64 195 LH6410 64 20
73. Line to 50 Change Member 5 9 Change Member 54 Channels u 4 Re US RU S 102 Command eeg ee x USUS EU E GU ES 89 Concrete Dyes dye Boge Nos 112 COnGErete S RUNDE BL Ru 113 Coordinate SYSTEM p eea le Sel ee Rie 8 Copy AutoCAD command 6 86 Cross SectQiohnS ii 9 ose TRU SW 39 CS CU Members gist 106 CST a3 4 us NUI UE auo RI IDE uk at Aa see SAP2000 D DEUS Sp ene aod cee quus e prs 50 Delete 62 Density Change 54 DeScrliptlOon e eed ete se EU nue ue es 52 PON AT OWS Pg Blais Ry ups 39 Display Optiols uie Reni deis RARE ace 37 Double Ang less esa bid ev eee 102 Double Tee Depth of 72 Double Teer ORESEES wwe VEA EN Siete 72 Double Tee eX dex S e UR BU Eee 72 Double Tees ccc Seid nde Pe eie PE net be weet a gd 71 Drawings 2 xut RETO 78 Drawings 2D Elevations 80 Drawings 2D Plan eere nissai omm n uon 79 81 E Page Element
74. Names and in the DESC field of the Change Member Parameters dialog box Each name will be on the same layer as the member to which it belongs You can change all of the text layers in AutoCAD or leave them as they are The intent of Structural Desktop is to convert design information into as complete a drawing as possible Structural Desktop does enable you to deal with beams instead of lines showing pictorially correct relationships of members Create 2D Drawings Create Plan View When you click on the Create Plan View menu item in the Structural Desktop Shortcut Menu you are prompted to Select Objects at the command line Create Plan View will draw all or any part of your model with a Z value of zero and in a flat representation of each of the members When you have indicated to AutoCAD that you are through with the selection process the program will create a new drawing window in AutoCAD The program draws each member selected on the layer that you have placed it on and will create a text entity for that member on the same layer These simple text entities can be moved re sized or modified through standard AutoCAD text management tools You may review this drawing and save it using the AutoCAD menu SAVE AS You may keep this window open to refer to as you create other drawings but we recommend that you close the window in order to conserve resources and optimize the speed of your computer This drawing can serve as an XREF drawing t
75. Regeneration function In practise we have found this function too useful to bury under too many levels so we have exposed it rather than requiring the user to select the General Display Options and click OK as the only method of regenerating the drawing from the SDT database Clicking the second item in the menu Analytical Icon Options exposes a dialog box that permits you to select whether Supports and Releases are displayed with icons As future versions of Structural Desktop will permit editing of analytical information such as Member Loads or Joint Loads this dialog box will expand in these future versions to include the new display objects and permit the user to organize the screen display to hide or reveal analytical icons not relevant to the drafting functions of Structural Desktop but necessary for the display of information when you create or edit the analytical data for your file The final two items on the sub menu are Adjust Members Elements and Move All This is an entirely new function introduced in Version 4 0 Adjust Members Elements is the default state for Structural Desktop as the program will always begin each session in that mode In this state moving Members or Elements results in an adjustment of the relative position with respect to the Joint Nodes or an Offset and this is how Structural Desktop has functioned in the past Clicking on the Move All menu item changes that Selecting Joints while this item is checked
76. SDVBS View By Selection You are prompted to make a selection selected members and elements are the only ones that will be visible until you select another View function such as View All or View by Plane SDHBS Hide By Selection Each object you select within this selection will be selectively removed from visibility This can be applied to previous selections to remove members that obscure what you desire to see and work with Sequential selections will remove members without making any visible to recover visibility of an object you must use the View AII function 92 SDVBR View By Range A dialog box will appear that has two ranges one for Members and one for Elements Using the Member and Element numbers assigned from your design file and subsequently to fused or new members or elements you may specify a single range of numbers to be visible If you do not put a range into one of these boxes the relevant objects remain visible to turn off ALL of a type use the checkbox on the Display Options SDVBP View By Plane You are prompted to select a point This could be any point in the structure that you can snap to a point entered by coordinates or any other method used in AutoCAD A dialog box appears with the coordinates displayed You then select the X Y or Z coordinate to govern the selection set and a value for an envelope width Finally you select the criteria desired and click OK If you select the Y coordinate to
77. STRUCTURAL DESKTOP Users Manual Version 4 0 O 2008 Stru e e All rights r Structural Deskto Structural Desktop Users Manual 2008 Structural Desktop Inc All rights reserved Structural Desktop Inc reserves the right to revise and improve its products as it sees fit This publication describes the state of this product at the time of its publication and may not reflect the product at all times in the future Structural Desktop makes no warranty express or implied as to the suitability of the software for any specific project nor suggests substitution of software for good engineering practice and careful checking of results drawings and documents created by this software Structural Desktop Registered U S Patent and Trademark Office Structural Desktop Incorporated Autodesk Inc Autodesk AutoCAD AutoCAD Architectural Desktop and ObjectARX are registered trademarks or trademarks of Autodesk Inc STAAD Pro is a registered trademark or trademark of Research Engineers International a division of netGuru Inc GT STRUDL is a registered trademark of the Computer Aided Structural Engineering Center Georgia Institute of Technology RISA as applied to structural engineering software is a trademark of RISA Technologies SAP2000 is a product and trademark of Computers and Structures Inc STRUCTURAL DESKTOP Users Manual Contents Introduction Chapter 1 Fun
78. STRUDL through the GTI files both for input and output There are a large number of programs that create GTI files in several different formats that GT STRUDL itself can read Structural Desktop has focussed on the file structure as it is generated by GT STRUDL itself when that file is created from within the graphical user interface If you have problems reading a GT STRUDL input file then you should load the file into GT STRUDL invoke the Graphic Modeler and re write the input file from that module This will create a standard input file that Structural Desktop is calibrated to read When you first open AutoCAD and Structural Desktop is loaded the file menu for GT STRUDL will appear as shown in Figure 2 13 Preferences About Structural Desktop Documentation CSI Interface Load Autosave Backup Hold File Recover Hold File Data Load Structural Desktop Hold File Save Structural Desktop Hold File Open Structural Desktop Document STAAD Interface GT STRUDL Interface RISA Interface Load GT STRUDL Input File Create STRIJISIE Input v via v Figure 2 13 Invoking this command will display the dialog box at right as shown in Figure 2 14 Note that the dialog displays the notation Reading a GT STRUDL file near the top of the dialog box In order to load your file click the button marked Select GT STRUDL File STRUDL INTERFACE ut x Reading a GT STRUDL file Sele
79. aiting for a point to be picked by you Press Esc to exit the function or click anywhere on the graphics screen and then click Cancel to exit The grid lines that you have entered will be printed on the SD Gridlines layer on every drawing you create from this model Also when you began to edit gridlines the Display Options box for gridlines was automatically checked for you You can turn off the grid line display from this dialog box at any time but they will still print on your final drawings Modify Grid Lines This menu item brings Grid Lines EE up the grid edit dialog Grid Line Name Direction x Y z a box in Figure 8 2 To E Ix 0 000 0 000 0 000 change a coordinate of Ix 0 000 120 000 0 000 a grid line click on that 3 3 Ix onn S sm coordinate number to 4 4 1 0 000 360 000 0 000 dit it 5 5 Ix 0 000 480 000 0 000 RUM IY 0 000 0 000 0 000 7 lB IY 144 000 0 000 0 000 Add Delete Cancel Figure 8 2 You may delete a grid line by clicking on the number value to the left of the grid line label or name and clicking the Delete button When you have made changes you are satisfied with click the OK button or click the Cancel button to exit without your changes taking effect Pressing the Add button on this dialog box returns you to the function for creating a new grid line as outlined above Create Material Report Periodically through the adjustment of the members a
80. al Desktop includes gt Top of Member commands to establish finished floor levels gt Sloping commands to line up roof members Viewing commands to isolate the members by member number or location as well as through layer techniques integral to AutoCAD Creation of 3D and 2D drawings of all or part of a structure ready to be completed or passed on to a draftsman using AutoCAD alone Creation of Material Reports grouping and summarizing Steel and Concrete as simple text files for use in any word processor Retention of additional analytical data e g Loads to return to your analysis file when you have made changes in the Structural Desktop model Structural Desktop Terminology l A JOINT or NODE is a set of three dimensional coordinates X Y and Z with Z as the elevation axis From the analytical design software Structural Desktop will automatically perform the transformation of coordinates from Y axis vertical to Z axis vertical in order to function with all other AutoCAD based applications MEMBERS are objects defined by a line connecting two joints nodes The line representing the members is referred to as the Centroid of the member A member has a set of properties such as type density depth and width that are copied from the analysis file or can be added in Structural Desktop All properties can be edited within the available dialog boxes In differentiating between the ends of the member we refer to the f
81. alog box Fused cancel ii P Figure Note the Select Custom Sections button that is now B 4 displayed on the Change Member Parameters Dialog Box Selecting this button fc Custom Components Definition x would display a new Tapered Sections Tapered Tubes Custom Piles dialog which is shown in Figure 5 at e Top 12 0000 right This dialog box 18 0000 uod m comes up with all values empty Inputting the values as shown with all the 0 3750 Web i Thickness relevant data will create the same section from scratch in Structural Desktop or End 5 0000 8 0000 Bottom Depth permit you to change Width Bottom the values prior to Flange writing the file to 0 4750 STAAD Pro cancel Figure B 5 99 Finally there is the representation of the Tapered I section in Structural Desktop graphically This section appears as shown in Figure B 6 at right in the model Note that the member Centroid is depicted as being at the center of the TOP FLANGE For drawing purposes the member is designed with the larger depth at the START of the member and the member will rotate around the Top Center of the Top Flange when a Beta angle is applied This representation presents the top flange flush with the analytical centroid line Basing your positions of girts and purlins on the centroid of a tapered member means that there exist some configurations where the drawing will be ready to b
82. also Finally you would select passes through envelope 46 to pick up and view a column member that began below the roof and ended above part of a parapet perhaps With the same structure and point selected with the Y coordinate controlling the members remaining visible would be candidates for a grid line elevation Zero envelope and completely within envelope would show only those columns and beams in that narrow slice of the building while one point within would show adjacent beams framed into that wall slice Widening the envelope would show columns or beams close but not on the precisely on the plane This command uses the current actual location of the member or element This actual location includes any change of the Centroid or Face location due to offsets Where members are moved to take up their actual location with respect to where the member will be in the final position an envelope width may be required to pick that member up An example of this would be a floor with beams 18 inches deep as primary beams and 10 inch beams as secondaries offset to place all of the top of steel elevations in the same plane Where the analytical model had all members at the same centroid elevation the centroids of the smaller members would need to be offset four inches higher than the centroids of the deeper members to place all of the tops of the members in the same plane See the Top of Member command for how to do this automatically
83. alues it recognizes for Steel Aluminum l 90 00 Concrete Lightweight Concrete and Wood as 490 00 shown at right Figure 4 7 These values will uj be used in the Material Report If you change the J Length Lh 20 00 value of the density the Material text box bel ill reflect that change below will reflect that change Figure 4 7 Material Describes the material used in the structural Density 420 00 design Structural Desktop has set values it recognizes z for Steel Aluminum Concrete Lightweight Concrete and Wood These values will be used in the Material J Length Report If you change the value of the material the density text box above will reflect that change Figure4 8 J Length and K Length These entries permit you to change the member length regardless of the orientation For example if you wish the member to be six inches longer at the start a positive six in the J Length box will add six inches of length to the member at that end If the member is not orthogonal the program will calculate the necessary X Y and Z displacements to lengthen the member at the end desired and by the amount specified A negative entry will subtract length from the member at the end changed As always these manipulations are reflected in the final offset values and can be undone by entering zero offsets to reset the member to original settings Material Release and Support Display These
84. annel members passes flush with the back face of the member and is centered on the back face This is to permit precise alignment of the member when arranging it for drawing purposes The centroid of the Z section is centered as to the depth of the member but is placed to be in the center of the thickness of the material Plan views of the two members are shown Figure B 12 Table B 1 and Figure B 13 next page illustrate the measurements and designation nomenclature for the C Sections that are available for your use in the User Files Table B 2 and Figure B 14 on the following page illustrate the measurements and designation nomenclature for the Z Sections that are available for your use in the User Files In the User file for RISA 3D each of these is prefaced by the letters SD and an Underline SD_C4X216 103 Light Gage C Members murem NITET eoa 6 0 75 16 3 10 2514 0 78 14 ee ee METTRE CN oo 2800 12 543 10 216 10 0 2 000 0 75 16 3 10 Ci0X214 10 0 2000 0 78 10 213 10 0 2 000 0 81 13 10 212 10 0 2 000 0 89 12 10 2516 100 2 500 0 75 16 9 12 8 14 Light Gage C Members 0 90 4 212 0 93 nons 2 500 0 75 cax2s14 4 0 78 T E EEE 0 81 a ee C4X416 4 000 0 75 Caxata 4 4 4 000 0 78 EP 0 81 C6X2516 6 0 2 500 0 75 6 2514 6 0 2 500 0 78 C6X2512 6 0 2 500 0 89 12 4 34
85. are automatically drawn by Structural Desktop include the following structural entities TABLE SECTIONS e Structural Steel Sections AISC or British Standard Sections o Wide Flanges and similar sections W M S HP or UC UB UP Steel Tee Sections WT ST MT or UCT UBT UPT Channels and Misc Channels Angles Double Angles Rectangular and Square Tubes Hollow Steel Structural Sections Pipe from a Table or Custom Joist and Joist Girders SJI American Tables Only Light Gage Sections LGSI amp AISI American Tables Only o C CS CU o Z ZS ZU o HU Pre stress Concrete PCI American Tables Only o L s o Inverted Tees CUSTOM SECTIONS Prismatics round or rectangular in steel aluminum concrete and wood Three or Four edged Elements in steel aluminum concrete and wood Tapered I Sections defined by depth at start and end with custom depth and width of top and bottom flanges and web thickness Tapered Tubes defined by depth at start and end with custom thickness and with 4 6 8 12 and 16 sides or round Custom Piles defined by depth at start and end solid in steel aluminum concrete and wood Double Tees created from Elements with variable Leg depth and spacing CHAPTER 1 Fundamental Concepts The objective of this chapter is to help you understand the following concepts The basic process of Structural Desktop The terminology used in Structural Desktop Commands
86. as not been expressly deleted from the database or that is not fused into another member will be expressed in a 3D model with Grid Lines and layers as you have set them You do not have to select members or elements for this command Centroid Faces The objects created with the two commands above are created without centroid lines or 3D Faces If you have any need of these objects as reference points for your structure this command will extract them stripped of the additional data required to interface with Structural Desktop and will provide them in a separate 3D model 81 CHAPTER 10 Other Functions The objective of this chapter is to help you use the following functions AutoCAD Layers with Structural Desktop AutoCAD Stretch and Trim Commands AutoCAD Move and Rotate Commands AutoCAD Copy and Array Commands AutoCAD Layers with Structural Desktop AutoCAD permits you to place any AutoCAD entity that can be drawn or seen on the screen on a Layer Layers are useful for manipulating what you do or do not see on the screen at any given time and can be selectively manipulated in different paperspace viewports to hide or reveal different objects in different drawings when you plot Structural Desktop enables you to use the AutoCAD layering system with the Structural Desktop model When you first begin an initial session of Structural Desktop all of the annotation and objects are displayed on default layers created by Structural Deskt
87. ave Save as type RISA Files r3d m Cancel Process Cancel Figure 2 25 28 Structural Desktop User Provided Tables Structural Desktop produces members derived from standard tables in the format and with the parametric values that would be produced if you created the same member from the RISA 3D tables within the RISA 3D program Custom members can be produced within RISA 3D and assigned to members created with a temporary standard definition within Structural Desktop but Structural Desktop does not support custom member shapes and definitions Please make certain that what you have within RISA 3D for analysis purposes as a member definition is the member that you intended Structural Desktop will produce LongSpan Joists Joist Girders K Joists certain C s and Z s and Concrete L s and inverted T s for use with RISA 3D This use requires RISA 3D 4 5b version or later and the SDT table file SDT fil must be copied from the Structural Desktop directory to the RISA directory for RISA 3D to recognize the members Please check the Structural Desktop documentation section on reading RISA 3D files for more information or the help file in RISA 3D version 4 5b Structural Desktop has a single definition for wood members defined as the Wood material type applied to Prismatic rectangular and cylindrical members This material has been mapped in the RISA format to reflect Southern Pine Select The user may change the wood type f
88. boxes will show as checked when the joints associated with a member were supports or the member end joints had release conditions in the analytical file This section will be more involved when Structural Desktop uses this information in creating input files for analysis Fused Apply Cancel Figure 4 9 Fused Apply Cancel Fused will display a dialog box that in turn displays information about a member that has been fused such as the member numbers that went to make it up Apply is the button you must click to make changes take effect and Cancel is how you change you mind before making a commitment to changes if you are unsure of them or their effects Component Tables Dialog Box Clicking the Change Type button in the Change Member Parameters dialog box will display the Component Tables The Component Tables enable you to select member types sections from standard tables or from the Structural Desktop member tables The Component Tables dialog box has changed significantly from version 1 9 to Version 1 95 to accommodate multiple country tables and again in Version 4 0 to accommodate changes in the underlying database support of Windows 55 1520 Structural Desktop American Components x E AISC HotRolled SOT Name W Shapes W44d98 42810 11810 0 700 1 220 198 00 46224 43310 11810 0 780 1410 22400 W44xo30 42910 15750 0 710 1 220 230 00 w44x248 43620 11810 0 860 1 570 248 00 w44x262 43310 15750 0 790 1420 262 00 W
89. by GT STRUDL you must select the country that your members relate to in the Preferences dialog box of Structural Desktop before indicating the directory in which the DBX files reside Remember to use the default names when creating DBX files in GT STRUDL and models should be constrained to those files displayed under GT STRUDL when the respective country BRITISH EUROPEAN is selected 139 CANADIAN Tables The following member types have been provided in the Structural Desktop database for engineers who use Canadian tables and codes W types or I shaped members W WW S HP Channels C MC Steel T s WT WWT MT ST HPT Tubes Square and Rectangular Angles Double Angles both Short and Long Leg Back to Back Pipes Prismatic members either steel or concrete can be defined as per each program and will display All dimensions are assumed to be in Metric and are converted to Centimeters inside Structural Desktop UK Tables The following member types have been provided in the Structural Desktop database for engineers who use UK tables and codes W types or I shaped members UC UB UP JO Channels CH Steel T s UB and UC Tees Tubes Square and Rectangular Angles Double Angles both Short and Long Leg Back to Back Pipes Prismatic members either steel or concrete can be defined as per each program and will display All dimensions are assumed to be in Metric and are converted to Centimeters inside Structural
90. command line or by using the AutoCAD menu item Format and selecting Layer The layers shown in the dialog box are those that Structural Desktop requires to operate You should never remove or modify the names of these layers Layer Properties Manager Named layer filters Invert filter d Apply to Object Properties toolbar HEI oues Current Show details Bl Magenta El Green Bl Green O White Continuous Continuous Continuous Continuous Continuous Default Default Default Color 3 Default Colo Default Color 7 6 Total layers 6 Layers displayed OK Cancel Help Figure 10 2 Clicking the New button in the dialog box above enables you to type a new layer name Any layer name that begins with a number or a letter will be displayed below the AutoCAD layer 0 zero The Structural Desktop layers should therefore be separate from and not interfere with easy reading of your own layer names Double clicking on any of the properties of any layer permits you to edit those properties such as choosing a new color for the layer If you are operating AutoCAD with a white screen background for example you may prefer a color other than yellow for the ISD Centroids layer Changing the Layer of an Object Note We suggest that you create your new object layers from the top of the structure to the bottom This arrangement allows you to turn off eac
91. ct GT STRUDL File File Title Comment cael Figure 2 14 21 Selecting this option will invoke the dialog box as seen in Figure 2 15 to the left Double clicking on a file or clicking a file and then Open will return to the dialog box in Figure 2 15 to the right il EA SDT GT STRUDL INTERFACE E Xj STRUDL Lookin S Reading a GT STRUDL file 2 Dale gti 2 ParametersNew2 gti D Debug Crosstests Parameters GTStrudl Dale gti 2 Dale1 9ti S ParametersOut gti 2 DaleOuT gt Select GT STRUDL File 3 Member Parameters ASD9 gti I2 NewDale gti S Parameters gti File Title DALE I2 ParametersDel gti 2 ParametersNew gti Comment File name Open Files oftype GTI Files t Cancel Process Cancel 4 Figure 2 15 The program will display the Title and Comment from the first line of the GT STRUDL input file if the file has them You may return to the selection process as many times as you wish to change the displayed file and when you have the file that you want you may click the Process button Structural Desktop will then read the GT STRUDL inputs and generate a model displaying nodes lines for members 3D Faces for elements and it will store the Member Properties Element Thicknesses Material Properties and Loads and Load Information for use in re creating a GT STRUDL file from the model Creating a GT STRU
92. ctural Desktop will be exported as a single member both for 3D models and in plans and elevations For reference the newly created member is given a new member number but retains the properties of the members that were fused The fuse command will reject members that do not have joints in common have different sections or properties different Beta Angles or are not in a straight line When writing an analytical file the fused result is ignored the members making up the fused members are used to create a new analytical file Defuse This command will turn a selected fused member back into the original segments that were fused to create it When a fused member is defused the individual members will have the original properties and member numbers that they had before fusing Offsets or layer changes that are applied to a fused member are NOT applied to the original members so defusing a member is a return to the original position for those members Defuse will perform its function on a fused member even after the model is saved in a hold file and reloaded No matter how many times you open and save a hold file the member that was fused will always retain the information required to extract the original members Change Line to Member This Structural Desktop command enables you to add a member to your structure by using the line command from AutoCAD To implement this feature 1 Set the Current Layer in AutoCAD to the desired layer 2
93. d file before proceeding You can always return the members you modify to their original position through the Change Member Parameters command and by zeroing out the offsets that this command produces Click the command on the menu then select all of the members you wish to modify The program is designed to ignore columns in this instance if the column is truly vertical In the New Elevation text box enter the true elevation of the top of the members in INCHES or CENTIMETERS When you click OK the screen will update and the members will be adjusted as necessary to place all of the tops of the members in the flat plane at the elevation you specified 59 It should be noted that elements will also follow the Top of Member command Since elements commonly rest on top of the members that support them the program is constructed to place elements with the plate of the surface at the elevation specified If the elements were created to extrude upward counter clockwise numbering then the representation of the element will display that element with the bottom at the elevation given to the command Elements that extrude in the opposite direction will have their tops at the elevation specified Top of Member Slope The Top of Member Slope function enables you to Take an analytical model with a flat roof and modify the roof to a designated slope Take an analytical model with a designated roof slope and adjust members so that the tops of
94. damental Concepts DI usus Chapter 2 Model Creation ny Rec Chapter 3 Display Viewing and Selection Chapter 4 Modifying Members US PU Chapter 5 Complex Members Chapter 6 Element Modification Commands jjj pem Chapter 7 Complex Elements Tb Chapter 8 Creating Grid Lines and a Material Report p o Chapter 9 Creating Drawings and Output y Chapter 10 Other Functions Appendices 142 Index 2008 Structural Desktop Inc All rights reserved Structural Desktop Users Manual INTRODUCTION The Program Book s Intent Object Modeling Features The Program The purpose of Structural Desktop is to convert structural information from a single model to Structural Contract Documents Since different structural engineering offices have different flows of information Structural Desktop works either with or without analytical design software Designs drawings and material reports are placed firmly in the hands of the engineer Structural Desktop can be used to Move models created in CAD packages into analytical files Move models from analytical files into Structural Desktop Create drawings models and material reports from the Structural Desktop Model This independent approach permits maximum flexibility in the flow of engineering information in your office Structural Desktop was written by Structural Desktop Incorporated and with the release of Version 4 is designed to run
95. e converted into a model or drawn as two dimensional output drawings without any offsets being applied These members will display in your Material Report with a name derived from their dimensions Members will not be considered identical unless the lengths are identical in the Material Report The weights of each member are calculated based on a calculated sum of the flanges and web Tapered Tube Sections Selecting the second tab of the Custom Components Definition dialog box will permit you to enter values to create a Tapered Tube Snape poca H section as shown in Figure B 7 at right Thickness 5 3750 Start Depth 18 0000 Custom Tapered Tubes are both read and written to a End Depth _ 120000 STAAD Pro file You have the choices of 4 6 8 10 12 and 16 sided tubes as well as a round section and you specify the outside diameter at start and end and the thickness of the ok OK Cancel tube The centroid is Custom Components Definition x Tapered Sections Tapered Tubes Custom Piles through the center of the tube Figure Tapered Tubes have an estimated weight which is B 7 calculated and provided in the Material Report 100 Custom Pile Sections 2 Custom Components Definition Tapered Sections Tapered Tubes Custom Piles Structural Desktop now has a member that is not available for analytical use Material Wood Custom Piles are defined as StetDepth 15 0000 a frustu
96. e or from when 1 Coordinates the member was created or fused 1 o x o EU o bd o e Joint K Represents the joint number at the z 20 7 End of the member L Offsets x ao z x 30 e Coordinates Displays the member ly fis z y fis coordinates of the Start joint J and the End 2 D ol 2 joint K of the member Joint coordinates cannot be changed in Structural Desktop Relative Absolute New joints can be created only by creating new members and old joints cannot be changed Figure 4 5 Members can be moved rotated or changed in any way imaginable by changing their offsets FROM these immutable points e Offsets Display and permit adjustments of the member Start or End An offset shows the displacement of the real member centroid from the analytical member endpoints If you MOVE the member using the AutoCAD MOVE command the offsets will be updated to respect the moved endpoints new offset situation At any time a member can be returned to the original position by entering zeros for this entry so you can also move the member by changing the offsets When you edit an offset the default value is Absolute You must click one the Relative button for it to override the Absolute setting The difference is o Relative coordinates add the new offset values to the existing values If you want to move six inches MORE in X Y or Z use this setting O Absolute coordinates replace the ex
97. e selects the member object and connects to all the data for that object but you must select the Centroid of the member if you are in Solid Objects mode to accomplish the same thing 40 Selecting just a solid for a function without selecting the centroid of the object will cause an AutoCAD non fatal error We do not recommend that you completely avoid using the Solid mode but use it sparingly to find the information you want such as interference or location of an edge You can then return to the Envelope or Centroid Face settings Once you have completed your model you can create a similar 3d Model for manipulation in regular AutoCAD The AutoCAD 3d Model the program is designed to create unlike the Structural Desktop Model has no special database or other baggage to carry The exported 3d model is purely AutoCAD and purely a drawing file for you to use as you see fit More information about creating a 3d Model for use outside of Structural Desktop in AutoCAD or compatible programs can be found in Chapter 9 Numbers Display The five check boxes under the Numbers Display section of the Display Options dialog box are for Joints Members Plate Elements Solid Elements and Surfaces Diaphrams Each toggles on or off a text display of the numbers associated with the objects in question The numbers are those from the original input file When members are Fused a new member is created and for consistency is given a new number higher tha
98. ed ADT and on the installation CD ROM that came with your Structural Desktop package This complete directory is also available for download from the Structural Desktop website The script file can be called from within a Windows shortcut a desktop icon and will load Structural Desktop when that shortcut is invoked Please note that a space is included at the end of the line of text after the closing quotation mark This executes the command without having to press the Enter key each time you run Structural Desktop 133 STEP 2 Create a Profile to run Basic AutoCAD Start your copy of Architectural Desktop Go to the Options menu item This is found at the bottom of the right click menu or the Tools menu item Click on the Profiles tab Click the ADD to List button Enter the Profile Name SDT If you wish you may enter a description such as Structural Desktop Click the Apply amp Close button Click on this newly created SDT profile and then click the RESET button Click Yes to the Alert that pops up You DO want to reset this profile Click OK on the Options Dialog Box to close it Exit Architectural Desktop You do not need to save the drawing file Note Creating a separate profile will guarantee that no AEC functions are demand loaded This permits you to get maximum value from your system memory and resources when you are running Structural Desktop and helps to separate the two programs 134 STEP 3
99. embers These members are lumped together for purposes of Material Reports They are defined by depth width and thickness To assist in positioning the centroid line creates an angle member as if the centroid represented the back corner of the angle and is not in the position of the physical centroid center of gravity as shown in the steel tables Figure B 10 shows the centroid in relation to its angle Channels and Miscellaneous Channels Channels and Miscellaneous Channels are recognized and incorporated into Structural Desktop with the names given in the steel manual These members are represented by their depth width thickness of flange and thickness of web Representations are exact in these dimensions but do not include fillets at corners The centroids of members with these shapes have been set for as shown in Figure B 11 This is to permit their analysis position Structural Desktop to pass exactly down the center of the back face to represent a location flush with another member on the back plane Hollow Steel Shapes Square and Rectangular Figure B 10 Figure B 11 Tube sections are defined by depth width and thickness Representations are exact in these dimensions but do not include fillets at corners Tubes are drawn with a single line indicating the outside surface The centroids of tubes pass exactly through the center of the faces just as with rectangular prismatic members Figure B 1
100. ement These tables currently work with STAAD Pro and GT STRUDL files The regular American Tables working only with Imperial units were also made available in Version 1 95 for use with all supported programs The unique improvements between Version 1 95 and Version 2 0 are STAAD Pro Interface Improvements Tapered Sections gt Tapered I sections Custom Tapered I Sections are now read from the STAAD Pro file can be changed or created in Structural Desktop and are written to the STD input files when Structural Desktop creates them The weight and dimensions of these members are included in the Material Report created by Structural Desktop gt Tapered Tube Sections Custom Tube Sections are now read from the STAAD Pro file can be changed or created in Structural Desktop and are written to the STD input files when Structural Desktop creates them The weight and dimensions of these members are included in the Material Report created by Structural Desktop Piles Structural Desktop now includes a PILE member for drawing and Material Report purposes This member can be specified in terms of starting and ending depth of a round member and is treated as a truncated cone Density for the Pile can specify a Wood Concrete or Steel pile The parameters of this member are not written to the STAAD Pro file beyond the endpoints and location member number assigned Offsets Structural Desktop Version 1 5 read Offsets from a STAAD file Vers
101. ent database This file contains all joint coordinates member incidences element incidences member properties element thicknesses and constant values If members are FUSED in your Structural Desktop Model the fused member will be ignored but the sub members that it is composed of will be written to the STAAD file with the current Member Properties Constants and Beta Angles Structural Desktop does not write Offsets to a STAAD file because these are used primarily to adjust members to real world relative positions it does however read Offsets when they are included in a STAAD file 90 Members created in Structural Desktop that rely on the USER PROVIDED TABLES are defined in terms of those table names A section of a STAAD file created using these members is provided below In order for these members to be used within STAAD II STAAD Pro you must copy the relevant USER files from the directory on your hard disk or on the supplied installation disk to the same directory from which you intend to run the STAAD file created The files are located in C Program Files Structural Desktop STAAD User Files SDCTSTRUDL CreaTe STRUDL Creates a GT STRUDL file from the current database This file contains joint coordinates member incidences element incidences member properties element thicknesses and constant values Members created in Structural Desktop that rely on the USER PROVIDED TABLES are defined in terms of those table names Whe
102. entire model in AutoCAD with this command Change Line to Member has the side effect of eliminating any object which is not a joint member or element in Structural Desktop For this reason the Change Line to Member command has been augmented in Version 1 6 to perform both the functions Change Line to Member and Change Face to Element of the lines you select will be changed to members and will be numbered in the order in which you selected them and all faces you select will then be changed to elements and given numbers starting with the next number higher than the members To minimize confusion either command will perform all these functions identically This change permits you to import a drawing with both lines and faces and change all of them that you want to change with one command Prior to this change Version 1 5 and previous you would have had to insert the drawing twice to get all your objects once for the members and a second time for the elements Change Member Parameters Undo After completing this section you will be able to e Invoke the Change Member Parameters dialog box in Structural Desktop Use the dialog box to modify lengths and offset members e Determine the coordinates of a member e Change the type or material of members e View member information e Undo your changes The Change Member Parameters menu option in Structural Desktop will display the dialog box shown in Figure 4 2 on the next page This
103. er selected on the layer that you have placed it on and will create a text entity for that member on the same layer These simple text entities can be moved re sized or modified through standard AutoCAD text management tools The difference in this drawing from the same drawing that would be created from Create Plan View is that the objects selected are drawn so that the X axis in the drawing is the same as the X axis in the model and the Y axis in the drawing is the Z axis in the model Joists seen from an end on view will draw only the top and bottom chords and the bearing Seen from the side they will be drawn in 2D as a pictorial representation of their actual side view Grid Lines parallel to the Y axis will show up at the X coordinate value for that Grid Line and will be vertical dimensioned using the current default dimension style in your template for new AutoCAD drawings and labeled Grid Lines parallel to the X axis will be ignored in an X Z elevation just as you would expect You may review this drawing and save it using the AutoCAD menu SAVE AS You may keep this window open to refer to as you create other drawings but we recommend that you close the window as soon as it is convenient in order to conserve resources and optimize the speed of your computer Create 2D Drawings Create Elevation Y Z When you click on the Create Elevation Y Z menu item in the Structural Desktop Shortcut Menu you are prompted to Select Objects at
104. er you wish or add a note at the end of the description to specify special treatment at a later time This label will display on the screen when you click the Display Options Member Names checkbox and will be the name displayed on your 2d drawings Member Num 52 e Member Num Indicates the member number originally extracted from the analytical file In the event of a new member or a member that has been number assigned when the member was created This is a drop down box This means that you may click on the box to see the list of members that have been selected See Figure 4 4 The details that display on the rest of the dialog box Member Num X Joint J x 0 Y 0 2 2 50 Figure 4 4 will derive from the member currently showing in this box This is important to consider when some details may be different Changes you make in the Change Member Parameters box will be applied to ALL of these members when APPLY is clicked If you do not change the member type for example then they will not all be changed to be the same member type Similarly if you select a dozen members of different types different beta angles and different offsets and change the beta angle to 45 degrees the different types and offsets will not be changed but all the beta angles of all the members that have been selected will become 45 degrees e Joint J Represents the member Start joint Joints Joint number from the analytical fil
105. ers and or Elements that are selected As long as Joints and Members are moved or rotated together the SDT database will update the coordinates of the Joints as they will be written to an analytical file and maintain relative offsets between the Joints and Members Elements Selecting a group of members and joints with this command option active will also permit you to Stretch a group of members and joints together In order to reposition a joint using stretch the bounding box must completely enclose the circle that represents the joint Only Move Stretch and Rotate commands using the World Coordinate system are permitted It cannot be stressed strongly enough that using the Viewing Commands from SDT to hide Members Elements the Display settings to turn off Joints or Members Elements or the Layer options within AutoCAD to freeze layers with Joints Members Elements make it impossible for these unseen model components to be selected This can result in movements that will separate your structure in unanticipated ways Until you are familiar with the consequences of setting this preference to Move All you should proceed with caution and back up your Hold file frequently 85 The AutoCAD Copy Mirror and Array Commands The Copy Command in AutoCAD can be used with Structural Desktop members and elements but the results are unproductive in returning to or producing an analytical file The members and elements copied will still have the same j
106. es generated are not Structural Desktop Members until you use the Change Line to Member command you can experiment freely with these lines without actually causing any change to a Structural Desktop internal database You can also add 3d Face objects to this model that will become Structural Desktop elements when you use either the Change Line to Member or Change Face to Element command When you are satisfied with the combination of successive uses of this generator and basic AutoCAD functions and you can use the Structural Desktop commands Open Structural Desktop Document and Change Line to Member to change your model of simple lines into Structural Desktop members 35 Saving Your Work The Structural Desktop Hold File Once you have loaded a file to create a document or used the Open Structural Desktop Document menu option you have the responsibility to save your work in a Structural Desktop Hold File This file format is the ONLY way to resume work on a Structural Desktop Model and is your best protection against loss of your work from any cause To resume work on a saved model use the Load Structural Desktop Hold File menu option When you save and load an AutoCAD drawing file the background information permitting manipulation of the Structural Desktop objects as database objects is not saved in that drawing file This is done so that the final output of Structural Desktop your drawings should be 100 compatible with every drafting
107. es to the AISI American Iron and Steel Institute These members were added with the release of Version 1 6 The CS members are similar to the C members of the LGSI Et table The CU members are without the distinctive lips of the C or CS as shown in Figure B CS 9X3 1 0 15 at right Both types of AISI member have si Figure been created to display with the B 15 centroid line centered the midpoint of the back face The naming convention adopted for these members in Structural Desktop is also similar to that of C U 1 01 2 1 4 the LGSI members for compatibility with some of the analytical programs Structural Desktop will read these members from RISA 3D for example in the native AISI format that RISA 3D uses The CS9X310 would be the 9CS3X135 In this case the 9 and CS are reversed and the 135 representing 135 one thousanths is converted to the nearest gage 10 A 10CUI 25X071 likewise is converted to CU10X1214 in line with other naming conventions for custom members However due to the fact that this conversion results in a name nine characters long the name is shortened by dropping the X in the center resulting in CU101214 a CU 10 by 1 2 5 with 14 gage material If you read this information from a RISA file the members will be correctly read and the names will be changed If you use our User files to access these members in another analytical design program the names w
108. et are Pickbox Auto Window Crossing Window Fence Reference your AutoCAD manual for a complete listing of the selection set commands and their functions 48 CHAPTER 4 Member Modification Commands The objective of this chapter is to help you understand how to use the following methods or functions to modify add or remove members Fuse Members Defuse Members Change Line to Member Change Member Parameters Undo The Intersect Break Command The Component Tables Top of Member of Member Flat Top of Member Slope e Delete Member Element Fuse Analytical files contain members that are subdivided A member that connects to another member somewhere along the actual members length must be connected at a joint For forces to properly be distributed this joint breaks the actual member into two When a number of members are connected there may be two or more analytical members that represent only one member in the structure The FUSE command allows the fusion of selected segments of a member that has been subdivided for the analytical model An example of this is found in Figure 4 1 below showing members in this case bar joists connected to a support beam For this support beam to be drawn as a single member the analytical segments need to be fused into a single member The fuse command enables you to do this and creates a new member Figure 4 1 49 Members that are fused in Stru
109. ete model which includes the stiffness of the frames The members you include from your user files will also be drawn in your drawings bringing your drawings that much closer to completion To use these files in STAAD you must include copy the user files in the appropriate folder or directory This should be the same folder that has the STAAD input file and the file must remain there during subsequent runs of the analysis file Please refer to the STAAD or STAAD Pro references documentation and help files for further information on the use of User Created Tables and to Appendix B for information about the members available under each type The files available to you for use with STAAD or Structural Desktop are as follows Name Contents Example JG DATA DAT Joist Girders JG3218 LH DATA DAT LongSpan Joists LH2412 K_DATA DAT ShortSpan Joists K1210 CEEZEE DAT LGSI and AISI Z12X3512 L_T_DATA DAT Concrete L s and T s T24IT48 A brief section of a STAAD file that would use some of these objects is listed as an example on the next page 122 An Abridged Sample Staad File with concrete PCI LGSI AISI and LongSpan Joists STAAD SPACE SOME CUSTOM MEMBERS UNIT IN KIP JOINT COORDINATES 1 0 000 0 000 0 000 2 0 000 60 000 0 000 MEMBER INCIDENCES 112 223 334 START USER TABLE TABLE1L T DATA DAT TABLE 2 CEEZEE DAT TABLE 3 LH_DATA DAT END MEMBER PROPERTY 1 TO 36 PRIS YD 24 0 37 TO 49 UPT 1 R18LB20 50 TO 63 UPT 1 LISLB24 6
110. f a member or element it will remain on that layer and display accordingly If a layer is turned off or frozen elements or members on that layer will not display because AutoCAD has turned them off but they will still exist and be updated each time you perform an operation that changes this display Between layering options Object Display options in Structural Desktop and the Viewing Options discussed below you have three very powerful tools to control what is on the screen at any given time Likewise you should always remember that there are at least three different places that you may have to check to display an absent member 38 Member Display The Member Display options are designed to give you graphic access to information about members The Cross Sections option displays a cross section of the member s shape on the Centroid line representing the member and is oriented to display the beta angle of the object This is the fastest and least complicated method to determine what type of object you have and the orientation You could use this option to determine the orientation of a channel for example The Direction Arrows option displays an arrow on the Centroid Line indicating the direction the member was created from the J START to K END of the member This orientation information is very important to know when you are modifying one or the other end of the member of the member commands that refer to one or the other ends
111. face with structural analysis packages while this information is not necessary for ADT In order to minimize drawing files and give the best performance possible with any computer it is strongly recommended that SDT be run in a plain Vanilla AutoCAD environment and that ADT be run in a separate environment and with the specifications set by ADT documentation and any additions you may have Setting this up is not difficult requires only a few minutes and only has to be performed once for each machine upon which you wish to run SDT Once you have installed Structural Desktop in your Program Files directory folder on drive C there is a simple five step process to set up three different icons on your desktop One icon will invoke Architectural Desktop with no changes to the program and with all of the unique capabilities it provides The second icon will invoke a plain AutoCAD session and load Structural Desktop for you The third icon will open Architectural Desktop with a template that holds definitions for all of the supported structural members You will use this template file to create the final model in ADT from your Structural Desktop model STEP 1 Create a Script file to run Structural Desktop The file SDT SCR contains the following line arx L c Program Files WStructural Desktop consConsEnt arx Copy this file into your Architectural Desktop directory SDT SCR can be found in your Structural Desktop directory under a sub folder nam
112. g the Stretch command on Members and Joints with the MOVE ALL menu selection active are covered in the next section 84 The AutoCAD Move and Rotate Commands With the Other Options menu item set to Adjust Members Elements The Move Command or Rotate Command in AutoCAD will change the offsets of a member or element to reflect whatever changes you apply It should be noted that large changes in these values will invalidate the possibility of extracting a meaningful analysis file from the Structural Desktop database should you wish to do so later For large moves consider creating new members or elements and deleting the current ones For small moves however the move command is a quick way to position an entire member or element especially if you have reference points from that object or other objects to use with the snap option It should also be noted that due to the high degree of precision in AutoCAD any rotation of an object in 3 dimensional space would almost certainly result in very long decimal fractions for the offset values These long decimals may be inconvenient to work with For clarification ROTATING a member around the centroid will NOT update the Beta Angle value This must be done through the Change Member Parameters dialog box or to a 2D or 3D object in an output drawing in plain AutoCAD With the Other Options menu item set to Move All The Move Command or Rotate Command in AutoCAD will move any Joints Memb
113. govern you will select everything at that Y coordinate plus or minus the envelope width along all X and Z values If you select the criteria Completely Within Envelope all the points of a member or element must be within the envelope for that object to be selected The criteria At Least 1 Joint in Envelope requires that a single point or more of the endpoints of an object lie within the envelope of selection Finally the criteria Passes through Envelope will select any member that interacts with the envelope in any fashion whether it has an endpoint within the envelope all points within the envelope or merely passes through the envelope Whatever is selected through this process becomes visible and all other objects become invisible SDVALL View ALL Sets all objects to visible and recreates the screen from the database information This is the only way to recover objects once they are set to invisible by the Structural Desktop conventions 93 Parametric Editing Commands These commands permit you to change the descriptions and parameters of objects in dialog boxes and the objects in the database shown on the screen and in drawings will change to match your new information Members Only Commands SDFUSE FUSE Command to unify two or more Members into a single new Member This Member will be assigned the next available Member number that is higher than any existing Member or Element number By unifying all of the sub members
114. h layer after it is completed making it much easier to locate and select the objects in the next layer Using the grip method within AutoCAD is a very quick way of changing the layer of an object As you click on each member with the left mouse button or otherwise select members please note that members must be selected by clicking on either the centroid 83 line or some line of the envelope of that member You will know a member is selected because it will acquire grip points and the display of all lines in that member will display as dashed lines In the Layer Control Drop Down List see Figure 10 1 select the layer by clicking it with the left button on the mouse The grip selected Members will transfer to that layer When they do they change color to match the color of the layer upon which you have placed them You can check the color to make certain you have put them on the correct layer To freeze an AutoCAD layer find the second icon from the left in the Layer Control Drop Down List which is a small sun By clicking on this sun icon it changes to a snowflake AutoCAD will present a dialog box telling you that selected objects are being frozen click OK and the objects will no longer display that are on that layer Other methods of changing the layer of an object include the command line command Change or the command Chprop Details about these commands are available in the AutoCAD Help files and in the ma
115. his function will list the members and elements on the screen and ask you if you are certain that you want to delete them If you confirm that you want them deleted they are gone beyond retrieval We strongly suggest making a special hold file of your data at the point you are when you wish to delete members A hold file can be created that has some derivative of the day s date for example so that you may return to your data in that configuration at any time in the future You cannot make too many backups 62 CHAPTER 5 Complex Members The objective of this chapter is to provide information on using Structural Desktop members that we refer to as complex members Complex members may be analyzed in your analysis program through the use of the User files that we provide Currently the complex members are only available in Imperial Units with American Tables When these single centroid line members are extracted to or created in Structural Desktop they are composed of structures of smaller members that are arranged as a pictorial representation of joist girders longspan joists and shortspan or bar joists This chapter will help you to understand in detail how to use the Change Joist Parameters function Change Joist Parameters Dialog Box Just as the Change Member Parameters dialog box is the heart of making modifications to the usual members in Structural Desktop the Change Joist Parameters dialog box Figure 5 1 enables you to make cha
116. ical design program that produces DXF files or any drawing file that is compatible with your version of AutoCAD can be inserted as a block and exploded Lines and faces to be changed to Structural Desktop objects will retain their layer information and color However do NOT try to use lines that are only inserted through XREF or that are still part of a BLOCK Simple lines and simple 3D faces are the rule You can use existing drawings to create lines and insert them into this model or you can draw lines copy lines array lines or mirror lines to create a structure Any AutoCAD tool such as trim extend or offset can be applied to these lines BEFORE they are changed to MEMBERS to get them precisely where you want them Since lines do not become members until changed you may use any construction lines or reference lines you wish Lines that are not selected at the time you Change Lines to Members will be erased by Structural Desktop as part of the database management cycle See the section on Changing Lines to Members for more information In like manner you can create or import 3d Face objects that can be changed to elements and that is covered in the section on Changing Faces to Elements 32 The Structure Line Generator Henge Line ta Member Structural Desktop Version 1 9 included rend C structure generator This function permits the quick hange Joist Parameters generation of simple repetit
117. iles Autodesk Architectural Desktop 3 adt arg This shortcut loads AutoCAD loads a template drawing and loads the necessary ADT program modules to supply the ADT user interface and custom objects To change this icon to load Structural Desktop Change t Aec Arch Imperial Intl dwt to t SDT dwt Change p C Program Files Autodesk Architectural Desktop 3 adt arg to p SDT Add SDT to the end of the target text This invokes the script file mentioned in step 1 above to load Structural Desktop Note You can copy and paste the text from the target box into a blank notepad file for editing and then paste the results back into the target box on the shortcut properties dialog 135 If your ADT is on drive C in the program files area the target box will now read C Program Files Autodesk Architectural Desktop 3 acad exe t SDT dwt p SDT b SDT or if you installed ADT on drive D you may require D Autodesk Architectural Desktop 3 acad exe t SDT dwt p SDT b SDT Close the Properties dialog Structural Desktop will now load when you click on this icon This sequence causes AutoCAD to load loads the Template file for Structural Desktop loads a Profile without any calls to Architectural Desktop functions or menus and uses a Script to load the Structural Desktop program Any changes you wish can be made to the Template file SDT dwt such as adding more linetypes changing dimension styles or text styles e
118. ill be in the shortened format in the User file These names are listed in the tables that follow 106 Table B 3 and Figure B 16 below show the names and sizes of the AISI CS members as used in the User Files Designation Depth Width Thickness Gage WT FT icsi51620 1 5 1 625 0 375 0 035 20 0 616 1 625 0 375 0 045 18 0 783 icsi51616 1 5 1 625 0 375 0 057 16 0 977 icsi51614_ 1 5 1 625 0 375 0 071 14 1 188 ics251620 2 5 1 625 o 375 0 035 20 0 735 5251618 2 5 1 625 o 375 0 045 18 0 936 ics251616 2 5 1 625 0 375 0 057 16 1 171 ics251614_ 2 5 1 625 0 375 0 071 14 1 429 ics3x1620 3 0 1 625 o 375 0 035 20 0 793 53 1618 3 0 1 625 o 375 0 045 18 1 014 CS3X1616 1 625 0 375 0 057 16 1 269 CS3X1614 0 071 0 060 0 075 0 500 0 090 13 2 797 0105 12 3 236 3 000 0 500 csax3i0 3 0 3 000 0 500 0 135 10 4 097 5351620 3 5 1 625 0 500 0 035 20 0 885 5351618 3 5 1 625 0 500 0 045 18 1 13 5351616 3 5 1 625 0 500 0 057 16 1 412 5351614 3 5 1 625 0 500 0 071 14 1 732 54 1620 4 0 1 625 0 375 0 035 20 0 895 54 1618 40 1 625 0 375 0 045 18 1 143 54 1616 40 1 625 0 375 0 057 16 1 436 CSAX1614 0 071 14 1773 0 060 2 508 40 4 000 0 500 0 075 14 3 114 lcsaxa13 4 0 4 0
119. in the Shortcut Menu The AutoCAD World Coordinate System The files used and needed in Structural Desktop The Structural Desktop Process The objective of Structural Desktop is to assist you the engineer to connect your analytical design model to final drawings and contract documents The analytical design model contains the physical information required for analysis The Structural Desktop model represents actual relationships of the structural components required for construction The Structural Desktop Program links the two giving you many options simple commands and a powerful program You can begin by Creating a model in Structural Desktop using AutoCAD and any information and drawing files you have You can create analytical files from that model OR gt Creating a model in your familiar analytical program through their methods Performing your analysis consists of adding information on loads design codes and other criteria specific to an analytical package Once you have completed your structural analysis and your data file fulfills your design requirements gt Create a Structural Desktop model from your analytical file gt Modify the analytical file to true length members in their correct relative positions Create the plan views elevations and sections required for construction documents Complete dimensions annotations and notes in AutoCAD and plot Structural Desktop can be used before and afte
120. ing developed that handles the objects named under this section and will permit their visibility through these options This list includes but is not limited to Base Plates Cap Plates Connections Stiffeners and Bolts and Nuts Structural Desktop Regeneration When you have made your selections from the Display Options click on the OK button with your mouse At this time Structural Desktop performs a Structural Desktop Regeneration of the entire model Everything on the AutoCAD screen is erased Structural Desktop then recreates the model from the database This assures the user that what he sees on the screen is what the model has in the database and is the data that will be used to save a hold file or create output drawings and Material Reports This method wipes everything from the AutoCAD session that is NOT a part of the Structural Desktop database Every line circle polyline xref or block is erased Only Joints Members and Elements remain With planning this can be very useful You can draw construction lines and use them to create other lines These can be changed to new members and everything but the actual members old and new will disappear A block can be inserted used to locate a physical change in a member and will disappear but will still be available to be inserted again as long as the current session lasts This operational method is a consequence of Structural Desktop s design to deal with structures as collec
121. ing types of members Name Contents Example StructDT ds Joist Girders JG3218 LongSpan Joists LH2412 ShortSpan Joists K1210 LGSI and AISI Z12X3512 Concrete L s and T s T24IT48 124 Appendix E RISA 3D User Files The RISA 3D user file is installed on your hard disk at the time that you install Structural Desktop The file is named SDT fil and can be found in the folder C PROGRAM FILES Structural Desktop RISA User Files In the event that this file should be unavailable or corrupted the SDT fil file may also be found on the original Structural Desktop installation CD in the folder CD ROM USER_FILES RISA All of the members in these files require further design of the member itself once the loads and forces associated with those members have been determined Using the members in the user file will permit you to generate the selfweight loads for these members transfer loads applied to these members to the structure and will provide a more complete model which includes the stiffness of the frames Any members you include from your user files will also be drawn in your drawings bringing your drawings that much closer to completion To use this file in RISA you must copy the user file SDT fil to your RISA directory on your hard disk You must also be using RISA 3D with the Version 4 5b patch or later To determine which version of RISA 3D you are currently running run the program and under Help on the drop down me
122. ion 2 0 now writes the offsets back to a STAAD Pro file to preserve your work in a back and forth situation The addition of offset information can also be useful for users who wish to use the STAAD Pro file in generation of a CIS 2 format file for further processing 129 STAAD Pro Interface Improvements continued Releases Structural Desktop now permits releases to be assigned to members quickly When you load Structural Desktop three new linetypes are automatically loaded into AutoCAD These are REL BOTH lt gt Released Both Ends MY MZ REL START lt Released at the Start MY MZ REL END gt Released at the End MY MZ Changing a Structural Desktop member to any of these mutually exclusive linetypes will update the internal database Thereafter the member will display the linetype on the model drawing and creation of a STAAD Pro file will export these releases to STAAD Pro This functionality does not currently extend to reading the releases from the input file although that is planned for the next release of Structural Desktop GT STRUDL Interface Improvements Structural Desktop Version 2 0 has been upgraded to reflect changes in GT STRUDL table names for the changes between Version 26 and Version 27 When generating a GT STRUDL input GTI file the user is now prompted for P hysical or A nalytical members Selecting Analytical members will produce the same GT STRUDL file as before with fused members bei
123. ircles representing joints e Introduced Tutorial and Manual available through Adobe PDF formats from the Structural Desktop menu e Permitted Line to Member transformation of lines not on Layer 0 to preserve layering in complex pre drawn AutoCAD drawings e Created an optional upgrade for users of AutoCAD 2004 May 2003 to account for total incompatibility between ARX modules for AutoCAD 2000 2002 and AutoCAD 2004 Version 1 95 Compiled October 2003 Version 1 95 included the following improvements e Modified Component Table to accept variable Tables from multiple countries Modified base tables for Database Format Component Tables now Tree based rather than Spreadsheet based in display format e Modified Input Routines to permit input of a model without closing AutoCAD between different models e Button Toolbar introduced for toggle between Envelope and Line display modes e Significant groundwork laid for additional improvements in Versions 2 0 and 2 1 currently under development 128 Version 2 0 Compiled August 2004 Structural Desktop Version 2 0 is based on Version 1 9 and incorporates changes that were released in overseas markets as Version 1 95 This version tested a new database format for tables of sections and a separate module for section selection American Canadian British and Euro sections were included in tables that are wholly Metric designed for use with input and output files that are metric in measur
124. irst joint of the ordered pair that create the member as the Start or J joint and the second as the End or K joint A line can also represent a Complex Member that is representative of more than one section such as the various joist members which have an additional dialog box for editing special features An ELEMENT connects three or four points as a plate surface Elements have properties of density and thickness and are represented by an AutoCAD entity called a 3d Face in their simplest view Complex Elements are currently represented only by the ability to change elements to Double Tees and edit special values associated with them through a special dialog box An OFFSET is a value that may be added or subtracted from the coordinate location of a member or element to change its length or position in space Joints never move once placed they remain fixed in their location The actual end of the member or corner of an element however can be moved with relation to the joint that supports it A BETA ANGLE is a measurement of the rotation of a member around its axis In the case of a wide flange for example a zero Beta Angle on a vertical column will align the web with the X axis Any horizontal or sloped member will have the web aligned with the vertical axis Structural Desktop will reflect changes in the Beta Angle by rotating a member around its own axis and Beta Angles of 0 degrees and all multiples of 90 degrees will draw properly in
125. isting offset Example Both ends of a member are already offset six inches positive in the Z axis You decide that four inches would be the correct offset to place the member where it should be in the model to reflect reality You could Offset both ends using a Relative offset of Minus 2 inches 2 0 in the Z axis The offset is added to the existing 6 inch offset resulting in a 4 inch offset e Offset both ends using an Absolute offset of four inches 4 0 in the Z axis The offset replaces the 6 inch offset with a 4 inch offset 53 Exit from the dialog box and just move the member up two inches in AutoCAD The next time you look at the dialog box the offsets will have changed to reflect your action All of the above actions will accomplish the same results 54 Zero Added in Version 1 95 the Zero Button on the dialog box will zero all offsets for every member currently selected When you click on APPLY the members will be returned to the end coordinates determined by the joint locations associated with the member This is a very powerful and quick operation and is a good reason to save your work frequently in a hold file Member Type Displays the member type of Member Type the objects that have been selected If you select Beta Prismatic another Member Number in the Member Num ematie STIR Prismatic Rectangl box Member Type will change if needed to Density E display the type of the
126. itional information about the geometry of the simulated Joist to assist in more detailed drawings as output The Joist Parameter dialog box permits viewing and changing data specific to these members 94 Elements Only Commands SDFTE Face To Element In order to create a new element from scratch you must first create a 3dFace object on Layer 0 These objects are either triangles or four points describing a planar four sided polygon The points describing these objects are in a sequence and the order of that sequence will determine the direction in which the thickness of the element will be expressed from the face A RIGHT HAND RULE applies in that a counter clockwise enumeration of these points in the order they are created curling in the direction of the fingers of the right hand will generate a direction determined by the thumb as being UP If the order is not around the outside edges of the 3dFace but has edges that cross referred to as a Bow Tie due to the distinctive appearance the ELEMENT created from this face will not be predictable For viewing purposes the user created element is generated with a thickness of one inch until the user edits the object Since Version 1 6 will also change any lines on layer zero that are not already members into members SDCELM Change ELeMent parameters Displays a dialog box for editing parameters of the ELEMENT objects to include thickness offsets density and extrusion direction You
127. ive bay structures in AutoCAD but can be used several times in succession to create more complex building outlines 3 Tenge Race ta Element 6 Blementta Double Tee ange Element Parameters Gy q Henge Peremeters The function is accessed from the right click menu The Structure Line Generator command is shown Top of Member highlighted at the right in Figure 2 15 Grid Lines Display Text Data This function is designed to be used in any Delete Member Element AutoCAD drawing The line generator may be used Create 2D Drawings 7 in any AutoCAD session or in a Structural Create 3D Drawings Desktop Model drawing and it may be used to add structural members to an existing model as many times as you wish Greate 210 Structure Line Generator File When you select this function the dialog box shown Preferences in Figure 2 16 below will appear About Structural Desktop Documentation gt Figure 2 15 Line Modeler Start Point r Building Specifications Total Length 5E Number of X Bays D Y NEN Number of Y Bays 0 oot Z b Number of Stories 0 E Floor Roof Secondaries None Aligned with Aligned with Y Number per Bay Draw Cancel The Start Point button does not have to be used unless you wish to begin at a point you select
128. ktop to create complex models with thousands of members and elements complete with offsets fusing and AutoCAD layering layouts but this information was lost going from SDT to analytical and then reading the modified analytical file back to SDT This command recovers the relevant data from a user selected hold file written prior to the creation of the analytical file and automatically creates and assigns layers fusing and other SDT file information while NOT making any changes to new erased or changed members General Improvements Improved Stability Version 3 0 of Structural Desktop uses a new security system to limit unauthorized copies This system is compatible with all current versions of the Windows Operating System from Microsoft Other changes have been made to Structural Desktop to continue to support all versions of AutoCAD to include AutoCAD 2000 AutoCAD 2000i AutoCAD 2002 AutoCAD 2004 AutoCAD 2005 and AutoCAD 2006 This also includes support for Architectural Desktop Version 3 3 Architectural Desktop 2004 Architectural Desktop 2005 and Architectural Desktop 2006 Structural Desktop continues to read and write HOLD files consistently between all versions of Structural Desktop that have been offered to the public from Version 1 5 to the present This includes all versions of Structural Desktop LT and all variations of Structural Desktop version 3 0 You can continue to share information in the HOLD file format between users
129. l Desktop menu item on your computer refer to the Structural Desktop Installation and Getting Started document The program is optimized to run through this menu but the Command Line commands to access Structural Desktop functionality are listed in Appendix A The Structural Desktop Coordinate System Structural Desktop uses the World Coordinate System from AutoCAD Many analytical programs use a coordinate system where the Y axis is vertical and in plan view the Z axis is positive toward the bottom of your monitor screen and the X axis is positive toward the right A plan view of the Structural Desktop model looks the same as a plan view in your analytical model To maintain this orientation from your analytical file Structural Desktop automatically changes the coordinates to the World Coordinate System at the time the files are transferred from the analysis program The X axis is unchanged the Z axis is now the elevation axis and the former Z axis from your analytical file will have the same numeric value conserving your coordinate system but will be opposite in sign A member in an analytical file between the joint coordinates 100 120 240 and 344 5 120 240 is 20 4 1 2 in length and at an elevation of 10 0 Figure 1 2 at right shows the member in analytical coordinates at the bottom and in AutoCAD s coordinate system at the top Structural Desktop coordinates of the member will be from 100 240 120
130. l select that member A little experimentation makes the meaning of this clear to users who are advanced enough in AutoCAD use to need this information A remedy for this is to perform WINDOW selections using the centroid face viewing option and reserve envelope viewing for those occasions that you need the extra information or orientation that envelopes provide Envelopes are quick and useful but Centroid Faces are even quicker to update when you are doing a large number of changes The Meshes option is not active at this time and is grayed out This option will permit a display using AutoCAD meshes to represent the outlines of objects and is aimed at users with high end rendering requirements The Solid Objects option turns on and off the generation of AutoCAD 3d solid objects This option will display the best view that Structural Desktop can create with that object While displaying solids you can shade and hide to view the respective locations of members and elements something that you cannot do as well with envelopes In the event of a complex object such as a joist girder all of the aspects of that object will display and can be viewed with an eye to how the final 2d drawing of that object will appear This option requires the most computer power and many Structural Desktop functions will automatically turn the 3d Solid Objects mode into Envelope mode for you before you are allowed to select members Selecting any part of an Envelop
131. ll display as small circles the Members will display as Lines and the Elements will display as 3d Faces on layers created for you by the program Diaphrams Solids and indicators of Supports and members that have been Released will also be displayed RISA 3D File Creation Structural Desktop can create a RISA 3D data file from the model at any time For this to be effective you must have a Structural Desktop Model open in AutoCAD that was created by reading an analytical file by Opening a Structural Desktop Document and changing Lines or Faces to Members or Elements or by reading a HOLD file This will not be effective if you have simply read a Drawing file DWG and not performed transformation options AutoCAD drawing files do not contain joint coordinates member incidences element incidences member properties element thicknesses and constant values The Structural Desktop model contains this information when the proper sequence has been performed If this is confusing please read the Tutorial which will lead you through a session that should demonstrate this process in more detail If members are FUSED in your Structural Desktop Model the fused members will be ignored but the sub members that they are composed of will be written to the RISA 3D data file with the current Member Properties Constants and Beta Angles 27 Once you have created members or elements in a Structural Desktop session the option to Create RISA 3D file
132. ly you can view the Component Tables from the main Structural Desktop Menu under the Display Text Data Display Tables item This can be useful to run a quick check on a dimension without recourse to the Steel Manual Structural Desktop has a built in Undo function See Figure 2 2 Due to the separation of the AutoCAD drawing and the actual Structural Desktop database elements use of the regular AutoCAD undo function can have unpredictable consequences Until this is rectified a special undo function has been created that is linked to changes within Change Member Parameters and Change Element Parameters Whenever invoked this function will undo the changes done that pertain to the most recent use of Change Member Parameters and Change Element Parameters The Intersect Break Command Structural Desktop version 1 7 introduced a new command for users who are creating geometry for analytical programs The Intersect Break command is located on the Right Click Menu under the Fuse and Defuse Members commands When you select this command you are prompted to select members Members selected will be checked against every other member selected for intersections If the members intersect without endpoints at the intersection the members that cross will be broken 57 Figure 4 11 In the example shown in Figure 4 11 above the members at the left were
133. m from a cone These members can be End Depth 2 0000 selected from Wood Steel or Concrete materials and are specified by the Start and End Depth as shown in Figure B 8 The members can be used in conjunction with cylindrical prisms to draw bell bearing piers by themselves or in any place Cancel where a frustum of a conical section is required The Figure section will be drawn in 3D models plans and elevations and will be included in calculations for weight and volume of steel wood or concrete in the Material Report Since there is no corresponding section this member will be written to analytical files without a section being assigned Steel T Sections T sections names in STAAD are derived from the W or other section they are cut from but in GT STRUDL the name is that from the Steel Manual Structural Desktop converts T names to the Steel Manual convention T sections are defined by depth width thickness of flange and thickness of web Representations are exact in these dimensions but do not include fillets at corners The centroid of members with these shapes pass exactly through the center of the web as measured in both of the member axis and as shown in Figure B 9 9 101 Angles amp Reverse Angles Angles and Reverse Angles are handled separately in Structural Desktop to permit alignment of angles with unequal legs to display properly due to the handedness of such m
134. m of the double tee legs can be made shorter or longer than the edges of the element by changing this value The legs will take their position from the edge directly over the center of the leg even if the edge is sloping or not square with the sides of the double tee Leg Rotation In the event that the double tee legs are horizontal or in a roof double tee simply run the wrong way this enables you to rotate the legs 90 degrees Leg Extrusion This enables the user to cause the legs to be on either face of the element If you have created an element and it is where it should be when the envelope mode is on but the legs are inside when they should be outside this will reverse the legs without making any other changes to the position of the double tee 73 CHAPTER 8 Creating Grid Lines and a Material Report The objective of this chapter is to help you use the following functions e Create Grid Lines e Modify Grid Lines e Create Material Report Create Grid Lines In Structural Desktop you can create a grid line that is tied to a node from your analytical file or to any other point within the model Each relevant grid line draws itself in every drawing extracted from the model and dimensions are provided automatically across the grid lines and between them Our program permits engineers to place grid lines where they want them and the associated dimensions are generated on all 2D drawings automatically On the menu select Add
135. m to read write STAAD Pro Files The dialog will appear as Select a STAAD Pro File shown in Figure 2 9 at right Note that this dialog has a label that displays Creating a STAAD Pro file whereas the same dialog states Reading a STAAD Pro file in Figure 2 5 Cancel Figure 2 9 Clicking on the button marked Select a STAAD Pro File will invoke a standard windows file dialog as shown in Figure 2 10 at left and typing in AnewFile shown will result in the dialog in Figure 2 10 at right il E UT SDT Choose STAAD Pro File to Create _ 2 52501 STAAD Pro Interface x Save in C3 STAAD 7 a m Creating a STAAD Pro file DADebug Crosstests Parameters S TAAD ANewFile std Select a STAAD Pro File File Tile Ready to write file File name ANewFile Save Save as type STAAD Files std Cancel Process Cancel Figure 2 10 The dialog at right displays the path and filename selected You may change this before creating your file if you wish When you click the Process button your file will be created and displayed in an editor 17 Structural Desktop User Provided Tables Structural Desktop provides support for a series of User Provided Tables that come with the program The files are located in C Program Files Structural Desktop STAAD User Files This is an example of a part of a file created using the Structural Desktop tables Example
136. mand will perform as the move command if you do elect to delete the original member offsetting the member from its original position 86 Summary of Use of AutoCAD Commands Changing the layer of a Centroid Line or 3D Face will place the member or element and all manifestations of it on that layer Stretch Trim and Move used with Structural Desktop work correctly when used on centroid lines or faces that represent elements Trim will not trim 3D Faces in AutoCAD When Move All is selected from the Other Options menu item you can move or rotate part or all of a structural model and the Joints will move and update accordingly Care must be taken to actually select all of the Joints or Members Elements that you wish to move Using the Stretch Command and completely selecting the circles representing the Joints will permit you to slide an entire wall of a bay with one action Rotate Copy and Mirror have limited direct use within the Structural Desktop session and are more useful applied to lines or faces Work with your lines and faces to create the stick form of your model then they can be used to create members and elements Array works only with lines or faces to be later turned into members or elements If you have any question about a function save a hold file before you try it This will prevent the loss of data in the event that the function causes AutoCAD to malfunction 87 88
137. may make whatever changes you wish to the drawing template adding layers or linetypes or changing dimensional styles or grid information but do not remove the structural members from the template or initial drawing that you intend to use Further automated drawing does not work well when the OSNAP functions have been set so Structural Desktop starts each script file with a command to nullify the SNAP functions Once you have imported the members purged unused styles and saved your drawing under the name that you have chosen you are solely in an Architectural Desktop session For questions about Structural Desktop please see your users guide or contact our technical assistance group For questions relating to Architectural Desktop functions and objects please use the avenues provided with that program by AutoDesk If you are unsure as to whether a problem with structural members relates to Structural Desktop or Architectural Desktop please DO NOT HESITATE to call Structural Desktop Inc first 138 Appendix H Notes for International Users Structural Desktop Version 1 95 has been designed specifically with the purpose of introducing this program to engineers in countries other than the United States This utility is designed to read and write STAAD Pro and GT STRUDL files Information read in one program may be written to the other with the following limitations gt A file generated and usable in one analytical program can create an
138. members or elements These members remain stored in the Structural Desktop database but are not in AutoCAD while they are not visible Judicious use of Viewing commands can speed up your session significantly The Viewing commands are available from the Shortcut Menu as shown in Figure 3 4 below Structural Desktop Display Options Viewing View by Selection Cut 3 Fuse Members 2 Copy with Base Point Defuse Lei d Hide by Selection Paste Paste as Block Change Line to Member View All i dico HN Change Member Parameters Paste ta Orginal Coordinates i Change Joist Parameters aor Change Face to Element Change Elementto Double Tee Ba Change Element Parameters ae Change Double Tee Parameters Quick Palette Top of Member Find Grid inne Figure 3 4 44 The Viewing commands will invoke a Structural Desktop Regeneration when they are used This complete flush of the AutoCAD database contributes to the speed with which you can then manipulate the objects The View by Selection command asks you to use the AutoCAD selection process You will see the instruction Select objects on the Command Line You can use any of the AutoCAD options for selection at this time If these are unfamiliar to you please use the AutoCAD help or review the material in the AutoCAD manual Once you have made your selection the program performs a Structural Desktop Regeneration and pre
139. ment and changing Lines or Faces to Members or Elements or by reading a HOLD file This will not be effective if you have simply read a Drawing file DWG and not performed transformation options AutoCAD drawing files do not contain joint coordinates member incidences element incidences member properties element thicknesses and constant values The Structural Desktop model contains this information when the proper sequence has been performed If this is confusing please read the Tutorial which will lead you through a session that should demonstrate this process in more detail If members are FUSED in your Structural Desktop Model the fused members will be ignored but the sub members that they are composed of will be written to the STAAD file with the current Member Properties Constants and Beta Angles When you have created a model either by reading a file or by Open a Structural Desktop Document the file menu will activate the function to Create STAAD Input File as shown in Figure 2 8 Load Structural Desktop Hold File Preferences Save Structural Desktop Hold File Open Structural Desktop Document STAAD Interface Load STAAD Input Flle GT STRUDL Interface Create STAAD Input File RISA Interface CSI Interface Load Autosave Backup Hold File Recover Hold File Data Clicking the Create STAAD Input File menu Xl option will again invoke the separate Structural Creating a STAAD Pro file Desktop satellite progra
140. mple the secondary members are drawn horizontal aligned with or parallel to the X axis as was checked in the dialog box As further shown in the example an entry of 2 in the Number Per Bay edit box for secondaries will actually place two secondaries and divide a bay into 3 equal divisions As soon as you have created the structure you can add additional bays with different characteristics by running the function again and again and setting the start point to the appropriate part of the existing model You can rotate copy stretch erase and modify the basic structures produced to fit your needs If you require secondary members at the lowest elevation level of the model you can copy them from the floor above any members or groups of members you do not need can be simply deleted while they are in AutoCAD line form and have no consequences on your analytical model or numbering schemes To give you the greatest amount of freedom in placing members the secondaries created do not divide the primary members they intersect Using the Structural Desktop command Intersect Break once the lines have been turned into members sets the intersection points between the secondaries and primaries in analytical files created from the model This permits you to move change or erase a single secondary member or groups of secondaries and have the joints nodes precisely at the intersection point for the generation of an accurate analytical model Because the lin
141. n a Structural Desktop Document the file menu will activate the function to Create GT STRUDL Input File as shown in Figure 2 16 Load Structural Desktop Hold File Preferences Save Structural Desktop Hold File Open Structural Desktop Document About Structural Desktop STAAD Interface Documentation GT STRUDL Interface Load STRUBL Input File RISA Interface Create GT STRUDL Input Flle CSI Interface Load Autosave Backup Hold File Recover Hold File Data Figure 2 16 x When you select this function you will Creating a GT STRUDL file invoke the GT STRUDL read write program that is included with your installation of Select GT STRUDL File Structural Desktop The dialog will appear UR as shown in Figure 2 17 at right Note that this dialog has a label that displays Comment Creating a GT STRUDL file whereas the same dialog states Reading a GT STRUDL Cancel file in Figure 2 14 Figure 2 17 Clicking on the button marked Select GT STRUDL File will invoke a standard windows file dialog as shown in Figure 2 18 at left and typing in AnotherNewFile shown will result in the dialog in Figure 2 18 at right Choose a GT STRUDL File to Create B 2 GT STRUDL INTERFACE X in x GTStrudl et Ey eH Creating a GT STRUDL file 2 Dale gti ParametersNew2 gti 9 Dale 1 9ti 2 ParametersOut gti D Debug Crosstes
142. n any other used in the model The same holds true for any new member or element you create The Joint Numbers Option displays numbers identifying each joint The Member Numbers Option displays numbers identifying each member The Element Numbers Option displays numbers identifying each element Grid Display When you create grid lines in Structural Desktop they display on a layer of their own SD Gridlines For some views that you may wish to take of your model a simple horizontal gridline is sufficient When you create gridlines the Horizontal Grid option is checked for you automatically This displays the gridlines running horizontally and parallel to either the AutoCAD X or Y axis with the letters or numbers labeling the gridlines displayed at the appropriate ends of the gridline For some views you may wish to see the gridlines on your model as a vertical line projected behind the model For this option you would select Vertical Grid Once you have created the grid lines you can banish them at will by checking these boxes off Gridlines will always appear on 2d output drawings regardless of how these boxes are checked They will appear in the output drawings on the SD Gridlines layer and can be deleted or isolated and edited easily Creating and editing gridlines is covered in Chapter 8 41 Design Display Inactive The Design Display options are inactive in this version of the software A future version is currently be
143. n you load the input file you must specify the data file StructDT ds which is provided on your hard drive in the directory C Program Files Structural Desktop GT STRUDL User Files SDCTCSI CreaTe CSI SAP 2000 file Creates a CSI SAP 2000 file from the current database This file contains joint coordinates member incidences element incidences member properties element thicknesses and constant values Members created in Structural Desktop that rely on the USER PROVIDED TABLES are not supported in SAP 2000 SDABOUTSD ABOUT Structural Desktop Version Information Internet Link to Structural Desktop Web Site for updates information and technical support Phone and fax numbers for Structural Desktop Inc as well as physical address are provided The Security Code that you must have to perform the Unlock Code request when you first install Structural Desktop is available at any time on this dialog box 91 View Oriented Commands This block of commands permits you to isolate members or elements into groups quickly Rather than relying on Layering you may select members or elements to view or hide temporarily regardless of what layer they are on and continue to remove members from view until you see only what you wish to see the way you wish to see it SDVCOM View COMponents Displays the COMPONENT TABLES of all MEMBERS for which Structural Desktop contains data Quick access to Steel Tables and other data SDVDB View DataBase
144. nd elements from analytical lengths to true cut lengths you may wish to activate the Material Report function This function will create a complete Material Report file and open a window over your AutoCAD session of the notepad editor to let you see the file s contents The first part of the file at the top is intended to be a brief report of the status of members called a Preliminary Identification Report It details how many of each type and such members or elements that may be missing data and can be accessed as often as you wish An example of this part of the report follows on the next page 75 PRELIMINARY IDENTIFICATION REPORT 3 of the Rectangular Prism type Totallength 15 0 3 of the Cylindrical Prism type Totallength 15 0 3 of the Wide Flange type Totallength 15 0 3 of the Angle type Totallength 15 0 6 of the Channel type Total length 30 0 3 of the Tube type Total length 15 0 3 of the Double Angle type Total length 15 0 3 of the Reverse Angle type Total length 15 0 6 of the Pipe type Total length 30 0 3 of the Double Angle Short type Totallength 15 0 3 of the Steel Tee type Total length 15 0 3 of the Cee Section type Total length 15 0 3 of the Zee Section type Total length 15 0 8 Valid Elements found Total Volume 72 917 cubic ft Total Weight 16603 604 pounds As you can see this is a rough report You may edit it or discard it when you prepare a final Material Repo
145. ned structure you must be able to e Change Element to Double Tee e Change Double Tee Parameters Change Element to Double Tee The Shortcut Menu item Change Element to Double Tee will trigger the Select Objects prompt For this command you wish to select Structural Desktop elements that should display and plot as double tees Do not select 3D Faces that are NOT elements to change into Double Tees To change 3D Faces to Double Tees is a two step process Change Faces to Elements Change Elements to Double Tees When you have completed the command the elements will display two additional 3D Faces as a part of the Centroid Faces display in order to identify them as elements that represent double tees The legs will display in envelope or solid mode Figure 7 1 and will be drawn on plans and elevations Element Double Tee as Faces Double Tee as Envelopes Figure 7 1 71 Change Double Tee Parameters Just as the Change Joist Parameters dialog box lets you deal with the extra internal structure of a joist the Change Double Tee Parameters dialog box Figure 7 2 enables you to adjust the parameters of the Double Tee _ Change Double Tee Parameters 21x m Leg Offset Element Num Top 6 Depth ofLeg 36 Bottom fe Edge Offset Thickness Leg Rotation Default Rotate 90 C 8 DT 10 DT c Extrusion 2 BE C With Element One Leg Opposite Thicknes
146. nes the distance of your plane FROM the X axis so the Y axis controls the plane and you would check that If you wish to select members that are not precisely in line but only close to the plane the Select Envelope Width box permits you to enter a value for the amount of forgiveness you want if you enter 12 then any member or element that satisfies the criteria within a foot will be selected and remain visible The rigor of selection is determined by the three check boxes at the bottom of the dialog box If you want to select only the members and elements that have all points in the plane the top selection Completely Within Envelope should be checked with a value of zero for the envelope Checking the next box At Least 1 Joint Within Envelope will select and make visible MORE members and elements The last selection Passes through Envelope will select any member or element that is in or passes through the space that is described this is the most numerous selection set of the three As an example if you have a building where all the members on the roof are at an elevation of 184 inches and one wall is parallel to the X axis at the Y coordinate of 240 inches we can consider the consequences of different selection criteria once the point 0 240 184 has been selected If you select Z controlling zero envelope and completely within envelope then you will get the roof framing plan only Selecting At least one joint will show the columns
147. ng broken into their sub components and any changes to the fused member being propagated to the sub members Selecting Physical members will write a GT STRUDL file that contains the fused members in preference over the sub members and all other regular members that are neither fused nor part of a fused member Offsets in Structural Desktop are now propagated to the GT STRUDL input file as ECCENTRICITIES This preserves the offsets for analytical purposes for re importation into Structural Desktop and for use with the Physical member option outlined above in creating CIS 2 files with true length members for export to other programs through the GT STRUDL CIS 2 export function RISA 3D and RISA Floor Interface Improvements 130 Structural Desktop Version 2 0 is now configured to read RISA 3D files for versions through RISA 3D Version 5 05 current as of August 1 2004 Structural Desktop Version 2 0 includes an option under the RISA Interface menu item for reading of RISA Floor files Each layer of the RISA Floor file is imported at the elevation specified in the file for that layer Version 3 0 Compiled August 2005 General Improvements A New Command Structural Desktop Version 3 0 incorporated the new Recover Data from Hold File command in order to retrieve information lost when a file was written to an analytical model and changed then read into Structural Desktop from the modified analytical files Users were using Structural Des
148. nges to Complex Members These members have an internal structure and can be parametrically modified through this dialog box _ Joist Parameters Member Num Depth Type Spaces 70 63210 fe Ee Chord Dimension Start Extensions End Extensions Start Ext 0 0000 fo Top o Top End Ext 0 0000 Bot Start Ext 9 0000 4 Bott 4 uL Set Defeults Start Extensions End Extensions roy Figure 5 1 The dialog box breaks down into fairly simple components With explanations these are Member Num As in the Change Member Parameters dialog box this is a drop down box that will display all the members in a current selection set The other text boxes on the dialog box will display the information about the currently viewed number Changing the number in the Member Num box can change the display 63 Depth and Type These boxes display the physical depth and the Member Name of the object indicated by the number in the Member Num box As these values are not directly edited by the user they are a dark gray in color to distinguish them To change the TYPE of member and thus through that mechanism its depth you must user the Change Member Parameters box A breakdown of the meanings of the Type Name can be found in the Appendix Spaces When you model a Joist Girder using the members provided in the User Files you have the option of also modeling the secondary members that frame into them such
149. nly identical lengths are grouped in the first report The material report is saved in a file called MatRep TXT before you ever see it From our editing program SDEdit exe you may save it as any text file name you wish for later import into the Word Processor of your choice Notepad Word WordPerfect etc At that time you may delete or retain whatever part of the Material Report you deem useful It is useful to note that the display of the data in the Material Report looks quite different when viewed using different font styles A non proportionally spaced font such as FIXEDSYS will display the columns in a more readable alignment FIXEDSYS is available on most platforms and the SDEdit program that is linked to Structural Desktop will permit change of font specifically for this reason You should also note that text files such as this material report can be accessed through spreadsheet programs 77 CHAPTER 9 Creating Drawings The objective of this chapter is to help you use the following functions e Create 2D Drawings Create Plan View Create Elevation X Z Q Create Elevation Y Z e Create 3d Drawings Create 2D Drawings The Create 2D Drawings menu item in Structural Desktop will display three choices as shown in Figure 9 1 The three choices can be thought of as coming from the basis of elementary drafting Delete Member Element Create 2D Drawings Create Plan View Create 3D Drawings Create Elevation
150. nt drawings that you create from the model are AutoCAD drawings and they must be saved in Drawing files using the SAVE or SAVE AS command from the AutoCAD menu In addition to the files that Structural Desktop uses that we have discussed you should also be aware that Structural Desktop also has some data files on your hard drive These files must be loaded into the directory Structural Desktop in a non network installation and consist of data files in the Structural Desktop folder under Program Files on your C drive If you ever wish to remove Structural Desktop from a system this can be accomplished by using the un install function or by deleting the entire Structural Desktop directory under the Program Files folder on your C drive Please note however that each installation of Structural Desktop requires a new authentication code from Structural Desktop Inc CHAPTER 2 Model Creation The objective of this chapter is to help you understand the following concepts How to load an analytical design file into Structural Desktop How to create an analytical file from a Model How to create a Model with AutoCAD without an analytical file How to save your work and return to it at another time Loading an Analytical File Before you attempt to load an analytical file refer to Figure 2 1 below Repeat HELP Structural Desktop Cut Copy Copy with Base Point Paste Paste as Black Paste to Orginal Coordinates
151. nu click About The dialog box that displays should reference Version 4 5b or later If this is not the case go to the RISA website at http www risatech com and download the latest patch This patch was uploaded by RISA Technologies on 2 11 2002 Structural Desktop is very grateful to the team at RISA Technologies Due to their hard work if the Structural Desktop file is in your RISA directory RISA will access those objects as arbitrary objects through the shape database under the group SDT Refer to RISA documentation and help files for further information on the use of this table and the shapes database and to Appendix B for information about the members available under each type 125 The file contains the following types of members Name Contents Example Joist Girders SD JG3218 LongSpan Joists SD LH2412 ShortSpan Joists SD 1210 LGSI SD Z12X3512 Concrete L s and T s SD T24IT48 Note that each member has the prefix SD_ when selected from the dialog box in the RISA 3D program This will be stripped from the member name when your RISA file is read by Structural Desktop The file does not contain the AISI members CS CU ZS ZU and HU because these members were already available from the RISA shape database You may use these members in your RISA file and they will import into Structural Desktop Finally you should check your numbering scheme before attempting to read a RISA file into Structural Desktop
152. nuals For the purpose of this manual any command that changes the layer of a centroid line in a Structural Desktop model will reach into the database and effect a permanent change of the member the line represents This change will be retained from one Structural Desktop session to another through the vehicle of the Hold file The AutoCAD Stretch and Trim Commands Members and Elements The Stretch Command in AutoCAD permits you to encircle one end of a line with a bounding box and drag that end to a new location For the sake of precision you can stretch using numeric input or by using snap points within your drawing to locate the start and end relative locations of the stretch The Trim Command uses the crossing of another entity to indicate a point at which the Member should be truncated Using the stretch or trim command with Structural Desktop will cause the member or element to update the offsets related to it and will cause the member to change to match the stretched centroid Stretching anything other than the centroid of a member or the 3d Face of an element will NOT cause a permanent change unless the centroid or face is also stretched 3D Faces cannot be trimmed If you perform a stretch or trim command and the member or element looks questionable you may force Structural Desktop to perform a full update at any time by clicking on the Display Options menu item and clicking OK on the Display Options dialog box The effects of usin
153. o be incorporated into a final drawing If you proceed in that fashion then later changes to the model can be propagated to a new plan drawing and that new plan drawing can replace the former in the final document the next time it is opened For further discussion on this subject refer to the AutoCAD manual and the excellent texts that are available for improved efficiency with AutoCAD Additionally use of paperspace to isolate sections from the drawing at more detailed scale factors will enable you to create details that are in fact part of the overall plan and drawn from members that are accurately sized You do have to complete the details by hand but the relationships of the members are correctly drawn for you One advantage you will find that you have using Structural Desktop is that the coordinate system is preserved from the analytical model to the Structural Desktop Model to the final drawing with just a little forethought on your part 79 Create 2D Drawings Create Elevation X Z When you click on the Create Elevation X Z menu item in the Structural Desktop Shortcut Menu you are prompted to Select Objects at the command line Create Elevation X Z will draw all or any part of your model with a Z value of zero and in a flat representation of each of the members When you have indicated to AutoCAD that you are through with the selection process the program will create a new drawing window in AutoCAD The program draws each memb
154. o the breaking 58 Top of Member In the Structural Desktop Shortcut Menu there is a Top of Member menu item This item contains two options Top of Member Flat Top of Member Slope The purpose of these two menu items is to perform the adjustment of the relative elevation of beams within a floor or roof so that all of the members have the same elevation for the top of the member relative to either a flat or sloped plane When you create your model all of the members are represented by centroid lines that have no depth or thickness Simply turning these lines into members will not place the members exactly where they should be in terms of elevation so offsets must be applied This function will perform the beam Z axis offsets necessary to bring the tops of the selected members into a common elevation Top of Member Flat Top of Member Flat is a modifying command that manipulates offsets for a selected set of members No matter what the depth of the member the program already has this information in the database By selecting this command and a group of members you are given the dialog box below in Figure 4 12 4 Top of Member Flat New Elevation 1485 5 1 Figure 4 12 Before using this command check the model or your notes to determine what the Top of Member should be for the part of the structure you are rectifying If you are preparing to modify a significant number of members save your work in a hol
155. of an analysis file BEFORE creating any solid models the final size of the solid model is minimized as compared to UNIONING small solids in AutoCAD to create a single solid object Output drawings will reflect the unified member status only SDDEFUSE DEFUSE Reverses the SDFUSE command even in a later Structural Desktop work session A FUSED MEMBER is thereby deleted and the original members with their original data and offsets are returned to you SDLTM Line To Member This function permits you to select any number of regular AutoCAD LINES and will change them into a neutral MEMBER entity The lines selected must be on AutoCAD Layer 0 any lines on other layers or any other entities including existing MEMBERS or ELEMENTS will be ignored by this command If the START or END of the line is within an inch of an existing JOINT the MEMBER created will reference that joint otherwise a new JOINT is created As of Version 1 6 also changes selected faces into elements SDCMEM Change MEMber parameters Displays a dialog box for editing parameters of the MEMBER objects In this box you may adjust offsets change the length of the member change the type density or beta angle of the MEMBER and apply a description to be added to the MEMBER output drawings SDUNDO UNDO Reverses last changes made with Change Member Parameters by one step backwards SDJP Joist Parameters The joist type of members is a special case They include add
156. of the member will do so using the START END or J K nomenclature The Member Names option will permit you to see the DESCRIPTION associated with the member It identifies the member type W18x35 TS8x8x1 2 when the member is first read from an input file You have the option of changing this name to ANY text string you want which will be covered in the Change Member Parameters section of Chapter 4 on Modifying Members Show Toolbar The Show Toolbar option will create the toolbar shown to the left of the dialog box in Figure 3 2 that has an icon of an envelope on it This Toolbar can be placed anywhere on your screen and will toggle your envelopes on and off without having to return to the display dialog box This button toolbar is the first button toolbar to be created for the program and was chosen by our beta testers as the single most used function Turning the envelopes on and off can assist greatly in visualizing complex models so this button is designed to permit this action with a single mouse click Detail Display The Detail Display options are designed to let you control the level of detail about a member or element that shows on the graphic screen at any given time Higher levels of detail are not always desirable If for example you wish to enter a totally new member it is easier to see where you are putting it if the Centroid lines are all that are currently being displayed The more complicated the display the more power
157. oints and properties as the member copied This can be convenient for quick operations that are solely concerned with creating a drawing but can be confusing if you are tracking member and joint numbers or intend to export the model to an analysis program Using the Copy Command in AutoCAD to produce multiple copies of a single member is also unproductive The SDT database is only signaled to produce a new member at the final position of the multiple copy command There is no limit however to how many lines you can create using the multiple copy command and then turn these lines into members afterwards For large changes and or numbers of new members or elements we suggest that you create lines and copy or array these lines BEFORE they are transformed into Structural Desktop members or create Faces and copy or array them BEFORE changing them to elements Due to the nature of the array command it will not update the database properly An attempt to array a member will only succeed in creating the last member in the array specified You may however array as many lines that you intend to represent members as you wish and then change them to members using the SDT command For information purposes the mirror command will behave as the copy command if you do NOT elect to erase originals It will create a new member that is the mirror image of the original but with the same joints and offset from those joints to the new position The mirror com
158. op It is useful in working with the model for you to create new layers for the members and elements in Structural Desktop These layers will permit you to turn on and off different groups of members thus making the model easier to work with The layers you choose and implement will be saved in your HOLD file whenever you wish to interrupt your work for a while and will be replicated precisely by name in every drawing extracted from the model through the Structural Desktop process Creating New Layers AutoCAD provides a number of toolbars of which Structural Desktop takes advantage Figure 10 1 below shows the Object Properties toolbar which deals with Layer information Two controls we can use to manipulate layers are the Layer Button and the Layer Control Drop Down List 4 AutoCAD 2000 NOT FOR RESALE Structural Desktop Model dwg File Edit View Express Insert Format Tools Draw Dimension 494 es8 ouUumnz 7orrzjnusu i 9 ca en D 5 ByLayer ByLayer af 40 150_ 0105 E Q Ga 8 ISD_ PLAY Q Ga GB 150 FACES Layer Button Q da GB ISD LINES JOINTS Layer Control i Drop Down List Figure 10 1 82 If you do not have the Object Properties toolbar active in your Structural Desktop session you should consider adding this toolbar The AutoCAD Layer Property Manager dialog box is shown in Figure 10 2 below This is accessed by clicking on the Layer Button typing Layer or LA at the
159. or any and all groups of members as soon as the file has been read into the RISA 3D program A future version of Structural Desktop is planned to permit variations in defining wood members to match the diversity of the RISA 3D program Structural Desktop will not save loading and design information from the RISA 3D file format nor will RISA 3D retain layer and other AutoCAD related information from a Structural Desktop Model Providing this full round turn capability is a high priority with the Structural Desktop design team but in the interim care must be taken to update changes in both models in order to maintain current information on your structure 29 Load CSI SAP 2000 Input File If you do not use SAP 2000 from Computers amp Structures Inc you may skip this section Structural Desktop uses an input file for SAP 2000 from Computers amp Structures Inc as a starting point for model creation The file format used ends in the three letter extension S2K These files are generated from SAP 2000 through the Export function on the SAP 2000 menu Please note that files manually generated through this format for SAP 2000 such as some of the examples that come with SAP 2000 or generated by other programs may use a shorthand version of the input format including macro like statements that expand to represent multiple nodes or elements Structural Desktop will read these files if they are first IMPORTED into SAP 2000 and then EXPORTE
160. package that can utilize a 2D AutoCAD drawing file or DXF file Structural Desktop has a function that performs an automatic backup of your model every five minutes This backup is saved on your hard drive in the directory C Program Files Structural Desktop Backup If you wish to load this file you may do so by clicking on Load Autosave Backup Hold File as the first action you take after running the program Once you have loaded another file waiting for any length of time will cause Structural Desktop to overwrite the existing backup with a backup of the open document We can not assure you that the Autosave function will always do exactly what you want it to do but it is the second best method of recovering data in the event of a loss or error The best method is to save your work frequently and under a number of names that represent incremental progress of your model and make backups of these files periodically to other media 36 CHAPTER 3 Display Viewing and Selection The objective of this chapter is to help you understand the following concepts How to use the Display Option dialog box The function of each option in the dialog box Select members and elements using selection sets Use Viewing options to view parts of a model Use Layers to selectively view and group members and elements Display input data and all member element modifications The Display Option Dialog Box Once a data file or hold file has been loaded or
161. primary method for working with Structural Desktop LT When there is no data file from an analysis program available Structural Desktop will allow a user to create a model in AutoCAD This model can be used to create an input file for analytical design software using Structural Desktop or you can proceed directly to the output drawings with either Structural Desktop or Structural Desktop LT Structural Desktop creates input files for analytical programs that describe the geometry and basic properties of members and elements Structural Desktop creates the joint numbers and coordinates member incidences and element incidences Structural Desktop will create the geometry for an analytical model without a pre existing analytical model You may then export the input file for analysis and design and return the result to Structural Desktop Alternately you can create a model and create your drawings completely within Structural Desktop On the Structural Desktop menu under File the last menu selection is Open Structural Desktop Document See Figure 2 3 This selection will set all the necessary layers and create a Structural Desktop Model environment This environment enables you to create a structural model with access to the full library of sections Any method that will place LINES and 3D FACES within AutoCAD is valid to create a Structural Desktop Model DXF files from any version of AutoCAD or AutoCAD LT or any other CAD software or analyt
162. r The program will access and open the SAP 2000 S2K file if another program does not have the file locked and inaccessible The program will distinguish between the earlier format S2K files created by SAP 2000 Version 7 and the more recent format used by SAP 2000 Version 8 by the location and structure of the Units as recorded in the file Structural Desktop will then read the remainder of the file as described below Currently units of either feet or inches will be read all measurements of coordinates or prismatic sections dimensions will be converted into inches as necessary The program will read the title of the file for future reference it will be incorporated into your Material Report for example and will proceed to read the Joint Numbers and Coordinates Member information and Plate Information The program expects a letter in front of each value but you should renumber your file so that no two joints members or elements have the SAME number The program will read the Section Properties Material Properties Beta angles if given as an angle not to a point and the thicknesses of the Plates The Joints will display as small circles the Members will display as Lines and the Elements will display as 3d Faces on layers created for you by the program Structural Desktop will read CSI Members drawn from the AISC tables provided with the CSI program and these members will automatically be assigned the STEEL material and density Struct
163. r Plate Elements Meshes fs Connections Solid Elements Solid Objects L Stifeners r Surfaces Diaphrams Envelope Toolbar v Bolts and Number Display Member Display Grid Display Joints Cross Sections Horizontal Members Direction Arrows i Vertical Plate Elements Member Names Solid Elements Surfaces Diaphrams OK Cancel Figure 3 2 Object Display The Object Display section of the Display Options dialog box determines whether or not a specific type of entity will be displayed and is complementary to the layering system employed by AutoCAD Unlike the layering options in AutoCAD when an object is turned off in this box it simply does not exist in AutoCAD at all For the user this means that a large complicated model will update regenerate and process much more quickly if the display is made as simple as possible through this option If you do not need to see elements or joints turn them off here for maximum performance Also if objects do not display when you have turned on all the layers that they should be on check if members or elements have been turned off Joints will display as small circles on their own layer SD Joints Members will display as lines with the CENTER linetype if you have loaded that linetype into your model on the layer SD_Centroids Elements will display as 3d Faces on the layer SD Faces If you change the layer o
164. r Joists and LongSpan Joists This value is negative and subtracts from the length of the bottom chord to pull back the bottom chord from being directly under the bearing plate Figure 5 4 shows a default bottom chord A positive value in this dialog box entry box will extend the bottom chord past the bearing plate for the member Joist Girders set their default value at zero but you may edit that value to any value that is reasonable for the member referenced 65 Defaults and Set Defaults The text grid at the right of the Change Joist Parameters box is there to display the default values for the members you have selected In the event that you wish to return to the simple default value for top and bottom chord extensions click on the Set Default button This will set the extensions to the values in the Defaults display Apply and Cancel The Apply button must be clicked to make your changes to the members take effect The Cancel button will close the dialog box without performing any changes to the members selected 66 CHAPTER 6 Element Modification Commands The objective of this chapter is to help you use the following areas and functions e Element Concepts e Change Face to Element e Change Element Parameters Element Concepts Structural Desktop displays elements through an entity called a 3D Face The 3DFACE command in AutoCAD creates a three or four sided surface anywhere in 3D space You can specify different Z coo
165. r computer Create 3d Drawings Figure 9 2 at right displays the Delete Member Element menu for 3D drawings The first two drawings contain 3D solids and are created for two basic purposes You can use them to create hidden line or rendered drawings and you can use advanced AutoCAD solids 99 Structural Desktop tools to slice cross sections of the solids at angles off of the orthogonal igure 9 For formations or details that are not in line with the X or Y axis of your model these sections provide a measure of utility to create plans elevations and true length views that are beyond the scope of Structural Desktop itself In this way Structural Desktop also enables you to extend its usefulness in areas of unique or unusual designs Create 2D Drawings Create 3D Drawings Selected Objects All Objects Centroid Faces File gt Preferences Once you have extracted a 3D model from AutoCAD and saved it as a drawing it is no longer a Structural Desktop model and is subject to all AutoCAD commands and functions You can delete edit add and share this drawing as a pure AutoCAD drawing e Selected Objects This menu item will prompt you to Select Objects and will create a 3D model in a new drawing window This model will contain only those objects you have selected the Grid Lines for the model as reference lines and layers as you have denoted them e All Objects Every object that h
166. r your analysis phase By applying the full power of AutoCAD you can create complex models more quickly and accurately using only the LINE command or every tool AutoCAD provides After you have performed your analysis Structural Desktop is an aid to getting finished drawings from the information you have in the analytical design file It does not finish drawings for you and it does not perform the analysis What Structural Desktop does do for you is create sharp professional and accurate drawings from a model Structural Desktop gives you the tools to create and adjust that model as quickly as possible from the centroid model you create for analysis design OR from simple lines and faces drawn in AutoCAD For use before analysis Structural Desktop includes gt Aline generator that works to create lines in a rectilinear building pattern that can be used again and again to lay out the basic outlines of a building with different modules The full freedom to adjust the model and add any lines stretch copy and mirror lines until your model is ready to become a Structural Desktop model gt Output of the model in STAAD Pro GT STRUDL RISA 3D or SAP 2000 formats any one or all four Provided tables with Joists C s and Z s and concrete members that can be used for analysis and loading within STAAD Pro GT STRUDL and RISA 3D and for drawing purposes when you return the data file to Structural Desktop After analysis Structur
167. rdinate values for each corner point of a 3D face 3DFACE differs from creating a POLYLINE POLYGON which can create a three or four sided outline that is parallel to the current user coordinate system UCS and cannot use different Z coordinate values for each corner point 3DFACE also differs from creating a SOLID not an AutoCAD solid entity but the 2 dimensional solid which is also parallel to the current UCS cannot use different Z coordinate values and is entered with a criss cross node sequence that is counter intuitive for users of analytical programs For these reasons the 3DFACE command creates an object most consistent with the object behavior of an element in analysis programs You are not restricted as to the orientation of a 3D Face and the object retains the order in which the nodes are specified which permits the object to indicate a direction in which to extrude extend by a thickness into the 3 dimension the element counter clockwise to the direction in which the element nodes are created This enables the 3D Face to generate a solid or to retain the information so that the thickness of the element can be displayed in edge views The extrusion of a Face into an Element Object is shown in Figure 6 1 Figure 6 1 67 Change Face to Element The Change Face to Element command is identical to the Change Line to Member command Structural Desktop displays Members as Lines which contain the necessary informa
168. red as J K L and M Applying an offset does not move the JOINT so these values will not change Offsets There are four sets of coordinate boxes for you to use to move or alter the shape of an element If you move the corners of an element and end up with a non planar shape AutoCAD and Structural Desktop work together to provide the closest approximation to a planar slab that can be drawn from the data you provide In order to simplify the function of moving an element in the X Y or Z axis Structural Desktop has two ways of using these boxes e Static Structural Desktop will interpret a click in the frame of the checkbox labeled Move Entire Element Relative as your intent to move as a unit The Offsets boxes will change to appear as in Figure 6 3 below x o x po x so x o TE TEE peo ERR Mave Ent z fo z fp z fp z fp Baie di Offsets Apply Offsets x x o x fo A Relative Y 0 ___ Y Y ___ b E z 0 z fa 2 o Z Figure 6 3 With Move Entire Element Relative clicked the changes made in the box at the left with an outline around it will apply to every node J K L and M This set of coordinate changes will move the element without changing the relative positions of the corners to each other moving the element as a whole e Apply Offsets Structural Desktop will interpret a click in either of these checkboxes Relative or Absolute as your intent
169. rt The next section is denoted in simple text format by the title Bill of Materials STAAD SPACE ALL SIMPLE MEMBERS The second line is taken from the top line of your analysis file This is to identify the project or section for your convenience The program proceeds from that point to report the members and elements The members are sorted as to type variant within that type and length within that variant Each report sums and separates all the members of each type of a certain length followed by a second report that combines and totals the lengths of each type An example from an actual project heads the next page 76 Total Length of Wide Flanges 5734 5 1 8 Total Weight of Wide Flanges 147973 245 Wide Flange Summary 47 W6x9 234 3 1 4 2108 438 5 W6x25 86 0 2150 000 1 W8x10 8 6 85 000 2 W8x31 36 0 15 16 1118 422 107 W10x12 1481 4 1 8 17776 125 10 W10x33 149 5 4930 750 100 W12x14 1643 2 5 8 23005 063 1 W12x16 25905 400 000 9 W14x22 221 2 3 4 4867 042 13 16 26 284 0 7 16 7384 948 1 W16x31 30 0 930 000 1 16 36 33 0 1188 000 14 W18x35 572 5 3 4 3036471 67 W18x40 289 8 15 16 11589 792 1 WI18x50 25 0 1250 000 7 W21x44 227 53 16 10007 021 3 W24x55 111 0 6105 000 15 W27x84 476 8 1 8 40040 875 The detailed report that preceded this is too long to include here but if each of the 5 W6x25 s listed above had a different length that length would rate that member a separate entry O
170. ructural Desktop module from within AutoCAD This program will either read or create a RISA 3D file translating through a proprietary neutral format to the SDT database within AutoCAD Loading a RISA 3D file is a two step process you click on the button to Select a RISA 3D File which uses a standard file selection box primed to view only files ending in the STD extension as shown in Figure 2 21 below 25 Choose a RISA 3D Input File Lookin CX RISA3D Load Outr3d Member in kip 5 5 r3d Files of type RISA Files r3d Cancel Figure 2 21 You may use the buttons at the top of the dialog box to search for your file in other folders When you double click the desired file or select the file and click Open the program returns to the first dialog box SDT RISA Interface Reading a RISA 3D file DADebugiCrosste sts Loads RISASD Load_Out r3d Select a RISA3D File File Title ARKANSAS CANCER CENTER BUILDING Process Cancel Figure 2 22 The RISA 3D file reader will display the title information from the MODEL TITLE data block of the RISA 3D file as a File Title and displays the complete path to the file as shown in Figure 2 22 If this is the file you wish to open and use click on the Process button If not you can again Select a RISA 3D File as many times as you wish or Cancel at any time 26 When you click the Process button the program
171. s Return to Element Apply Cancel 72 Figure 7 2 Functions of the Double Tee Dialog Box Element Num Identifies the selected elements This is a drop down box that will display all the elements in a current selection set The other text boxes on the dialog box will display the information about the currently viewed number Changing the number in the Element Num box can change the display Depth of Leg This item indicates the distance from the back face of the element to the front of the leg or legs This is a drop down box that will permit depths from 12 inches to 48 inches for Double Tees and Single Leg Tees Thickness This is the depth of the double tee flange based on the thickness of the original element This can be any value in decimal inches Type This selects the standard double tee width that establishes the spacing of the legs When the element is transformed to a double tee the width is measured and the distance between the legs is set As an example if the width of the double tee element is eight feet or less the program sets the leg spacing at four feet between center and sets the type as an eight foot double tee Greater than eight foot and the type is set as a ten foot double tee with five feet between centers on the legs Greater than ten feet is a twelve foot with six feet between the legs Any double tee can be set to have a single leg which will be centered on the face Leg Offset The top or botto
172. s a uniform slope at that X value the elevations will all be equal for any value on the Y axis If the Y axis is selected as the direction of the slope you must provide a Y coordinate The dialog box will change to request the proper coordinate from you so this is a good check point to make certain you are directing your slope the direction that you intend to In either case the corresponding Z coordinate elevation needs to be filled in to place the top of member in the sloped plane The Slope text box on the dialog box requests the slope of the roof in inches per foot This value is either positive or negative e A positive number entered into the slope dialog box increases the elevation of the plane of the roof in a positive X or Y direction e A negative number entered into the slope dialog box decreases the elevation of the plane of the roof in a positive X or Y direction To change the direction of the slope of the roof in a positive X or Y direction such as a gable roof you use a new starting point and a new slope The illustration shown in Figure 4 14 indicates such a setup for one such roof 12 12 L 2 Positive Slope 2 Negative Slope C gt Positive Direction C Positive Direction inches per foot Figure 4 14 inches per foot 61 If you take a close look at Figure 4 14 you will see one other difference in the two halves of the sloped example roof When the members on the left half of
173. s of USER TABLES in a STAAD file START USER TABLE TABLE1L T DATA DAT TABLE 2 CEEZEE DAT TABLE 3 K DATA DAT TABLE 4LH DATA DAT TABLE 5 JG DATA DAT END MEMBER PROPERTY 1 PRISMATIC YD 24 ZD 12 2 TA SD L60355 SP 0 375 UPT 1 R18LB24 4UPT 1 LISLB24 5 UPT 1 T30IT24 6 TA T M14X18 7 UPT 2 C9X2512 8 UPT 2 CS123710 9 UPT 2 CU121214 10 UPT 2 Z8X314 11 UPT 2 ZS123210 12 UPT 2 ZU361220 13 UPT 2 HU10X514 14 UPT 3 K1216 15 UPT 4 LH281 16 5 JG326 UNIT FEET POUND CONSTANTS E STEEL MEMB 1 TO 2 DEN STEEL MEMB 1 TO 2 POI STEEL MEMB 1 TO 2 E CONCRETE MEMB 3 TO 5 DEN CONCRETE MEMB 3 TO 5 POI CONCRETE MEMB 3 TO 5 E STEEL MEMB 6 TO 16 DEN STEEL MEMB 6 TO 16 POI STEEL MEMB 6 TO 16 Please note The user provided tables are designed to work with the American tables and are currently unavailable for use in metric files or with the tables from other countries At this time Structural Desktop cannot support USER PROVIDED TABLES that you create yourself The tables shown have internal descriptions within Structural Desktop that allow the Joists Light Gage and Concrete members provided to be drawn and their weights and volumes where appropriate to be included in Material Reports Members created in Structural Desktop that rely on the USER PROVIDED TABLES are defined in terms of those table names and the above STAAD file was created automatically To use these members for design within STAAD
174. sed using the general selection method such as is used with grips or as is shown in the Structural Desktop Tutorial for changing the layer of a member select all members that you wish to have releases You can do this to one or many members With the grips on the member lines visible click on the linetype bar at the top of your AutoCAD session and click on the linetype that represents the releases you wish to apply either at the start the end or both ends of the member 19 The member will then be displayed with the centroid changed to the linetype desired The arrows within the line point at the released end of the member Start and End for this use are defined as the direction in which the original line was drawn or the sequence in which the nodes are given for the Member Incidences Figure 2 12 SF A member with releases at both ends will therefore be displayed as shown in Figure 2 12 above If the member is fused the releases will be for the Start and the End of the appropriate piece of the member when the STAAD Pro input file is written 20 Load GT STRUDL Input File If you do not use GT STRUDL from Georgia Tech then you may skip this section Loading a GT STRUDL file has changed in Version 4 of Structural Desktop Previous versions read a series of data files created by GT STRUDL referred to as DBX files and wrote the Input files designated with the extension GTI Now Structural Desktop interfaces with GT
175. sents you with only those members and elements that you have selected When the model is very complex this function permits you to simplify what you see before you quickly and easily At any time you can return to the full view of your model by clicking on the Viewing command View You may also use AutoCAD layering techniques with this function to further refine what you see on the screen The only way to return objects to a usable visibility is to select the View All function from the Viewing menu See Figure 3 4 above which is the last option in the Viewing menu Remember that the corresponding Type of object must be clicked on the Display Options menu You can turn all members off at once by turning them off at the Display Options menu Further the AutoCAD layer the object resides upon must not be frozen if it is to be visible With practice these three options give you a great deal of power in what you select to view from the model The View by Range command opens a dialogue box as shown at the right in Figure 3 5 below View By Plane Lx View By Range Point Picked From To x Ne Members 201 499 p PeintSetBy Elements jo v 2r Selection Envelope Width selection ten C Completely Within Envelope C AtLeast1 Jointwithin Envelope 1 45 The View by Range command uses the numbering sequence of your original input file
176. t if the original file has taken slope into account in the location of the original member joints and they are placed in the plane desired Please see the description of this function for more information on this involved topic SDAGL AddGridLine Begins the process for inserting grid lines SDGL edit GridLines Permits viewing of all gridline data and editing of that data to change grid lines SDDELETE DELETE Totally and permanently erases a Member or Element If you want it back you must create a new one because it is gone 96 Output Drawing Commands The intent of Structural Desktop is to take your design file and give you complete drawings of all the objects that file supports The following commands will open a new window in your AutoCAD session and draw the requested objects in that window It is then up to the user to check the drawing save it as an AutoCAD drawing file under the name of his choosing and close the drawing window before proceeding with further Structural Desktop functions 3D Drawing Files SD3DALL 3D ALL Creates a 3D solid model of the entire file all Members and Elements Similar to the display you see when you choose Display Options Solid Mode but there are no Joints Centroids Faces or data associated with these objects as in Structural Desktop The file is strictly 3D solids for you or your user client to do with as you wish SD3DSEL 3D SELected objects Prompts you to select MEMBERS and
177. t std joist std File name Open Files of type STAAD Files 1 Cancel 4 Figure 2 6 You may use the buttons at the top of the dialog box to search for your file in other folders When you double click the desired file or select the file and click Open the program returns to the first dialog box SDT STAAD Pro Interface Reading a STAAD Pro file p Debug Crosstests Parameters STAAD Dale STD File Title DALE Process Cancel Figure 2 7 The STAAD file reader will display the title information from the first line of the STAAD Pro file as a File Title and displays the complete path to the file as shown in Figure 2 7 If this is the file you wish to open and use click on the Process button If not you can again Select a STAAD Pro File as many times as you wish or Cancel at any time 15 When you click the Process button the program will load the title of the file for future reference it will be incorporated into your Material Report for example and will proceed to read the Joint Numbers and Coordinates Member Incidences and Element Incidences The program will read the Member Properties Element Thicknesses and constants such as Beta and Density With the introduction of Version 4 Structural Desktop will continue to read and record your STAAD Pro file with a much greater degree of completeness than in previous versions It will read and retain Surfaces
178. tc Removing linetypes or adding layers can affect the performance of Structural Desktop and should be tested on a case by case basis If you require assistance with this do not hesitate to contact Structural Desktop Inc STEP 5 Modify Second Desktop Icon The other Windows Icon is used to load Architectural Desktop and a drawing Template that permits import of Structural Desktop members as Architectural Desktop members This icon will require ONLY that you change the Template file referenced by the shortcut The result of this change will look like C Program Files Autodesk Architectural Desktop 3 acad exe t SDTADT dwt p C Program Files Autodesk Architectural Desktop 3 adt arg Any changes you wish can be made to the Template file SDTADT dwt such as adding more linetypes changing dimension styles or text styles etc Do not purge any of the Structural Member styles from the Template file you may purge unused styles from your drawing once the Structural Desktop members have been imported Once this has been accomplished you will be totally within an Architectural Desktop session and any questions on that program or the Architectural Desktop Structural Members should be researched through Architectural Desktop documentation and help resources 136 Structural Desktop SDT Architectural Desktop ADT Interface Transference of files from SDT to ADT Structural Desktop is designed to work as an entity unto itself The
179. that are comprehensible to humans also permits the extension of the format to include Eccentricities Releases Loads and Load Combinations and Parameters This information is both read and written back to any GT STRUDL file generated from the model RISA 3D Improvements RISA 3D Versions 5 5 7 0 are now supported and the Round Turn Too Structural Desktop Version 4 0 is a complete refactoring of the approach to RISA 3D used in previous versions Structural Desktop formerly read RISA 3D files from Version 4 52 to Version 5 5 and all files that were written from Structural Desktop were written in the Version 4 52 format We have now moved our support base to Version 5 5 Structural Desktop writes this version which can be read by all Versions of RISA 3D Software 5 5 or greater and reads all versions from 5 5 to 7 0 Structural Desktop extended reading capability to include Boundary Conditions Grid Lines Releases Loads and Load Combinations and Parameters This information is both read and written back to any RISA 3D file generated from the model 132 Appendix G Working with Architectural Desktop Structural Desktop SDT Architectural Desktop ADT Interface Installation and Setup for ADT Users Structural Desktop SDT works with a proprietary set of objects created separately from and with different data and properties than ADT structural objects The internal database for SDT retains information required for two way inter
180. the members are in the same plane Alter the slope of the roof of a model Top of Member Slope is designed to deal with roofs that have a slope in the direction of the X or Y axis in AutoCAD The dialog box that you will see after you select this command from the menu and select members to be modified appears in Figure 4 13 4 Top of Member Sloped LX Axis Starting Point K Axis x C Y Axis zu Beta Angle Slope Match Slope Inches Per Foot Beta Angle ESSE No Change TN Figure 4 13 60 Using the dialog box to set a slope on selected members begins with the Axis box Select the Axis X or Y in the dialogue box The direction of the slope should be parallel to the direction of the X or Y axis Other slope directions are not supported at this time The program starts with the direction of the slope and a starting point What you are basically telling the program is that the top of the roof plane slopes in a particular direction and passes through a particular point Since there can only be one plane that passes through any given point and represents a roof with a set sloping angle the program can calculate and place members based on the information in this dialog box The Starting Point values require two coordinates If the X axis is selected as the direction of the slope you must provide an X coordinate as shown being requested in the dialog box of Figure 4 13 If the roof ha
181. tion to link to the database and permit all the modifications and displays that go with members This command permits you to add element members to the database that were not in the original analytical file You can also use this command to create elements for a model created from scratch Before you use the command you are expected to create the 3D Faces The 3D Faces must be on AutoCAD layer 0 The program will ignore any object that is not a 3D Face or line when executing this command but it will also ERASE any AutoCAD object that is not a member joint or element of Structural Desktop Since this includes any lines that you may wish to turn into members you must remember to select lines and elements that you wish to change to members and faces If you draw lines and faces and only select one or the other the other type is going away Once you have all of the faces drawn that you wish to change into elements right clicking the mouse while the cross tee is on the graphic screen engages the Shortcut Menu Selecting Change Face to Element displays the Select objects prompt Select the faces or just type all on the command line Structural Desktop will ignore all Structural Desktop objects while performing this command If you use the all command however the faces will not be changed to elements in any predictable numbered order To create elements in a particular numbered sequence select them in the order you wish them to be numbered by
182. tions of objects rather than as lines This also promotes the goal of Structural Desktop to produce drawings as quickly as possible which can then be used in unmodified AutoCAD in any way you wish with lines circles polylines xrefs or blocks as the user desires A Structural Desktop Regeneration will occur every time you click OK on the Display Options dialog box It will also occur if you begin a function such as Change Member Properties while in the Solid Objects display mode or when you create a new member or element from a line or 3d face Lines and circles and other ordinary AutoCAD objects are not a part of the database for Structural Desktop There is now a function new to Version 4 0 that performs the Structural Desktop Regeneration directly from the menu This is covered in the next section on Other Options 42 Other Options Repeat PAN Structural Desktop General Display Options Other Options Regen from Database cut Viewing Analytical Icon Options Copy Copy with Base Point Fuse Members Adjust Members Elements Paste Defuse Move All Paste as Bloch Intersect Break Paste to Coordinates Undo Figure 3 3 The second item on the Structural Desktop menu is the Other Options menu as shown in Figure 3 3 above This sub menu contains two commands and settings for two special preferences The command Regen from Database is a shortcut to the Structural Desktop
183. to an advantage Members numbered in sequence can be parceled off from the rest of the members in your model You can use a range of member numbers and a range of element numbers if you wish but elements will not be affected if you do not enter a range for them they will remain visible Likewise selecting a range of elements but leaving the members range untouched will only remove the elements not in the numeric range selected By selecting the View by Plane command the Command Line requests you to select a point on the screen This selection can be done by using any snap point of a member or by entering a coordinate The View by Plane dialog box appears as shown in Figure 3 4 above on the left The concept for View by Plane is that you want to view a single floor of a structure with or without attendant members that pass through the horizontal plane of the floor or that you wish to sequester a set of members and elements associated with one or another grid lines or elevations with any rationale you wish All that is required to use this function is that you have an orthogonal plane in mind The dialog box displays the three coordinates of the point you have selected Directly beneath these boxes are three checkpoints associated with the controlling coordinate axis for your plane If you want a horizontal plane the Z axis controls the elevation so you select the Z button If you want a vertical plane parallel to the X axis the Y axis determi
184. ts Parameters GTStrudl AnotherNewFile gti S DaleOUT gti 2 Member_Parameters_ASD9 gti Select GT STRUDL File 3 NewDale gti 2 Parameters gti 2 ParametersDel gti File Title Ready to write file 2 ParametersNew gti Comment Ee d File name AnotherNewFile Save astype GTI Files gti Cancel 4 Process Figure 2 18 23 Structural Desktop User Provided Tables Members created in Structural Desktop that rely on the USER PROVIDED TABLES are defined in terms of those table names A section of a GT STRUDL file created using these members is provided below In order for these members to be used within GT STRUDL you must copy the relevant USER file from the directory on your hard disk or on the supplied installation disk to the temp directory which you indicate to GT STRUDL when you load the input file The table provided is designed to work with American tables and is in Imperial units At that time you must specify the data file StructDT ds which is provided on your hard drive in the directory C Program Files Structural Desktop GT STRUDL User Files The section of a GTI below shows how Structural Desktop calls for rectangular prismatic members and a wide flange section It also demonstrates a joist girder a light gage C section and a concrete Inverted T called from our provided table which permits design with these members MEMBER DIMENSION 1 RECT B 24 000000 H 12 000000 MEMBER PROPERTIES TABLE
185. tural Desktop Joists The Joists button will invoke three tables One is for Joist Girders denoted by JG The intermediate size is denoted as Long Span or LH joists Short Span or Bar joists are denoted by K These members also have User tables for use within your analysis program e Concrete The Concrete button invokes two tables for Concrete L s and one for Inverted Tees There are two L files for the same reason that unequal leg angles are capable of being specified as Reverse Angles These files contain members that have a handedness and that cannot be simply reversed to display the way you might wish them to The Concrete members also have corresponding Structural Desktop user files for use within STAAD GT STRUDL or RISA 3D e Pipe The Pipe button denotes Strong Double Strong and Double Extra Strong pipe sizes e Wood Aluminum FRP These buttons are shown on the dialog box but the tables are still under development for future versions of Structural Desktop You may browse within the Component Tables until you find the member you wish to assign Highlighting or double clicking on the member and clicking OK will assign that member name and its properties to be brought into the Change Member Parameter box You then must hit the Apply button on the previous dialog box to assure that these properties are distributed to the members selected Pressing Cancel in either dialog box will void the change For information purposes on
186. ural Desktop requires that the NAME of the section as defined in SAP 2000 is unchanged from the name given from the table Structural Desktop will not assign the proper Member Type values to a W14x99 that has been given the name Column1 for example but will properly process the geometry of the member For all the relevant properties to apply permit the SAP 2000 program to assign the default name of W14X99 from the table Prismatic sections can be created with any name e g FSECI BEAMI and will be converted into prismatic sections in Structural Desktop For your ease in identifying the member the Description field will display the Name as you have defined it in SAP 2000 Material types labeled CONC or CONCRETE and STL or STEEL will be applied to prismatic sections from a SAP file Other Material definitions can be corrected within Structural Desktop using the Change Member Parameters or Change Element Parameters dialog boxes to set Aluminum Lightweight Concrete or Wood or to set incompatibly labeled Steel or Concrete sections Create CSI SAP 2000 Input File Structural Desktop will create a Version 7 SAP 2000 Input File from the menu item Create SAP 2000 File This file can be read into Version 8 by using the translator provided by CSI and will support Prismatic Sections and AISC members 31 Working With Structural Desktop from Scratch Structural Desktop is also designed to work without an analysis file and this is the
187. us S eG ie d Ro Rise es 103 LH Tab Le ewe ex E De Eie 117 Light Gage 5 oe vss cee we ene 103 Dine Generator e esaea eE S E on E RU eere 33 Dime to keee RAE EVE Ss 50 143 144 M Page Material REPOGE 7 ree ey Ye T5 Material Change 55 Material Change Element 69 Member Names 39 eui ex xo woo re wd a 52 Member Number 5 41 Member Change Beta 54 Member Change to Prismatic 54 Member Change 54 Member from o o bea wae 50 Members Def se s iiluvex os UU Rer 50 Members PUSE wet bacs ee a tuse NOR OR NEU ee 49 Bile RUP RUN RU e RUE wiles Sek 8 Menu e d Stat ace 12 Mirror AutoCAD command i es 86 Miscellaneous 15 102 Move AutoCAD 85 N Negative SLOPE Re TR 61 Numbers Display ssoseesecree mmm was 41 o Offsets Changers SUR e Ug 53 Offsets ta l4 eue 54 P mov 103 PoOsltlive
188. wed by the methods and commands to Create an analytical file 13 Loading a STAAD Input File If you do not use STAAD III or STAAD Pro from Research Engineers Inc you may skip this section Load Structural Desktop Hold File Save Structural Desktop Hold File Open Structural Desktop Document STAAD Interface Load STAAD Input Flle GT STRUDL Interface Greate STAAD Input File RISA Interface CSI Interface Load Autosave Backup Hold File Figure 2 4 Recover Hold File Bata Structural Desktop uses the input file from Staad III and Staad Pro from Research Engineers Inc as a starting point for model creation This file ends in the three letter extension STD When you select this option the program will open the dialog box shown in Figure 2 5 below EA SDT STAAD Pro Interface x Reading a STAAD Pro file Select a STAAD Pro File File Title cae Figure 2 5 This is a new program exclusive to Structural Desktop Version 4 that is invoked by the Structural Desktop module from within AutoCAD This program will either read or create a STAAD Pro file translating through a proprietary neutral format to the SDT database within AutoCAD Loading a STAAD Pro file is a two step process you click on the button to Select a STAAD Pro File which uses a standard file selection box primed to view only files ending in the STD extension as shown in Figure 2 6 below ax 5 DaleOut STD DaleQut1 STD 5 DensityTes
189. without affecting the underlying analytical file General Improvements Expanded Support Structural Desktop Version 4 0 now includes three separate installation modules One installation supports AutoCAD 2000 20001 and 2002 The second installation supports AutoCAD 2004 2005 and 2006 The newest installation supports AutoCAD 2007 2008 and AutoCAD 2009 In order to provide this support Structural Desktop was split into ten separate modules with only one dependant upon AutoCAD programming This takes full advantage of more advanced Windows and multi core personal computer CPU modules while remaining friendly to lower powered older systems STAAD Pro Interface Improvements The Full Round Turn Structural Desktop Version 4 0 now reads and retains the information from Supports Releases Loads and Load Combinations Parameters and even different Print and Perform Analysis statements in the original STAAD Pro file This information is written back to any STAAD Pro file generated from the model GT STRUDL Interface Improvements The Full Round Turn Structural Desktop Version 4 0 is a complete refactoring of the approach to GT STRUDL used in previous versions Structural Desktop no longer relies upon the user to generate the GT STRUDL dbx files in the proper order and with the proper names but rather reads and writes the input files for GT STRUDL with the GTI extension The ability to both read and write the same file formats
190. x As long as the number of spaces is correct any inequality in the positioning of the panel points can be quickly adjusted in the final drawing in AutoCAD by you or your draftsman Top Extensions The Start and End extensions at the top of the symbolic joist on the dialog box will add inches to the top chord of the member The actual length of the member as seen in the Change Member Properties box is measured from the outside of bearing plate to outside of bearing plate chord extensions are added to that length in addition to it Once you have added an extension to the top chord changing the length of the member either parametrically or through an AutoCAD action such as trimming the member or stretching it will not change the extension The extension itself can only be edited through the dialog box since any attempt to stretch or alter the line representing the member affects the member not its internal structure Negative values cannot be accepted by the program for a top chord extension since to do so would remove the top chord component from the support of the bearing plate component of the complex member Figure 5 4 shows a 3d solid of a top chord before and after a 24 inch extension is made to the member Note that the dashed line representing the member ends at After Extension the bearing plate Figure 5 4 Bottom Extensions Bottom extensions default to a value calculated from the depth of the member for Ba

Download Pdf Manuals

Related Search

Related Contents

三重県 新築住宅：平成18年6月～ 既存住宅：平成20年6月  Guía del usuario de Document Solutions Desktop  ゼルダの伝説 風のタクト HD  Attuatore a membrana 656 Fisherr  Samsung GT-S6310 Brugervejledning  User Manual  Catalogue des formations soins energetiques 2014/2015  GICATEC nanoBox V1.0  CG-HDC2EU3100 取扱説明書  

Copyright © All rights reserved. Failed to retrieve file