CROSEC
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1. the common lines must have the same length and angle the program will not stretch squeeze or rotate a subsection when attaching it to the another one ifthe sections have different factors thicknesses the combined section will have the thickness of the first section selected holes may be selected Version 12 0 6 5 12 05 CROSEC e lines that are coincidental but were not those selected will not be combined For example b The torsional properties of this section a will be different from those of the same section attached on the bottom face b Version 12 0 6 6 12 05 CROSEC 7 Section Table Create a table of identical sections with different dimensions Each table can be transferred as a section type to the STRAP properties table as cold formed sections Create table Edit table Delete table Transfer to STRAP Refer to 7 1 Create table 7 2 Edit table 7 3 Delete table 7 4 Transfer to STRAP 7 1 Create section table Create a table of identical sections with different dimensions from an existing line section Each table can be transferred as a section type to the STRAP properties table as cold formed sections select one of the existing line sections Section selection Select a sector Cancel e Enter the name of the table Hew section table Section table name Cancel more than one table may be created from the same section the name entered2. A TIR CROSEC for Windows Section Properties Calculation USER S MANUAL Version 12 0 December 2005 Version 12 0 1 1 12 05 CROSEC Table of Contents T General 6455555 654 ESRFRERPSESROSRRESARARSEAZOSREASCSEARCSEARSELSPSEJSS GS 1 1 1 1 Program Specifications 1 1 12 1 1 2 13 Hints and suggestions 1 3 2 pd ee Se ve ee ee pee eee ee 2 1 3 File 3 1 Za VIEN TUE uazax ades 4 1 5 Section menu 5 1 5 1 New line section oa ug 062848 900 35 as t haw be Odea eee 5 2 5 2 New solid section 4 45808 eee bend daw teehee tens baw eee 5 4 5 3 Select another section 22542442 eo ee 5 5 54 2 4 5 5 21151055 101 5 5 5 6 5056 5 6 5 7 Con
3. 1 2 How to use the program Select New line section or New solid section in the Sections menu in the menu bar New line section define a series of connected segments to form the section New solid section define a closed contour to form the section e Add subsections if necessary to create more complex sections For example New line section define a series of connected steel sections to form light gauge steel sections The subsections are defined separately and must be connected New solid section define a hole in the first contour e Select Display properties in the Output menu in the menu bar to display the computed section properties A 1 J centre of gravity etc and Print section to print the results e Transfer the properties of the current section to STRAP geometry select Copy to clipboard in the Output menu in the menu bar For line sections only Create a table of cold formed sections for the STRAP properties table The table is created from a Line section by defining sections with similar shapes but with different dimensions select Create table in the Section table menu in the menu bar select an existing Line section and enter a table of dimensions for the shape select Transfer to STRAP in the Section table menu in the menu bar to copy all section in the table to the STRAP property files as cold formed sections Version 12 0 1 2 12 05 CROSEC 1 3 Hints and suggestions e For separated back to bac
4. Click on segment al 2 Click on segment a2 m m m The program redraws i the section a2 E and only the column a3 be displayed in the Section table for this section Version 12 0 6 1 12 05 CROSEC Make a dimension a sum of dimensions Use this option to specify that the length of a segment must always be equal to the sum of the length of other segments For example 3 I To define a7 a5 a3 a1 click on the dimension name a7 click on the dimension name a5 the program displays the dialog box 3 Subtract another dimension End definition click Add another dimension e Click on the dimension name the program displays the dialog box with a7 a5 a3 Click Subtract another dimension click on the dimension name a1 the program displays the dialog box af abtab al a Subtract another dimension End definition e click End definition Make dimension independent Click on a segment with an dimension name the segment name will revert to its original one Version 12 0 6 2 12 05 CROSEC 6 2 Revise dimensions Revise dimensions for line sections only e the program redraws the current section at the top of the screen with the dimension names a1 a2 an in place of the dimension values e the program displays a table at the bottom of the screen with the current value for each
5. Mirror about horizontal asis Cancel For example Mirror about i Copied vertical axis u Mirror about horizontal axis Move the section reference corner to the correct location and click the mouse Note that the program continuously revises and displays the corner coordinates 315 60 12 0 6 4 12 05 CROSEC 6 6 Add a corner Add a corner to an existing section For example to revise the rectangle in Figure a to the pentagon in Figure b and new corner must be added to line 1 7 a b highlight the line that is to be divided and click the mouse e the crosshair will be placed at the centre of the line move the crosshair to the location of the new corner and click the mouse T A x 59 Dx OK 200 Dr 5 Cancel Note that DX DY in the box at the bottom on the screen indicates the position of the crosshair relative to the start corner of the existing line 6 7 Delete a corner Delete a corner of an existing section For example deleting the corner as shown in Figure a will create the section shown in Figure 0 delete this 7 a b Select the corner by highlighting it and clicking the mouse the corner will be deleted 6 8 Unify subsections Combine two subsections along a common line to form a single section ONY Select the two common lines by highlighting them and clicking the mouse Note
6. dad car cd ar ddr ae o t T d 9 1 Display DIODENIES qub soe e bod qub Bab agris 9 1 9 2 Print section iau amd 9 4 9 9 Copy IO CIIDDOGEG RR dn D BES hehe bk ee HERR ee Ro Rot 9 5 Version 12 0 1 2 12 05 CROSEC Disclaimer The CROSEC program has been written by a team of highly qualified engineers and programmers and has been extensively tested Nevertheless the authors of the software do not assume responsibility for the validity of the results obtained from the programs or for the accuracy of this documentation The user must verify his own results The authors remind the user that the program is to be used as a tool for structural analysis and design and that the engineering judgement of the user is the final arbiter in the development of a suitable model and the interpretation of the results Windows is a registered trademark of Microsoft Corp AutoCAD is a registered trademark of Autodesk Inc Version 12 0 1 3 12 05 CROSEC I General 1 1 Program Specifications CROSEC is a program that calculates the properties of geometric sections area moment of inertia center of gravity etc The program can calculate all properties that are required for the design of cold formed light gauge sections All line sections with any arbitrary shape defined in this program may be transferred to the STRAP steel postprocessor and can be calc
7. dimension revise any of the dimensions the section properties in the table will be automatically updated click to exit and redraw the section 6 3 Move corners Use this option to move the corners of an existing solid section For example increase the width of the rectangle below to 90 e select the two corners on the right edge of the section by highlighting them and clicking the mouse Fig e drag the mouse to the right until the horizontal dimension is displayed as 90 Figure b click the mouse the section will be redrawn with the new dimension 70 30 1 c z e 315 60 70 3n RR a bj Version 12 0 6 3 12 05 CROSEC 6 4 Copy a subsection Copy a subsection to the clipboard The section can then be added to the the current section or another section using the Paste a subsection option in the same menu Note that more than one subsection may be selected at the same time e select the first subsection to be copied the program will highlight all corners in the section closest to the crosshair Click the mouse select additional sections if required End selecti Click the mouse again or click Lll to end 6 5 Paste a subsection Paste a Copied sub section to the current section The section is copied to the clipboard using the Copy a subsection option in this menu The section may be flipped vertically or horizontally when pasted Paste Mirror about vertical axis
8. of connected segments the start of the current segment is the end of the previous segment e the end location of each segment is defining by moving the crosshair on the screen or by typing in the coordinate e the section is completed by double clicking the mouse or by clicking the Erd button For example o To define the end ofthe 2010 segment p a move the to the correct location as indicated by or DY in the dialog box below and click the mouse OR y b type the values or Ds DY in the dialog box below and click gy 235 D End Y 75 75 Cancel Close Step 5 F3l 41 4 1 distance from origin To change the step DA D distance fram end of previous segment press the F3 F 4 keys OR End to complete the section OR double clickthe mouse Slick the F buttons Cancel ta cancel the previous segment OR rightclick the mouse Close ta join the end of the current segment to the start of the 1st segment form a closed section Version 12 0 5 2 12 05 CROSEC Note screen dimension thickness and Inside bend radius must be defined according to the same unit mm cm ft etc e segments with different thickness values must be defined as separate subsections and then combined no bend radius will be drawn if three segments intersect at the same point Hints e For separated back to back channels angles etc connec
9. that will be printed in the header at the top of every printed page e First page no page numbering will be consecutive e Date the date format is specified in the Windows Control panel Prepared by e Subtitle send to file to send the drawing to a file 9 3 Copy to clipboard Use this option to copy the properties of the current section to STRAP e select Copy to clipboard e inthe STRAP beam properties menu DetinefRevise highlight a property group line and click button click the 884 Jicon the next menu select the material and specify the units used when defining the section the dimensions cannot be converted to any other unit The relevant properties A 12 etc will be displayed in the section table Version 12 0 9 4 12 05
10. 219108 5 radius of inert r 127 357 ry 85 0185 Torsional flexural buckling const jx 94 04594 jy 143 074 Properties about principal axes angle 27 5197 Mom of inertia lu 1 292E 006 lv 255946 6 C 0 G ut 204 605 vt 143 526 shear center ull 2 9718 vi 102 585 elastic modulus 35u 47 7242 8 3v 7 8329 2 radius of inert ru 139 693 r b2 2737 Area moment of inertia elastic modulus radius of inertia L dAy 1 2 r LA fy Tyla L dAv 1 4 42 Tu M LA Su Lut Version 12 0 9 1 12 05 CROSEC Center of gravity principal axes Iv principal axes Center or Iu T gravity Angle counterclockwise clockwise coordinates at lower lett comer of frame surrounding the section contour J Torsional Moment of Inertia Solid sections J is calculated according to the method of finite differences The method is approximate but the error for most sections is in the range of 1 2 4 5 for sections with many holes Line sections The program calculates J using the membrane analogy method for thin walled sections for examples refer to Theory of Elasticity by Timoshenko and Goodier Shear Center and Warping Constant Referring to the AISI Cold Formed Steel Design Manual Part Supplementary Information to the August 19 1986 edition shear center distance from shear centre to centroid along the principal x axis Yo dista
11. 4 Toolbar 4 Status Bar 111 az 1111 113 89 m T E T PX ie 3 P Center ot gravity Dimensions ab m E 2 3869 da ATTI 486 a3 az stress diagram Dimension names Note Dimension names and Stress diagram are not available for Solid sections e The stress diagram shows the normal stresses required for the calculation of the shear center location Version 12 0 4 1 12 05 CROSEC 5 Section menu Mew line section Mew Solid section Select another section Delete section Add subsection Delete subsection Connect subsections Revise a connection Refer to 5 1 New line section 5 2 New solid section 5 3 Select another section 5 4 Delete section 5 5 Add subsection 5 6 Delete Subsection 5 7 Connect Subsection 5 8 Revise a connection Version 12 0 5 1 12 05 CROSEC 5 1 New line section Define a section composed of a series of connected lines each with a specified thickness For example 65 Zhi e Define 5 segments thickness and hend radius ta create the section Sa Define the section parameters Hew section Fa Section name 2 Define the section title specity the screen dimension Screen dimension 1500 slightly larger than the maximum Thickness Inside bend radius fo Cancel section dimension Line sections are created by defining a chain
12. To define the end af the 2nd segment a move the to the correct location as k indicated by or Dx DY in the dialog box below and click the mouse OR b type the values Y ar DY in the dialog box below and click IDX UK 5 px vie wfs Cancel 4 7 distance fram origin change the P step Dx OY distance from end af previaus segment press the keys OR tlick the buttons End ta complete the section OR double click the mouse Cancel ta cancel the previous segment OR rightclick the mouse Version 12 0 5 4 12 05 CROSEC 5 3 Select another section Select and edit an existing section New subsections may be added and the dimensions of the current section may be revised Select a section from the list displayed Section selection Select section Double tee z with lips Hat 200 Upstarnd qud Cancel 5 4 Delete section Select a section to delete from the list displayed 5 5 Add Subsection Combine a new section with the initial one the program will calculate the section properties of the combined section For example Solid section Line section Initial section 21 2 subsection up to 50 subsections can be added to the initial section line sections the sub and initial sections must be connected at selected selection corners refer to Connect subsections Define all subsections before combining th
13. em 4 solid section the sub and initial sections do not have to be connected Define the subsection parameters e Line section thickness and bend radius Version 12 0 5 5 12 05 CROSEC EJ 3 e Solid section Factor Enter a value gt 1 ar 1 far different material ar thickness Thickness Inside bend radius F Cancel A normal subsection has a factor 1 00 Enter values 1 00 for subsections with different thickness etc Add regular subsection with the factor specified above add a hole subsection with factor 5 1 Additional sub section Define a hole Cancel i 5 6 Delete subsection Line sections only the program will refresh the screen with the subsections displayed separately Click on a subsection confirm to delete 5 7 Connect subsections All of the subsections must be connected to form a single final section the program will not calculate the properties if the subsections are unconnected Subsections may be connected only at their corner or mid points to connect at any other point define the segment as two separate ones joined at the necessary connection point For example ITI create the channel section and the angle subsection e select the Connect subsections option theprogram displays the connection point on the section at every corner and at the midpoints of both sides of every segment select the lower right corner
14. here will be the type name displayed in the STRAP steel postprocessor Version 12 0 7 1 12 05 CROSEC the program displays the section with the dimension names and a table with a column for each name m 2 t az Dialog 240 130 5 130 240 4 1b 28038172 250 ES i qm CO nm Cancel current enter the name and dimensions in each table row the program will automatically calculate the section properties A etc e select Transfer to STRAP to copy all of the the sections in the table as Cold formed sections to the STRAP property tables Click curent to make the highlighted line in the table the new section on the screen after clicking to leave the table 7 4 Edit table Select a table for the list displayed and edit the dimensions Refer to 7 1 Create section table 7 3 Delete table Select a section table from the list displayed the entire table will be deleted Version 12 0 7 2 12 05 CROSEC 7 4 Transfer to STRAP Add all sections in the current section tables as cold formed sections to the STRAP property tables Transfer a table to strap Fa Select a section table Hat 200 i Section Hat 300 dimensions milimeter Cancel highlight o
15. k channels angles etc connect the two channels with a subsection having the correct length and a thickness 0 01 Example a Refer to 5 7 Section connect e For connected back to back channels etc where the slenderness of the web must be calculated using the combined web thickness define the web as a subsection with the double thickness and the flanges by four subsections connected to the corners of the web Example b e For connected back to back channels etc where the slenderness of the web must be calculated using the web thickness of a single channel define the second channel as a subsection and connect at one point Example c To compute Detine t 0 01 a 1 01 01 h for slenderness p 17 for slenderness Version 12 0 1 3 12 05 CROSEC 2 Main menu PH C My Documents sec cros File View Section Editsection Section table oom Output Help zx ejs Ead CIA Select one of the following options in the menu bar File refer to 3 View refer to 4 Section refer to 5 Edit section table referto 6 Section table referto 7 Zoom referto 8 Output referto 9 Refer also to 1 1 Program Specifications 1 2 How to use the program 1 3 Hints and suggestions Version 12 0 2 1 12 05 CROSEC 3 File menu All defined sections are saved in a file nnn SEC where nnn is specified by the user When the user starts the program the program automatically o
16. nce from shear centre to centroid along the principal y axis 24 f WY tds 257 vor xtds Cw Warping Constant a L L 2 Cw tas T sectorial coordinate relative to the centroid bud Sectorial coordinate relative to the shear centre Version 12 0 9 2 12 05 CROSEC Torsional flexural buckling constant Referring to the AISI Cold Formed Steel Design Manual Part V 1996 Edition Section C3 1 2 Lateral Buckling Strength i n X dA xy aa xs z L ydA Vn where distance from the shear centre ta the centroid along the principal 5 taken as negative ys distance from the shear centre to the centroid along the principal Y axis taken as negative Version 12 0 9 3 12 05 CROSEC 9 2 Print section Use this option to print the current display directly to the printer or to a file The printed display will be enclosed in a frame and will include a header HF Lasertet Ill T Setup First page no 2 Date 07 07 fia Prepared by Send output to a file Cancel Send output to Subtitle Send output to Select the output unit e g printer plotter etc The devices must be installed by the Printers option in the Windows Control panel Setup Specify general information for the output device selected e paper size e graphic resolution etc Page no subtitle etc Define information
17. ne of the section tables in the listbox e specify the dimension used when creating the sections all values will be written in millimeters in the STRAP file Note This option will create a section type with the name of the section table displayed in the list box The program will search the section file for a section type with the same name if it finds a type with the same name it will search for sections with the same name Sections with the same name will be overwritten Version 12 0 7 3 12 05 CROSEC Zoom menu Full screen Create window oor nul Zoom full screen Display the entire section maximum size on the full screen Zoom window Zoom in on any part of the section by creating a rectangular window click the mouse with the at the lower left and upper right corners of the rectangle Zoom zoom out Reduce the size of the section on the screen in steps of 10 Version 12 0 8 1 12 05 CROSEC 9 Output menu Display properties Print section Copy to clipboard Refer to 9 1 Display properties 9 2 Print section 9 3 Copy to clipboard 9 1 Display properties Display the section properties of the defined section For example r W 10 280 Area 6600 of inertia Ix 1 071E 006 ly 47 705888 J 220000 217 127 from left yt 11 7 273 from bottom Shear center x 1 5 7 335 yO 112 169 Cw 4535 45 3 elastic madulus 3x 392521 2 5
18. nectsubsections 5 6 5 8 5 5 7 6 Edit SCCHUON Table 6 1 6 1 Sections Dependent dimensions 6 1 6 2 Revise dimensions 6 3 6 3 MOVE corners ceo bre ded druck Ghee Sed deve bbe ebb hw bbw Sood deed d 6 3 6 4 Copy a subsection 0 eee eee 6 4 6 5 Paste a subsection RO de OS OG POSH SEE WS PAH US de ERS SEES 6 4 065 20122400 oo ek bac eee ee ee Ee 6 5 6 7 Delete a corner cc 6 5 6 8 Unify subsections 6 5 7 Section Table 7 1 7 1 Create section table 7 1 72 MEN odi ce a ee ie ee ea ee ee ee ee a ee 7 2 7 3 225522542562 5 808 Ge EG Gar Oa 7 2 7 4 Transfer to STRAP 44252244444 64 5 6056 46 che bb nob eke 7 3 8 ZOOM 8 1 B 485 dada d ua eir cars di arf dp a adu ar ir ar
19. of the channel 100 100 k e select the lower left corner of the angle Version 12 0 5 6 12 05 CROSEC 100 210 40 100 the program displays the connected section Refer also to 1 3 Hints and suggestions 5 8 Revise a connection e select the two connected subsections redefine the connection between them as explained in Connect subsections 5 7 Version 12 0 5 7 12 05 CROSEC 6 Edit Section Table Dependant dimensions Revise dimensions Move corners Copy subsections Paste a subsection Add comer Delete a corner Unity z subsectors Refer to 6 1 Dependant dimensions 6 2 Revise dimensions 6 3 Move corners 6 4 Copy subsection 6 5 Paste a subsection 6 6 Add a corner 6 7 Delete a corner 6 8 Unify 2 subsections 6 1 Sections Dependent dimensions Each segment is automatically assigned a different dimension name by the program a1 a2 t1 r1 However certain segments may always be equal particularly in symmetric sections or the length of a segment may always be equal to the sum of the lengths of other segments This option is relevant only if a Section table is created from the current section the amount of data that must be typed in may be significantly reduced Use this option to define dependent dimensions Make 2 dimensions equal Make dimension a sum of dimensions Make dimension independent Make two dimensions equal Example 1
20. pens the last file accessed Mew Lie Save Ltrl S Save As Files New Open a new section file If you have not saved sections defined in the current session the program will ask whether to save them in the current file before opening the new one the sections will be erased if you do not save them The program will prompt for the file name only when you select Save Save as or Exit Files Open Open an existing file The program displays the list of section files in the current folder double click on one of the file names to open it or type in the file name in the File name edit box and click Look in My Documents Pus use the select a different folder or open a new folder e options at the top of the dialog box to Files Save Save all sections created in the current session in the current file the file name is displayed at the top of the screen Files Save as Save all sections created in the current session and all sections in the current file in a New file e type in the file name in the File name edit box and click Files Exit Exit from the program If you have not saved sections defined in the current session the program will ask whether to save them before exiting Version 12 0 3 1 12 05 CROSEC 4 View menu Select the display options for the current section Dimensions Dimension names Stress diagram Center of gravity
21. t the two channels with a subsection having the correct length and a thickness 0 01 Example a Refer to 5 7 Section connect For connected back to back channels etc where the slenderness of the web must calculated using the combined web thickness define the web as a subsection with the double thickness and the flanges by four subsections connected to the corners of the web Example b To compute Define Version 12 0 5 3 12 05 CROSEC 5 2 New solid section Define a sections formed by a closed contour For example 130 Define the To create closed the solid contour section Define the section parameters Factor Enter a value gt 1 ar 1 far different material ar thickness A normal subsection has a factor 1 00 Enter values 1 00 for subsections with different thickness etc Add a regular subsection with the factor specified above add hole subsection will be deleted 1 Additional sub section Define a hole Cancel d Solid sections are created by defining a chain of connected contour segments the start of the current segment is the end of the previous segment the program automatically connects the end of the current segment to the start of the 1st segment e the end location of each segment is defining by moving the crosshair the screen or by typing in the coordinate the section is completed by double clicking the mouse For example
22. ulated as cold formed sections Two general types of sections may be defined Line sections Sections composed of a series of connected lines each with a specified thickness For example CH 5 Define 5 segments ES thickness and hend radius ta create the section le Ter Segments may be defined in any direction diagonal Several separate sections may be defined to form a section the additional sections are called subsections Each subsection may have a different thickness and bend radius The properties of a Line section may be copied to STRAP geometry Tables of cold formed sections may be added to the STRAP property tables the user first defines the dimensionless general shape and then enters the dimensions for each segment of every section in the table Different segments may be defined as equal only one of the dimensions must be entered Properties calculated include Shear center warping constant torsional moment of inertia and torsional flexural buckling constant Solid sections Sections formed by a closed contour For example 130 Define the create closed the solid contour section 320 245 Several separate contours may be defined to form a section the additional contours may be specified to be holes The properties may be copied to the STRAP geometry Properties calculated include Torsional moment of inertia Version 12 0 1 1 12 05 CROSEC
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