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BrassTruss-2.1.2-UserManual_Sept-2012

1. 3374000 SPANS 0 0 1 3374000 BRIDGE 1 1 0 0 TRUSS 5 2 1 1 1 1 UNKN 3374000 LOCATION 1 0 0 46 0 R04 3374000 YEARS 1936 00 0 3374000 STRESSES 33 0 33 0 2 70 0 3374000 COMMENTS BRIDGE OVER LITTLE WIND RIVER SAMPLE PROBLEM 1 3374000 WEARING SURFACE 1 25 ASPHALT 3374000 PAVEMENT 24 0 0 3374000 LEFT SIDEWALK 0 0 NONE NONE 0 0 3374000 RIGHT SIDEWALK 0 0 NONE NONE 0 0 3374000 CONCRETE DECK 5 5 8 FLAT 2 4 4 2 4 4 3374000 SECONDARY MEMBER LONGITUDINAL STRINGER 20 000 5 YES 3374000 ROLLED STRINGER FASCIA 17 90 7 492 0 520 3374000 ROLLED STRINGER INTERIOR 20 91 8 230 0 575 3374000 SECONDARY MEMBER TRANSVERSE FLOORBEAM 27 00 00 0 N 3374000 ROLLED FLOORBEAM END 33 0 11 50 0 805 3374000 ROLLED FLOORBEAM INTERMEDIATE 33 0 11 50 0 805 3374000 MAI EMBER PONY TRUSS RIVETED EITHER RIVETED 10 0 10 0 3374000 100001 CBXO 0 17 0 0 44 10 00 2 74 0 0 16 5 0 3374000 001002 CBXO 0 17 0 0 38 10 00 2 74 0 0 16 5 0 3374000 002003 CBXO 0 17 0 0 38 10 00 2 74 0 0 16 5 0 3374000 003004 CBXO 0 17 0 0 38 10 00 2 74 0 0 16 5 0 3374000 004005 CBXO 0 17 0 0 38 10 00 2 74 0 0 16 5 0 3374000 005006 CBXO 0 17
2. CHANNEL 1 If there is deterioration of the floorbeams enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder of the second command enter the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 2 Cover plates may not be used with a channel floorbeam If cover plates exist convert the section to an equivalent I Section 3 There are two ways the user can select a channel floorbeam from the sections library 1 The user may input a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values Ifa section is not found in the library the program tries to find a section within of the dimensions input If a section is not found an error message appears in the output 2 Ifa Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence of the combination of depth and weight Note The use of the letter W does not mean that a W
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4. EITHER INTERIOR or FASCIA if the next parameter is to be GIRDER No other combinations are acceptable Connecting Member Type Enter STRINGER FLOORBEAM TRUSS or GIRDER followed by the word TO No other words are acceptable If the Type is HINGE is not acceptable Location Enter INTERIOR or EXTERIOR if the next parameter is to be STRINGER and the Type is HINGE Enter END or INTERMEDIATE ifthe next parameter is to be FLOORBEAM Enter LEFT RIGHT EITHER or MIDDLE if the next parameter is to be TRUSS Enter LEFT RIGHT EITHER INTERIOR or FASCIA if the next parameter is to be GIRDER If the Type is HINGE both Location parameters must be the same No other combinations are acceptable If the Type is Hinge and the Connecting Member Type is STRINGER enter STRINGER Otherwise FLOORBEAM TRUSS or GIRDER may be entered If the Type is HINGE this parameter must be the same as Connecting Member Type No other combinations are acceptable Supporting Member Type 7 99 12 2 BRASS TRUSS EXAMPLE 1234567 FRAMED CONNECTION INTERMEDIATE FLOORBEAM TO EITHER TRUSS FIGURES NOTES Connection information is entered for informational purposes only BRASS TRUSS does not analyze the connections
5. Wyoming Department of Transportation Program for the Analysis and Rating of Truss Bridges BRASS TRUSS Version 2 1 2 User Manual February 2012 Copyright 1997 2012 Wyoming Department of Transportation Disclaimer Portions of the contents of this system were developed cooperatively by the New York Department of Transportation and the Wyoming Department of Transportation Bridge Program The New York Department of Transportation and the Wyoming Department of Transportation assume no liability or responsibility for and make no representations or warranties as to applicability or suitability of this computer system Anyone making use thereof or relying thereon assumes all responsibility and liability arising from such use or reliance AASHTO Specifications The Working Stress Analysis WSD portions of BRASS TRUSS is current with the AASHTO Specifications for Highway Bridges Sixteenth Edition 1996 with Interims Additional Information and Technical Assistance Wyoming Department of Transportation Bridge Program 5300 Bishop Boulevard Cheyenne WY 82009 3340 Telephone 307 777 4427 Fax 307 777 4279 Web Page http www dot state wy us wydot engineering technical programs bridge brass FTP Site ftp brass password wydot ftp dot state wy us Technical assistance may be obtained from Telephone 307 777 4489 E mail BRASSTechSupport wyo gov Web www wydot brass com Purchasing billin
6. 2 The floorbeams are encased have blast protection or are enclosed by jack arch construction 3 The concrete deck extends down to the bottom of the top flange 4 The grating is adequately attached to the top flange 5 The stringers are framed into or the top flange is seated on the floorbeam at 5 0 or less Use NO or N for ALL other conditions 8 00 9 2 BRASS TRUSS EXAMPLE 1234567 SECONDARY MEMBER TRANSVERSE FLOORBEAM 24 00 00 N FIGURES Average Wearing V Surface Thickness Girder Girder Span k t Span Truss or Girder Average Wearing Y Surface Thickness Ww Stringers Floorbeam u Average Wearing Surface Thickness Y L Fioorbeam E Girder Span lt ale Cantilever STRINGER FLOORBEAM SYSTEM Figure 1 Floorbeams are analyzed as Non Composite 8 00 9 3 Bottom of Slab ZERO HAUNCH Bottom of Slab ZERO HAUNCH Haunch Depth y Ss HAUNCH DETAILS Figure 2 Bottom of Slab BRASS TRUSS COMMAND NAME CONCRETE PROTECTION TRANSVERSE FLOORBEAM PURPOSE This command defines the concrete protection on the secondary member transverse floorbeam This command is optional 2 COMMAND PARAMETERS Flange Thickness If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from the bottom ofthe concrete to the top ofthe concrete that is
7. 7 99 12 3 BRASS TRUSS COMMAND NAME FRAMED DETAILS PURPOSE This command defines the components of framed connections This command is optional 13 COMMAND PARAMETERS Framing Angles Side Enter 1 or 2 as determined by the number of sides of the connecting member web with angles on them Framing Angles Width Enter the width in inches of the leg that is connected to the Outside Leg supporting member Figures Maximum 9 inches Minimum 1 0 inches Framing Angles Width Enter the width in inches of the leg that is against the Other Leg connecting member Maximum 9 inches Minimum 1 0 inches Framing Angles Thickness Enter the thickness in inches of the framing angles Maximum 1 125 inches Minimum 0 125 inches Connecting Member Number of Lines Enter the number of horizontal lines of connectors that pass through the web of the connecting member Connecting Member Enter the number of vertical rows of connectors either 1 or Number of Rows 2 that pass through the web of the connecting member il Connecting Member Fastener Enter the diameter of the fasteners that pass through the web of Diameter the connecting member in decimals of an inch Maximum 1 25 inches Minimum 0 625 inches Main Member Number of Lines n Enter the number of horizontal lines of connectors that pass through the web of the supporting member Main Member Enter the n
8. loss x 100 35 2 flanges Enter 35 under flange width Dimension loss 6 lt gt 6 lt gt 4 5 E 2 d 1 EDU loss x x 100 12 lase 6 2 flanges Enter 12 under flange width Dimension loss lt g gt loss x X 100 33 2 2 anges F Enter 33 under flange width Dimension loss 7 99 13 5 BRASS TRUSS 7 99 Deterioration Information Cont Channels and Rolled Beams WEBS 10 5 Original thickness 25 Average d remaining thickness a o _ 2 Average remaining thickness x loss 2 5 zr T x 100 47 Enter 47 under depth Area loss 13 6 BRASS TRUSS Deterioration Information Cont Channels and Rolled Beams WEBS Cont loss 06 x 100 24 25 original 35 e 19 measured Enter 24 under depth Area loss v gt 25 original loss 99 y 100 12 io 6 25 Enter 12 under depth Area loss v loss 2 x 100 43 J t5 25 6 25 amp 19 measured Enter 43 under depth Area loss 7 99 13 7 BRASS TRUSS 2576 loss 2596 loss 10 loss 59 10 loss 50 loss 1 1 10 loss 10 loss 10 loss 7 99 Deterioration Information Cont ANGLES Top A s No loss enter 0 25
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10. 260 BRASS TRUSS COMMAND DESCRIPTION CONCRETE PROTECTION LONGITUDINAL COMMAND NAME PURPOSE STRINGER This command defines the concrete protection on longitudinal stringer This command is optional 2 COMMAND PARAMETERS Flange Depth Web Thickness 8 00 If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from the bottom of the concrete to the top of the concrete that is covering the bottom flange If ENCASED is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from the bottom of the concrete slab to the bottom of the concrete that is covering the bottom flange See Figures If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from one side of the concrete covering the web to the other above the bottom flange If ENCASED is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from one side of the concrete to the other See Figures 8 12 BRASS TRUSS EXAMPLE 1234567 CONCRETE PROTECTION LONGITUDINAL STRINGER 12 2 FIGURES Web E 5 ENCASED BLAST STRINGER NOTES 8 00 8 13 BRASS TRUSS COMMAND NAME CHANNEL STRINGER This command defines channel stringers At least one type of PURPOSE STRINGER command is required This
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12. General Information for WEBS and PLATES Sometimes deterioration is so irregular that an exact measurement for loss cannot be made Make an estimate either by averaging a few measurements or by eye Average 3 5 Orig Deterioration Information Cont 7 99 13 2 BRASS TRUSS Channels and Rolled Beams FLANGE THICKNESS 0 1055 25 loss 0 ga loss 3 3 2 x 199 32 2 Average flanges ae Orig thk 5 Enter 32 under flange thickness Dimension loss 1 loss L 3 loss 2 1 width l Thickness c loss 3 2 x 100 33 spices 2 flanges Orig thk 3 Enter 33 under flange width 20 measured d Area loss 3 Enter 12 under flange 96 loss A2 1 100 12 50 2 flanges No loss thickness Dimension loss 38 Measured 7 99 13 3 BRASS TRUSS Deterioration Information Cont Channels and Rolled Beams FLANGE THICKNESS Cont Original thickness 5 Average thickness OR 2 9557 4 measured loss 2 7325 x 1 x 100 17 5 2 flanges 25 measured Enter 17 under flange thickness Dimension loss Original thickness 5 loss 22 x L L 100 12 5 2v 192 Enter 12 under flange thickness 29 measured Dimension loss 7 99 13 4 BRASS TRUSS Deterioration Information Cont Channels and Rolled Beams FLANGE WIDTH 2 75 1 5 or uen
13. O Thickness EYEBAR NOTES 7 99 10 30 BRASS TRUSS 7 99 10 31 BRASS TRUSS COMMAND NAME THREADED or THRHADED This command defines truss members composed of threaded bars This command is required when threaded bar members exist and may be repeated as often as needed to describe all the threaded members PURPOSE Use the command THREADED or oTHRHADED The or H are used to determine the Yield Strength for this member is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY Steel parameter on the STRESSES command 9 COMMAND PARAMETERS NOTE The following four parameters are placed BEFORE the command Member Beginning Enter the letter that corresponds to the vertical location of the Location Left or Top beginning of the truss member of this type U is for upper is for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change to for those members over 99 See page 10 2 for numbering convention DO NOT place a blank space between this parameter and the following parameter Member Panel Point Left or Enter the two digit number that corresponds to
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15. 18 inches Minimum 3 inches Channel Depth Enter the flange width in inches of the channel If the channel section is specified on the As Built plans enter the letter W followed by the weight per foot from these plans See Notes Maximum 4 2 inches Minimum 1 4 inches or Maximum 58 Ibs Minimum 4 1 Ibs Channel Flange Width or W Weight per Foot Side Plates Depth Enter the width in inches of any continuous side plates If there are none enter 0 Maximum Channel Depth Minimum 0 inches Side Plates Thickness Enter the total thickness in inches of all the continuous side plates attached to one channel If there are none enter 0 Maximum 1 inch Minimum 0 25 inches or 0 inches Bottom Plates Width Enter the width in inches of the continuous bottom plates or the bottom tie plates If lacing bars are used or there are no continuous bottom flange plates enter the out to out dimension ofthe channels Maximum 30 inches Minimum 5 inches or 0 inches Bottom Plates Thickness Enter the total thickness in inches of all the continuous bottom plates If there are no continuous bottom plates or if bottom lacing bars are used enter 0 Maximum 4 inches Minimum 0 18 inches or 0 inches Drop Distance From Datum If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a bl
16. 5 165 Enter the average flange thickness in inches ofthe rolled beam girder If the weight per foot was entered under BEAM FLANGE WIDTH enter 0 Maximum 5 inches Minimum 0 18 inches or 0 Enter the average width in inches of all the bottom flange plates Maximum 30 inches Minimum 6 inches or 0 Enter the thickness in inches of all the bottom flange plates Maximum 2 inches Minimum 0 375 inches or 0 11 14 BRASS TRUSS COMMAND PARAMETERS Cont Composite Enter N or Y to designate no or yes for composite action No other letters are acceptable FY Enter the Yield Strength in ksi of the flange plates if they are different than the values given on the STRESSES command If they are the same or there are no flange plates enter 0 7 99 11 15 BRASS TRUSS EXAMPLE 1234567 ROLLED 1 23 0 0 0 150 5 75 045 00 N 0 1234567 ROLLED 1 55 0 0 0 24 W104 0 0 0 N 0 WN 24x104 First 24x 104 section listed in sections library 1234567 ROLLED 1 55 0 0 024 9775 094200 N 0 W 24x104 Second 24x104 section listed in sections library FIGURES Width of Top Plates Top Plates Thickness SS gt lt WebThickness Depth of Beam Avg Flange Thickness Bottom Plates Thickness Width of Bottom Plates ROLLED BEAM GIRDER WITH PLATES 8 00 11 16 BRASS TRUSS Noms There are two ways the
17. ATYPE3 ATYPE 3S2 ATYPE3 3 the ATYPExxx trucks are the AASHTO rating vehicles as defined in the AASHTO Manual for Maintenance Inspection of Bridges 1983 Page 50 When the Wyoming trucks are used enter TRUCK CODE WYOMING 7 99 4 15 BRASS TRUSS COMMAND NAME STRESSES PURPOSE This command is used to define the allowable yield strength of the members and fastener diameter This command is required 6 COMMAND PARAMETERS Fy Steel Default See Notes Enter the steel yield strength in ksi If unknown or there are no structural steel members in the bridge superstructure enter 0 and a default value based on the year of original construction will be used For hybrid girders enter the yield strength of the web Fy Reinforcing Steel Enter the reinforcing steel yield strength in ksi If unknown or there is no reinforcing steel in the bridge superstructure enter 0 and a default value based on the year of original construction will be used Fpc Concrete Enter the concrete compressive strength in ksi If unknown or Default 3 3 ksi there is no concrete in the bridge superstructure enter 0 and a default value based on the year of original construction will be used Fy Timber Enter the timber bending strength in ksi If unknown or there Default 1 8 ksi are no wood members in the bridge superstructure enter 0 and a default value based on the year of original construction will be used This value will be m
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19. allows the user to input a maximum of 3 Main Members Only the last floorbeam entered in the Command Set will be rated All directions of LEFT and RIGHT or SPAN number AHEAD BACK etc must agree with the Bridge Inventory and Inspection data for orientation purposes 8 00 1 2 BRASS TRUSS The decision to submit more than one main member on a truss girder span of a bridge may be made by the engineer using the following criteria If both main members have the same configuration and have no rust deterioration then only one main member and required additional members are to be submitted for each span For cases where deterioration is present in one or both of the main members of this type of structure then both main members are to be submitted Two stringers one fascia and one interior and two floorbeams one end and one intermediate are expected in each data set however the fascia stringer and the end floorbeam are not rated They are shown in the output for information purposes only The only reason for any omissions would be for members that do not exist Dimension values used are the normal engineering units in the English System that are used to size the particular part of the bridge under consideration Roadway widths member lengths spans etc are understood to be in feet Roadway thickness member cross section data etc are understood to be in inches The section dimensions measured should be of origi
20. binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 10 23 BRASS TRUSS 400 BRASS TRUSS COMMAND NAME ISEC or ISEH This command defines truss members composed of plates configured as an I section angles and cover plates This command is required when welded plate members exist and may be repeated as often as needed to describe all the I section members PURPOSE Use the command ISEC or ISEH The or H are used to determine the Yield Strength for this member is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY Steel parameter on the STRESSES command 18 COMMAND PARAMETERS NOTE The following four parameters are placed BEFORE the command Member Beginning Enter the letter that corresponds to the vertical location of the Location Left or Top beginning of the truss member of this type U is for upper is for middle and L is for lower panel points If there are more than 99 panels change the U to change the to and change the L to for those members over 99 See Page 10 2 for numbering convention DO NOT place a blank space between this parameter and
21. from the support to the far end of the range Each span is to be treated separately Up to 30 ranges sections may be described with the last Range dimension equal to the span length Depth Enter the depth in inches of the timber girder See Figure for all dimensions Maximum 24 inches Minimum 6 inches Width Enter the width in inches ofthe timber girder Maximum 18 inches Minimum 4 inches 7 99 11 22 BRASS TRUSS EXAMPLE 1234567 TIMBER 1 60 18 8 5 FIGURES Width Depth TIMBER GIRDER 7 99 11 23 BRASS TRUSS 8 00 11 24 BRASS TRUSS 12 CODING INSTRUCTIONS FOR CONNECTIONS 7 99 12 1 BRASS TRUSS COMMAND NAME CONNECTION PURPOSE This command defines the type and location of connections This command is optional S COMMAND PARAMETERS NOTE The following parameter is placed BEFORE the command Enter the word FRAMED HANGER or HINGE to describe the type of connection to be rated No other words are acceptable Insert a space followed by the command after this parameter Place a space after the command as usual See Example Type Location Enter INTERIOR or EXTERIOR if the next parameter is to be STRINGER Enter END or INTERMEDIATE if the next parameter is to be FLOORBEAM Enter LEFT RIGHT EITHER or MIDDLE if the next parameter is to be TRUSS Enter LEFT RIGHT
22. the program tries to find a section within Ve of the dimensions input If a section is not found an error message appears in the output 2 If a Channel is specified on the Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 3 and input the letter W followed by the weight per foot in Parameter 4 The program will search the library for the first occurrence of the combination of depth and weight Note The use of the letter W does not mean that a W section will be selected The letter W is merely a flag to tell the program to search for a rolled channel section If a section is not found an error message appears in the output The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and 1s not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 11 21 BRASS TRUSS COMMAND NAME TIMBER PURPOSE This command is used to describe a timber girder At least one type of girder command is required 4 COMMAND PARAMETERS Span No Enter the span number of the span being rated Range Range is defined as a portion or length of a span in feet for which there are no changes in any elements of the girder The position of the range within the span is defined by giving the distance range
23. 0 inches Number of Stringers Enter the number of stringers that support the roadway Compression Flange Restraint Enter YES or NO Y or N Nothing else is acceptable Use YES or Y if any of the following conditions exists 1 The presence of shear connectors 2 The stringers are encased have blast protection or are enclosed by jack arch construction See Figure 2 3 The concrete deck extends down to the bottom of the top flange zero haunch see Figure 1 4 The sleepers or the steel grating is adequately attached to the top flange Use NO or N for ALL other conditions 7 99 8 2 BRASS TRUSS EXAMPLE 1234567 SECONDARY MEMBER LONGITUDINAL STRINGER 200 0 5 YES FIGURES Bottom of Sce ZERO HAUNCH E ZERO HAUNCH Haunch Depth T Zi HAUNCH DETAILS HAUNCH DEPTH Figure 1 NOTES 7 99 ENCASED BLAST STRINGER Figure 2 BRASS TRUSS COMMAND NAME LEFT SIDEWALK STRINGER PURPOSE This command defines the left sidewalk stringer on a bridge This command is optional S COMMAND PARAMETERS Type of Supporting Members Enter TIMBER CHANNEL or ROLLED to describe the kind of members supporting the left sidewalk No other words are acceptable See Figures Member Depth Enter the depth in inches of the
24. 0001 00 9081 08 in this example do not enter them as truss members If there are tie members from the bottom of these posts to the bottom chord LOOLO1 LO7L08 in this example do not enter them as truss members Note the composition of the posts and ties in the COMMENTS command The program output will list the truss panel types by number which the user has input This can help visualize the computer model especially when debugging a run These truss panel types are shown on Page 10 4 If a welded box section double element web is encountered as a Truss Member use the or ABH command and enter a 0 zero in all the parameters that pertain to the angles 11 01 10 1 BRASS TRUSS 001 002 003 004 101 102 103 104 100 U00 U01 U02 U03 U04 005 006 000 001 002 U03 004 005 U06 101 102 103 104 105 101 102 103 104 105 3 100 106 uoo 001 002 003 004 005 006 007 U08 001 902 03 U04 5 906 Lo1 102 103 104 LOS jog 17 Loo 101 102 Los L04 1065 1 A L07 108 001 002 003 004 005 006 007 008 009 010 U11 LOO 06 112 101 102 103 104 105 106 107 108 109 110 L11 100 112 TYPICAL TRUSSES 7 99 10 2 BRASS TRUSS 001 002 003 004 005 006 007 008 009 U10 U11 DEO XD i LO1 102 103 104 105 106 107 108 109 110 111 9 o e 120 L21 L22 123 124 106 L18 L19 U03 g4 U05 001 007 Datum Line Datum Line 000 908
25. 12 84 8 6 8 14 6 6 4 14 10 16 10 12 10 28 10 24 10 20 10 32 6 8 5 2 4 12 BRASS TRUSS 3 TYPICAL COMMAND SETS 3 1 GIRDER FLOORBEAM STRINGER BRIDGES RATINGSG EXE Command Name SPANS DATE BRIDGE LOCATION DEBUG YEARS TRUCK CODE Not currently operational STRESSES COMMENTS WEARING SURFACE PAVEMENT LEFT SIDEWALK RIGHT SIDEWALK MEDIAN MEMBER LAYOUT RAILWAY TRACK LAYOUT UTILITIES CONCRETE DECK GRATING DECK TIMBER DECK STEEL SLEEPERS TIMBER SLEEPERS SECONDARY MEMBER LONGITUDINAL STRINGER LEFT SIDEWALK STRINGER RIGHT SIDEWALK STRINGER CONCRETE PROTECTION LONGITUDINAL STRINGER CHANNEL STRINGER FASCIA OR INTERIOR ROLLED STRINGER FASCIA OR INTERIOR TIMBER STRINGER FASCIA OR INTERIOR SECONDARY MEMBER TRANSVERSE FLOORBEAM CONCRETE PROTECTION TRANSVERSE FLOORBEAM CHANNEL FLOORBEAM END OR INTERMEDIATE ROLLED FLOORBEAM END OR INTERMEDIATE ISEC FLOORBEAM END OR INTERMEDIATE MAIN MEMBER GIRDER zx MAIN MEMBER CONCRETE PROTECTION RIVETED ROLLED WELDED CHANNEL TIMBER CONNECTION FRAMED HANGER HINGE Usage Required Optional Required Required Optional Required Optional Required Optional Required Required Required Required Optional Optional Optional Optional Optional Req d Optional Optional Required Optional Optional Optional Req d Required Optional Req d Required Optional Req d Optional Option
26. Enter under width Bottom s 12 of horizontal leg 2 Angles Dimension loss Other values 0 25 Enter under width Top s 12 of horizontal leg 2 Angles Dimension loss Enter under width Bottom amp s 00 10 _ 30 of horizontal leg 2 Angles Dimension loss Other values 0 Note For Floorbeams Only 50 10 10 Top A s 35 2 Angles Bottom a Os je 2 Angles loss 35 10 _ 22 596 Enter under width 2 i Area loss Other values 0 13 8 BRASS TRUSS Deterioration Information Cont Box Section WEBS 1 Enter under depth 2 0 109 loss 10 2 ap 19 10 Dimension loss 1 100 19 Enter under depth 5 10 5 10 2 Webs Dimension loss k 5 Original 10 5 4 lt 2 Measured loss 33 1 100 9 Enter under thickness 5 10 2 Dimension loss Depth loss 0 7 99 13 9 BRASS TRUSS 7 99 13 10 BRASS TRUSS 14 SAMPLE PROBLEM The sample problem is for rating an 80 foot simple span pony truss See Bridge Plans on Pages 14 2 and 14 3 This example shows the pertinent information from the plans that is needed to code the data The live loads applied are HS20 truck and lane H20 truck and lane Type 3 Type 383 and Type 3 3 as described in AASHTO Manual for Maintenance Inspection of Bridges 1983 Page 50 The following data set would be created
27. I SECTION I SECTION TOP WOR S W O TOP 1 I SECTION W O W O WEB W O BOTTOM amp BOTTOM S BUT LACING PLATE AND ANGLE ORIENTATION Figure 1 Width of Top Flange Plates Top Plate Thickness i A 94 Width Top Angle FINI Horiz Leg Angle A Web Plates Thickness n z gt k Web 5 Ange y Thickness t Thickness Width Bottom Angle go Horiz Les _ E Bottom Plates Thickness Width of Bottom Flange Plates lt gt I SECTION TRUSS MEMBER Figure 2 NOTES 7 99 10 27 BRASS TRUSS BRASS TRUSS COMMAND NAME PURPOSE NOTE The following four parameters are placed BEFORE the command Member Beginning Location Left or Top Member Panel Point Left or Top Member End Location Right or Bottom Member Panel Point Right or Bottom Continued 11 01 COMMAND DESCRIPTION EYEBAR or EYEHAR This command defines truss members composed of eyebars This command is required when eyebar members exist and may be repeated as often as needed to describe all the eyebar members Use the command EYEBAR or EYEHAR The or H are used to determine the Yield Strength for this member B is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the
28. In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in the library See the example above Note A zero must be entered in Parameter 7 when an AISC shape is entered in Parameters 5 and 6 The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 11 17 BRASS TRUSS COMMAND NAME WELDED PURPOSE This command defines the components ofa welded plate girder At least one girder type command is required s COMMAND PARAMETERS Span No No Enter the span number of the span Enter the span number of the span being rated rated Range Range is defined as a portion or length of a span in feet for which there are no changes in any elements of the girder The position of the range within the span is defined by giving the distance range from the support to the far end of the range In the case of a linear or parabolic variation in the web depth a range is the portion of the span for which the slope or parabolic constant remains constant Each span is to be treated separately Up to 30 ranges may be described with the last Range dimension equal to the span length Top Plates Width Enter the average width in inches of all the top plates Se
29. LITTLE WIND RIVER FIGURES NOTES 7 99 4 19 BRASS TRUSS 7 99 4 20 BRASS TRUSS 5 CODING INSTRUCTIONS FOR ROADWAY DETAILS 7 99 5 1 BRASS TRUSS 9 BRASS TRUSS COMMAND NAME WEARING SURFACE PURPOSE This command is used to define the wearing surface thickness and type This command is required 2 COMMAND PARAMETERS Wearing Surface Thickness Enter the average distance in inches from the roadway to the top of the structural deck If the wearing surface thickness cannot be determined omit the entire command See Figure Maximum 12 inches Minimum 0 inches Wearing Surface Type Enter CONCRETE ASPHALT TIMBER or NONE No other words are acceptable If the deck is Open Steel Grating enter NONE If more than one type of overlay material is used enter only one type with an equivalent thickness to obtain the proper unit weight 7 99 5 2 BRASS TRUSS EXAMPLE 1234567 WEARING SURFACE 1 25 ASPHALT FIGURES Average Wearing Surface Thickness o Wearing Surface Weight Roadway Width x Wearing Surface Thickness x Unit Weight MATERIAL UNIT WEIGHT Concrete 150 Ibs per cubic foot Timber 50 Ibs per cubic foot Asphalt 144 Ibs per cubic foot 7 99 5 3 BRASS TRUSS COMMAND NAME PAVEMENT PURPOSE This command defines the pavement width This command is required 2 COMMAND PARAMETERS Left Pavement Width Enter the distance i
30. Minimum 1 0 inches or 0 Enter the thickness in inches of the bottom angle If there are no angles enter 0 Maximum 1 125 inches Minimum 0 125 inches or 0 Enter the width in inches of the continuous bottom plates or bottom tie plates If lacing bars are used and there are no continuous top flange plates enter the out to out dimension of the angles Maximum 50 inches Minimum 5 inches or 0 Enter the total thickness in inches ofall the continuous bottom plates If there are no continuous bottom plates or if bottom lacing bars are used enter 0 Maximum 4 inches Minimum 0 18 inches or 0 If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a blank space and a minus sign i e 5 If the bottom of the vertical is above the datum line use a plus symbol i e 5 10 18 BRASS TRUSS EXAMPLE 1234567 102002 ABXI 9 0 80 0 30 3300310000000 FIGURES ANGLE BOX WITH ANGLE BOX WITH W O P ANGLES FACED IN ANGLES FACED OUT BUT LACING ABXO ABXI ABXO ABXI L NEXU W O BOTTOMR W O TOP amp BOTTOM W O WEB W O TOP OR BUT LACING S BUT LACING BOTTOM ANGLE FLANGE ORIENTATION Figure 1 Width of Top Plates Top Plates N Thickness 1 1 E 5 gt _ Top Angles Ne Angle Thickness 5 Web
31. Number of Members parameter Note the actual conditions in the Comments 8 00 8 8 BRASS TRUSS EXAMPLE 1234567 RIGHT SIDEWALK STRINGER ROLLED 18 W55 0 3 WN 18x55 First 18x55 section listed in sections library 1234567 RIGHT SIDEWALK STRINGER ROLLED 18 6 000 0 691 3 W 18x55 Second 18x55 section listed in sections library 1234567 RIGHT SIDEWALK STRINGER CHANNEL 9 W20 0 2 FIGURES Sidewalk Width Sidewalk gt Thickness E Wearing Surface Sidewalk Stringers Floor beam Truss Girder Sidewalk Width 7 Wearing Surface Sidewalk Thickness E Sidewalk Stringers Sidewalk Bracket Floorbeam Stringer Truss Girder SIDEWALK STRINGERS Right Sidewalk 8 00 8 9 BRASS TRUSS vores There are two ways the user can select a stringer from the sections library 1 The user may input a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within 1 of the dimensions input If a section is not found an error message appears in the output 2 If a W Section or Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Con
32. PONY TRUSS TRUSS BRIDGES NOTES 1 Forriveted sections the net section is computed by deducting the number of holes for each leg an angle can have The same number of holes are deducted from the plates that attach to those angles This applies to axial loaded members only For riveted truss sections the output has a table numbered 12345 which shows the number of holes deducted The numbers 12345 refer to top plate web bottom plate top angles and bottom angles respectively 11 01 10 7 BRASS TRUSS COMMAND NAME CONTINUOUS TRUSS SUPPORTS This command defines the truss support and hinge locations PURPOSE This command is optional This command may be repeated to define up to fourteen support points Only four hinge points are allowed See Notes 10 COMMAND PARAMETERS Panel Point Location Support 1 For continuous trusses enter the panel point location for support 1 For simple trusses omit this command Panel Point Location Support 2 For continuous trusses enter the panel point location for support 2 For simple trusses omit this command Panel Point Location For continuous trusses enter the panel point location for support Support 3 3 For simple trusses omit this command Panel Point Location For continuous trusses enter the panel point location for support Support 4 4 For simple trusses omit this command Panel Point Location Support 5 For continuous trusses e
33. Resistance Factor Design may be specified Member capacities are designed based on applied truck load soil fill self weight and water pressure Standard AASHTO and user defined truck loadings can be specified Output generated by the program includes culvert geometry moments shears and axial forces at tenth points stresses required area of reinforcement steel design table splice length weights and volumes of steel and concrete and influence ordinates Critical design moments shears and axial forces for each member are summarized BRASS SPLICE Performs the design of field splices for rolled beam or welded plate steel girders Design criteria are in compliance with the AASHTO Load Factor Design Standard Specifications and WYDOT design practice BRASS POLETM Performs a working stress analysis of cantilever sign luminaire and signal support structures Round or polygonal steel poles may be analyzed according to the AASHTO Standard Specifications BRASS DISTTM Performs a finite strip element analysis to determine the factor for wheel load distribution for any axle spacing or width and any tire configuration of a truck placed at any position on the bridge deck Standard trucks may also be used NOTE AASHTO formulas are based on empirical data and are applicable to six foot axle widths BRASS DIST will also give results for a simple beam deck to girder analysis for dead loads BRASS PAD Performs analysis and design of
34. analysis and load rating of simple or continuous truss or girder bridges with floorbeams and stringers It generates properties computes truss coordinates and weights analyzes each simple or continuous span for dead load and live load moments and shears and determines the structural rating for each type of member submitted This component was originally developed by the New York Department of Transportation The following is a list of items describing some ofthe internal procedures and assumptions used in BRASS TRUSS 1 effective column length factor is 0 875 for pinned truss member ends and 0 75 for riveted welded or bolted ends These values are from AASHTO Standard Specifications for Highway Bridges 1996 Appendix C Page 635 They are set in Subroutine RDGTRS 2 account for the weight of miscellaneous hardware and minor structural items such as gusset plates BRASS TRUSSTM adds 70 percent more weight per foot to each truss member not including stringers or floorbeams This is set in Subroutine RDGTRS 3 To calculate the dead load of the truss to apply to a panel point BRASS TRUSS adds one half of the panel dead load on each side of the panel point 4 live loads automatically applied by BRASS TRUSS are HS20 truck and lane H20 truck and lane 3 Type 353 and 3 3 as described in AASHTO Manual for Maintenance Inspection of Bridges 1983 Page 50 A future enhancement will allow live
35. command Enter the letter that corresponds to the vertical location of the beginning of the truss member of this type U is for upper 15 for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change the L to for those members over 99 See Page 10 2 for numbering convention DO NOT place a blank space between this parameter and the following parameter Member Beginning Location Left or Top Member Panel Point Enter the two digit number that corresponds to the horizontal Left or Top location of the beginning of the truss member of this type Numbers less than ten start with 0 DO NOT place a blank space between this parameter and the following parameter Member End Location Enter the letter that corresponds to the vertical location of the Right or Bottom end of the truss member of this type U is for upper is for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change the to for those members over 99 DO NOT place a blank space between this parameter and the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Right or Bottom location of the end of the truss member of this type Numbers less than ten start w
36. command maybe repeated to define a fascia and interior channel stringer 3 COMMAND PARAMETERS Location Enter the location ofthe stringer being defined Only the words FASCIA or INTERIOR are allowed For deterioration of the section enter the word RUST See Note 1 Enter the depth in inches of the channel stringer See Note 2 Maximum 18 inches Minimum 3 inches Flange Width Enter the flange width in inches ofthe channel stringer If the or channel section is specified on the As Built plans enter the W Weight per Foot letter W followed by the weight per foot from these plans See Note 2 Maximum 4 2 inches Minimum 1 4 inches or Maximum 58 lbs Minimum 4 1 165 8 00 8 14 BRASS TRUSS EXAMPLE 1234567 CHANNEL STRINGER FASCIA 15 3 716 1234567 CHANNEL STRINGER INTERIOR 12 W30 FIGURES Flange Width NN o v CHANNEL NOTES 1 Ifthere is deterioration of any stringers enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder of the second command enter the percentage of area loss fora particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 2 There are two ways the user can select a channel stringer from the sections library 1 The user may input
37. cover plates If none exist enter 0 Maximum 3 inches Minimum 0 5 inches or 0 If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a blank space and a minus sign i e 5 Ifthe bottom of the vertical is above the datum line use a plus symbol i e 5 Drop Distance From Datum 11 01 10 21 BRASS TRUSS EXAMPLE 1234567101001 ROLLED 8 0 0 0 21 8 355 0 835 0 0 1234567 102103 ROLLED 0 0 0 24 W104 0 16 1 08 WN 24 104 First 24x104 section listed in sections library 1234567 102103 ROLLED 0 0 0 24 9 775 0 942 16 1 08 W 24x104 Second 24x104 section listed in sections library N ROLLED BEAM ROLLED BEAM WITH amp BOTTOM R S WITHOUT TOP ROLLED BEAM ROLLED BEAM WITHOUT BOTTOM FIGURES BEAM AND PLATE ORIENTATION Figure 2 Width of Top Plates Top Plates Thickness gt Web Thickness Depth of Beam Average Flange Thickness Plates Thickness Width of Bottom Plates R ROLLED BEAM TRUSS MEMBER Figure 2 8 00 10 22 BRASS TRUSS NOTES There are two ways the user can select a rolled truss member from the sections library 1 The user may input a section depth and flange width in Parameters 8 and 9 The program will search the library for the first occurrence of this combination o
38. designation to indicate a NEW shape In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in the library See the example above Note A zero must be entered in Parameter 4 when an AISC shape is entered in Parameters 2 and 3 The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 8 17 BRASS TRUSS COMMAND NAME TIMBER STRINGER This command defines timber stringers At least one type of PURPOSE STRINGER command is required This command may be repeated to define a fascia and interior timber stringer 4 COMMAND PARAMETERS Location Enter the location ofthe stringer being defined Only the words FASCIA or INTERIOR are allowed For deterioration of the section enter the word ROT See Notes Enter the depth in inches ofthe timber stringer Maximum 18 inches Minimum 6 inches Enter the width in inches of the timber stringer Maximum 12 inches Minimum 2 inches Stress Grade If the stress grade was not 0 on the STRESSES command and or the stress grade for the timber stringers is different than the one given on the STRESSES command enter it here in ksi If the two values are equal or the value for the timber stringers is unkn
39. inverted U bolt hanger connections enter the sidewalk width from the curb line to the end ofthe floorbeam and the floorbeam cantilever dimension from the hanger to the end of the floorbeam Maximum 35 feet Minimum 0 feet Left Floorbeam Cantilever Length Right Floorbeam Cantilever Enter the distance in feet from the center of the member Length supporting the floorbeam to the outer extremity of the floorbeam for DECK Type Bridges For TRUSSES with inverted U bolt hanger connections enter the sidewalk width from the curb line to the end ofthe floorbeam and the floorbeam cantilever dimension from the hanger to the end of the floorbeam Maximum 35 feet Minimum 0 feet Haunch Depth Ifthe space between the bottom ofthe concrete deck and the top of the floorbeam flange is filled with concrete enter this distance in inches If the bottom of the concrete deck is flush with the top of the floorbeam flange or this space is not filled with concrete enter 0 If non composite enter 0 See Figure 2 Maximum 9 inches Minimum 0 inches Floorbeam Skew Angle Enter the angle in degrees between the centerline of the floorbeam and a line perpendicular to the roadway centerline Maximum 75 Minimum 0 Compression Flange Restraint Enter YES or or N Nothing else is acceptable Use YES or Y if any of the following conditions exist 1 The presence of shear connectors
40. loads to be selected from the truck library TRUCK BLB This library may be modified using the UTIL EXE utility program as described in Chapter 15 THIS CAPABILITY IS NOT YET OPERATIONAL 5 members except truss chords the allowable stress for inventory is the input stress multiplied by 0 55 and for operating 0 75 6 The program does not include any dead load for handrails curbs or lateral bracing other than the addition of 70 to all truss member weights 7 BRASS TRUSSTM rounds rating tonnages down to the nearest whole ton 8 BRASS TRUSS only rates an interior stringer If more than one intermediate floorbeam is input BRASS TRUSS will only rate the last floorbeam entered in the Command Set 9 BRASS TRUSSTM uses input timber dimensions 10 The length of stringers must be equal to or a multiple of the panel length 10 percent 11 BRASS TRUSSTM will only rate at mid span for simple span girder floorbeam systems 12 Floorbeams are rated at mid span and are assumed to be simple spans 7 99 1 1 BRASS TRUSS 13 BRASS TRUSSTM considers the wearing surface on a concrete deck a superimposed dead load and divides it equally to all stringers The weight per foot ofthe concrete deck applied to a stringer is the stringer spacing multiplied by the deck depth in feet times 0 150 The following types of structures may be rated by this component 1 Steel Girders Simple or up to 8 spans continuous a Deck Girders
41. lt a Thickness C Web Plates Angle Thickness RU Bottom Angles I Bottom Plates Thickness 2 Width of Bottom Plates 5 ANGLE BOX TRUSS MEMBER Figure 2 NOTES 7 99 10 19 BRASS TRUSS COMMAND NAME ROLLED or ROLHED This command defines truss members composed of a rolled beam and plates This command is required when rolled beam members exist and may be repeated as often as needed to describe all the rolled beam members PURPOSE Use the command ROLLED or ROLHED The L or are used to determine the Yield Strength for this member L is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY Steel parameter on the STRESSES command 13 COMMAND PARAMETERS NOTE The following four parameters are placed BEFORE the command Member Beginning Location Enter the letter that corresponds to the vertical location of the Left or Top beginning of the truss member of this type U is for upper 15 for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change to for those members over 99 See Page 10 2 for numbering convention DO NOT place a blank spac
42. or Steel Sleeper lt Stringers WOOD DECK WITH SLEEPERS Ifthere is any deterioration of any sleepers enter one command fully as normal Then repeat this command and enter the word in the first parameter For the remainder of the second command enter the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 7 99 7 13 BRASS TRUSS 7 99 7 14 BRASS TRUSS 8 CODING INSTRUCTIONS FOR SECONDARY MEMBERS STRINGERS 7 99 8 1 BRASS TRUSS COMMAND NAME SECONDARY MEMBER LONGITUDINAL STRINGER This command defines the secondary member longitudinal PURPOSE stringers on the bridge This command is required when stringers are present S COMMAND PARAMETERS Span Enter the center to center distance in feet of the members supporting the stringers Maximum 50 feet Minimum 3 feet NumberofContinuousSpans Enter the number of spans through which the stringers are acting continuously Enter 0 for a simple span Maximum 8 spans Minimum 0 spans 1 is not acceptable Haunch Depth Enter the average distance in inches from the top of the stringer flange to the bottom of the concrete deck If the top of the stringer top flange is at or above the bottom of the slab enter 0 Ifnon composite enter 0 See Figure 1 Maximum 6 inches Minimum
43. space followed by the command after this parameter Place a space after this command as usual See Example 10 28 BRASS TRUSS COMMAND PARAMETERS Cont Member Length Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member 15 the same as these dimensions or the member is a diagonal enter 0 Number of Elements Enter the number of elements that make up the member Maximum 9 Minimum 1 Eyebar Width Enter the largest dimension in inches of the individual element cross section See Figures for all dimensions Maximum 8 inches Minimum 0 50 inches Eyebar Thickness Enter the smallest dimension in inches of the individual element cross section Maximum 2 inches Minimum 0 25 inches NOTE For loop bars provide the dimensions for 80 of the individual bar area Drop Distance From Datum If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a blank space and a minus sign i e 5 Ifthe bottom of the vertical is above the datum line use a plus symbol i e 5 11 01 10 29 BRASS TRUSS EXAMPLE 1234567 101002 EYEBAR 0 2 3 0 1 0 FIGURES lt Width
44. steel or fabric reinforced elastomeric bearing pads according to the AASHTO Standard or LRFD Specifications 5 05 1 6 BRASS TRUSS 25 COMMAND DESCRIPTION INDEX In Alphabetical Order Command Name Command No Page No BRIDGE d ada Riek 30 4 6 COMMEN IS hs eed a a e alia ete eh 80 4 18 CONCRETE PROTECTION Longitudinal Stringer 260 8 8 Main Member Girder 450 11 8 Transverse Floorbeam 310 9 4 CONNECTIONS Connection za cec hoe te e x edu 510 12 2 Framed D tails a Imre 520 12 4 Hanger Details 4 2o eve ebay oe AIRES 530 12 8 Hinge Details ecu oy steer RAUS 540 12 10 DATES secat rur 20 4 4 DECK Concrete vence a oh ea EAS 180 7 2 290 7 6 28 ar ccs re petes es 200 7 8 DETERIORATION 13 1 FLOORBEAMS Channel ge icin Gade Rae Waele seams Sad vau 320 9 6 SEE 340 9 10 R ll ed ye 330 9 8 GIRDERS Channel decedent Mo rte 490 11 20 R veted We ud a EL 460 11 10 ROWE etsi REI patr e Dien 470 11 14 Timb6t aet ed er eR enis 500 11 22 Welded eR od ove 480 11 18 LOCATION rere IA oM 40 4 10 MAIN MEMBERS Girder ete a ree Pese de 430 11 2 sce veo Ue bane ta 440 11 6 RSS eor zd io vetas l
45. the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 2 There are two ways the user can select a rolled stringer from the sections library 1 The user may input a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within Vs of the dimensions input section is not found an error message appears in the output 2 If a W section is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence ofthe combination of depth and weight Ifa section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W WN 1 W24X76 and WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape
46. the span to be rated and data to describe PURPOSE the location of the structure This command is required See Notes 6 COMMAND PARAMETERS Span Number Enter the span number being rated For continuous structures use the first span of the continuous unit When a ramp span is being rated enter the span number of the main bridge span where the ramp span joins onto or separates from the main bridge Ramp Letter Enter the ramp letter If no ramps exist enter 0 Ramp Span Number If ramp letter is 0 enter 0 here Otherwise enter the span number for the ramp span that is being rated District amp County Number Enter the district number in the first digit of this two digit numeric parameter and the county number in the next digit Only two digits are allowed Route Number Enter the Interstate U S State County or City Highway numbers and letter if present for bridges carrying highway traffic Enter the railroad initials UPRR BNRR etc for bridges carrying railway traffic If none of these are available enter 0 Only four letters and or digits are allowed hyphens are not allowed Consultant Code Enter the consultant code This must be a Letter A Z followed by a number 00 99 8 00 4 10 BRASS TRUSS EXAMPLE 1234567 LOCATION 1 0 0 46 0 R04 FIGURES Each LOCATION command must correspond to a BRIDGE record previously defined If there are 3 BRIDGE records there must be 3 LOCATIONS In this man
47. two trusses that are different enter LEFT or RIGHT depending on which one the data is supplied for If the two trusses are the same enter EITHER If there are more than two trusses enter MIDDLE if data is supplied for other than the outside trusses Only LEFT RIGHT EITHER or MIDDLE are acceptable Enter PINNED RIVETED WELDED or BOLTED as determined by the type of end connections used to join the truss members together No other words are acceptable Type of Connection Panel Height Enter the distance in feet between the centerlines of the top and bottom chords of the truss only if the chords are parallel Otherwise enter 0 Maximum 150 feet Panel Width Enter the width in feet of any panels that have the same width If all the panel widths vary enter 0 Maximum 50 feet If this is a combination of a Deck Pony and or Thru Type truss see Figure 10 on Page 10 3 enter 0 0 COMB Be sure to enter a blank space on each side of the zero Combination Truss Code 11 01 10 6 BRASS TRUSS EXAMPLE 1234567 MAIN MEMBER PONY TRUSS RIVETED EITHER RIVETED 10 0 10 0 FIGURES EX f IC Jc i cu a XT JC IC jt JE JE DECK TRUSS THRU TRUSS
48. 0 0 38 10 00 2 74 0 0 16 5 0 3374000 006007 CBXO 0 17 0 0 38 10 00 2 74 0 0 16 5 0 3374000 U07L08 CBXO 0 17 0 0 44 10 00 2 74 0 0 16 5 0 3374000 100101 CBXO 0 16 5 0 10 00 2 74 0 0 16 5 0 3374000 L01L02 CBXO 0 16 5 0 10 00 2 74 0 0 16 5 0 3374000 L06L07 CBXO 0 16 5 0 10 00 2 74 0 0 16 5 0 3374000 107108 CBXO 0 16 5 0 10 00 2 74 0 0 16 5 0 3374000 L02L03 CBXO 0 16 5 0 10 00 3 03 00 16 5 0 3374000 L03L04 CBXO 0 16 5 0 10 00 3 03 00 16 5 0 3374000 L04L05 CBXO 0 16 5 0 10 00 3 03 00 16 5 0 3374000 L05L06 CBXO 0 16 5 0 10 00 3 03 00 16 5 0 3374000 L02U02 ABXI 9 0 8 00 3 0 3 0 0 31 0000000 3374000 104004 ABXI 10 0 8 0 0 3 0 3 0 0 31 0000000 3374000 106006 9 0 8 0 0 3 0 3 0 0 31 0 0 0 0 0 0 0 3374000 101001 ROLLED 8 0 0 0 9 750 7 964 433 0 0 3374000 001102 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 102003 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 103003 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 003104 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 104005 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 LO5U05 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 005106 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 LO6U07 ROLLED 0 0 0 9 750 7 964 433 0 0 3374000 LO7U07 ROLLED 8 0 0 0 9 750 7 964 433 0 0 3374000 FRAMED CONNECTION INTERIOR STRINGER TO INTERMEDIATE FLOORBEAM 3374000 FRAMED DETAILS 2 0 4 0 6 0 0 44 5 0 2 0 0 75 5 0 2 0 0 75 3 0 2 5 0 25 3374000 FRAMED CONNECTION INTERMEDIATE FLOORBEAM TO EITHER TRUSS 3374000 FRAMED DETAILS 2 0 4 0 8 0 0 50
49. 0 20 N 2 0 FIGURES i zi zd THRU GIRDER Figure 9 of Sieh EERO DE if Slak ZERO HAUMCH HiauRGh Lapi Hatan of Diek FRAGNUTM pii PAR Figura 2 Continued 7 99 11 4 BRASS TRUSS FIGURES Cont RELA SED BRAZT nessed Hast Cenfigureiion Figore 3 NOTES 1 Forriveted sections the net section is computed by deducting the number of holes for each leg an angle can have The same number of holes are deducted from the plates that attach to those angles This applies to axial loaded members only 7 99 11 5 BRASS TRUSS 440 BRASS TRUSS COMMAND NAME HINGE PURPOSE This command defines the location up to two hinges per span This command is optional and may be repeated for additional spans 3 COMMAND PARAMETERS Span Number Enter the span number where the hinge is located Distance from Beginning Span to Hinge 1 Enter the distance in feet to the first hinge from the beginning of the span Distance from Beginning Span to Hinge 72 Enter the distance in feet to the second hinge from the beginning of the span If there is only one hinge in this span enter 0 7 99 11 6 BRASS TRUSS EXAMPLE 1234567 HINGE 2 15 85 FIGURES 7 99 117 BRASS TRUSS COMMAND NAME PURPOSE Flange Depth Encased or Thickness Blast Web Thickness 7 99 MAIN MEMBER CONCRETE PROTECTION T
50. 103 104 105 a TYPICAL TRUSSES 7 99 10 3 BRASS TRUSS Upper Chord S Vertical Floorbeam Lower Chord Diagonal Stringers Flooring TRUSS NOMENCLATURE e NOTE SOLID LINE REQUIRED MEMBERS DASHED LINE OPTIONAL MEMBERS 43 TRUSS PANEL TYPES 7 99 10 4 BRASS TRUSS 10 2 GENERAL DETERIORATION INFORMATION FOR TRUSS MEMBERS Ifthere is any deterioration of any Truss Member fill out one command fully as normal Then repeat this command and fill in the same data as on the preceding command up through and including the field heading or I or O if present Under the heading LENGTH enter the word RUST For the remainder ofthe second command see the detailed explanation ofthe information required for deterioration under the section DETERIORATION INFORMATION Page 13 1 7 99 10 5 BRASS TRUSS COMMAND NAME MAIN MEMBER This command defines the type of truss and panel dimensions PURPOSE This command is required for trusses 8 COMMAND PARAMETERS Truss Type Enter DECK THRU or PONY No other words are acceptable See Figures Truss Main Member Enter TRUSS No other words are acceptable Truss Member Construction Enter RIVETED or WELDED as determined by the type of construction of the individual truss members No other words are acceptable See Note 1 Truss Orientation If there are
51. 2 and 3 The program will search the library for the first occurance ofthis combination of values If a section is not found in the library the program tries to find a section within of the dimensions input If a section is not found an error message appears in the output 2 Ifa W Section or Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter3 The program will search the library for the first occurance ofthe combination of depth and weight Note The use of the letter W does not restrict the user to W sections in the AISC Manual of Steel Construction The letter W is merely a flag to tell the program to search for a rolled section W section channel or angle If a section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W and WN 1 W24X76 and WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform arating an N was added to the shape designation to indicate a NEW shape In the event the user wishes to select the second occurance ofa section listed in the libr
52. 4567 LEFT SIDEWALK STRINGER ROLLED 18 6 000 0 691 3 W 18x55 Second 18x55 section listed in sections library 1234567 LEFT SIDEWALK STRINGER CHANNEL 9 W20 0 2 Sidewalk Width lt gt Sidewalk Wearing Surface Thickness KC i p Sidewalk Stringers Floor beam Truss Girder Sidewalk Width lt Sidewalk Wearing Surface Thickness Sidewalk Stringers Ez Sidewalk Bracket Truss Girder d Floorbeam Stringer SIDEWALK STRINGERS Left Sidewalk 8 00 8 5 BRASS TRUSS NOTES There are two ways the user can select a stringer from the sections library 1 The user may input a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within of the dimensions input If a section is not found an error message appears in the output 2 W Section or Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence of the co
53. 7 99 11 10 BRASS TRUSS COMMAND PARAMETERS Cont Web Plates Thickness Enter the thickness in inches of the full depth web plate Maximum 1 5 inches Minimum 0 18 inches Bottom Angles Width Enter the width in inches of the bottom flange angle leg that is Horizontal Leg attached to the bottom flange plate Maximum 9 inches Minimum 1 0 inches Bottom Angles Width Enter the width in inches ofthe bottom flange angle leg that is Vertical Leg attached to the web plate Maximum 9 inches Minimum 1 0 inches Bottom Angles Thickness Enter the thickness in inches of the bottom flange angle Maximum 1 125 inches Minimum 0 125 inches Bottom Plates Width Enter the average width in inches of all the bottom flange plates Maximum 36 inches Minimum 8 inches or 0 Bottom Plates Thickness Enter the total thickness in inches of all the bottom flange plates Maximum 4 inches Minimum 0 18 inches or 0 2 08 11 11 BRASS TRUSS EXAMPLE 1234567 RIVETED 2 41 3 9 0 1 0 3 5 3 5 40 40 0 50 3 5 3 5 40 9 0 1 0 FIGURES Width of Top Flange Plates Top Plane Thickness i Top Angle Width Horiz Leg x Angle Thickness Web Thickness 5 ORE Web Plate Depth of Web Plate Angle Thickness i Bottom Plates Thickness RIVETED GIRDER NOTES 2 98 11 12 BRASS TRUSS 7 99 11 13 BRASS TRUSS 470 BRASS TRUSS COMMAND DESCRIPTION COMMAND NAME ROL
54. 9 0 2 0 0 75 9 0 2 0 0 75 0 0 0 11 01 14 1 BRASS TRUSS ESES EN OMIG SLEFHS Z P0 LITHS toag Jo d Pe US comozi Vai NOILDIS TENIG LIDNO LIS 377 OGLE Vida Mas aad 52 OM CE BOG e TREES o OMAE eT d A ee d 2 e tag Y i Eri ps e 2 22 S3E ETEC s yep aesweng 20009 4 Cad 87770557 EET Uum SAP PE TES E VT Li E saancaeaey EJ 0272 Su BUn sBous 24S 1955 N EZ 02 06 IPHS z2 7 24 Bue L4 EMT SPILLLNONG Qx4UWIAST L ae aa e AUMCEOO 0 2 i A 557 77715 MO7 0 0 ge Oe BIKES 7053197 ONY 05007 021007 NOILIIS ONG NET LIEG gb iA 23072 555 pete e PILE ELLE 4 LNINLAGSIG KYMH ALLS i cepe DNINOAM JO FLELS Spee quxBErw nce Jer GP 047 sg ap EL LLL LAE 242245 ses YON 5 er ouo Sum sors 9 06 17 47 9027749 JU KEZ P sold jo uaamgog 2 4 5 PUD De up paso ok 2 Of UOLIDEULOD Oil
55. AISC shape is entered in Parameters 2 and 3 The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 9 9 BRASS TRUSS COMMAND NAME ISEC FLOORBEAM This command defines welded plate girder I Section PURPOSE floorbeams At least one type of FLOORBEAM command is required This command may be repeated to define an end and intermediate floorbeam 10 COMMAND PARAMETERS Location Enter the location of the floorbeam being defined Only the words END or INTERMEDIATE are allowed For deterioration ofthe section enter the word RUST See Note 1 Top Plate Width Enter the average width in inches of all of the top plates of the floorbeam Range 30 inches to 5 inches and 0 Top Plate Thickness Enter the total thickness in inches of all of the top plates Range 4 inches to 0 18 inches and 0 Angles Width Horizontal Leg Enterthe width in inches ofthe angle leg that is attached to the top or bottom plate Ifthere are no angles enter 0 See Note 2 Range 9 inches to 1 0 inches and 0 Angles Width Vertical Leg Enter the width in inches ofthe angle leg that is attached to the web plate If there are no angles enter 0 See Note 2 Range 9 inches to 1 0 inches and 0 Angles Thickness Enter the thickness in inches of the flange angl
56. BRASS TRUSS does not analyze the connections 8 00 12 6 BRASS TRUSS 7 99 12 7 BRASS TRUSS COMMAND NAME HANGER DETAILS PURPOSE This command defines hanger connections This command is optional 3 COMMAND PARAMETERS Number of U Bolts Enter the number of U Bolts that support the connecting member Hanger Diameter Enter the outside diameter of the threads on the U Bolts in decimals of an inch See Figures Maximum 3 inches Minimum 0 75 inches Enter either UPSET or CUT to describe the manner in which the threads are applied to the ends of the U Bolts No other words are acceptable Hanger End Configuration 7 99 12 8 BRASS TRUSS EXAMPLE 1234567 HANGER DETAILS 2 0 1 125 UPSET FIGURES Configuration Upset or Cut gt lt Diameter HANGER NOTES 7 99 12 9 BRASS TRUSS COMMAND NAME HINGE DETAILS PURPOSE This command defines the components of a hinge This command is optional S COMMAND PARAMETERS Pin Diameter Enter the outside diameter of the pin in inches If it is inaccessible enter 0 and fill in the Nut Size or Cap Diameter parameters See Figures Maximum 24 inches Minimum 1 inch or 0 Nut Size Enter the short nut diameter in inches This is the dimension across the flats This parameter is to be used only when the Pin Diameter and Cap Diameter parameters are 0 Enter O here if the Pin Diameter or Cap Diameter par
57. ERS Location Enter the location ofthe stringer being defined Only the words FASCIA or INTERIOR are allowed For deterioration of the section enter the word RUST See Note 1 Enter the depth in inches ofthe rolled beam stringer See Note 2 Maximum 37 inches Minimum 3 inches Flange Width Enter the flange width in inches ofthe rolled beam stringer If or the rolled beam section is specified on the As Built plans W Weight per Foot enter the letter W followed by the weight per foot from these plans See Note 2 Maximum 18 inches Minimum 2 inches or Maximum 730 Ibs Minimum 5 1 Ibs Flange Thickness Enter the average flange thickness in inches ofthe rolled beam stringer If the weight per foot was entered in Flange Width enter 0 Maximum 5 inches Minimum 0 18 inches or 0 inches 8 00 8 16 BRASS TRUSS EXAMPLE 1234567 ROLLED STRINGER INTERIOR 21 8 355 0 835 1234567 ROLLED STRINGER FASCIA 24 104 0 WN 24x104 First 24x104 section listed in sections library 1234567 ROLLED STRINGER FASCIA 24 9 775 0 942 W 24x104 Second 24x104 section listed in sections library FIGURES Flange Width Pange Thickness o ROLLED BEAM NOTES 1 Ifthere is deterioration of any stringers enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder of the second command enter
58. FLOORBEAM is repeated and the word RUST or for timber members is entered for the Span or Location parameter The remaining parameters contain the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element as described below There are two procedures that can be used to identify deterioration for the requirements of this program If by an eyeball inspection of the section the percentage of area loss is recognized then this percentage adjusted for the number of pieces of the element affected can be input under one of the field headings for that element and the other fields for that element input as zero If the percentage of area loss is not apparent in an element then the percentage of dimension loss either width depth or thickness is input under the appropriate field The only exceptions to the statement made above are for sections where the full dimensions ofthe elements are not required for input The channel web and flange thickness and the rolled beam web thickness are not required for identification of the section so the deterioration value input under the channel or rolled beam depth field or the channel flange width field are percentages of area loss rather than dimension loss The Figures and comments on the following pages illustrate the procedures used to generate the deterioration values 7 99 13 1 BRASS TRUSS Deterioration Information Cont
59. Horizontal Leg Enter the width in inches of the angle leg that is attached to the bottom flange plates If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Enter the width in inches of the angle leg that is attached to the web plate s If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Bottom Angles Width Vertical Leg Continued 7 99 10 25 BRASS TRUSS COMMAND PARAMETERS Cont Bottom Angle Thickness Enter the thickness in inches of the bottom angle If there are no angles enter 0 Maximum 1 125 inches Minimum 0 125 inches or 0 Bottom Plates Width Enter the average width in inches of all the continuous bottom flange plates If none exist enter 0 Maximum 24 inches Minimum 5 inches or 0 Bottom Plates Thickness Enter the total thickness in inches of all the continuous bottom flange plates If none exist enter 0 Maximum 3 inches Minimum 0 18 inches or 0 Drop Distance From Datum If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a blank space and a minus sign i e 5 Ifthe bottom of the vertical is above the datum line use a plus symbol i e 5 11 01 10 26 BRASS TRUSSTM EXAMPLE 1234567 U05U06 ISEC 0 15 0 625 7 3 5 625 7 5 075 7 3 5 625 15 5 625 FIGURES I SECTION FULL
60. LED PURPOSE Span Number Range Top Plates Width Top Plates Thickness Rolled Beam Depth Rolled Beam Flange Width or W Weight per Foot Rolled Beam Flange Thickness Bottom Plates Width Bottom Plates Thickness Continued 8 00 This command defines the rolled beam girder At least one girder type command is required 11 COMMAND PARAMETERS Enter the span number of the span rated Range is defined as a portion or length of a span in feet for which there are no changes in any elements of the girder The position of the range within the span is defined by giving the distance range from the support to the far end of the range Each span is to be treated separately Up to 30 ranges sections may be described with the last Range dimension equal to the span length Enter the average width in inches of all the top plates See Figures for all dimensions Maximum 30 inches Minimum 6 inches or 0 Enter the total thickness in inches of all the top flange plates Maximum 2 inches Minimum 0 375 inches or 0 Enter the depth in inches ofthe rolled beam girder See Notes Maximum 37 inches Minimum 3 inches Enter the flange width in inches of the rolled beam girder If the Rolled Beam section is specified on the Built plans enter the letter W followed by the weight per foot from these plans See Notes Maximum 18 inches Minimum 2 inches or Maximum 730 Ibs Minimum
61. Range is defined as a portion or length of a span in feet for which there are no changes in any elements of the girder The position of the range within the span is defined by giving the distance range from the support to the far end of the range Each span is to be treated separately Up to 30 ranges sections may be described with the last Range dimension equal to the span length Depth Enter the depth in inches ofthe channel girder See Notes See Figure for all dimensions Maximum 18 inches Minimum 3 inches Flange Width Enter the flange width in inches of the channel girder If the or channel beam section is specified on the Built plans enter W Weight per Foot the letter W followed by the weight per foot from these plans See Notes Maximum 4 inches Minimum 1 4 inches or Maximum 58 Ibs Minimum 4 1 lbs Composite Enter N or Y to designate no or yes for composite action No other letters are acceptable 8 00 11 20 BRASS TRUSS EXAMPLE 1234567 CHANNEL 2 65 14 4 N 1234567 CHANNEL 2 65 15 W40 N FIGURES Flange Width Depth v CHANNEL GIRDER vores fT There are two ways the user can select a channel girder from the sections library 1 The user may input a section depth and flange width in Parameters 3 and 4 The program will search the library for the first occurrence of this combination of values section is not found in the library
62. SS 7 99 5 13 BRASS TRUSS COMMAND NAME MEDIAN PURPOSE This command defines the median and barrier on the deck This command is optional 4 COMMAND PARAMETERS Median Width Enter the width of the median in feet See Figures Maximum 40 feet Minimum 0 2 feet Median Thickness Enter the distance in inches from the top ofthe median surface to the top of the roadway surface Maximum 18 inches Minimum 0 inches Median Material Enter CONCRETE ASPHALT STEEL TIMBER or NONE No other words are acceptable Enter CONCRETE STEEL ALUMINUM or NONE No other words are acceptable Barrier Material 7 99 5 14 BRASS TRUSS EXAMPLE 1234567 MEDIAN 10 0 9 0 CONCRETE STEEL FIGURES Left Sidewalk Width Median Right Sidewalk Width Left Pavement Width Width Right Pavement Width lt gt gt lt gt Median Thickness Median Barrier a Wearing Surface WIDTH MEASUREMENTS Median Width Median Barrier FLUSH MEDIAN o 7 99 5 15 BRASS TRUSS 7 99 5 16 BRASS TRUSS 6 CODING INSTRUCTIONS FOR RAILWAY AND UTILITIES DETAILS 7 99 6 1 BRASS TRUSS COMMAND NAME MEMBER LAYOUT This command defines the locations ofthe main members This PURPOSE command is optional This command is required for railway bridges only 9 COMMAND PARAMETERS Bridge Edge
63. TE If 0 is entered in the Span or Depth parameter enter 0 in the 4 remaining parameters Number of Bottom Bars Enter the number of bottom bars per foot in the concrete deck Enter the size of the bottom bars used in the slab Range 7 to 3 Size of Bottom Bars Number of Top Bars Enter the number of top bars per foot in the concrete deck Size of Top Bars Enter the size of the top bars used in the slab Range 7 to 3 7 99 7 2 BRASS TRUSS EXAMPLE 1234567 CONCRETE DECK 4 5 9 FLAT 4 5 5 5 FIGURES 00001 Deck Depth when Deck Depth when Wearing Surface 2224 Wearing Surface Thickness is unknown de Thickness is known A m FLAT SLAB Ed Deck Depth when Deck Depth when Wearing Surface zi N Wearing Surface Thickness is unknown l Thickness is known Crown JACK ARCH Deck Depth when Deck Depth when Wearing Surface _ Wearing Surface Thickness is unknown Thickness is known DECK DEPTH Figure 1 Web Flange BLAST ENCASED STRINGER Figure 2 Continued 7 99 7 3 BRASS TRUSS Web lt gt Blast Configuration Encased Configuration FLAT DECK Beginning p Arch Flange 0 Web lt gt Flange Web Beginning of Arch Encased Configuration Bl
64. Width Enter the average distance in feet from the inner face to the other face of the parapets Maximum 2 feet Minimum 0 feet Right Concrete Parapet Height Enter the distance in feet from the top of the deck or sidewalk to the top of the parapet Maximum 4 feet Minimum 0 feet 8 00 5 10 BRASS TRUSS EXAMPLE 1234567 RIGHT SIDEWALK 0 0 NONE NONE 0 0 FIGURES Pavement Width i Left Sidewalk Right Sidewalk Width 0 Width 0 Left Parapet Average Width Median Right Sidewalk Width Left Pavement Width Right Pavement Width Wearing Surface i Sidewalk Width Right Sidewalk Width Pavement Width Average Wearing i Surface Thickness Left Sidewalk Right Sidewalk Width Pavement Width MM ee 4 WIDIH MEASUREMENTS Continued 8 00 5 11 BRASS TRUSS FIGURES Cont Sidewalk Width E Average Parapet Width 9 3 Bridge Railing Sz Lx JE alr eee 8 55 Sidewalk Width Sidewalk Width d Parapet Width Bridge Railing E L Parapet Height i o BE 2 9 BRIDGE FASCIAE Railing weights are based on the type of material input MATERIAL WEIGHT Steel 50 165 per linear foot Concrete 200 Ibs per linear foot Timber 20 Ibs per linear foot Aluminum 30 Ibs per linear foot 7 99 5 12 BRASS TRU
65. YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY Steel parameter on the STRESSES command 9 COMMAND PARAMETERS Enter the letter that corresponds to the vertical location of the beginning of the truss member of this type U is for upper is for middle and L is for lower panel points If there are more that 99 panels change the U to change M to and change the L to for those members over 99 See Page 10 2 for numbering convention DO NOT place a blank space between this parameter and the following parameter Etner the two digit number that corresponds to the horizontal location of the beginning of the truss member of this type Numbers less than ten start with 0 DO NOT place a blank space between this parameter and the following parameter Enter the letter that corresponds to the vertical location of the end of the truss member of this type U is for upper M is for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change the to for those members over 99 DO NOT place a blank space between this parameter and the following parameter Enter the two digit number that corresponds to the horizontal location of the end of the truss member of this type Numbers less than ten start with the 0 Insert a
66. a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within Vs of the dimensions input section is not found an error message appears in the output 2 If a Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence of the combination of depth and weight Note The use of the letter W does not mean that a W section will be selected The letter W is merely a flag to tell the program to search for a rolled channel section If a section is not found an error message appears in the output The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 8 15 BRASS TRUSS COMMAND NAME ROLLED STRINGER This command defines rolled stringers At least one type of PURPOSE STRINGER command is required This command may be repeated to define a fascia and interior rolled beam stringer 4 COMMAND PARAMET
67. al Only one command from this group can be used in a single data set 3 2 7 99 This command is required when a stringer is present 34 At least one command from this group must be used in each data set TRUSS FLOORBEAM STRINGER BRIDGES RATINGST EXE BRASS TRUSS Command Name Usage SPANS DATE BRIDGE LOCATION DEBUG YEARS TRUCK CODE Not currently operational STRESSES COMMENTS WEARING SURFACE PAVEMENT LEFT SIDEWALK RIGHT SIDEWALK MEDIAN MEMBER LAYOUT RAILWAY TRACK LAYOUT UTILITIES CONCRETE DECK GRATING DECK TIMBER DECK STEEL SLEEPERS TIMBER SLEEPE SECONDARY MEMBER LONGITUDINAL STRINGER LEFT SIDEWALK STRINGER RIGHT SIDEWALK STRINGER CONCRETE PROTECTION LONGITUDINAL STRINGER CHANNEL STRINGER FASCIA OR INTERIOR ROLLED STRINGER FASCIA OR INTERIOR TIMBER STRINGER FASCIA OR INTERIOR SECONDARY MEMBER TRANSVERSE FLOOR CONCRETE PROTECTION TRANSVERSE FLOORBEAM CHANNEL FLOORBEAM END OR INTERMEDIATE ROLLED FLOORBEAM END OR INTERMEDIATE ISEC FLOORBEAM END OR INTERMEDIATE MAIN MEMBER TRUSS CONTINUOUS TRUSS SUPPORTS CBX THREADED CONNECTION FRAMED HANGER HINGE 1 Required Optional Required Required Optional Required Optional Required Optional Required Required Required Required Optional Optional Optional Optional Optional Req d Optional Optional Required Optional Optional Optional Required Required Optional Requ
68. am enter the distance in feet from the adjacent main member to the location ofthe utility see Figure 1 Foran interior stringer or a fascia stringer enter the distance in feet from the adjacent stringer to the location of the utility see Figure 2 For all other types of adjacent members enter 0 see Figures 3 and 4 Distance from Adjacent Main Member to Location of Utility 7 99 6 8 BRASS TRUSS EXAMPLE 1234567 UTILITIES FLUID 1 6 STEEL 3 5 FLOORBEAM 1 21 FIGURES Rated Main Adjacent Member Main Member Figure 1 Distance to Rated _ Distance to adjacent Main Member Main Member Utility FLOOR BEAM Rated Springer Adjacent Springer Utility Support Figure 2 Distance to Rated Springer Distance to Adjacent Stringer gt lt gt Utility STRINGER UTILITY MOUNTINGS NOTES Continued 7 99 6 9 BRASS TRUSS FIGURES Cont t Slab Attachment Distance to Rated and Adjacent Fields entered as 0 Figure 3 No supporting members Utility between Stringers SLAB Bracket on Main Member Utility Main Member Figure 4 Distance to Rated and Adjacent Fields entered as 0 BRACKET UTILITY MOUNTINGS 7 99 6 10 BRASS TRUSS 7 1 7 99 CODING INSTRUCTIONS FOR DECK CROSS SECTION AND SLEEPERS GENERAL INFORMATION Only one type of deck may be entered If the GRATING DECK command is used only the STEEL SLEEPERS command may be u
69. ameters are not 0 Maximum 13 inches Minimum 2 inches or 0 Cap Diameter Enter the cap diameter in inches This parameter is to be used only when the Pin Diameter and Nut Size parameters are 0 Enter 0 here if the Pin Diameter or Nut Size parameters are not 0 Maximum 25 inches Minimum 10 inches or 0 Strap Width Enter the AVERAGE width of ALL the straps in inches If none exist enter 0 Maximum 24 inches Minimum 4 inches or 0 Strap Thickness Enter the TOTAL thickness of ALL the straps in inches If none exist enter 0 Maximum 4 inches Minimum 0 25 inches or 0 7 99 12 10 BRASS TRUSS EXAMPLE 1234567 HINGE DETAILS 7 00 0 0 130 40 Ca Diameter Pin Diameter Narrow Strap gt lt Strap Thickness Wide Strap Mtn Threaded Small Nut on Pin End Thru Bolt v Nut Size bu Thru Bolt SECTION THRU HINGE ELEVATION HINGE PIN HINGE DETAILS nores 7 99 12 11 BRASS TRUSS 7 99 12 12 BRASS TRUSS 13 DETERIORATION INFORMATION When deterioration of sleepers stringers or floorbeams occur two commands are required to provide the information needed The first command of the set contains the dimensions of an original unrusted or non deteriorated section The command STEEL SLEEPERS TIMBER SLEEPERS CHANNEL STRINGER ROLLED STRINGER TIMBER STRINGER CHANNEL FLOORBEAM ROLLED FLOORBEAM or ISEC
70. ank space and a minus sign i e 5 Ifthe bottom of thevertical is above the datum line use a plus symbol i e 5 11 01 10 13 BRASS TRUSS EXAMPLE 1234567 006007 CBXO 0 17 0 0 38 10 0 2 74 0 0 16 5 0 1234567 110111 CBXO 0 22 0 15 W40 12 0438 22 0 FIGURES CHANNEL BOX CHANNEL BOX W O TOP IP WITH CHANNELS IN WITH CHANNELS OUT BUT LACING CBXO CBXI CBXO IlILILIILLILILILMLS 11 mmu T leere ES W O BOTTOM IP W O TOP AND BOTTOM W O WEB S BUT LACING P S BUT LACING FLANGE ORIENTATION Figure 1 Width of Top Plates Top Plates Thickness Flange Width Web Plates Thickness 8 g 2 9 O a a 4 Bottom Plates Thickness Width of Bottom Plates CHANNEL BOX TRUSS MEMBER Figure 2 8 00 10 14 BRASS TRUSS NOTES There are two ways the user can select a channel truss member from the sections library 1 The user may input a section depth and flange width in Parameters 9 and 10 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within of the dimensions input If a section is not found an error message appears in the output 2 If a Channel is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the b
71. area located by the preceding command of this pair On this deterioration command fill out the headings up through and including the parameter heading Span Number For the parameter Range enter the word RUST For the remainder of this command see the detailed explanation of the information required for deterioration in section DETERIORATION INFORMATION Page 13 1 7 99 11 1 BRASS TRUSS COMMAND NAME MAIN MEMBER PURPOSE This command defines the type of girder configuration for girder bridges This command is required for girder bridges 10 COMMAND PARAMETERS Girder Type Enter DECK or THRU to describe the general type of bridge construction with girders as the main supporting members No other words are acceptable See Figure 1 Girder Main Member Enter GIRDER No other words are acceptable Enter RIVETED WELDED or TIMBER to describe the type of girder construction No other words are acceptable If the girder is a rolled beam without cover plates enter WELDED See Note 1 Girder Construction Girder Orientation If the Girder Type is DECK or THRU enter LEFT MIDDLE RIGHT or EITHER No other words are acceptable Haunch Depth If the Girder Type is THRU enter 0 Otherwise if the space between the bottom of the concrete deck and the top of the girder top flange is filled with concrete enter this distance in i
72. ary use the first method described above and input the specific flange width as it appears in the library See the example above Note A zero must be entered in Parameter 4 when an AISC shape is entered in Parameters 2 and 3 The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 7 11 COMMAND NAME TIMBER SLEEPERS PURPOSE This command defines the timber sleepers on a bridge This command is optional 4 COMMAND PARAMETERS Span Enter the center to center distance in feet between the members supporting the sleepers See Figure Maximum 9 feet Minimum 1 foot For deterioration of the section enter the word ROT See Notes Depth Enter the depth in inches of the timbers that are used as the sleepers Maximum 18 inches Minimum 4 inches Width Enter the width in inches of the timbers Maximum 12 inches Minimum 2 inches Stress If the stress grade was not 0 on the STRESSES command and or the stress grade for the timber sleepers is different than the one given on the STRESSES command enter it here in ksi If the two values are equal or the value for the timber sleepers is unknown enter 0 7 99 7 12 BRASS TRUSS EXAMPLE 1234567 TIMBER SLEEPERS 4 5 8 5 5 0 FIGURES Asphalt or Wood ok Surface Wood Deck Wood
73. ary Member Transverse Floorbeam Command Concrete Protection Transverse Floorbeam Command Channel Floorbeam End and Intermediate Command Rolled Floorbeam End and Intermediate Command Isec Floorbeam End and Intermediate Command SECTION 10 Coding Instructions for Main Members Trusses General Information for Trusses General Deterioration Information for Truss Members Main Member Command Continuous Truss Supports Command CBX or CBH Command Box Channels amp Plates ABX or ABH Command Box Angles amp Plates ROLLED or ROLHED Command Rolled Beam amp Plates ISEC or ISEH Command I Section Plates amp Angles EYEBAR or EYEHAR Command Eyebar THREADED or THRHADED Command Threaded Bar SECTION 11 Coding Instructions for Main Members Girders General Deterioration Information for Girder Members Main Member Command Hinge Command Main Member Concrete Protection Command Riveted Command Rolled Command Welded Command Channel Command Timber Command SECTION 12 Coding Instructions for Connections Connection Command Framed Details Command Hanger Details Command Hinge Details Command SECTION 13 Deterioration Information SECTION 14 Sample Problem 2 12 iv 11 1 11 10 11 18 11 20 1122 12 1 12 2 12 4 12 8 12 10 13 1 14 1 BRASS TRUSSTM TRUSS GIRDER FLOORBEAM STRINGER BRIDGE RATING PROGRAM 1 GENERAL INFORMATION BRASS TRUSSTM is a system of computer programs designed to assist a bridge engineer in the
74. as middle M panel points There must be corresponding panel points above and below these M panel points on each chord Also there must be full height dummy verticals added from each M panel point down to the bottom chord None are needed from the M panel points up to the top chord Double and Triple Lattice Trusses are unratable On trusses that are a combination of Deck Pony and Thru Types like truss 10 enter the truss type as DECK Enter 0 0 at the end of the MAIN MEMBER truss command Be sure to enter the blank spaces as shown here Establish Datum Line from one end of the truss to the other at the top of the end verticals The bottom of each vertical member must be located off of this Datum Line Add a dimension in feet called the Drop Distance from the Datum Line to the bottom of each vertical at the end of the command describing each vertical member Generally the bottom ofthe verticals will be below the Datum Line and will be preceded by a blank space and a minus sign 5 0 If the bottom of the vertical is above the Datum Line precede the drop distance with a blank space and a plus sign 5 0 On Lenticular Trusses like truss 11 establish a datum line through the end points ofthe truss U00 U08 in this example Enter the Drop Distances as mentioned in the preceding paragraph from this Datum Line to locate the bottom of each vertical If there are posts or short columns supporting the trusses at the ends
75. ast Configuration JACK DECK Figure 3 NOTES 7 99 7 4 BRASS TRUSS 7 99 7 5 BRASS TRUSS COMMAND NAME GRATING DECK PURPOSE This command defines the grating deck on a bridge At least one type of DECK command is required S COMMAND PARAMETERS Span Enter the center to center distance in feet of the members supporting the deck Maximum 9 feet Minimum 1 foot Main Bar Depth Enter the depth in inches of the deepest grating bars that are being supported on the next level below the grating whose center to center distance was entered above See Figures Maximum 9 inches Minimum 2 inches Main Bar Thickness Enter the thickness in inches of the main bars Maximum inch Minimum 0 1 inch Enter the center to center distance in inches of the main bars Maximum 15 inches Minimum 2 inches Main Bar Spacing Enter the type of grating construction either FILLED or OPEN No other words are acceptable 7 99 7 6 BRASS TRUSS EXAMPLE 1234567 GRATING DECK 4 5 8 5 9 OPEN FIGURES Main Bars Main Bar Thickness d Spacing OPEN STEEL BRIDGE FLOORING Noms 7 99 7 7 BRASS TRUSS COMMAND NAME TIMBER DECK PURPOSE This command defines the timber deck on a bridge At least one type of DECK command is required 4 COMMAND PARAMETERS Span Enter the center to center distance in feet of the members support
76. ation required for deterioration 2 Forriveted sections the net section is computed by deducting the number of holes for each leg an angle can have The same number of holes are deducted from the plates that attach to those angles This applies to axial loaded members only 7 99 9 11 BRASS TRUSS 7 99 9 12 BRASS TRUSS 10 CODING INSTRUCTIONS FOR MAIN MEMBERS TRUSSES 10 1 GENERAL INFORMATION FOR TRUSSES On trusses that have a middle panel a truss with an odd number of panels like truss 1 on Page 10 2 the diagonals in the middle panel can NOT be connected They must be entered as a full length member from the top to the bottom chords On trusses like 5 and 6 there must be a panel point on the opposite chord from where the diagonals meet the chords In Truss 5 there must be panel points in the bottom chord that correspond to those where the diagonals intersect the top chord L02 L04 and L06 In truss 6 which does not have any verticals the same requirement applies to each chord U02 U04 and U06 must be added to the top chord and L01 L03 LOS and L07 must be added to the bottom chord In addition there must be full height dummy verticals added at the odd panel points 1 3 5 and 7 These are entered as ISEC Type members with 0 zero in the Member Length parameter The remaining parameters may be left blank On Single Lattice Trusses like truss 9 on Page 10 3 all of the diagonal intersections must be considered
77. be valid 7 99 1 3 BRASS TRUSS 1000000 COMMAND EXAMPLE 1000000 COMMAND EXAMPLE 0 0 2 0 002 When a command is used all parameters must be entered No parameter may be left blank Ifa parameter does not apply enter zero Data may be entered anywhere after a command with or without decimal points in the case of whole numbers A blank space must separate the command and all parameters No more than 132 columns per line may be input Executing BRASS TRUSS BRASS TRUSS is basically a DOS based application A Microsoft Windows Graphical User Interface has not yet been developed BRASS TRUSS can be run outside the Windows environment or as a DOS shell within Windows BRASS TRUSS consists of two executable programs RATINGED EXE and RATINGST EXE a section library file STSECT DAT and other utility files TRUSS PIF R EDITS DAT etc Running BRASS TRUSSTM is a two step process First the user screens the data set for errors then chooses an analysis procedure There are two types of analysis procedures available Pages 3 1 through 3 2 ofthe Users Manual detail the commands required for a girder floorbeam string bridge and a truss floorbeam stringer bridge From Windows double click the BRASS TRUSS icon This action will place you at the c truss exe gt prompt At the prompt type ratinged BRASS TRUSS will automatically prompt you for the input file name i e filename dat and will assign the
78. bity tet PUL MOM TRO fire FAZA MOM AIM 227 MEYER UENIT PE MEG Be EA P 782 s GAP GEG PULOTU ME Of Bf OA 15104908 PZL UPAG ponam BRASS TRUSS 14 3 8 00 8 00 14 4 BRASS TRUSS
79. covering the bottom flange See Figures Web Thickness If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from one side of the concrete covering the web to the other above the bottom flange See Figures 7 99 9 4 BRASS TRUSS EXAMPLE 1234567 CONCRETE PROTECTION TRANSVERSE FLOORBEAM 4 4 FIGURES 7 99 9 5 BRASS TRUSS COMMAND NAME CHANNEL FLOORBEAM This command defines channel floorbeams At least one type PURPOSE of FLOORBEAM command is required This command may be repeated to define an end and intermediate floorbeam 3 COMMAND PARAMETERS Location Enter the location of the floorbeam being defined Only the words END or INTERMEDIATE are allowed For deterioration of the section enter the word RUST See Note l Depth Enter the depth in inches of the channel floorbeam See Note 3 Maximum 18 inches Minimum 3 inches Flange Width or W Weight per Foot Enter the flange width in inches of the channel floorbeam If the channel section is specified on the As Built plans enter the letter W followed by the weight per foot from these plans See Note 2 and 3 Maximum 4 2 inches Minimum 1 4 inches or Maximum 58 Ibs Minimum 4 1 16 8 00 9 6 BRASS TRUSS EXAMPLE 1234567 CHANNEL FLOORBEAM END 15 3 716 1234567 CHANNEL FLOORBEAM INTERMEDIATE 12 W30 FIGURES Flange Width
80. d 8 00 5 7 BRASS TRUSS FIGURES Cont Average Parapet Width Sidewalk Width gt Railing Parapet Height Sidewalk Sidewalk Width Parapet Width Bridge Railing Thickness E Sidewalk Width Parapet eight TT dens ic x 2 50 D BRIDGE FASCIAE NOTES Railing weights are based on the type of material input MATERIAL WEIGHT Steel 50 Ibs per linear foot Concrete 200 Ibs per linear foot Timber 20 Ibs per linear foot Aluminum 30 Ibs per linear foot 7 99 5 8 BRASS TRUSS 7 99 5 9 BRASS TRUSS COMMAND NAME RIGHT SIDEWALK PURPOSE This command defines the right sidewalk and or parapets on the deck This command is required 6 COMMAND PARAMETERS Right Sidewalk Width Enter the distance in feet from the curb line to the outside edge of the right sidewalk if one is present See Figures for all dimensions Maximum 12 feet Minimum 0 feet Right Sidewalk Thickness Enter the sidewalk thickness in inches Maximum 18 inches Minimum 0 inches Right Sidewalk or Parapet Enter STEEL TIMBER CONCRETE GRATING Material ASPHALT or NONE No other words are acceptable Right Sidewalk Railing Material Enter ALUMINUM STEEL TIMBER CONCRETE or NONE No other words are acceptable Right Concrete Parapet
81. d rating These programs are described below BRASS GIRDER Performs a design review and or rating of highway bridges decks girders using plane frame analysis and the AASHTO Standard Specifications Load factor and working stress computations are performed BRASS GIRDER LRFD A comprehensive system for the design and or rating of highway bridges decks and girders using finite element theory of analysis and current AASHTO LRFD Specifications BRASS PIER Performs an analysis of a bridge transverse section at pier locations The program provides a comprehensive analysis of bridge decks piers and selected foundationtypes All AASHTO loads and group loads are considered Live load is automatically positioned for maximum actions Load factor and working stress computations are performed BRASS PIER LRFD Performs analysis of a bridge transverse section at pier locations Provides a comprehensive analysis of bridge decks piers and selected foundation types All AASHTO LRFD loads and group loads are considered Live load 1s automatically positioned for maximum actions BRASS CULVERTTM Designs analyzes and or rates one two three or four barrel reinforced concrete rigid or flexible box culverts with or without bottom slab End skews can also be defined Wall and slab thickness may be specified or the program will set the thickness AASHTO guidelines are followed and Service Load Design Load Factor Design or Load and
82. defines the position of a railway track on a bridge This command maybe repeated and is optional S COMMAND PARAMETERS Bridge Edge to Left Rail Track 1 Enter the distance in feet from the left edge ofthe bridge to the inside face of the top portion of the left rail for each track For thru type of structures use the center line of the truss or girder as the edge ofthe bridge For deck structures with ties or some other type of track support use the left edge of this support If there are less than 4 tracks enter 0 where tracks do not exist Bridge Edge to Left Rail Enter the distance in feet from the left edge ofthe bridge to the Track 2 inside face ofthe top portion of the left rail for each track For thru type of structures use the center line of the truss or girder as the edge ofthe bridge For deck structures with ties or some other type of track support use the left edge of this support If there are less than 4 tracks enter 0 where tracks do not exist Bridge Edge to Left Rail Enter the distance in feet from the left edge of the bridge to the Track 3 inside face of the top portion ofthe left rail for each track For thru type of structures use the center line of the truss or girder as the edge ofthe bridge For deck structures with ties or some other type of track support use the left edge of this support If there are less than 4 tracks enter 0 where tracks do not exist Bridge Edge to Left Ra
83. designation for the Ramp Bridge Only particular ramp span to be rated If there are no ramps enter 0 Total Bridge Spans Enter the total number of spans on the bridge viaduct etc This parameter cannot be 0 Zero If fictitious additional spans are needed to input a bridge keep this number equal to the actual Number of Spans in the bridge 7 99 4 2 BRASS TRUSS EXAMPLE 1234567 SPANS 0 0 1 FIGURES NOTES 7 99 4 3 BRASS TRUSS COMMAND NAME PURPOSE This command allows the user to record up to 4 inspection dates This command is optional 4 COMMAND PARAMETERS Date 1 Enter the month and year the bridge was inspected These Format mm yy dates are for recording purposes only and are Y2K Compliant Date 2 Enter the month and year the bridge was inspected Date 3 Enter the month and year the bridge was inspected Date 4 Enter the month and year the bridge was inspected 7 99 4 4 BRASS TRUSS EXAMPLE 1234567 DATE 10 78 8 82 9 85 5 87 FIGURES NOTES 7 99 4 5 BRASS TRUSS COMMAND NAME PURPOSE This command defines the spans and members to be rated It also defines the member type This command is required 12 COMMAND PARAMETERS Enter the span number of the first span in the unit that is being rated Beginning Span Number Enter the span number of the last span in the unit that is being rated For simple spans enter the same span number as entered in t
84. dimensions or the member is a diagonal enter 0 Top Plates Width Enter the average width in inches of all the continuous top flange plates If none exist enter 0 See Figures for all dimensions Maximum 24 inches Minimum 5 inches or 0 Enter the total thickness in inches of all the continuous top flange plates If none exist enter 0 Maximum 3 inches Minimum 0 18 inches or 0 Top Plates Thickness Enter the width in inches of the angle leg that is attached to the top flange plates If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Top Angles Width Horizontal Leg Top Angles Width Vertical Leg Enter the width in inches of the angle leg that is attached to the web plate s If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Top Angles Thickness Enter the thickness in inches ofthe top flange angle If there are no angles enter 0 Maximum 1 125 inches Minimum 0 125 inches or 0 Web Plates Depth Enter the back to back distance in inches between the top and bottom angles If there are no angles enter the depth of the web plate Maximum 40 inches Minimum 5 inches or 0 Web Plates Thickness Enter the thickness in inches of the full depth web plate s If there are no full depth web plates or lacing bars are used enter 0 Maximum 1 inch Minimum 0 18 inches or 0 Bottom Angles Width
85. dth enter 0 Range 5 inches to 0 18 inches and 0 Top Cover Enter the width of the top cover plate in inches Plate Width Top Cover Plate Thickness Enter the thickness of the top cover plate in inches Bottom Cover Plate Width Enter the width of the bottom cover plate in inches Bottom Cover Plate Thickness Enter the thickness of the bottom cover plate in inches 8 00 9 8 BRASS TRUSS EXAMPLE 1234567 ROLLED FLOORBEAM END 21 8 355 0 835 0 0 0 1234567 ROLLED FLOORBEAM INTERMEDIATE 24 W104 0000 WN 24 104 First 24x104 section listed in sections library 1234567 ROLLED FLOORBEAM INTERMEDIATE 24 9 775 0 942 0 0 0 W 24x104 Second 24x104 section listed in sections library FIGURES Top Plate Width gt Plate Flange Flange Thickness width Wicked v Depth E Thickness Bottom Plate Width ROLLED BEAM NOTES 1 If there is deterioration of the floorbeams enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder ofthe second command enter the percentage of area loss for a particular elemtent or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 2 There are two ways the user can select a rolled floorbeam from the sections library 1 The user may inpu
86. e Figures for all dimensions Maximum 42 inches Minimum 8 inches Top Plates Thickness Enter the thickness in inches of all the top plates Maximum 4 inches Minimum 0 5 inches Web Plates Depth Web Plates Thickness Bottom Plates Width Enter the depth in inches of the web plate Maximum 150 inches Minimum 18 inches Enter the thickness in inches of the web plate Maximum 1 5 inches Minimum 0 25 inches Enter the average width in inches of all the bottom plates Maximum 42 inches Minimum 8 inches Enter N or Y to designate or yes for composite action Bottom Plates Thickness Enter the thickness in inches of all the bottom plates No other letters are acceptable Maximum 3 inches Minimum 0 5 inches Composite FY Enter the yield strength in ksi of the flanges if it is different than that of the web 7 99 11 18 BRASS TRUSS EXAMPLE 1234567 WELDED 1 110 22 1 5 84 0 625 22 15 46 FIGURES n Top Flange Width Flange Thickness v fi lt Web E Thickness Flange Thickness Bottom Flange Width WELDED GIRDER 7 99 11 19 BRASS TRUSS COMMAND NAME CHANNEL PURPOSE This command is used to describe a channel girder At least one type of girder command is required S COMMAND PARAMETERS Span No Enter the span number of the span being rated Range
87. e between this parameter and the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Left or Top location of the beginning of the truss member of this type Number less than ten start with the 0 DO NOT place a blank space between this parameter and the following parameter Member End Location Enter the letter that corresponds to the vertical location of the Right or Bottom end of the truss member of this type U is for upper M is for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change the to for those members over 99 DO NOT place a blank space between this parameter and the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Right or Bottom location of the end of the truss member of this type Numbers less than ten start with the 0 Insert a space followed by the command after this parameter Place a space after this command as usual See Example Continued 11 01 10 20 BRASS TRUSS COMMAND PARAMETERS Cont Member Length Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member 15 the same a
88. e of Supporting Members Enter TIMBER CHANNEL or ROLLED to describe the kind of members supporting the right sidewalk No other words are acceptable See Figures Member Depth Enter the depth in inches of the right sidewalk stringer See Notes Maximum 37 inches Minimum 3 inches Member Flange Width Enter the flange width in inches If a channel or rolled beam section is specified on the As Built plans enter the letter W W Weight per Foot followed by the weight per foot from these plans See Notes Enter the width in inches of timber members Maximum 17 inches Minimum 1 5 inches Member Flange Thickness Enter the average flange thickness in inches If the weight per foot was entered above or the type of supporting members is timber enter 0 Maximum 1 7 inches Minimum 0 inches Number of Members Enter the number of stringers supporting the right sidewalk NOTE For special loads in the sidewalk area trusses left in place that are carried by new thru or deck girders heavy utility vaults etc on bridge types that allow the use of stringers enter in the Type of Supporting Member parameter Enter 99 in the Member Depth parameters Enter W and the weight per foot needed to account for the actual sidewalk stringers if present plus the special load in the Member Flange Width parameter Enter 0 in the Member Flange Thickness parameter Enter 1 in the
89. eam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 9 and input the letter W followed by the weight per foot in Parameter 10 The program will search the library for the first occurrence of the combination of depth and weight Note The use of the letter W does not mean that a W section will be selected The letter W is merely a flag to tell the program to search for a rolled channel section Ifa section is not found an error message appears in the output The shape you enter must exist the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 10 15 BRASS TRUSS COMMAND NAME ABX or ABH This command defines truss members composed of angles and plates This command is required when angle members exist and may be repeated as often as needed to describe all the angle members PURPOSE Use the command ABX or ABH The X or H are used to determine the Yield Strength for this member is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY Steel parameter on the STRESSES command 19 COMMAND PARAMETERS NOTE The following fou
90. ed eats 350 10 6 Continuous Truss Supports 360 10 8 MEDIA gts e eis D aset s 130 5 14 MEMBER 140 6 2 PAVEMENT 100 54 7 99 2 1 BRASS TRUSS 25 COMMAND DESCRIPTION INDEX Cont Command Name Command No WIACY de putt b eee t lou te ee bus 150 SECONDARY MEMBER Longitudinal Stringer 230 Transverse Floorbeam 300 SIDEWALKS ctm sott ae tata stone AUR Res 110 a acte ee sac diel baad ah alas 120 SLEEPERS Steel sie edel d eee Sth EER ead td a 210 Timber us boxe ath d 220 SN 10 SIRESSBS 3 2 70 STRINGERS Channel oot e ID E ue d 270 Rolled SS 280 Sidewalk 240 250 290 TRACK LAYOUT e Ar i a a d 160 TRUCK CODE Not currently operational 60 TRUSS MEMBERS Box Angles amp 380 Box Channels amp Plates 370 ens Leo etis od 410 NS 400 Rolled re cea d sad 390 Threaded rant i eus 420 UTIBULIES2 iiid se Bette par ut eite eet as 170 WEARING SURFACE 90 tte oor ue Moro 50 Page No 6 4 8 2 9 2 5 6 5 9 7 10 7 10 4 2 4 16 8 10 8
91. ee Notes Enter the number of connections Up to four connections are allowed For multigirder or concrete units enter 0 If the connection data is not submitted enter the appropriate Non Rating Code Connections cannot be rated See Notes Number of Connections 7 99 4 7 BRASS TRUSS EXAMPLE For a simple span truss with three main members one end floorbeam one interior floorbeam one exterior stringer one interior stringer and an unknown connection configuration code 1234567 BRIDGE 1 1 0 0 TRUSS 8 31111 UNKN FIGURES NON RATING CODES UNRA UNRATABLE STRUCTURAL TYPE Use this code if the member cannot be rated by this program such as suspension bridges curved girders rigid frames arches or post tensioned bridges SEVE SEVERE DETERIORATION Use this code if the member is severely deteriorated so that it is beyond the scope of the project to accurately rate the member This code is to be used only for extreme cases of deterioration INAC INACCESSIBLE MEMBER Use this code if the member is inaccessible and cannot be measured such as a member over electrified wires UNKN UNKNOWN SECTION PROPERTIES Use this code when plans are not available and the member cannot be measured because of embedment in concrete blast protection coverage or some similar situation 7 99 4 8 BRASS TRUSS 7 99 4 9 BRASS TRUSS BRASS TRUSS COMMAND DESCRIPTION COMMAND NAME LOCATION This command defines
92. enter line of the last main member to the edge ofthe bridge orto the center line ofthe next main member Main Member to Bridge Edge or Main Member Spacing 7 Enter the distance in feet from the center line of the last main member to the edge ofthe bridge or to the center line ofthe next main member Main Member to Bridge Edge or Main Member Spacing 8 If this measurement is to the edge of the bridge trailing zeros for the remaining parameters are not required 7 99 6 2 BRASS TRUSS EXAMPLE 1234567 MEMBER LAYOUT 4 5 60 45 FIGURES NOTES 7 99 6 3 BRASS TRUSS COMMAND NAME RAILWAY This command defines the maximum permitted railway speed PURPOSE the track radius and track super elevation when tracks are on the bridge This command is optional 3 COMMAND PARAMETERS Track Speed Enter the maximum permitted speed for the section of track when the track is in perfect condition no Slow Orders Speed is in Miles Per Hour Track Radius Enter the Center of track Radius in feet for any curved track on the bridge If the track alignment is straight enter 0 Super Elevation Enter the difference in elevation in inches between the tops of the rails ofthe track whose radius has been entered in TRACK RADIUS 7 99 6 4 BRASS TRUSS EXAMPLE 1234567 RAILWAY 40 0 0 FIGURES NOTES 7 99 6 5 BRASS TRUSS COMMAND NAME TRACK LAYOUT PURPOSE This command
93. es If there are no angles enter 0 Range 1 125 inches to 0 125 inches Web Plate Depth Enter the distance in inches from the bottom of the top flange plate to the top of the bottom flange plate This is commonly called the Back to Back of Angles dimension Maximum 50 inches Minimum 12 inches Web Plate Thickness Enter the thickness in inches of the full depth web plate Maximum 1 5 inches Minimum 0 18 inches Bottom Plate Width Enter the average width in inches ofall ofthe bottom plates of the floorbeam Range 30 inches to 5 inches and 0 Bottom Plate Thickness Enter the total thickness in inches of all of the bottom cover plates Range 4 inches to 0 18 inches and 0 7 99 9 10 BRASS TRUSS EXAMPLE 1234567 ISEC FLOORBEAM INTERMEDIATE 12 0 5 0 0 0 36 0 5 12 0 5 FIGURES Top Plate Width Plate Thickness ER Vertical Horizontal Width Width Web Thickness 2 Angle Q Thickness Y Plate Thickness Bottom Plate Width I SECTION NOTES 1 If there is deterioration of the floorbeams enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder of the second command enter the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the inform
94. f values If a section is not found in the library the program tries to find a section within Ye of the dimensions input Ifa section 15 not found an error message appears in the output 2 If a W section is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 8 and input the letter W followed by the weight per foot in Parameter 9 program will search the library for the first occurrence of the combination of depth and weight section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W and WN i e W24X76 and WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape designation to indicate a NEW shape In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in thelibrary See the example above Note A zero must be entered in Parameter 10 when an AISC shape is entered in Parameters 8 and 9 The shape you enter must exist in the standard shapes library stsect dat This library is a
95. g and licensing assistance may be obtained from Telephone 307 777 4489 E mail BRASSBilling wyo gov When requesting technical assistance please visit the incident tracking system at www wydot brass com Users without an account on the incident tracking system can request an account by clicking on the Open a Technical Support Account link button and e mailing the address or calling the phone number listed A username and password will be created and sent to the user With this system you may upload your data file and a description of the incident any error messages any bridge drawings and any hand computations which illustrate the concern An Incident number will be assigned to track the progress of resolving the incident 10 11 1 BRASS TRUSS How to Use this Manual The first sections of this manual are designed to act as a self help guide for the novice user and as a reference guide for the more experienced user In this manual TRUSS and BRASS all refer to BRASS TRUSSTM To the Novice Recommended reading is the General Information Section 1 and then a brief look through Section 3 Typical Commands Sets Next thirty minutes or more reviewing the rest of the manual section by section is recommended to get an idea ofthe types of commands available for defining a problem One or two commands should be studied in detail noting the format of the command description and the structure of the command and following parameter
96. ge of the left sidewalk if one is present See Figures for all dimensions Maximum 12 feet Minimum 0 feet Left Sidewalk Thickness Enter the sidewalk thickness in inches Maximum 18 inches Minimum 0 inches Left Sidewalk or Parapet Enter STEEL TIMBER CONCRETE GRATING Material ASPHALT or NONE No other words are acceptable Left Sidewalk Railing Material Enter ALUMINUM STEEL TIMBER CONCRETE or NONE No other words are acceptable Left Concrete Parapet Width Enter the average distance in feet from the inner face to the other face of the parapets Maximum 2 feet Minimum 0 feet Left Concrete Parapet Height Enter the distance in feet from the top of the deck or sidewalk to the top of the parapet Maximum 4 feet Minimum 0 feet 8 00 5 6 BRASS TRUSS EXAMPLE 1234567 LEFT SIDEWALK 0 0 NONE NONE 0 0 FIGURES Pavement Width OMEN A NC DE MM MO i Left Sidewalk Mi in Right Sidewalk Width 0 Width 0 Left Parapet Average Width Median Right Sidewalk Width Left Pavement Width Width Right Pavement Width iv TP eder LODS nts VAN Median Barrier Wearing Surface i beti Sidewalk Viddth em Right Sidewalk l Pavement Width Average Wearing Surface Thickness EM Left Sidewalk Width P Right Sidewalk Width o Pavement Width AE Ke ES Continue
97. gine To analyze astringer floorbeam truss system enter ratingst at the c truss exe gt prompt To analyze a girder floorbeam stringer system enter ratingsg at the c truss exe gt prompt Either analysis method will prompt the user for the same input data set filename and will append the results to the existing output file Optionally you may enter ratingst filename dat or ratingsg filename dat to bypass the screen prompt 8 00 1 4 BRASS TRUSS Bugs Gremlins and Other Problems Inevitably every user will have an input data set that will not run properly Based on past experience approximately 9096 of all problem logs are user error Naturally this should be the first place to look when BRASS won t run A lot of error and warning messages have been written into the source code to handle the most common errors It is nearly impossible to anticipate every error which may occur When searching for coding errors check the output file and or screen messages for clues to the problem Common error messages are Math Error or Divide by Zero Error These messages usually indicate that some required data was not input Check your input data set for omissions If you cannot resolve the problem you can request technical assistance using the procedures listed on page i 5 05 1 5 BRASS TRUSS The BRASS Suite BRASS is a suite of programs that assists the engineer in many aspects of bridge design an
98. he previous parameter Ending Span Number Beginning Span Identical If there are any other spans or rating units that are identical to Units the unit being rated enter the beginning span number of that unit or series of units It will not be necessary to rate these spans separately If none exist enter 0 Ending Span Identical Units If there are any other spans or rating units that are identical to the unit being rated enter the ending span number of that unit or series of units If there is only one span enter the same span number as entered in the previous parameter If 0 was entered in the previous parameter enter 0 here also Main Member Type Enter ARCH CULVERT FRAME GIRDER SUSPEN BOX I BEAM T BEAM SLAB or TRUSS The word GIRDER includes Rolled Beams as main members No other words are acceptable See Note on Page 1 2 for the definition of Main Member Enter S or C to indicate a simple span or a continuous span rating unit other letters are acceptable Any other characters will generate a Fatal Edit Message which will stop the run Design Type Enter the number of main members to be rated Up to three main members are allowed The presence of a number in this parameter indicates that commands are included in the data set for this rating unit If the main member data for the unit is not submitted enter the appro
99. hinge 74 NOTE When hinges are encountered with sliding members in the other chord enter at least one sliding member per hinge by adding the following line immediately after the description of sliding member s MEMBER MEMBER Word BIN I D TYPE HINGE See Example 7 99 10 9 BRASS TRUSS EXAMPLE 1234567 CONTINUOUS TRUSS SUPPORTS L00 115 130 145 1234567 11112 CBXO 0 170 0 15 3375 0 0 17 0 0 1234567 LIILI2 HINGE FIGURES For continuous trusses ignore the output entitled LEFT REACTION RIGHT REACTION This output is meant for simple span trusses only 7 99 10 10 BRASS TRUSS 7 99 10 11 BRASS TRUSS COMMAND NAME CBX or CBH This command defines truss members composed of channels and plates This command is required when channel members exist and may be repeated as often as needed to describe all the channel members PURPOSE Use the command or CBH The X or H are used to determine the Yield Strength for this member is to be used when the Yield Strength is the same as that listed on the STRESSES command or set by the Year of Original Construction parameter on the YEARS command is to be used when the Yield Strength is the same as that listed in the Hybrid Truss FY steel parameter on the STRESSES command 15 COMMAND PARAMETERS NOTE The following four parameters are placed BEFORE the
100. his command defines the concrete protection on the girder main member This command is optional 2 COMMAND PARAMETERS If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from the bottom of the concrete to the top of the concrete that is covering the bottom flange If ENCASED is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from the bottom ofthe concrete covering the bottom flange up to either the top of the encasement or the bottom of the concrete slab if the encasement extends up to it See Figures If BLAST is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from one side of the concrete covering the web to the other above the bottom flange If ENCASED is entered in the Type parameter on the CONCRETE DECK command enter the distance in inches from one side of the concrete to the other See Figures 11 8 BRASS TRUSS EXAMPLE 1234567 MAIN MEMBER CONCRETE PROTECTION 18 FIGURES ERCA SEC 7 99 11 9 BRASS TRUSS 460 BRASS TRUSS COMMAND NAME RIVETED PURPOSE This command defines the components of a riveted girder At least one girder type command is required 14 COMMAND PARAMETERS Span Number Enter the span number of the span being rated Range Range is defined as a portion or length of a span in feet for which there a
101. il Enter the distance in feet from the left edge of the bridge to the Track 4 inside face of the top portion of the left rail for each track For thru type of structures use the center line of the truss or girder as the edge ofthe bridge For deck structures with ties or some other type of track support use the left edge of this support If there are less than 4 tracks enter 0 where tracks do not exist Left Rail to Bridge Edge Enter the distance in feet from the inside face of the top portion of the left rail of the last track to the edge of the bridge NOTE If there is a middle main member measure up to that member on the first TRACK LAYOUT Start from the middle main member and continue on the second TRACK LAYOUT command This is commonly called the Gage Line 7 99 6 6 BRASS TRUSS EXAMPLE 1234567 TRACK LAYOUT 12 0 0 0 0 16 0 FIGURES NOTES 7 99 6 7 BRASS TRUSS COMMAND NAME UTILITIES This command is used to input utilities information If the PURPOSE utilities are embedded in the sidewalk slab do not enter them here note them in the COMMENTS This command is optional 8 COMMAND PARAMETERS Type Enter CABLE FLUID GAS or UNKN to identify the material carried in the conduits or pipes No other words are acceptable If there are more than one type repeat this command for each type Number Enter the number of each type of utility in a gr
102. ing the deck Maximum 9 feet Minimum 1 foot NOTE When there is no timber deck on top of timber girders enter 0 in all of the remaining fields and note on the COMMENTS command Depth Enter the depth in inches of the timbers that are used as deck members See Figures Maximum 18 inches Minimum 2 inches Enter the width in inches of the timbers Maximum 12 inches Minimum 0 75 inches Stress Grade If the stress grade in ksi was not zero on the STRESSES command and or the stress grade for the timber deck is different than the one given on the STRESSES command enter it here If the two values are equal or the value for the timber deck is unknown enter 0 7 99 7 8 BRASS TRUSS EXAMPLE 1234567 TIMBER DECK 5 5 85 5 5 0 FIGURES Sidewalk Width Sidewalk Thickness EU i TIMBER DECK NOTES 7 99 7 9 BRASS TRUSS COMMAND NAME STEEL SLEEPERS PURPOSE This command defines the steel sleepers on a bridge This command is optional 4 COMMAND PARAMETERS Span Enter the center to center distance in feet between the members supporting the sleepers See Figure Maximum 9 feet Minimum 1 foot For deterioration of the section enter the word RUST See Note 1 Depth Enter the depth in inches of the members that are used as the sleepers See Note 2 Maximum 12 inches Minimum 2 inches Flange Width Enter the width in inches of the fla
103. ired Required Optional Required Optional Optional T Only one command from this group can be used in a single data set t This command is required when a stringer is present At least one command from this group must be used in each data set 7 99 BRASS TRUSS 4 CODING INSTRUCTIONS FOR BRIDGE SUMMARY LIVE LOADS AND ALLOWABLE STRESSES 4 1 GENERAL INFORMATION These commands are intended to provide a record of the total number of spans on this project and what span if any were rated Each span or multiple rating unit is identified and it is noted how the span was rated If it was not rated a code is placed to explain the reason the unit could not be rated A rating unit is defined as a single span or a multi span continuous structure that the program can handle as one unit These commands also specify the live load and allowable stresses 7 99 4 1 BRASS TRUSS BRASS TRUSS COMMAND NAME SPANS This command defines the ramp attachment and the total number of spans or rating units to be rated This command is PURPOSE required REMEMBER All commands must be preceded by a seven digit numeric Bridge Identification Number greater than 1000000 followed by a space 3 COMMAND PARAMETERS Span Number For a ramp bridge only enter the Main Bridge span number that Ramp Bridge Only the ramp is attached to If there are no ramps enter 0 Ramp Letter For a ramp bridge only enter the ramp letter
104. ith the 0 Insert a space followed by the command after this parameter See Example Two letters are used to determine which way the channel flanges in box sections are pointing Enter for inward and for outward Do Not place a blank space between the command and this parameter Place a space after this parameter as usual See Example and Figure 1 Flange Orientation Continued 11 01 10 12 BRASS TRUSS COMMAND PARAMETERS Cont Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member is the same as these dimensions or the member is a diagonal enter 0 Member Length Top Plates Width Enter the width in inches of the continuous top plates or the top tie plates If lacing bars are used and there are no continuous top flange plates enter the out to out dimension of the channels See Figure 2 for all dimensions Maximum 30 inches Minimum 5 inches or 0 inches Enter the total thickness in inches of all the continuous top plates If there are no continuous top plates or if top lacing bars are used enter 0 Maximum 4 inches Minimum 0 18 inches or 0 inches Top Plates Thickness Enter the actual depth of channel in inches See Notes Maximum
105. left sidewalk stringer See Notes Maximum 37 inches Minimum 3 inches Member Flange Width Enter the flange width in inches If a channel or rolled beam section is specified on the As Built plans enter the letter W W Weight per Foot followed by the weight per foot from these plans See Notes Enter the width in inches oftimber members Maximum 17 inches Minimum 1 5 inches Member Flange Thickness Enter the average flange thickness in inches If the weight per foot was entered above or the type of supporting members is timber enter 0 Maximum 1 7 inches Minimum 0 inches Number of Members Enter the number of stringers supporting the left sidewalk NOTE For special loads in the sidewalk area trusses left in place that are carried by new thru or deck girders heavy utility vaults etc on bridge types that allow the use of stringers enter in the Type of Supporting Member parameter Enter 99 in the Member Depth parameters Enter W and the weight per foot needed to account for the actual sidewalk stringers if present plus the special load in the Member Flange Width parameter Enter 0 in the Member Flange Thickness parameter Enter 1 in the Number of Members parameter Note the actual conditions in the Comments 8 00 8 4 BRASS TRUSS EXAMPLE 1234567 LEFT SIDEWALK STRINGER ROLLED 18 W55 0 3 WN 18x55 First 18x55 section listed in sections library 123
106. mbination of depth and weight Note The use of the letter W does not restrict the user to W sections in the AISC Manual of Steel Construction The letter W 1s merely a flag to tell the program to search for a rolled section W section channel or angle If a section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W and WN 1 W24X76 and WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape designation to indicate a NEW shape In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in the library See the example above Note A zero must be entered in Parameter 4 when an AISC shape is entered in Parameters 2 and 3 The shape you enter must exist the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 8 6 BRASS TRUSS 8 00 8 7 BRASS TRUSS COMMAND NAME RIGHT SIDEWALK STRINGER PURPOSE This command defines the right sidewalk stringer on a bridge This command is optional S COMMAND PARAMETERS Typ
107. n feet between the curbs or the face of the railings parapets or other obstructions to the lateral movement of a vehicle on the bridge on the left of the median Use this parameter for bridges without medians See Figures Maximum 75 feet Minimum 8 feet Right Pavement Width Enter the distance in feet between the curbs or the face of the railings parapets or other obstructions to the lateral movement of a vehicle on the bridge on the right of the median If there is no median on the bridge enter 0 in this parameter See Figures Maximum 75 feet Minimum 0 feet 7 99 54 BRASS TRUSS EXAMPLE 1234567 PAVEMENT 24 0 0 FIGURES i Pavement Width d Left Sidewalk Right Sidewalk Width 0 Width 0 Median Right Sidewalk Width Right Pavement Width Median Thickness Left Sidewalk Width Left Pavement Width Width T Median Barrier Wearing Surface das Sidewalk Width Right Sidewalk Width Pavement Width gt lt gt J Average Wearing Thickness Left Sidewalk Width E d Right Sidewalk Width Pavement Width gt lt gt lt WIDTH MEASUREMENTS 7 99 5 5 BRASS TRUSS COMMAND NAME LEFT SIDEWALK PURPOSE This command defines the left sidewalk and or parapets on the deck This command is required 6 COMMAND PARAMETERS Left Sidewalk Width Enter the distance in feet from the curb line to the outside ed
108. nal unrusted or nondeteriorated sections as determined by the engineer in the field The tolerances for dimensioning are as follows Timber members Nearest 0 25 inches Concrete members Nearest 0 50 inches Asphalt Surfacing Nearest 0 50 inches Steel Rolled Sections Nearest 0 10 inches Widths amp Depths and Plates Nearest 0 05 inches Thickness Span Lengths and Roadway Dimensions Nearest 0 1 feet Deck Span Lengths Nearest 0 05 feet Input Format The commands guide the user in building an ASCII data file This data file is developed in a command format Each line begins with a Bridge Identification Number BIN followed by a command which describes up to 18 data entries hereinafter referred to as parameters The data may be entered as a real including a decimal integer excluding a decimal point or an alpha character Zero is not the same asa blank Alpha characters are case sensitive Default entries are given by omission of the command in those cases where all default values are desired To facilitate database functionality the BRIDGE INDENT NUMBER field must be used with all commands This numeric field must contain 7 characters and must be greater than 1000000 Spaces NOT COMMAS are used to delineate parameters The number of spaces between parameters has no meaning however do not use tabs to separate entries For example if the third entry of a command is the only entry required any of the following would
109. nches If the bottom of the concrete slab is flush with or below the top of the girder top flange or this space is not filled with concrete enter 0 Maximum 12 inches Minimum 0 inches See Figure 2 Number of Continuous Spans Enter the number of spans through which the girders are acting continuously Use 0 for a simple span Maximum 8 spans Minimum 0 spans 1 is not acceptable Spacing of Diaphragms or Knee Braces Enter the spacing in feet of any diaphragms or knee bracing If none exist enter 0 and note it in the COMMENTS command Continued 5 05 11 2 BRASS TRUSS COMMAND PARAMETERS Cont Compression Flange Restraint Enter YES or Y or N Nothing else is acceptable Use YES or Y if any of the following conditions exist 1 The presence of shear connectors 2 The girders are encased have blast protection or are enclosed by jack arch construction See Figure 3 3 Theconcrete deck extends down to the bottom ofthe top flange 4 Sleepers or grating is adequately attached to the top flange Use NO or N for ALL other conditions Number of Girders Enter the number of girders that support the bridge cross section Fascia Girder Overhang Enter the distance in feet from the centerline ofthe fascia girder to the outer most part of the deck sidewalk or parapet 7 99 11 3 BRASS TRUSS EXAMPLE 1234567 MAIN MEMBER THRU GIRDER WELDED EITHER 0
110. ner several rating units can be run together in a single input data set 7 99 4 11 BRASS TRUSS COMMAND NAME YEARS This command defines the year of original construction and the PURPOSE years replacement of members were performed These four digit years are used to define the allowable yield strength in the members This command is required S COMMAND PARAMETERS Year of Original Construction Enter the 4 digit year taken from erection plans bridge superstructure plans inventory file or other information considered to be reliable for the superstructure Replacement Dates Deck If the deck including sleepers if needed were replaced enter the 4 digit year of construction of the latest deck replacement Otherwise enter 0 See Notes Replacement Dates Stringers If the stringers were replaced enter the 4 digit year of construction ofthe latest stringer replacement Otherwise enter 0 See Notes Replacement Dates If the floorbeams were replaced enter the 4 digit year of Floorbeams construction of the latest floorbeam replacement Otherwise enter 0 See Notes Replacement Dates Main Members If the main members were replaced enter the 4 digit year of construction ofthe latest main member replacement Otherwise enter 0 See Notes 7 99 4 12 BRASS TRUSS EXAMPLE 1234567 YEARS 1923 1942 0 0 0 FIGURES If years are input for replacement dates the default values for yield s
111. nge s If a channel or or rolled beam section is specified on the As Built plans enter W Weight per Foot the letter W followed by the weight per foot from these plans See Note 2 Maximum 11 5 inches Minimum 1 5 inches Flange Thickness Enter the average thickness in inches of the flange s the weight per foot was entered above enter 0 Range 1 inch to 15 inch and 0 8 00 7 10 BRASS TRUSS EXAMPLE 1234567 STEEL SLEEPERS 4 5 10 3 033 0 436 Channel 1234567 STEEL SLEEPERS 4 5 18 55 0 WN18x55 First 18x55 section listed 1234567 STEEL SLEEPERS 4 5 18 6 000 0 691 W18x55 Second 18x55 section listed FIGURES Grating Deck A 1 1 1 U Steel Sleeper lt Stringers GRATING DECK WITH SLEEPERS NOTES 1 If there is any deterioration of any sleepers enter one command fully as normal Then repeat this command and enter the word RUST in the first parameter For the remainder of the second command enter the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 2 There are two ways the user can select a sleeper from the sections library 1 The user may input a section depth and flange width in Parameters
112. nter the panel point location for support 5 For simple trusses omit this command Panel Point Location Support 6 For continuous trusses enter the panel point location for support 6 For simple trusses omit this command Panel Point Location Hinge 1 Enter the panel point location for hinge 71 NOTE When hinges are encountered with sliding members in the other chord enter at least one sliding member per hinge by adding the following line immediately after the description of sliding member s MEMBER MEMBER Word BIN I D TYPE HINGE See Example Continued 7 99 10 8 BRASS TRUSS COMMAND PARAMETERS Cont Panel Point Location Enter the panel point location for hinge 72 Hinge 2 NOTE When hinges are encountered with sliding members in the other chord enter at least one sliding member per hinge by adding the following line immediately after the description of sliding member s MEMBER MEMBER Word BIN I D TYPE HINGE See Example Panel Point Location Enter the panel point location for hinge 33 Hinge 3 NOTE When hinges are encountered with sliding members in the other chord enter at least one sliding member per hinge by adding the following line immediately after the description of sliding member s MEMBER MEMBER Word BIN I D TYPE HINGE See Example Panel Point Location Hinge 4 Enter the panel point location for
113. ons or the member is a diagonal enter 0 Enter the number of elements that make up the member Maximum 9 Minimum 1 Enter the outside diameter in inches of the individual threaded elements at the threaded portions See Figures for all dimensions Maximum 4 inches Minimum 0 75 inches Enter either UPSET or CUT to describe the manner in which the threads are applied to the ends of the bars No other words are acceptable If this is a vertical member in a combination truss see Page 10 1 enter the distance in feet from the datum line to the bottom of this member preceeded with a blank space and a minus sign i e 5 Ifthe bottom of the vertical is above the datum line use a plus symbol 1 e 5 10 33 BRASS TRUSS EXAMPLE 1234567 101002 THREADED 2 125 CUT FIGURES n Diameter T END CONFIGURATION CUT Diameter a 11101 END CONFIGURATION UPSET 7 99 11 34 BRASS TRUSS 11 CODING INSTRUCTIONS FOR MAIN MEMBERS GIRDERS 11 1 GENERAL DETERIORATION INFORMATION FOR GIRDER MEMBERS If there is deterioration of any girder member fill out one command as you would normally for a girder member with the RANGE parameter used to signify the end of the deteriorated area The RANGE parameter from the normal command before this command will locate the beginning of the deteriorated area The next command will be the command with the deterioration data for the
114. oorbeam Stringer Bridges Truss Floorbeam Stringer Bridges INPUT COMMANDS Coding Instructions for Bridge Summary Live Loads and Allowable Stresses General Information Spans Command Date Command Bridge Command Location Command Years Command Truck Code Command Not yet operational Stresses Command Comments Command 5 Coding Instructions for Roadway Details Wearing Surface Command Pavement Command Left Sidewalk Command Right Sidewalk Command Median Command 6 Coding Instructions for Railway and Utilities Details Member Layout Command Railway Command Track Layout Command Utilities Command 7 Coding Instructions for Deck Cross section amp Sleepers General Information Concrete Deck Command Grating Deck Command Timber Deck Command Steel Sleepers Command Timber Sleepers Command iii Page 1 1 2 1 3 1 3 1 3 2 41 41 42 44 4 6 4 10 4 12 4 14 4 16 4 18 5 1 5 2 5 4 5 6 5 10 5 14 6 1 6 2 6 4 6 6 6 8 7 1 7 1 7 2 7 6 7 8 7 10 7 12 BRASS TRUSS SECTION 8 Coding Instructions for Secondary Members Stringers Secondary Member Longitudinal Stringer Command Left Sidewalk Stringer Command Right Sidewalk Stringer Command Concrete Protection Longitudinal Stringer Command Channel Stringer Fascia and Interior Command Rolled Stringer Fascia and Interior Command Timber Stringer Fascia and Interior Command SECTION 9 Coding Instruction for Secondary Members Floorbeams Second
115. ouping Diameter Enter the diameter in inches of the individual conduit or pipe used to carry the utility on the bridge Material Enter the kind of conduit or pipe used ALUMINUM STEEL and OTHER are the only acceptable words The word STEEL is to include cast iron and other similar weight metals Weight Per Foot Enter the weight per foot in pounds of each type and or size of utility if this value is known If it is unknown enter 0 This weight is for information only and is not used in computing superimposed dead loads Ifthe user wishes to include this dead load increase the weight of the Wearing Surface Member Providing Supported Enter one of the names listed below to describe the structural element of the bridge that receives the weight ofthe utility first Allowable names are FLOORBEAM INTERIOR STRINGER FASCIA STRINGER LEFT TRUSS RIGHT TRUSS LEFT GIRDER RIGHT GIRDER INTERIOR GIRDER FASCIA GIRDER or SLAB Distance from Main Member For a floorbeam enter the distance in feet from the main to be Rated to Location of member being rated to the location of the utility see Figure 1 Utility For an interior stringer or a fascia stringer enter the distance in feet from the stringer being rated to the location of the utility see Figure 2 For all other types of main members being rated enter 0 see Figures 3 and 4 For a floorbe
116. output file name i e filename out Optionally you may enter ratinged filename dat to bypass the screen prompt The ratinged command will check the validity of the input data set look for missing required commands check the ranges of key values and look for many common errors in the input data set There are two classifications of errors reported by ratinged FATAL EDITS and NON FATAL EDITS When ratinged detects a serious error or omission which would prevent execution a FATAL EDIT error message will be placed in the output file and the user will be unable to perform a girder or truss analysis When ratinged detects a particular value which is entered wrong or may be out ofan acceptable range a NON FATAL EDIT error message may be printed At this point the engineer may continue analysis or correct the error If ratinged is successful BRASS TRUSS will create three files filename out filename tel and filename pas If ratinged is not successful BRASS TRUSS will create filename out filename tel and filename err to help you debug the file Note BRASS TRUSS will not overwrite an existing output Therefore you will need to delete filename out and filename tel or rename filename out to another filename before re running ratinged Temporary files such as filename P AS filename FRC etc are created and deleted as TRUSS runs The second part of running BRASS TRUSS is selecting the desired analysis en
117. own enter 0 8 00 8 18 BRASS TRUSS EXAMPLE 1234567 TIMBER STRINGER FASCIA 18 9 0 1234567 TIMBER STRINGER ROT FIGURES Width lt gt Q TIMBER If there is a deterioration of any stringers enter one command fully as normal Then repeat this command and enter the word in the first parameter For the remainder of the second command enter the percentage of area loss for a particular element or the percentage of dimension loss for the appropriate element See Chapter 13 for a detailed explanation of the information required for deterioration 8 00 8 19 BRASS TRUSS 8 00 8 20 BRASS TRUSS 9 CODING INSTRUCTIONS FOR SECONDARY MEMBERS FLOORBEAMS 9 GENERAL INFORMATION If a TIMBER floorbeam is encountered enter it as an equal weight steel ISEC with only a WEB PLATE of equal depth Note the actual size of the COMMENTS command 7 99 9 1 BRASS TRUSS COMMAND NAME SECONDARY MEMBER TRANSVERSE FLOORBEAM PURPOSE This command defines the secondary member transverse floor beams This command is required 6 COMMAND PARAMETERS Enter the center to center distance in feet of the members supporting the floorbeams Maximum 60 feet Minimum 8 feet See Figure 1 Enter the distance in feet from the center of the member supporting the floorbeam to the outer extremity of the floorbeam for DECK Type Bridges For TRUSSES with
118. priate Non Rating Code See Notes Number of Main Members to be Rated Continued 8 00 4 6 BRASS TRUSS COMMAND PARAMETERS Cont Number of End Floorbeams Enter the number of end floorbeams A total of four floorbeams end and interior combined are allowed If the stringers rest directly on the abutment enter 0 If none are present enter 0 If the floorbeam data 1s not submitted enter the appropriate Non Rating Code See Notes Number of Interior Enter the number of interior floorbeams to be rated A total of Floorbeams four floorbeams end and interior combined are allowed Ifthe floorbeam data is not submitted enter the appropriate Non Rating Code See Notes Number of Exterior Fascia Enter the number of exterior fascia stringers A total of four Stringers stringers fascia and interior combined are allowed If the slab rests on a shelf angle on the main member of a THRU GIRDER bridge enter 0 For a multigirder unit or if none exist enter 0 If the stringer data is not submitted enter the appropriate Non Rating Code See Notes Number of Interior Stringers Enter the number of interior stringers to be rated A total of four stringers fascia and interior combined are allowed If the slab rests on a shelf angle on the main member of a THRU GIRDER bridge enter 0 For a multigirder unit or in none exist enter 0 If the stringer data is not submitted enter the appropriate Non Rating Code S
119. r parameters are placed BEFORE the command Member Beginning Location Enter the letter that corresponds to the vertical location of the Left or Top beginning of the truss member of this type U is for upper 15 for middle and L is for lower panel points there are more than 99 panels change the U to change to and change the L to for those members over 99 See Page 10 2 for numbering convention DO NOT place a blank space between this parameter and the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Left or Top location of the beginning of the truss member of this type Numbers less than ten start with the 0 DO NOT place a blank space between this parameter and the following parameter Member End Location Enter the letter that corresponds to the vertical location of the Right or Bottom end of the truss member of this type U is for upper M is for middle and L is for lower panel points If there are more than 99 panels change the U to change to and change the to for those members over 99 DO NOT place a blank space between this parameter and the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Right or Bottom location of the end of the truss member of this type Number less than ten star
120. re no changes in any elements of the girder The position of the range within the span is defined by giving the distance range from the support to the far end of the range In the case of a linear or parabolic variation in the web depth a range is the portion ofthe span for which the slope or parabolic constant remains constant Each span is to be treated separately Up to 30 ranges sections may be described with the last Range dimension equal to the span length Top Plates Width Enter the average width in inches of all the top flange plates See Figures for all dimensions Maximum 36 inches Minimum 8 inches or 0 Top Plates Thickness Enter the total thickness in inches of all the top flange plates Maximum 4 inches Minimum 0 18 inches or 0 Top Angles Width Horizontal Leg Enter the width in inches of the top flange angle leg that is attached to the top flange plate Maximum 9 inches Minimum 1 0 inches Top Angles Width Vertical Leg Enter the width in inches of the top flange angle leg that is attached to the web plate Maximum 9 inches Minimum 1 0 inches Top Angle Thickness Enter the thickness in inches of the top flange angle Maximum 1 125 inches Minimum 0 125 inches Web Plates Depth Enter the distance in inches back to back of the angle legs comprising the girder flanges Maximum 150 inches Minimum 24 inches See Figure Continued
121. s Each problem in TRUSS is made up ofa set of commands and associated parameters The next step recommended for the novice is to pick out a set of plans for a very simple bridge and code a set of commands A structure should be chosen which closely matches one of the Typical Command Sets The description of the Section in which the command resides should be read carefully These descriptions are on the first pages of each tabbed Section If the above procedure is followed the novice should be able to assemble a proper command set If the Command set does not work contact your BRASS Advisor To the User of Previous BRASS Versions BRASS TRUSS input is based on commands followed by up to 18 parameters The parameters can be integer or floating point contain a decimal and need only be separated by a space column location does not matter so the input is free format Note BRASS TRUSS uses spaces as delimiters not commas like the other BRASS programs Several ofthe examples should be studied to get an idea of how the command structure language appears We also suggest you read the Novice preceding this and follow the procedures as necessary 8 00 11 BRASS TRUSS TABLE OF CONTENTS TRUSS GIRDER FLOORBEAM STRINGER BRIDGE RATING PROGRAM SECTION SECTION SECTION SECTION SECTION SECTION SECTION 2 12 General Information 2 3 Command Description Index Typical Command Sets Girder Fl
122. s these dimensions or the member is a diagonal enter 0 Top Plates Width Enter the average width in inches of all the continuous top flange cover plates If none exist enter 0 See Figures for all dimensions Maximum 36 inches Minimum Rolled Beam Flange Width minus 2 inches or 0 Top Plates Thickness Enter the total thickness in inches of all the continuous top flange cover plates If none exist enter 0 Maximum 3 inches Minimum 0 5 inches or 0 Rolled Beam Depth Enter the depth in inches of the rolled beam See Notes Maximum 37 inches Minimum 5 inches Rolled Beam Flange Width Enter the width in inches of the rolled beam flange If the or rolled beam section is specified on the As Built plans enter W Weight per Foot the letter W followed by the weight per foot from these plans See Notes Maximum 23 inches Minimum 2 inches or Maximum 730 lbs Minimum 8 lbs Rolled Beam Enter the average thickness in inches ofthe rolled beam flange Flange Thickness If the weight per foot was entered under Rolled Beam Flange Width enter 0 Maximum 5 inches Minimum 0 18 inches or 0 Bottom Plates Width Enter the average width in inches of all the continuous bottom flange cover plates If none exist enter 0 Maximum 36 inches Minimum Rolled Beam Flange Width minus 2 inches or 0 Bottom Plates Thickness Enter the total thickness in inches ofall the continuous bottom flange
123. section will be selected The letter W is merely a flag to tell the program to search for a rolled channel section If a section 1s not found an error message appears in the output The shape you enter must exist in the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 9 7 BRASS TRUSS COMMAND NAME ROLLED FLOORBEAM This command defines rolled beam floorbeams At least one PURPOSE type of FLOORBEAM command is required This command may be repeated to define an end and intermediate floorbeam 8 COMMAND PARAMETERS Location Enter the location of the floorbeam being defined Only the words END or INTERMEDIATE are allowed For deterioration of the section enter the word RUST See Note 1 Depth Flange Width Enter the flange width in inches ofthe rolled beam floorbeam or If the rolled beam section is specified on the As Built plans W Weight per Foot enter the letter W followed by the weight per foot from these plans See Note 2 Maximum 18 inches Minimum 2 inches or Maximum 730 Ibs Minimum 5 1 Ibs Enter the depth in inches of the rolled beam floorbeam See Note 2 Maximum 37 inches Minimum 3 inches Flange Thickness Enter the average flange thickness in inches ofthe rolled beam floorbeam If the weight per foot was entered in Flange Wi
124. sed If the TIMBER DECK command is used either SLEEPERS command may be used 7 1 BRASS TRUSS COMMAND NAME CONCRETE DECK PURPOSE This command defines the concrete deck on a bridge At least one type of DECK command is required 7 COMMAND PARAMETERS Span Enter the center to center distance in feet between the members supporting the deck Enter 0 for reinforced concrete slab bridges Maximum 30 feet Minimum 0 feet Depth Enter the distance in inches from the top of the structural concrete deck to the underside of a flat deck or to the crown of a jack arch deck If there is a wearing surface thickness that is unknown use the total thickness from the roadway to the bottom of the deck For Stay in Place SIP forms measure the depth from the top of the SIP Forms See Figure 1 Range 24 inches to 5 inches and 0 Enter FLAT ENCASED SIP NONE or JACK in this parameter No other words are acceptable A slab spanning between concrete members is considered FLAT See Figures 2 and 3 If an asphalt wearing surface over corrugated metal is used as a deck use this command The depth is taken from the top ofthe asphalt to the lower surface of the corrugated metal The type is FLAT and note this on the COMMENTS command For BLAST ENCASED or JACK the CONCRETE PROTECTION command is to be used to determine the proper size of each profile NO
125. struction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence of the combination of depth and weight Note The use of the letter W does not restrict the user to W sections in the AISC Manual of Steel Construction The letter W 1s merely a flag to tell the program to search for a rolled section W section channel or angle If a section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W and WN 1 e W24X76 and WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape designation to indicate a NEW shape In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in thelibrary Seethe example above Note zero must be entered in Parameter 4 when an AISC shape is entered in Parameters 2 and 3 The shape you enter must exist the standard shapes library stsect dat This library is a binary file and is not easily readable An ASCII copy of this file has been placed on the FTP Server for viewing 8 00 8 10 BRASS TRUSS 8 00 8 11 BRASS TRUSS
126. t a section depth and flange width in Parameters 2 and 3 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within Ye of the dimensions input If a section is not found an error message appears in the output 2 If a W section is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 2 and input the letter W followed by the weight per foot in Parameter 3 The program will search the library for the first occurrence of the combination of depth and weight Ifa section is not found an error message appears in the output Note In the standard sections library some standard shapes begin with W and WN i e W24X76 WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape designation to indicate a NEW shape In the event the user wishes to select the second occurrence of a section listed in the library use the first method described above and input the specific flange width as it appears in the library See the example above Note A zero must be entered in Parameter 4 when an
127. t with the 0 Insert a space followed by the command after this parameter See Example Continued 11 01 10 16 BRASS TRUSS COMMAND PARAMETERS Cont Flange Orientation Two letters are used to determine which way the horizontal angles in box sections are pointing Enter for inward and for outward DO NOT place a blank space between the command and this parameter Place a space after this parameter as usual See Example and Figure 1 Member Length Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member is the same as these dimensions or the member is a diagonal enter 0 Top Plates Width Enter the width in inches ofthe continuous top plates or top tie plates If lacing bars are used and there are no continuous top flange plates enter the out to out dimension of the top angles See Figure 2 for all dimensions Maximum 50 inches Minimum 5 inches or 0 Top Plates Thickness Enter the total thickness in inches of all the continuous top plates If there no continuous top plates or if top lacing bars are used enter 0 Maximum 4 inches Minimum 0 18 inches or 0 Top Angles Width Enter the width in inches of the top angle leg that is attached Horizontal Leg to the top pla
128. tes If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Top Angles Width Enter the width in inches of the top angle leg that is attached Vertical Leg to the web plate If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Top Angles Thickness Enter the thickness in inches of the top angle If there are angles enter 0 Maximum 1 125 inches Minimum 0 125 inches or 0 Web Plates Depth Enter the back to back distance in inches between the top or bottom angles Ifthere are no angles enter the depth ofthe web plate Maximum 60 inches Minimum 5 inches or 0 Web Plates Thickness Enter the thickness of the full depth continuous web plates If there are no full depth continuous web plates or if lacing bars are used enter 0 Maximum 4 inches Minimum 0 18 inches or 0 Bottom Angles Width Horizontal Leg Enter the width in inches of the bottom angle leg that 15 attached to the bottom plates If there are no angles enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Continued 7 99 10 17 BRASS TRUSS COMMAND PARAMETERS Cont Bottom Angles Width Vertical Leg Bottom Angles Thickness Bottom Plates Width Bottom Plates Thickness Drop Distance From Datum 11 01 Enter the width in inches of the bottom angle leg that is attached to the web plates If there are no angles enter 0 Maximum 9 inches
129. the following parameter Member Panel Point Enter the two digit number that corresponds to the horizontal Left or Top location of the beginning of the truss member of this type Numbers less than ten start with the 0 DO NOT place a blank space between this parameter and the following parameter Member End Location Right or Bottom Enter the letter that corresponds to the vertical location ofthe end of the truss member of this type U is for upper is for middle and L is for lower panel points If there more than 99 panels change the U to change to and change the to for those members over 99 DO NOT place a blank space between this parameter and the following parameter Continued 11 01 10 24 BRASS TRUSS COMMAND PARAMETERS Cont Member Panel Point Right Enter the two digit number that corresponds to the horizontal or Bottom location of the end of the truss member of this type Numbers less than ten start with the 0 Insert a space followed by the command after this parameter Place a space after this command as usual See Example Member Length Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member is the same as these
130. the horizontal Top location of the beginning of the truss member of this type Numbers less than ten start with the 0 DO NOT place a blank space between this parameter and the following parameter Member End Location Right or Bottom Enter the letter that corresponds to the vertical location ofthe end of the truss member of this type U is for upper is for middle and L is for lower panel points If there more than 99 panels change the U to change to and change the L to B for those member over 99 DO NOT place a blank space between this parameter and the following parameter Continued 11 01 10 32 BRASS TRUSS COMMAND PARAMETERS Cont Member Panel Point Right or Bottom Member Length Number of Bars Outside Thread Diameter End Configuration Drop Distance From Datum 11 01 Enter the two digit number that corresponds to the horizontal location of the end of the truss member of this type Numbers less than ten start with 0 Insert a space followed by the command after this parameter Place a space after this command as usual See Example Enter the length in feet of any vertical or horizontal member of this type whose length is different than the Panel Height or Panel Length dimensions respectively that were given on the MAIN MEMBER TRUSS command If the length of any vertical or horizontal member is the same as these dimensi
131. to Main Member Enter the distance in feet from the left edge of the bridge to the center line of the left main member For thru type structures this dimension will probably be 0 For deck structures with ties or some other type of track support use the left edge of this support Enter the distance in feet between the center lines of the main members Main Member Spacing 71 Main Member to Bridge Edge Enter the distance in feet from the center line of the last main or Main Member Spacing 2 member to the edge of the bridge or to the center line ofthe next main member Main Member to Bridge Edge Enter the distance in feet from the center line of the last main or Main Member Spacing 3 member to the edge ofthe bridge or to the center line of the next main member Main Member to Bridge Edge Enter the distance in feet from the center line ofthe last main or Main Member Spacing 4 member to the edge ofthe bridge or to the center line of the next main member Main Member to Bridge Edge Enter the distance in feet from the center line of the last main or Main Member Spacing 5 member to the edge of the bridge or to the center line ofthe next main member Main Member to Bridge Edge Enter the distance in feet from the center line of the last main or Main Member Spacing 6 member to the edge ofthe bridge or to the center line of the next main member Enter the distance in feet from the c
132. tresses will override any value entered in the STRESSES command 7 99 4 13 BRASS TRUSS COMMAND NAME TRUCK CODE NOTE This command is not yet operational This command defines truck loads by a truck code This truck PURPOSE code must have been previously stored in the Truck Library along with axle weight and spacing data defining the truck See command 600 for an explanation of printing the Truck Library This command is optional However if this command is used it must be repeated to define a total of five trucks 1 COMMAND PARAMETER Truck Code Enter the truck code to be applied to the structure Repeat this command for 4 additional trucks IMPORTANT If this command is used it must be repeated to define a total of five trucks See Notes 7 99 4 14 BRASS TRUSS EXAMPLE This command is not yet operational 1234567 TRUCK CODE HS20T 1234567 TRUCK CODE 20 1234567 TRUCK CODE 1234567 TRUCK CODE ATYPE3S2 1234567 TRUCK CODE ATYPE3 3 One truck per line Repeat as necessary FIGURES ATYPE3 3 19 Jaj 10 2 4 gt lt 8 000 31 000 14 000 28000 TYPE 3 TYPE 352 EE z x 15 4 Maas 29 4 8 000 36 000 7 900 36 000 36 000 vores o For HS vehicles having a variable axle spacing the shortest distance will be used If this command is omitted the following trucks will be analyzed HS20T H20T
133. ultiplied by 0 55 for inventory stress level and by 0 75 for operating stress level Reference material for these stresses are found in the following specifications A A S H T O A LS C A S T M Fastener Diameter Enter the diameter of the fasteners used to fabricate the individual member in inches This is NOT the fasteners used in the connections If this cannot be determined enter 0 Zero and 7 8 diameter fasteners will be assumed Diameters availableare 1 125 1 000 0 875 0 750 0 625 and 0 500 only No other values are acceptable Hybrid Truss Fy Steel Ifthere are two steel types used on a Truss enter the higher steel yield strength in ksi 7 99 4 16 BRASS TRUSS EXAMPLE 1234567 STRESSES 33 0 33 0 2 70 0 0 875 33 0 FIGURES 7 99 Steel Yield Strength Defaults Fy YEAR 1900 1900 1904 1905 1935 1936 1962 1963 2050 4 17 Fy ksi 23 26 30 33 36 BRASS TRUSS 80 BRASS TRUSS COMMAND NAME COMMENTS The COMMENTS command may be used to document information concerning this bridge and to list information that PURPOSE cannot be recorded on any other command This command may be repeated up to 999 times and may be placed anywhere in the data set prior to the commands given in Chapter 10 1 COMMAND PARAMETER Comments Each comment may contain up to 60 characters of descriptive data 7 99 4 18 BRASS TRUSS EXAMPLE 1234567 COMMENTS BR OVER
134. umber of vertical rows of connectors either 2 or Number of Rows 4 that pass through the web of the supporting member Main Member Fastener Diameter Enter the diameter of the fasteners that pass through the web of the supporting member in decimals of an inch Maximum 1 25 inches Minimum 0 625 inches Continued 7 99 12 4 BRASS TRUSS COMMAND PARAMETERS Cont Shelf Angle Width Ifa shelf angle is present enter the width ofthe leg that is under Outside Leg the connecting member in inches Otherwise enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Shelf Angle Width If a shelf angle is present enter the width of the leg that is Other Leg against the web of the supporting member in inches Otherwise enter 0 Maximum 9 inches Minimum 1 0 inches or 0 Shelf Angle Thickness If a shelf angle is present enter the thickness in inches Otherwise enter 0 Maximum 1 125 inches Minimum 0 125 inches or 0 NOTE If the fastener pattern is irregular do not rate the connection Enter UNRA on the BRIDGE command and mention this on the COMMENTS command 7 99 12 5 BRASS TRUSS EXAMPLE 1234567 FRAMED DETAILS 2 0 4 0 6 0 0 50 90 2 0 075 9 0 2 0 075 00 0 FIGURES A Framing Angle Connecting Zi Member Main Member Shelf Angle 7 N p SECTION A A Connection information is entered for informational purposes only
135. up to 3 Main Members per Rating Unit There must be 3 or less Main Members in the Bridge Cross section Floorbeams up to 4 per Rating Unit Stringers up to 4 per Rating Unit Sleepers up to 2 per Rating Unit Connections up to 4 per Rating Unit b Thru Girders up to 3 Main Members per Rating Unit There must be 3 or less Main Members in the Bridge Cross section Floorbeams up to 4 per Rating Unit Stringers up to 4 per Rating Unit Sleepers up to 2 per Rating Unit Connections up to 4 per Rating Unit 2 Steel Trusses Simple or up to 13 spans continuous There must be 3 or less Main Members in the Bridge Cross section a Deck Trusses up to 3 Main Members Per Rating Unit Floorbeams up to 4 per Rating Unit Stringers up to 4 per Rating Unit Sleepers up to 2 per Rating Unit Connections up to 4 per Rating Unit b Pony Trusses up to 3 Main Members per Rating Unit Floorbeams up to 4 per Rating Unit Stringers up to 4 per Rating Unit Sleepers up to 2 per Rating Unit Connections up to 4 per Rating Unit c Thru Trusses up to 3 Main Members per Rating Unit Floorbeams up to 4 per Rating Unit Stringers up to 4 per Rating Unit Sleepers up to 2 per Rating Unit Connections up to 4 per Rating Unit A Main Member is defined as the truss unit as a whole or the main steel girder Deck or Thru In the event the left or right or middle trusses or girders differ BRASS
136. user can select a rolled beam girder from the sections library 1 The user may input a section depth and flange width in Parameters 5 and 6 The program will search the library for the first occurrence of this combination of values If a section is not found in the library the program tries to find a section within 1 of the dimensions input If a section is not found an error message appears in the output 2 If a W section is specified on the As Built plans the user may input a one or two digit integer section depth corresponding to the beam depth as listed under Designation in the AISC Manual of Steel Construction in Parameter 5 and input the letter W followed by the weight per foot in Parameter 6 program will search the library for the first occurrence of the combination of depth and weight If a section is not found an error message appears in the output In this case enter the beam as WELDED and enter the web thickness If the web thickness is not input BRASS TRUSSTM wil assume the web thickness to be 0 678 x Flange Thickness Note In the standard sections library some standard shapes begin with W and WN i e W24X76 WN24X76 In 1985 AISC changed the dimensions of several steel shapes while keeping the same designation To differentiate between the two types especially when the older shape is needed to perform a rating an N was added to the shape designation to indicate a NEW shape

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BrassTruss 2.1.2 UserManual_Sept 2012

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