NAVIGATING THE NEW AISC. STEEL CONSTRUCTION MANUAL. Presented by Cynthia J. Duncan, AISC. Structures Congress 2017. Committee on Manuals. Update and maintain AISC manuals and accompanying design examples in response to revisions in AISC standards and inquiries from within the Committee and the steel construction industry.
Similarly,L505010 = L 5 x 5 x 5/8 andL904016 = L 9 x 4 x 1At present, there are two ways to define the local y andz-axes for an angle section. To make the transition from the AISC Manual to theprogram data easy, the standard section for an angle is specified:51 52 53 TA ST L40356This specification has the local z-axis (i.e., the minoraxis) corresponding to the Z-Z axis specified in the steel tables. Manyengineers are familiar with a convention used by some other programs in whichthe local y-axis is the minor axis.
STAAD provides for this convention byaccepting the command:54 55 56 TA RA L40356.
AISC Library AISC LibrarySection 1. IntroductionThe AISC Section Properties database (aiscrev9.dbf)file contains the section properties as described in the AISC manuals.The database file has 3 fields. The first field contains the name of thesection (see Section 3) and has a width of 30 characters.
The second field(width: 12) describes the property that is assigned to this name. Section2 describes the symbols used in the second field. The third field (width:50) contains the value of this property.There are five general types of sections contained in the file:.Type 1: W, M, S and HP Shapes (I shapes).Type 2: C and MC Shapes (channels).Type 3: WT, MT and ST Shapes (tee sections).Type 4: TS, L and 2L Shapes (structural tubing, singleand double angles).Type 5: Pipe ShapesSection 2.
Variable ExplanationsAll dimensions are in inches and kips. These variables are taken fromthe AISC manuals. These values will NOT be scaled to the unit system ofyour model if you are using a unit other than inch for length or poundfor force. A:Area BF:Width of flange BTF:'bf/2tf', the ratio of the flange width to twice theflange thickness CW:Cw, warping constant D:Depth, actual DAF:'d/Af', the ratio of the depth to the compression flange area DI:Inner diameter of pipe DN:Nominal depth. Nominal Diameter in case of pipe sections (P, PX, PXX) DSG:Shape designation, i.e.
'W' or 'C' DTW:'d/tw', the ratio of the depth to the web thickness EO:'eo', distance from outside face of web to shear center FYP: 'Fy ' ', the theoreticalmaximum yield stress based on the width-thickness ratio of 1/2 the unstiffenedcompression flange, beyond which a particular shape is not compact. (Specifiedas 0 if greater than 65 ksi) FYPPPA: 'Fy ' '(ASD), thetheoretical maximum yield stress based on the depth-thickness ratio ofthe web below which a particular shape may be considered compact for anycondition of combined bending and axial stresses. (Specified as 0 if greaterthan 65 ksi) FYPPPL:'Fy ' ' (LRFD), See above. H:'H', flexural constant LRFD Formula (A-E3-9) H38:'H', flexural constant, double angles 3/8' backto back H34:'H', flexural constant, double angles 3/4' backto back HL:Horizontal leg or side dimension HTW:'hc/tw', ratio of assumed web depth for stability tothickness of web JSHP:JUMBO SHAPE ('J'), See the note at the end of the variablelist.
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