D14.C.7 Design Parameters
The design parameters outlined in table below may be used to control the design procedure. These parameters communicate design decisions from the engineer to the program and thus allow the engineer to control the design process to suit an application's specific needs.
The default parameter values have been selected such that they are frequently used numbers for conventional design. Depending on the particular design requirements, some or all of these parameter values may be changed to exactly model the physical structure.
|Parameter Name||Default Value||Description|
Must be specified SANS10162-1: 2011.
Design code to follow. See TR.48.1 Parameter Specifications.
0 - Perform design at ends and those locations specified in the section command.
1 - Perform design at ends and 1/12th section locations along member length.
Deflection check for cantilever members.
Greater than 0.0 and less than 2.5,Value of ω2 (C1.13.6) to be used for calculation
Equal to 0.0: Calculate ω2
|CMY||1.0||Values between 0.4 – 1 used for ω1y (C184.108.40.206). Input beyond the values consider as 1.|
|CMZ||1.0||Values between 0.4 – 1 used for ω1z (C220.127.116.11). Input beyond the values consider as 1.|
|DFF||0||Default is 0 indicating that deflection check is not performed|
|DJ1||0||Start node of physical member for determining deflected pattern for deflection check and should be set along with DFF parameter|
|DJ2||0||End node of physical member for determining deflected pattern for deflection check and should be set along with DFF parameter|
|DMAX||1,000||Maximum allowable depth|
|DMIN||0||Minimum required depth|
|FU||345 Mpa||Ultimate strength of steel|
|FYLD||300 Mpa||Yield strength of steel|
|KT||1.0||K value for flexural torsional buckling|
|KY||1.0||K value in local Y-axis, usually minor axis|
|KZ||1.0||K value in local Z-axis, usually major axis|
|LT||Member length||Length for flexural torsional buckling|
|LY||Member length||Length in local Y axis for slenderness value KL/r|
|LZ||Member length||Length in local Z axis for slenderness value KL/r|
Flag for controlling slenderness check
|NSF||1.0||Net section factor for tension members|
Permissible ratio of applied load to section capacity
Used in altering the RHS of critical interaction equations
|STIFF||Member length||Center-to-center distance between transverse web stiffeners.|
|UNB||Member Length||Unsupported length in bending compression of bottom flange for calculating moment resistance|
|UNT||Member Length||Unsupported length in bending compression of top flange for calculating moment resistance|