D8.C.4 Design Parameters
The following table contains the input parameters for specifying values of design variables and selection of design options.
Parameter Name  Default Value  Description 

CODE    Must be specified as IS801
Design code to follow. See TR.48.1 Parameter Specifications. 
BEAM 
1.0 
When this parameter is set to

CB  0  Bending coefficient Cb used for bending checks. By default (value of 0), this is calculated by the program. 
CMY  calculated  Coefficient Cm as per Cl. 6.7 for bending about the member Y axis. See IS:8011975, 6.7. Used for Combined axial load and bending design. Values range from 0.4 to 1.0. 
CMZ  calculated  Coefficient Cm as per Cl. 6.7 for bending about the member Z axis. See IS:8011975, 6.7. Used for Combined axial load and bending design. Values range from 0.4 to 1.0. 
CWY  0 
Specifies whether the cold work of forming strengthening effect should be included in resistance computation. See IS:8011975, 6.1.1

FLX  0 
Specifies whether the member has torsionalflexural buckling restraints that will in turn determine whether the member is susceptible to flexuraltorsional bucking mode. See IS:8011975, 6.6.1

FU 
450 MPa (4588.72 kg/cm^{2}) 
Ultimate tensile strength of steel in current units. 
FYLD 
353.04 MPa (3600.0 kg/cm^{2}) 
Yield strength of steel in current units. 
KX  1.0  Effective length factor for torsional buckling. It is a fraction and is unitless. Values can range from 0.01 (for a column completely prevented from buckling) to any user specified large value. It is used to compute the KL/R ratio for twisting for determining the capacity in axial compression. 
KY  1.0  Effective length factor for overall buckling about the local Yaxis. It is a fraction and is unitless. Values can range from 0.01 (for a column completely prevented from buckling) to any user specified large value. It is used to compute the KL/R ratio for determining the capacity in axial compression. 
KZ  1.0  Effective length factor for overall buckling in the local Zaxis. It is a fraction and is unitless. Values can range from 0.01 (for a member completely prevented from buckling) to any user specified large value. It is used to compute the KL/R ratio for determining the capacity in axial compression. 
LX  Member length  Unbraced length for twisting. It is input in the current units of length. Values can range from 0.01 (for a member completely prevented from torsional buckling) to any user specified large value. It is used to compute the KL/R ratio for twisting for determining the capacity in axial compression. 
LY  Member length  Effective length for overall buckling in the local Yaxis. It is input in the current units of length. Values can range from 0.01 (for a member completely prevented from buckling) to any user specified large value. It is used to compute the KL/R ratio for determining the capacity in axial compression. 
LZ  Member length  Effective length for overall buckling in the local Zaxis. It is input in the current units of length. Values can range from 0.01 (for a member completely prevented from buckling) to any user specified large value. It is used to compute the KL/R ratio for determining the capacity in axial compression. 
NSF  1.0  Net section factor for tension members. The net area is calculated as NSF×gross area. 
RATIO  1.0  Permissible ratio of actual to allowable stresses 
TRACK  0 
This parameter is used to control the level of detail in which the design output is reported in the output file. The allowable values are:

TSA  0 
Specifies whether transverse web stiffeners have been provided to check for the requirements of IS:8011975, 5.2.4.

UNL  Member length  Unsupported length (in current units) for calculating the allowable bending stress. 