D1.K.2.3 Design Parameters
The program contains a large number of parameter names which are required to perform design and code checks. These parameter names, with their default values, are listed in the following table.
The default parameter values have been selected such that they are frequently used numbers for conventional design. Depending on the particular design requirements for an analysis, some or all of these parameter values may have to be changed to exactly model the physical structure
Parameter Name  Default Value  Description 

CODE   
Must be specified as AISC N690 1984 to use the ANSI/AISC N6901984 code for checking purposes. Design code to follow. See TR.48.1 Parameter Specifications. 
CAN  0 
Used for Deflection Check only.

CB  1.0 
Bending coefficient dependent upon moment gradient 0.0 = CB is calculated itself Any other userdefined value is accepted. 
CMY CMZ 
0.85 for sidesway and calculated for no sidesway  Cm value in local y & z axes 
CT  0.75  Reduction Coefficient in computing net effective net area of an axially loaded tension member. 
DFF  None(Mandatory for deflection check)  "Deflection Length" / Maximum allowable local deflection 
DJ1  Start Jointof member  Joint No. denoting starting point for calculation of "Deflection Length" 
DJ2  End Joint of member  Joint No. denoting end point for calculation of "Deflection Length" 
DMAX  45 inch  Maximum allowable depth 
DMIN  0.0 inch  Minimum allowable depth 
FU  60 KSI  Ultimate tensile strength of steel in current units. 
FYLD  36 KSI  Yield strength of steel in current units. 
KY  1.0  Effective Length Factor for Compression in local yaxis. Usually, this is minor axis. 
KZ  1.0  Effective Length Factor for Compression in local zaxis. Usually, this is major axis. 
LY  Member Length  Length to calculate slenderness ratio for buckling about local Y axis. 
LZ  Member Length  Same as above except in zaxis (major). 
MAIN  0.0 
Design for slenderness.

NSF  1.0  Net section Factor for tension members 
PROFILE  None 
Used to search for the lightest section for the profile(s) specified for member selection. See TR.48.1 Parameter Specifications for details. 
RATIO  1.0  Permissible ratio of the actual to allowable stresses. 
SFC  1.0  Stress limit coefficient for compression (SLC) as found in Table Q 1.5.7.1. 
SFT  1.0  Stress limit coefficient for tension (SLC) as found in Table Q 1.5.7.1. 
SMY  1.0  Stress limit coefficient for minor axis bending (SLC) as found in Table Q 1.5.7.1. 
SMZ  1.0  Stress limit coefficient for major axis bending (SLC) as found in Table Q 1.5.7.1. 
STIFF  Member length or depth whichever is greater  Spacing of stiffeners for plate girder design 
STYPE  0.0 
Steel type:

TMAIN 
240 for main member 300 for "Truss" member 
Slenderness limit under tension 
TRACK  0.0 
Controls the levels of detail to which results are reported.

UNB  Member Length  Unsupported length of the bottom* flange for calculating allowable bending compressive stress. Will be used only if flexural compression on the bottom flange. 
UNT  Member Length  Unsupported length of the top* flange for calculating allowable bending compressive stress. Will be used only if flexural compression on the top flange. 