D4.E.7 Design Parameters
The design parameters outlined in the following table 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 

CODE 
Must be specified as CANADIAN for S1614. Must be specified as CANADIAN 2009 for S1609. Design code to follow. See TR.48.1 Parameter Specifications. 

BEAM  1.0 
Used to specify locations along member length considered for design:

CB  0.0  Value of ω_{2} (code Cl 13.6) to be used for calculations. ω_{2} is calculated internally if CB is 0.0 or not provided. 
CMY  ω_{1} calculated as per clause number 13.8.5 (a) 
ω_{1}
in local Y direction for the member. The
program calculated value of ω_{1}
depends
on whether the member is subjected to any transverse load or not:
STAAD.Pro will calculate ω_{1} based on the formula specified in 13.8.5 (a) unless you directly specify a value. You may specify any value between 0.4 to 1 for ω_{1} . 
CMZ  ω_{1} calculated as per clause number 13.8.5 (a) 
ω_{1}
in local Z direction for the member. The
program calculated value of ω_{1}
depends
on whether the member is subjected to any transverse load or not:
STAAD.Pro will calculate ω_{1} based on the formula specified in 13.8.5 (a) unless you directly specify a value. You may specify any value between 0.4 to 1 for ω_{1} . 
CPSACING  0.0  Spacing between connectors of builtup members required for slenderness ratio calculation per Cl. 19.1.4. 
DFF  None(Mandatory for deflection check)  "Deflection Length"/Maxmimum Allowable local deflection. 
DJ1  Start Joint of member  Joint No. denoting start point for calculation of "Deflection Length" 
DJ2  End Joint of member  Joint No. denoting end point for calculation of "Deflection Length" 
DMAX  45.0 in.  Maximum allowable depth (Applicable for member selection) 
DMIN  0.0 in.  Minimum required depth (Applicable for member selection) 
FLX  0 
Parameter for specifying the flexuraltorsional restraint condition.

FU  345.0 MPa  Ultimate strength of steel. 
FYLD  300.0 MPa  Yield strength of steel. 
KT  1.0  K value for flexural torsional buckling. 
KY  1.0  K value for general column flexural buckling about the local Yaxis. Used to calculate slenderness ratio. 
KZ  1.0  K value for general column flexural buckling about the local Zaxis. Used to calculate slenderness ratio. 
LAT  0 
Specify lateral support conditions:

LEG  0 
This parameter is meant for plain angles (clause 13.3.3.2).

LT  Member Length  Length for flexural torsional buckling. 
LY  Member Length  Length for general column flexural buckling about the local Yaxis. Used to calculate slenderness ratio. 
LZ  Member Length  Length for general column flexural buckling about the local Zaxis. Used to calculate slenderness ratio. 
MAIN  200  Allowable slenderness limit for compression members. 
NCR  0  This parameter sets the
n factor to calculate Cr value as per clause number 13.3.1
Notes:

NSF  1.0  Net section factor for tension members. 
PROFILE    Used in member selection. Refer to TR.48.1 Parameter Specifications for details. 
RATIO  1.0  Permissible ratio of actual load effect to the design strength. 
SNUG  1 
Specify type of connection for the builtup members (Refer to Cl. 19.1.4):

SSY  0 

SSZ  0 

STIFF  Member length of depth of beam, whichever is lesser.  Spacing of traverse stiffeners. 
STP  1 

TRACK  0.0 
Design output:

UNB  Member Length  Unsupported length in bending compression of the bottom flange for calculating moment resistance. 
UNT  Member Length  Unsupported length in bending compression of the top flange for calculating moment resistance. 