D1.I.2.3 Design Parameters

These parameters may be used to control the design process to suit specific modeling needs. The default parameter values have been selected such that they are frequently used numbers for conventional design.

Table 1. Steel Design Parameters for ASCE (Pub. 52) Based Design
Parameter Name	Default Value	Description
CODE	-	Must be specified as `ASCE 52`. Design code to follow. See TR.53.2 Concrete Design-Parameter Specification.
BEAM	0.0	Specifies locations along member length at which member design is designed. 0) use the section locations specified according to the SECTION command 1) at the ends and eleven intermediate sections of the beam
DBL	0.75 in.	Diameter of bolt for calculation of number of bolts required and the net section factor.
DMAX	45.0 in.	Maximum allowable depth for member selection
DMIN	0.0 in.	Minimum allowable depth for member selection
ELA	4	Indicates what type of end conditions are to be used from among Equations 4.7-4 thru 4.7-7 to determine the KL/R ratio. 1) EQN.4.7-4, Page 26 (Valid for leg members only) 2) EQN.4.7-5, Page 27 3) EQN.4.7-6, Page 27 4) EQN.4.7-7, Page 27
ELB	1	Indicates what type of end conditions are to be used from among Equations. 4.7-8 thru 4.7-10 to determine the KL/R ratio. 1) EQN.4.7-8, Page 27, EQN.4.7-12, Page 28 2) EQN.4.7-9, Page 27, EQN.4.7-13, Page 28 3) EQN.4.7-10, Page 27, EQN.4.7-14,Page28
FVB	30 KSI	Shear strength of bolt.
FYB	36 KSI	Yield strength of bolt.
FYLD	36.0 KSI	Yield Strength of steel
KT	1.0	Effective length coefficient for warping restraint (clause 4.14.4, pg 36)
KY	1.0	Effective length factor (K) for compression buckling about the Y-axis (minor axis)
KZ	1.0	Effective length factor (K) for compression buckling about the Z-axis (major axis)
LEG	0.0	This parameter is meant for plain angles. 0) the angle is connected by both legs and allowable stress in axial tension is 1.0·`FYLD` 1) the angle is connected only by the shorter leg and allowable tensile stress is computed per Cl. 4.10.2 as 0.9·`FYLD` 2) the angle is connected by the longer leg
LT	Member Length	Effective length for warping.
LY	Member Length	Length to calculate slenderness ratio for buckling about the Y-axis (minor axis)
LZ	Member Length	Length to calculate slenderness ratio for buckling about the Z-axis (major axis)
MAIN	2	Parameter that indicates the member type for the purpose of calculating the KL/R ratio (See Cl. 4.4, p. 25) 1) Leg member (KL/r ≤ 150) 2) Compression member (KL/r ≤ 200) 3) Tension member (KL/r ≤ 500) 4) Hanger member per Cl. 4C.4, p. 43 (KL/r ≤ 375) 5) Redundant member (KL/r ≤ 250) 10) Do not perform the slenderness (KL/r) check
NHL	0	Number of bolt holes on the cross section that should be used to determine the net section factor for tension capacity.
NSF	1.0	Net section factor for tension members
RATIO	1.0	Permissible ratio that determines the cut off point for pass/fail status. A value below this quantity indicates PASS while a value greater than this quantity indicates FAILURE.
TRACK	0.0	Level of detail in output 0) Suppresses printing of allowable stresses 1) Prints all allowable stresses 2) Prints expanded output