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Section 2
2-79
Table 2.6 - AISI Cold Formed Steel Design Parameters
Parameter
Name
Default
Value
Description
DMAX 1000.0 Maximum depth permissible for the section during
member selection. This value must be provided in
the current units.
DMIN 0.0 Minimum depth required for the section during
member selection. This value must be provided in
the current units.
FLX 1
Specifies whether torsional-flexural buckling
restraint is provided or is not necessary for the
member. See AISI C4.1
Values:
0 – Section subject to torsional flexural buckling and
restraint not provided
1 – restraint provided or unnecessary
FU 58 ksi Ultimate tensile strength of steel in current units.
FYLD
36 ksi Yield strength of steel in current units.
KT
1.0 Effective length factor for torsional buckling. It is a
fraction and is unit-less. Values can range from 0.01
(for a column 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.
KY
1.0 Effective length factor for overall column buckling
about the local Y-axis. It is a fraction and is unit-
less. 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.