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American Steel Design
Section 2
2-80
Table 2.6 - AISI Cold Formed Steel Design Parameters
Parameter
Name
Default
Value
Description
KZ
1.0 Effective length factor for overall column buckling
in the local Z-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.
LT
Member
length
Unbraced length for twisting. It is input in the
current units of length. 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.
LY
Member
length
Effective length for overall column buckling in the
local Y-axis. It is input in the current units of length.
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.
LZ
Member
length
Effective length for overall column buckling in the
local Z-axis. It is input in the current units of length.
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 allowable stress in axial
compression.
NSF
1.0 Net section factor for tension members, See AISI C2.