Joint Translation
The RAM Steel Column module assumes that all
gravity columns are braced against joint translation (sidesway).
For the AISC 360
(ASD and LRFD), ASD 9th, AS 4100, LRFD 3rd, and IS 800-07 codes this assumption has
an impact on the values of Cm used in the Interaction equation,
and on the ASD 9th ed. value of Cb used for the
calculation of allowable bending stress Fbx used in Eq. H1‑1 (9th
Ed.). In calculating Cm it is also assumed that the column is not
subject to transverse loading between braced levels. For the Eurocode this assumption impacts
the effective length l/L, which is set to 1.0 for all columns.