The method for distributing loads via the torsional effects of rigid diaphragms, described in Rigid Diaphragm Analysis, requires the relative rigidity of the shear lines to determine how much force goes into each shear line.
These settings control how the program determines the relative rigidity of the shear walls to distribute loads via the torsional effects of rigid diaphragms, described in Rigid Diaphragm Analysis, and whether this choice is also used in the transfer of total shear line force to each wall segment within the shear line for both rigid and flexible analysis.
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