STAAD Commands and Input Instructions
Section 5
5-246
Load command will be used in defining the weight moment of inertias at joints. For
slave joint directions, the associated joint weight or weight moment of inertia will be
moved to the master. In addition, the translational weights at slave joint directions will
be multiplied by the square of the distance to the master to get the additional weight
moment of inertia at the master. Cross product weight moment of inertias at the master
will be ignored.