...
(Rigid area is the area where the intersection of the Slab and the Column or Shearwall is.)
2. Calculation of Shearwall Height
While Column is exported to Safe, it is sent without subtracting the slab thickness from Story Height. In sort if ‘Story Height’ is 10 feet, Column height is also 10 feet.
But while Shearwall is exported to Safe, Slab thickness is subtracted from Story Height. In sort if ‘Story Height’ is 10 feet and Slab thickness is 0.83 feet (10 inch), Shearwall height is also 9.17 feet.
In exports, both 'Column' and 'Shearwall' height will now be sent Story Height subtracted from 'Slab Thickness'.