To prepare the model generated by drawing in AEC|BOLT AUTOCAD App [BDS], one should define the wall segments for the “Analytical Wall”s of https://aecbolt.atlassian.net/wiki/spaces/BDS/pages/159580219/Shear+Walls#Analytical-Walls.
“Wall segment” concept in AEC|BOLT Building Design Suite is equivalent to “Pier” and “Spandrel” definitions in ETABS.