5.6.7 Plaster or Gypsum Wallboard Shear Walls
Interior plaster or gypsum wallboard is not being used for shear walls in buildings over one story in height.
The deficiency is in the strength of the walls. Determine if there is a lateral system such as plywood or diagonal sheathing at all but the top floor. Multistory buildings shall not rely on interior plaster or gypsum wallboard walls as the primary lateral-force-resisting system. Conforming buildings which fail this check shall be placed into SPC 4.