False wall skin section and fire lobby and roof and staircase details of residential building that includes a detailed view of layer- wall core polystyrene base material thickness of, layer-3 of wall of "to the base of concrete of thickness, concrete chain, rebar steel rod ", stirrup for chain frame ", Hollow for fastening and assembly. pvc base material, round "so" for post-tensioning, steel plate, see detail pl, reinforcement rod square cms, staircase sectional details, lif and libby details and much more of structure details.