CONNECTION BEHAVIOR IN COMPOSITE PROFILED STEEL SHEET DRY BOARD (PSSDB) SYSTEM

This paper studied the behavior of the connections in  the composite Profiled Steel Sheet Dry Board (PSSDB) system. The PSSDB is a light weight composite panel comprised of a profiled steel sheet  PSS and  cement board as dry board connected together by either mechanical fasteners or by epoxy adhesive resin. Ten push-out specimens with different size, shape, thickness of dry board, and types of connections were carried out. The ultimate load, the load slip relationship, and modes of failure were observed. The results showed that the samples connected by epoxy adhesive resin can sustain load greater than that connected by mechanical fasteners up to 76%, and the ultimate load affected by the thickness of dry board. The capacity of connecter (self drilling-self tapping screw with 4.2 mm diameter) is about 1.736 kN/screw. This value increased by about 20% with the increase in dryboard thickness to double (from 8 mm to 16 mm). The Ultimate load sustained by the specimens connected by using epoxy adhesive resin is about 37 kN/m and 137 kN/m for the  DB connected to ribs and trough sides of PSS, respectively. These values increased by about 14% with the increase in dryboard thickness to double.