WHAT IS COMPOSITE METAL DECK

Composite metal deck is a sheet of thin profiled steel used in the formation of reinforced concrete floors in steel frame construction.Composite metal deck is using the steel beams to be connected with the concrete floor slabs. It utilizes the advantage of both steel and concrete. Therefore, it is more cost-effective form of construction.

Composite metal deck has embossments designed to interlock with concrete slabs. The combination of floor deck and concrete serves the dual purpose of permanent form and positive reinforcement.

The metal deck is laid and fixed between the horizontal beams of a steel frame building. A concrete floor slab, reinforced with steel mesh sheets or steel fibres, is cast on the composite metal decking to create a composite concrete floor slab

The composite action is extended to the supporting steel framework through the application of shear studs which are stud welded through the steel decking on to the top flange of the steel beam before the concrete is cast.

The composite floor slab is reinforced with steel mesh sheets, or rebar, which control cracking, resist longitudinal shear and improve the composite concrete floor slab’s tensile strength in the event of fire.

Composite metal deck, and the subsequent composite concrete floor slab, is used as formwork in construction, particularly on multi-storey or high-rise buildings such as residential apartments, office blocks and multi-storey car parks.

The core advantages of specifying composite metal deck for construction is the resulting strength, load bearing ability and fire performance of the finished concrete floor slab, which is greater than that of either steel or concrete in isolation.