Form Deck

A form metal deck, often known as a metal form deck or steel form deck, is a structural component used in construction. It's typically a corrugated steel sheet used as a form for concrete, providing support during the pouring and curing process. 

This deck acts as a base upon which concrete is poured, forming a composite structure that enhances the load-bearing capacity and rigidity of the building. The metal form deck also often serves as the bottom of reinforcement in a composite steel-concrete floor system.