Corrugated Steel Deck uses corrugated steel sheets often filled with concrete to create a composite deck.

• A. Timber Deck
• B. Cast-in-Place Concrete Deck
• C. Precast Concrete Deck
• D. Corrugated Steel Deck

Answer: (D)

A corrugated steel deck creates a composite system by combining a corrugated steel sheet with a concrete topping that bonds to it. The steel sheet acts as the structural base and formwork, while the concrete topping carries compression and, once bonded, works with the steel to resist bending. The corrugations boost shear transfer and mechanical interlock, so the concrete and steel act together as a single, stiffer beam while keeping the system lighter and quicker to install. This setup is distinct from timber decks, which use wood; cast-in-place concrete decks poured directly on supports without a steel deck; or precast concrete decks made from precast slabs. Therefore, the described system is Corrugated Steel Deck.