What type of steel deck is made by attaching a bottom steel sheet to a panel?

The type of steel deck that is made by attaching a bottom steel sheet to a panel is known as a cellular deck. Cellular decks are designed with an inner layer that forms multiple enclosed spaces or cells, which can be beneficial for various applications. The cells can be used for the routing of electrical and mechanical services, thereby providing additional utility advantages in building construction. The bottom sheet not only helps create these cells but also contributes to the structural integrity and load-bearing capacity of the deck.

In contrast, composite decks typically involve a combination of materials and are designed to act together structurally with concrete. Roof decks, while they can be related to various applications, do not necessarily involve the formation of enclosed spaces like a cellular deck does. Form decks are primarily used as a surface for pouring concrete but do not have the same design features as cellular decks. Understanding these distinctions clarifies why cellular decks stand out for their unique construction and functional attributes.