Metal Grid Decks

A metal grid deck consists of primary (main) members that span between adjacent beams, stringers, or cross beams and secondary members (often referred to as distribution bars or cross bars) that interconnect and span between the primary members. The primary and secondary members of the grid deck typically form a rectangular pattern, although diagonal patterns can also be used. The primary and secondary members must be securely joined together. Metal grid decks are typically comprised of steel members forming the grid, and can be open, filled and partially filled with reinforced concrete, or unfilled and composite with a reinforced concrete slab. These types of metal grid decks are further explained within this section.