A steel deck sheets longitudinal side edge overlaps with another neighboring sheet.

How A Lapped Seam Works:

Steel deck panels have a male and female side edges that can be overlapped and secured with fasteners.

Why A Lapped Seam Matters:

Steel deck panels that are fastened together add to the strength of the overall structure and prevent concrete or water from leaking through the metal deck. Learn more on How To Attach Metal Deck.