The overlapping of neighboring longitudinal edges steel deck. The steel deck panels must have the same profile to be able to overlap. Some shapes of steel deck profiles are not able to overlap.
How A Side-Lap Joint Works:
When two pieces of metal deck with the same profile are adjacent, a side-lap Joint can be used to fasten the two sheets together by overlapping a portion of each sheet by using a side-lap fastener.
Why A Side-Lap Joint Matters:
Steel deck sheets 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 The Anatomy of Metal Deck.