Steel roof deck is typically installed to endlap a minimum of how many inches over the supports?

The installation of steel roof decks requires careful attention to the endlap to ensure structural integrity and proper load distribution. Endlapping by a minimum of 2 inches over the supports is standard practice. This measurement is critical because it allows for sufficient overlap that enhances the connection between adjacent steel deck pieces.

Adequate endlap helps to prevent potential failures under load, as it minimizes the risk of movement or separation at the joint between the panels. The 2-inch requirement is designed to ensure that there is enough material overlap to transfer loads effectively, mitigate stress concentrations, and provide a continuous surface for the roofing system applied over the deck.

This practice is guided by industry standards and engineering best practices to support overall stability and longevity of the roof system. It's essential for contractors to adhere to these specifications to ensure safety and performance in commercial roofing applications.