👉 Underbeat is a term used in structural engineering and construction to describe the inner layer of concrete that provides support to the outer layers. It acts as a barrier between the foundation and the concrete, preventing it from settling or cracking during the construction process. The thickness of an underbeat can vary depending on the type of foundation being built, but typically ranges from 1/2 inch to 3 inches. Underbeats are important for maintaining structural integrity in buildings and other structures, as they help prevent