
Using Supports With Rebar When Pouring Concrete
26/8/2019· Rebar—the common term for the metal bar used to reinforce poured concrete—must be eedded to the proper depth (known as cover) in order to provide the proper strength. Rebar chairs, or similar devices, are used to prop up the rebar, separating it from the concrete form or subbase, so that the rebar is eedded in the concrete to the specified cover depth.