What is percent of clear cover in slabs and beams?

The clear cover in slabs and beams refers to the minimum distance between the surface of the concrete and the surface of the embedded reinforcement bars (rebar). This cover is crucial for protecting the rebar from corrosion and ensuring adequate bond strength. Typically, the clear cover is specified in building codes and can vary, but it generally ranges from 15 to 40 mm depending on exposure conditions and structural requirements. The percentage of clear cover is not commonly expressed as a percentage; rather, it is a fixed dimension based on design standards.