What is the minimum clearance for rebar embedded in concrete?

The minimum clearance for rebar embedded in concrete is 2 inches. This is stipulated in order to ensure that there is sufficient cover over the rebar to protect it from environmental factors that can cause corrosion or deterioration. Adequate concrete cover is vital for structural integrity, particularly in areas exposed to moisture or chemicals. The specified clearance not only enhances the durability of the concrete structure but also contributes to its fire resistance.

Having a minimum clearance of 2 inches helps to ensure that the rebar is adequately protected while also allowing for proper bonding with the concrete, which is essential for achieving the desired strength and performance of the structure. Proper spacing and placement of rebar are crucial to the overall effectiveness of concrete as a building material.