
Rebar Requirements in Concrete Wall Construction | Hunker
As a minimum, #4 rebar (1/2 inch) is spaced vertically at 36 inches on center, continued to within 8 inches of the top of the wall, placed on the tension side -- the inside face -- of the wall. The cover required is 2 inches for foundation walls, or walls exposed to weather, and 1 1/2 inches for walls that aren''t exposed. Horizontal spacing for #4 rebar is a minimum 2 feet, within 12 …