How Do You Calculate Rebar Spacing?

How Do You Calculate Rebar Spacing? Find the rebar-to-spacing multiplier with the formula M = 0.9_sqrt(Pt), with “P” representing the percentage of steel required and “t” representing the thickness of the slab. For example, if the percentage is 0.65 and the thickness of the slab is 6 inches, M = 0.9_sqrt(0.65*6) = 1.78. How do