"Footing Rebar (Simple)Formula for figuring footing rebar withhorizontal bar only. May have multiple barsof a single size. This can be used withmultiple rebar items, just change the weightvariable from the table above.Variables: Footing Length, Num BarsFormula for footing with #4 bar. MultipleFooting Length-.5 is used to subtract 3"" oneach end for clearance to footing wall.Footing Length = 10'
. (-.5) = 9.5'Num Bars = 2Total = 19'19' * .00034 = .00646 ton"