2014-6-19 · For example, according to SP (Russian norms for Nonprestressed Concrete Structures) minimum reinforcement area should be determined Asmin = mus * b * h0, where Asmin - is the minimum area of reinforcing steel within the tensile zone, mus - is the minimum reinforcement ratio, for bending mus =0.001, for bending with axial force mus =0.0025, b ...