钢筋的计算截面面积及公称质量表直径d(mm)不同根数直径的计算截面面积(mm2)单根钢筋公称质量(kgm)12345678934566.57.112.619.628.333.214.125.139576621.237.75985100 28.350.37911313335.362.89814116642.475.4118170199 49.588.0137198232 56.5100.515