钢筋直径（mm） 6 403.9 377.0 282.7 226.2 217.5 188.5 161.6 157.1 141.4 113.1 94.2 8 718.1 670.2 502.7 402.1 386.7 335.1 287.2 279.3 251.3 201.1 167.6 10 1122.0 1047.2 785.4 628.3 604.2 523.6 448.8 436.3 392.7 314.2 261.8 12 1615.7 1508.0 1131.0 904.8 870.0 754.0 646.3 628.3 565.5 452.4 377.0 14 2199.1 2052.5 1539.4 1231.5 1184.1 1026.3 879.6 855.2 769.7 615.8 513.1 16 2872.3 2680.8 2010.6 1608.5 1546.6 1340.4 1148.9 1117.0 1005.3 804.2 670.2 18 3635.3 3392.9 2544.7 2035.8 1957.5 1696.5 1454.1 1413.7 1272.3 1017.9 848.2 20 4488.0 4188.8 3141.6 2513.3 2416.6 2094.4 1795.2 1745.3 1570.8 1256.6 1047.2 222 5430.5 5068.4 3801.3 3041.1 2924.1 2534.2 2172.2 2111.8 1900.7 1520.5 1267.1 25 7012.5 6545.0 4908.7 3927.0 3776.0 3272.5 2805.0 2727.1 2454.4 1963.5 1636.2 28 8796.5 8210.0 6157.5 4926.0 4736.6 4105.0 3518.6 3420.8 3078.8 2463.0 2052.5 32 11489.3 10723.3 8042.5 6434.0 6186.5 5361.7 4595.7 4468.0 4021.2 3217.0 2680.8 不同根数钢筋的计算截面面积（mm） 1 28.3 33.2 50.3 52.8 78.5 113.1 153.9 201.1 254.5 314.2 380.1 490.9 615.8 804.2 1017.9 1256.6 2 56.5 66.4 100.5 105.6 157.1 226.2 307.9 402.1 508.9 628.3 760.3 981.7 1231.5 1608.5 2035.8 2513.3 3 84.8 99.5 150.8 158.4 235.6 339.3 461.8 603.2 763.4 942.5 1140.4 1472.6 1847.3 2412.7 3053.6 3769.9 4 113.1 132.7 201.1 211.2 314.2 452.4 615.8 804.2 1017.9 1256.6 1520.5 1963.5 2463.0 3217.0 4071.5 5026.5 5 141.4 165.9 251.3 264.1 392.7 565.5 769.7 1005.3 1272.3 1570.8 1900.7 2454.4 3078.8 4021.2 5089.4 6283.2 6 169.6 199.1 301.6 316.9 471.2 678.6 923.6 1206.4 1526.8 1885.0 2280.8 2945.2 3694.5 4825.5 6107.3 7539.8 7 197.9 232.3 351.9 369.7 549.8 791.7 1077.6 1407.4 1781.3 2199.1 2660.9 3436.1 4310.3 5629.7 7125.1 8796.5 8 226.2 265.5 402.1 422.5 628.3 904.8 1231.5 1608.5 2035.8 2513.3 3041.1 3927.0 4926.0 6434.0 8143.0 10053.1 9 254.5 298.6 452.4 475.3 706.9 1017.9 1385.4 1809.6 2290.2 2827.4 3421.2 4417.9 5541.8 7238.2 9160.9 11309.7 10 282.7 331.8 502.7 528.1 785.4 1131.0 1539.4 2010.6 2544.7 3141.6 3801.3 4908.7 6157.5 8042.5 10178.8 12566.4 11 311.0 365.0 552.9 580.9 863.9 1244.1 1693.3 2211.7 2799.2 3455.8 4181.5 5399.6 6773.3 8846.7 11196.6 13823.0 12 339.3 398.2 603.2 633.7 942.5 1357.2 1847.3 2412.7 3053.6 3769.9 4561.6 5890.5 7389.0 9651.0 12214.5 15079.6
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