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1、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（kg/m）12345678934566.57.112.619.628.333.214.125.139576621.237.75985100 28.350.37911313335.362.89814116642.475.4118170199 49.588.0137198232 56.5100.5157226265 63.6113.1177254299 0.05550.09860.1540.2220.26088.210121450.352.878.5113.1153.9 101106157226308
2、 151158236339462 201211314452616 251264393565770 302317471679924 3523705507921078 4024226289051232 45247570710181385 0.3950.4150.6170.8881.208 1618202225201.1254.5314.2380.1490.9402509628760982 60376394211401473 8041018125715211963 10051272157119012454 12061527188522812945 14071781219926613436 16082
3、036251330413927 18102290282734214418 1.5781.9982.4662.9843.853 28323640615.8804.21017.91256.6 1232160820362513 1847241330543770 2463321740725027 3079402150896283 3695482561077540 4310563071258796 49266434814310053 55427238916111310 4.8346.3137.9909.865 净保护层厚度（mm）： 25 30 35 40梁纵向钢筋单排最大根数 (净保护层厚度：25mm
4、）梁宽 b（mm）钢筋直径（mm）141618202225283236401502/32/322221/211120043/43/43332/3221/2250554/54/543/432/3223006/765/65/654/543/432/33507/876/76/765/64/543/434008/98/97/87/86/76/75/64/54/53/44509/109/108/98/97/97/86/75/64/54/550010/1210/1110/119/108/107/96/86/75/64/555012/1311/1211/1210/119/118/107/96/85/75/6
5、60013/1412/1412/1311/1210/129/118/107/86/75/7梁宽 b14161820222528323640注：表内分数值，其分子为梁上部纵筋单排最大根数，分母为梁下部钢筋单排最大根数。梁纵向钢筋单排最大根数 (净保护层厚度：30mm）梁宽 b（mm）钢筋直径（mm）141618202225283236401502222221/21112003/433332/32/3221/225054/54/5443/432/32230065/65/654/54/543/432/33507/86/76/76/75/65/64/543/434008/987/87/86/76/75
6、/64/54/53/44509/109/108/98/97/86/86/75/64/54/550010/1110/119/109/108/97/96/86/75/64/555011/1211/1210/1110/119/108/107/96/85/75/660012/1412/1311/1311/1210/129/118/107/86/75/7梁宽 b14161820222528323640梁纵向钢筋单排最大根数 (净保护层厚度 35mm）梁宽 b（mm）钢筋直径（mm）14161820222528323640150222221/2111120033332/32/32221/22504/54/
7、5443/43/432/3223005/65/6554/54/53/43/432/33507/76/76/765/65/64/543/434008/97/87/876/75/75/64/54/53/44509/108/98/98/97/86/86/75/64/54/550010/1110/119/109/108/97/96/85/75/64/555011/1211/1210/1110/119/108/107/96/85/75/660012/1412/1311/1211/1210/119/118/97/86/75/7梁宽 b14161820222528323640梁纵向钢筋单排最大根数 (净保护
8、层厚度 40mm）梁宽 b（mm）钢筋直径（mm）1416182022252832364015022221/21111120033332/32221/21/22504/54443/4332/3223005/65554/543/4332/33506/76/7665/64/54/53/43/434007/87/87/876/75/65/64/543/44508/108/98/987/86/75/75/64/54/550010/119/109/1098/97/86/85/75/64/555011/1210/1210/1110/119/108/97/86/75/75/660012/1311/1311/
9、1211/1210/118/108/97/86/75/7梁宽 b14161820222528323640净保护层厚度（mm）： 30 35 40 50柱纵向钢筋单排最大根数 (净保护层厚度：30mm）柱宽 b（mm）钢筋直径（mm）1416182022252832364025033333332223004444433333350555444443340065555554444506666655544500777766655555088777766656009888877766650109998887767001010109998877750111110101099888800121111111010109988501312121211111010999001313131212111110109柱宽 b14161820222528323640柱纵向钢筋单排最大根数 (净保护层厚度：35mm）柱宽 b（mm）钢筋直径（mm）141618202225283236402503333332222300444433333335055444444334005555554444450666
