单项选择题
A.纵筋直径B.1.5倍纵筋直径C.50mmD.75mm
柱中纵向钢筋的净间距不应小于50mm,且不宜大于300mm。
A.3n B.3.2n C.3.4n D.3.6.6n
A.0.15 B.0.17 C.0.18 D.0.20
A.149.3 B.160.8 C.175.8 D.190.4
A.1008 B.1120 C.1150 D.1250
A.158.6 B.166.0 C.174.0 D.195.6
A.3n B.3.2n C.3.4n D.3.6n
A.300 B.350 C.400 D.450
A.557.9 B.490.4 C.633.0 D.665.2
A.144.0 B.148.5 C.166.3 D.202.5
A.2300 B.2700 C.3200 D.3900