A.100 B.112 C.150 D.175
A.240 B.265 C.285 D.315
A.187.5 B.196.3 C.208.3 D.211.2
A.1.997 B.2.290 C.2.351 D.2.616
A.对于采用原木下弦的木桁架,其跨度不宜大于15m B.采用木檩条时,桁架间距不宜大于4m C.桁架制作应按其跨度的1/200起拱 D.桁架受压弦杆的长细比限值为1/150
A.272.0 B.200.0 C.190.5 D.139.7