【简答题】
查找跨度表得出合适的椽条尺寸:假设条件:屋面活荷载 1kPa,椽条不支撑吊顶,挠度限值:跨度/150 (1)轻型屋面,跨度4.5m,间距300mm,IIc/IIIc 级SPF:( )(2)轻型屋面,跨度4.5m,间距400mm,Ic 级花旗松:( )(3)重型屋面,跨度2.44m,间距300mm,IVc/Vc 级其他北美树种:( )(4)重型屋面,跨度4.23m,间距400mm,Ic 级SPF:( )(5)轻型屋面,跨度5.2m,间距600mm,IIc/IIIc 级SPF:( )
参考答案:
参考解析:
举一反三