A.采用扁鋼的截面不應小于150mm2,厚度不小于5mm B.采用扁鋼的截面不應小于100mm2,厚度不小于4mm C.圓鋼直徑不小于10mm D.圓鋼直徑不小于6mm
A.扁鋼截面不應小于100 mm2 B.扁鋼截面不應小于120 mm2 C.厚度為6mm D.厚度為4mm
A.當采用圓鋼時,直徑不應小于10mm B.當采用圓鋼時,直徑不應小于6mm C.當采用扁鋼時,厚度不應小于4mm D.當采用扁鋼時,厚度不應小于3.5mm