A.設(shè)計(jì)圖示尺寸以支護(hù)面積計(jì)算 B.設(shè)計(jì)土釘數(shù)量以根數(shù)計(jì)算 C.設(shè)計(jì)土釘數(shù)量以質(zhì)量計(jì)算 D.設(shè)計(jì)支護(hù)面積×土釘長度以體積計(jì)算
A.0.3%~0.5% B.0.5%~1.0% C.1.5%~3% D.3%~4%
A.200mm B.300mm C.400mm D.500mm