A.5d B.10d C.15d D.20d
A.25% B.35% C.45% D.50%
A.主梁筋→次梁筋→板鋼筋 B.主梁筋→板鋼筋→次梁筋 C.板鋼筋→次梁筋→主梁筋 D.板鋼筋→主梁筋→次梁筋