單項(xiàng)選擇題

如何計(jì)算受彎構(gòu)件的配筋率ρ和最小配筋率ρmin?()

A.ρ=ρmin/γ,ρmin=As/(b*h)
B.ρ=As/(b*h0),ρmin=max{0.2%,0.45*ft/fy}
C.ρ=max{0.2%,0.45*ft/fy};,ρmin=As/(b*h)
D.ρ=0.45*ft/fy,ρmin=0.2%

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