計(jì)算下圖箍筋的下料長(zhǎng)度。(箍筋直徑6mm,每個(gè)彎鉤增長(zhǎng)值為50mm,混凝土保護(hù)層厚度25mm)。通過(guò)計(jì)算選擇正確的選項(xiàng)填在括號(hào)內(nèi)。外包尺寸=()下料長(zhǎng)度=()
A.1548mm,1812mm B.1648mm,1712mm C.1748mm,1812mm D.1800mm,1712mm