n.托梁
The floor joist was cracked and fractured, but no debris was deposited in the basement. 地板托梁破裂折斷，但是在地下室并未落下碎片。
The purpose of transferring loads to the joist and wiping out the columns can be achieved safely. 通過預(yù)應(yīng)力吊桿將樓面荷載轉(zhuǎn)移到托梁上，安全地實(shí)現(xiàn)托梁拔柱的目的。
