The block is still just a skeleton of girders.这片建筑还只是仅有主梁的骨架.All girders shipped by rail were arranged on a flatbed rail car.由火车装运的所有主梁都安放在平板火车车皮上.The girders are carried on trestles.这些大梁是由支架撑着....
During fabrication slots for the stringers flanges were flame cut into box girders.制造时,为安装纵梁翼缘,在箱型梁中用焰割法开槽口.The web and flanges of the main girders were fabricated from ASTM A 441 steel.主梁的腹板和翼缘用ASTMA441钢制造.The block is ...