The contractor emailed us to confirm that the steel girders will arrive Monday morning.

承包商寄電子郵件跟我們確認，鋼樑將於週一上午送達。

During the site meeting, engineers explained why one girder needed extra reinforcement.

在工地會議上，工程師說明了為何其中一根大梁需要額外補強。

Shipping costs rose sharply because each concrete girder required a special flatbed truck.

由於每根混凝土主梁都需要特殊平板卡車載運，運費大幅上漲。