Engineering News-record, Հատոր 83

aggregate American Association average bascule bridge beam bill bolts brick bridge building built Bureau cable caissons carried cars cement charge Chicago Civil Engineers cofferdam columns Commission committee concrete Concrete Ship construction contractor cost crete curve Department district dragline excavators electric elevation engi Engineering News-Record estimate excavation floor freight gineering girders grade gravel hauling highway hog box I-beams Imhoff tank increase July July 15 June 26 labor load located material ment method miles motor truck neer operation pavement piers piles pipe placed plant pump rail railroad railway reinforced-concrete River rivets road sand shear ship shown side slab Society span specifications square station steel stress structure subgrade subway surface tank tests tion tower track traffic trusses tunnel United wall yard York City