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1374 第一座大型深水气压沉箱在圣路易的爱兹桥完工,并开始在纽约布鲁克林桥修建同类型基础。 1374 《孤立墩柱法》出版于芝加哥,第一次叙述了科学的基础原理,指出了基脚的重心应该与墩柱的重心相重合。 1375 伏尔冈(Vulcan)将蒸汽打桩锤引入美国。
1374 The first large deep-sea pressure caisson was completed on Aizi Bridge in St. Louis and began building the same type of foundation at Brooklyn Bridge in New York. 1374 The Isolated Pier Method, published in Chicago for the first time, describes the rationale for science and points out that the center of gravity of the foot should coincide with the center of gravity of the pier. 1375 Vulcan introduced steam pile hammers to the United States.