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FOUNDATIONS FOR THE CENTRAL PIER of Kincardine Bridge were made by sinking to rock level, under air pressure, six cylinders with a diameter of 14 ft. 6 in. The cylinders were lowered by hydraulic jacks. Concrete was placed between the cylinder walls and the circular shuttering round the air shaft. As the concreting proceeded the jacks were adjusted and the cylinders sank slowly to their foundations.
Photo, Sir Alexander Gibb and Partners
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