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Survey of London
… (fig. 222). The bottom part consisted of cast-iron sheet piles, 22ft by 1ft 4in., driven some 8ft into the river bed. … each 6ft by 4ft 6in. These plates were bolted to long iron piles in the river bed and partly secured by land ties to the old wooden wall behind. For ease of handling, the long piles were cast in two parts and bolted together. The lower …
Survey of London
… foundations by the force of air pressure on hollow iron piles, an invention to the perfecting of which he devoted the …