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1810.7.7 Dimensions of Caisson Piles
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Caisson piles shall consist of concrete pipe piles that are socketed into rock and constructed with steel reinforcement, and in which the socket is observed before the concrete is poured. Steel reinforcement shall be covered with at least 11/2 inches (38 mm) of concrete. The minimum diameter of caisson piles shall be 7 inches (178 mm). A suitable steel driving shoe shall be welded to the bottom of each caisson pile. The center-to-center spacing of caisson sockets shall be at least two and one-half times the outside diameter of the shell but not less than 4 feet (1219 mm).
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