Densification of Loose Deposits by Pounding

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Abstract
Marginal sites consisting of rubble fill or loose natural soils have been improved by the pounding process so that one to four story structures can be supported on spread footings. The pounding process consists of dropping a weight of 3.5 tons to 6.0 tons (3.2 metric tons to 5.4 metric tons) through distances of 30 ft to 40 ft (9.2 m to 12.2 m) to impact into the soil. The depth of improvement was measured to depths of 15 ft to 20 ft (4.6 m to 6.1 m). Settlement of the structures was minimal. The costs for pounding are significantly less than alternative designs.

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