Sinking Piles with Water Jets.

Issue 3 and Volume 1893 13.

Sinking Piles with Water Jets. Genie Civil thus describes the sinking of iron piles in Chili with a water jet. Some of the piles were 14.76 inches in diameter, with a flat bottom flange or pedestal 41.92 inches in diameter, and were sunk to a depth of twenty-eight feet below the bottom of the river through very coarse, compact sand, in which screw piles penetrated with great difficulty, and sharp piles could only be driven from 11.8 to 14.1 feet. A pump delivering about 12,000 gallons per hour through a 4.92 inch pipe would sink two piles, each having a 2.05 inch pipe projecting about 7.87 inches below its base with a 5.9 inch opening. The pile being put in position and the water jet started, it sank nearly three feet by its own weight, alter which it was worked down by means of an endless cable leading from the…

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