recent earth 40 feet deep at the toe and by the frictional resist- creted up to meet the lower edge of the caisson, the buckling of the trusses has proved. In the new bridge ance between the great mass and the earth upon which whole of the working chamber being ultimately filled it rests. The… … 10.—LOKGITUDHrAL SECTION THBOUGH BBOOKLTN ANCHOBAGE OF TEE caisson to be sunk passed through 50 distribute the pull of the chains, they EAST BIVEB BBIOGE. feet of water, 30 feet of saud, gravel, are divided into two sets, one above > 1899 SCIENTIFIC AMERICAN, INC.
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