Hoyt, Charles Hamilton, Burr, William H. (William Hubert), 1851-1934, joint author, United States. Bureau of Public Roads · Washington : U.S. Dept. of Agriculture, Office of Public Roads : G.P.O. · leaf 14
aterial in the foundationthan by any other method. Where conditions do not permit test pits, an iron rod may bedriven to depths of from 10 to 20 feet, unless rock is encounteredbefore that depth is reached. This method, however, gives verylittle idea of the material through which the rod is driven.… … FOUNDATIOITS. driven. A driving cap should be provided and the driving shouldbe done with wooden mauls. Pipe has been driven in this mannerin the winter months to depthjs of about 30 feet or possibly more.The pipe, after being driven, may be pulled out with a small chainand lever, so that a sample…
Bridges · Culverts
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