Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 86
n the foundation material was half sand and water, and we dumped gravel all around the pipe and probably a great deal of this gravel was forced underneath the pipe. Sometimes, however, when the bottom was very bad, a miniature trench with sheeting was constructed in the bottom of the tunnel, and by… … Fig. ii. the tunnel, in the same sort of ground, on account of working from a face, and not tramping back and forth on the quicksand and thus making it soft. It may seem as if we went through a great many operations, but, on account of the smallness of the gang employed, the work was not…
Engineering
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