Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, Comstock · leaf 69
ch is a sec-tional tank-steel shell, the sections being conical,and fitting closely one within the other. Whenthis core with its outside shell has been drivento the required depth, the core is partially col-lapsed, released from the sectional steel shell,and withdrawn. In this manner a… … HI Fig. 19. The Raymond Concrete Pile. form by loose particles, or its destruction by any pressure on thesurrounding soft stratum. After the mold is thus formed it isfilled with a good mixture of concrete, which is carefully tampedduring the process of filling. Sometimes these piles are reinforced…
Building · Carpentry · Masonry
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-371-234.webp)
