Manual for railroad engineers and engineering students : containing the rules and tables needed for the location, construction, and equipment of railroads as built in the United States (1883)
Vose, George L. (George Leonard), 1831-1910 · Boston : Lee and Shepard · leaf 331
end into the tube and excavate the material, passing it upthrough the tube itself, which descends under a proper controluntil a suitable foundation is reached, when the column is filledwith concrete or masonry. The following description of thecolumns sunk for the Harlem Bridge, at New York, by… … Fig- 133-provided with flanges on the inside, by which they are bolted to-gether until the required length is obtained, the lower edge of the FOUNDATIONS. 307 lower one being chamfered to about \ inch thick. Another cyl-inder, B, usually of boiler iron, called the air-lock, is placed on topo\ the…
Railroad engineering
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