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 327
es being driven, the tops are sawed off level,and a heavy open work floor of square timber placed upon them,as in Fig. 129. Any soft material about the heads of the piles isthen removed, and concrete filled in to the level of the top of theplatform, upon which the masonry may be commenced,… … When a mass of clay is underlaid by a soft material it is oftenbest to rely upon a strong platform and a bed of concrete, and notto cut up the firm upper stratum by piling. Where the upperbed is of a loose and yielding substance with a hard bed beneath,into which the piles are driven, especial care…
Railroad engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
