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 318
Fig. 124. … Fig- 125. 294 MANUAL FOR RAILROAD ENGINEERS. Figs. 124 and 125 ; the first being the leading centre, left open atthe middle to allow the passage of the inclined braces reachingback from the heading, and the second the following centre. The centres for large arches require to be removed very…
Railroad engineering
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