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 359
sions forsuch structures may be as follows : — 334 MANUAL FOR RAILROAD ENGINEERS. Area. Opening. Side Wall. Depth of Covers. Length ofCovers. 4 2X2 2X2 12 5 9 3 X 3 3 X 2\ 16 6 16 4X4 4 X 3 20 7 25 5 X 5 5 X 3l 22 8 36 6X6 6x4 24 9 Under high embankments the depth of cover may be increasedat the… … Fig. 141. MASONRY. 335 tures, the arch, Fig. 141, may be used ; A being an end elevation,and B a longitudinal section, through coping, arch, and floor.Fig. 142 shows a transverse seetion of the same through arch.
Railroad engineering
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