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 131
ons shown in Figs. 39, 40, and 41, Fig. 39 representingthe section in the solid rock where a lining is not required. Theright hand half of Fig. 40 shows a half section of the tunnelarched ; the left hand half of the same figure shows a half sec-tion with the lining and with a preliminary timber… … Fig- 39- each end to the centre. Shaft No. 1 is 1498 feet from the west-ern end, and has a section of 6 X 6, and a depth of 215 feet.Shaft No. 2 is 2183 feet from the western end, and has a sectionof 13 X 6, and a depth of 277 feet. These shafts were sunk forthe purpose of drainage, before the…
Railroad engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
