International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 88
opographer standing at D reads a rodof 16 feet held at A. Subtracting the constant 5.3, theremainder 1().7 is the difference between the elevations of Aand D and is an ascending slope. The horizontal distance 1 o *from A to D is 30 feet and the slope is recorded H—wft- SURVEYING. 677 1295. Slope… … Fig. 297. angle of slope and the horizontal distance for one foot of rise,as follows: 1° is 57.3 feet horizontal per 1 foot rise. 2° is 28.6 feet horizontal per 1 foot rise. 3° is 19.1 feet horizontal per 1 foot rise, etc. 1296. Platting Topography in the Field.—Whilesome engineers favor the…
Railroad engineering
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