International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 748
hod of making a direct measurementof a bridge span ? (907) Let A B (see Fig. 19) be the center line of the pro-posed bridge, and B C the base line, the length ofwhich is 421.532 ft. The angle A is 40° 55; the angle Cis 43° 22; required, thelength oi A B. ^ Ans. 390.31 ft. (908) What are someof the… … Fig. 19. (911) A side of a cofferdam is 40 feet in length and 11feet in height; the water is 10 feet in depth; {a) what isthe total water pressure against the side of the dam ? {l)) 1330 RAILROAD CONvSTRUCTION. What is the moment of the water pressure about the innertee of the dam ? j, j {a)…
Railroad engineering
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