Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 370
e CD, making an angle of 60° with the line CD ;from the point D draw a line perpendicular to CD, until it inter-sects CB at B; produce it upward to A, until distance from Dto ^ = difference of elevation between C and A. Measure theline ^^ on the scale, which gives the required depth. Measurealso CB… … 364 ELEME]STS OF SURVETIJs^G. [book X. of shaft = 500 feet, and the angle GFD = 60°, to find the length of a cross-cut UG from* the bottom of the shaft to intersect the vein; also the distance from the outcrop to the point of intersection. Find the horizontaldistance from the outcropF, at which a…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
