A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 268
one end ac-cessible. Determine them as in Art. 378, by choosing a point D, from which C and A are visible, and a point E, from which C and B are visible. At C ob-serve the angles D C A, A C B, and B C E. Measure the distances C D and C E. Observe the angles ADC and B E C. Then in the triangle ADC,… … 254 LAXD-SUR VEYISG. 384. Problem. To measure an inacessible distance, A B, when no pointcan be found from which the two ends can be seen. Let C be a point fromwhich A is visible, and D a point from which B is visible, and also C. Measure C D. Find the distances C A Fig. 273. and D B, as in the…
Surveying
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