A treatise on land-surveying; comprising the theory developed from five elementary principles; and the practice with the chain alone, the compass, the transit, the theodolite, the plane table, &c. Illustrated by four hundred engravings, and a magnetic chart (1875)
Gillespie, W. M. (William Mitchell), 1816-1868 · New York, D. Appleton · leaf 349
ne LM, drawn from L through P, willbe the division line required.* If HK be set off in the contrarydirection, it will fix another line LTM, meeting CB produced, andthus parting off another triangle of the required content. Example. Let it be required to part off 31.175 acres by afjnce passing… … CHAP. 11.] Parting ofT Land. 343 side BC, measured parallel to AC, being 6 chains, and DC 18chains. The angle at C is fixed by a tie-line AB = 48.00^BC being 42.00, and CxV being 30.00. Ans. CL = 27.31chains, or CL = 7.69 chains. The figure is on a scale of 20 chains to 1 inch = 1 : 15840. (520) If…
Surveying
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