A complete treatise on practical land-surveying, in seven parts; (1839)
Nesbit, A[nthony], 1778-1859. [from old catalog] · London, Longman, Orme, Browne, Green, and Longmans; [etc., etc.] · leaf 78
D.326310 Triangle BCD.Whole area ,5a. Or. 39p. ANOTHER METHOD. A field of four sides may sometimes be surveyed by dividingit into two right-angled triangles, and a trapezoid. TO COMPUTE THE CONTENT. Rule.—Multiply the sum of the two perpendiculars by theirdistance upon the base-line, and the… … Measure the base A D, and enter in your field-book wherethe two perpendiculars rise, &c. as in the following notes. Triangle ABE. 422 per. 265 base. j 1 ADr: 1326 G C = 645 AG= 952 IE B = 422 AE= 265 i Per. Base. 21102532844 111830 Triangle GCD.645 per.374 base. 258045151935_ 241230 Trapezoid E…
Surveying
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