A system of geometry and trigonometry : with a treatise on surveying ... in which, also, the principles of rectangular surveying ... are fully explained: with a complete series of mathematical tables, and the necessary explanations (1830)
Flint, Abel, 1765-1825, Gillet, George, Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Hartford : Cooke & co. · leaf 47
rectly over the point w^here the chain begins or ends, ac*cording as you are ascending or descending a hill; whichpoint may be ascertained by a plummet and line. CASE U. To SrPvVEY A FIELD IX THE F0B3r OF A TEAPEZirX. Measure the several sides, and a diasfonal betv\-een two op.posiie angles ;… … SURVEYING. 45 To PROTRACT THIS TRAPEZtUM. Draw the side AB the given length ; with the diagonal AC28 and the side BC 11.70 describe cross arcs as at C, fromA and B as centres ; and the point of intersection will repre-sent that corner of the field : then, with the side CD 21.50 andthe side AD…
Surveying
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