Prodromus of a practical treatise on the mathematical arts: containing directions for surveying and engineering (1838)
Eaton, Amos, 1776-1842 · Troy, N.Y., E. Gates; New York, Robinson, Pratt & co., [etc., etc.] · leaf 195
182 Plot of a survey, wherein the area is cast up by reducing thewholesurvey of a single triangle. This is referred to and explainedfrom sections 96 to 99. … Contraction of the vein, from sec. 315. One third of the area is generally deducted for the contractionof the vein. This expressed decimally is 0.666—this agrees nearlywith Bossuts experiments. Eytelwein adopts 0.640. It has beendemonstrated by experiment, that a conical tube, whose length isabout…
Surveying · Civil engineering
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