The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 442
eentwo three-level sections be assumed to be made up of fourplanes formed by joining the centre height at one end with aside height at the other end sectionon each side the centre line (Fig. 114),these lines being called diagonals,an exact computation of the volumeis readily made without… … Fig. 114. The total volume of such a prismoid in cubic * yards is V = 6x^7LW + *>* + ^ + *>* + DC + UC w + =01, +A. + IT+ K + K + H) ->:- (1) * For % demonstration of this formula see Hencks Field-Book. 414 SURVEYING. where cl9 h„ and hx are the centre and side heights at one sec-tion and…
Surveying
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