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 443
. 414 SURVEYING. where cl9 h„ and hx are the centre and side heights at one sec-tion and dx and df the distances out, c2) k2, h„ dv and d.2 be-ing the corresponding values for the other end section. C andC are the centre heights, H and H the side heights, and Dand D the distances out on the right… … An The upper figures indicate the distances out and thosebelow the lines the heights, the plus sign being used for cuts.The computation in tabular form is as follows: Sta. d. A. c. h. d. d+d. (d + d)c. DC. DC. I 22 8 8 25 47-5 69.5 556 • • ♦ • .... 2 34 16H 4+ /** 4 = 24= 12 16 50.0 200 88128 88…
Surveying
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