Tables for the Computation of Railway And Other Earthwork
Tables for the Computation of Railway And Other Earthwork
C L Charles Lee Crandall
The book Tables for the Computation of Railway And Other Earthwork was written by author C L Charles Lee Crandall Here you can read free online of Tables for the Computation of Railway And Other Earthwork book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Tables for the Computation of Railway And Other Earthwork a good or bad book?
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correction = (^ — ^ ) ( zt/ — 7v) — ^^ ( 18) 3 X 54 where, as in Pig. 4 and eq. (7), ^ and c^ are the center heights and w and w' are the total widths. This correction is to be added to the approximate volume found by end areas ; it disappears when the center heights, or the widths, are equal, and it can often be neglected without computation when inspection shows one of the factors very small. 20. Five-level Ground. — The intermediate heights having been taken over (or under) the edges of the ...roadbed. In \ 8, see Pig. 5, each section was divided into three triangles, one having the distance to the left slope stake, yj, for base, and the height over the left edge of the roadbed, Z^, for altitude, the second the corresponding dimen- sions, /r, /r> ^^ ^^ nght, and the third the width of roadbed and the center height. Applying (2), and remembering that since the width of roadbed is the same at both ends, the correction for the third triangle will be zero : Pris.correction = r(/,-AO(//-/i)+(^-^/)(//-/r)l^?- (19) L .
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