Methods for Earthwork Computations
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In our eReader you can find the full English version of the book. Read Methods for Earthwork Computations Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Methods for Earthwork Computations
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% Distance out = '-- = 70. 0 ft.
T3 Elevation = 70. 0 X f - 6 = - 40. 0 ft. , the negative sign being used because the point (B f in Fig. 69) is in the fill.
CHAPTER V.
THE CORRECTION FOR CURVATURE.
129. The Cross-Sections. When the road-bed is curved, it is customary to measure the cross-sections in radial planes, instead of at right angles to the chord, then computing the volume as though the solid were straight, and applying a correc- tion for curvature.
Thus, in Fig. 75, where P is the cent...er of the curve, the arcs CjC/, LL' and RR' are the center and the side lines, respectively, of the road- bed, the radius PC l is R, and the length of the chord C/7/ is L. The cross-sec- tions are measured in the radial planes PC l and PC/, A, B and A', B / being the points where the side slopes meet the surface. Hence, if AA / and BB / are the lines cut from the surface by the side slopes, the required volume is bounded horizontally by ABB'A f .
130. The Two Methods of Computing the Correction for Curvature.
What to read after Methods for Earthwork Computations?
You can find similar books in the "Read Also" column, or choose other free books by C W Charles Winthrop Crockett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
% Distance out = '-- = 70. 0 ft.
T3 Elevation = 70. 0 X f - 6 = - 40. 0 ft. , the negative sign being used because the point (B f in Fig. 69) is in the fill.
CHAPTER V.
THE CORRECTION FOR CURVATURE.
129. The Cross-Sections. When the road-bed is curved, it is customary to measure the cross-sections in radial planes, instead of at right angles to the chord, then computing the volume as though the solid were straight, and applying a correc- tion for curvature.
Thus, in Fig. 75, where P is the cent...er of the curve, the arcs CjC/, LL' and RR' are the center and the side lines, respectively, of the road- bed, the radius PC l is R, and the length of the chord C/7/ is L. The cross-sec- tions are measured in the radial planes PC l and PC/, A, B and A', B / being the points where the side slopes meet the surface. Hence, if AA / and BB / are the lines cut from the surface by the side slopes, the required volume is bounded horizontally by ABB'A f .
130. The Two Methods of Computing the Correction for Curvature.
What to read after Methods for Earthwork Computations?
You can find similar books in the "Read Also" column, or choose other free books by C W Charles Winthrop Crockett to read onlineMoreLess
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