Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 102
sectional areas of and s which occur in practice, we obtain a side-hill sections, and for a correction to diagram from which the area of any cross- be applied to end-area solidities, to give the section of any variety of road-bed and true solidity by the prismoidal formula. slope can be obtained,… … c = the centre cut. We will suppose a diagram is required c' and c" = side cutp. for a road-bed of 14 feet and slopes of \\ d' and d" = D = width on surface. to 1, on a sheet of 16 X 20 engraved ic = width of road-bed. cross-section paper graduated to tenths s = ratio of slope, 3-2, 5-4, etc. A =…
Engineering
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