Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 345
use of tables, but other end, and P = the constant subtrac- the engineer not unfrequently finds him- self unprovided with these, and is then tive solid already mentioned. The total end areas above and below obliged to go through with a great deal of grade are easily obtained from these data.… … 100 /CD , C^D'j^ $ (C + C'MD + D + 4 S= If the side slopes were continued under 162 \ -A the road-bed, they would meet at a certain point, which, with a given width of for- Reducing, and subtracting P, we ob- mation and ratio of slope, would be at a tain the working formula — constant distance…
Engineering
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