Canadian engineer . , 42^ square yards, at 94 cents ; total Extra, reconstructing driveway, macadam, 16 1/9 square yards, at 50 cents ; total Extra, reconstructing driveway, macadam, 33^ square yards, at 50 cents; total Total cost $31,733-84 Maximum grade before per cent. Maximum grade after . per cent. As was pointed out in the opening paragraph, gravelconstituted an important material of construction. As anexample of a gravel road the Monmouth Boulevard will serveto illustrate. This road is miles long, and was builtunder the following specifications:— Road grav
Canadian engineer . , 42^ square yards, at 94 cents ; total Extra, reconstructing driveway, macadam, 16 1/9 square yards, at 50 cents ; total Extra, reconstructing driveway, macadam, 33^ square yards, at 50 cents; total Total cost $31,733-84 Maximum grade before per cent. Maximum grade after . per cent. As was pointed out in the opening paragraph, gravelconstituted an important material of construction. As anexample of a gravel road the Monmouth Boulevard will serveto illustrate. This road is miles long, and was builtunder the following specifications:— Road gravel A is to be composed of pebbles,chert, sand, clay and oxide or hydrate of iron, insuch quantities that the gravel will pack underpressure into a hard, dense pavement. It willbe judged solely by comparison with the samplesfurnished. Road gravel B is gravel not deemed suitablefor surface work, but may, on approval ofsample by the engineer and State Commissionof Public Roads, be used for foundations ofgravel * Chief Engineer for the York Highway Commission,Toronto, Ont. Yardville-Allentown Road, After. Water-Bound Macadam;Surface Oil. The gravel of which the road was built was spread toa width of from sixteen to eighteen feet, and the entireroadway was graded to a width of thirty feet. The value of this improvement is well attested by thealmost constant, continuous traffic passing over it. June 20, 1912. THE CANADIAN ENGINEER Width of gravel-bed, 16 and 18 of gravel shoulders, 6 of gravel-bed, 13,809 of gravel-bed, 8 or gravel shoulders, 4 inches. Gravel (A), 6,081 cubic yards, at $; $13, shoulders (B), 1,729 cubic yards, at $; total 3, 5 Earth excavation (A), 10,944 cubic yards, at 25 cents; total 2, Earth excavation (B), 1,164 cubic yards, at 25 cents; total Drain, 4,000 lineal feet, at 12 cents ; total 12-inch pipe relaid, 425 lineal feet, at 8 cents; total 34-00 Tota
Size: 1791px × 1395px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
