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Concrete bridges and culverts, for both railroads and highways (1909)
Tyrrell, H. G. (Henry Grattan), b. 1867 · Chicago The M.C. Clarke publishing co. [etc.] · leaf 245
2 Portals:— Concrete 47 yds. @ 18.00 =Steel 1600 lbs. @ .04 = Barrel per ft. Concrete 3.1yds. (p: $8.00=— 170 lbs. @ .04 = Area = 92 sq. ft. Length forbank = 42 ft. Cost forbank, ^780. = $376 = 64$i4U =$24.8: 6.8 $31.620 ft.20 ft. y Oorro/n i 7~o f Tig. 54. 226 CONCRETE BRIDGES AND CULVERTS. … (704 2 Portals;— Concrete £8 yes. (u fS.Ol) Barrel per ft. Concrete 7.25 yds. (Ti $8.00=158.0 Steel 460 lbs. (n, .04= 18.4 *76 4 Length for 20 ft. bank = 32 ft. Area = 215 sq. It. Cost 13150.Bridges, Concrete · Culverts
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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