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
(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. … 2 Portals:—Concrete 43.4yds. (&t8,0)=f347.2Steel 2670 lbs. @ .04= 106.81454.0 00 = $26.4 .04= 9.2 $35.6 AreB = 128 sq. ft. Length for 120 ft. bank = 39 ft. Cost for 20 ft. br.nk, $1844. Fig. .-.( CONCRETE CULVERTS AND TRESTLES. 227 R is the hpi<z-lit in feet, and D the crown thicknessin…
Bridges, Concrete · Culverts
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
