. Concrete bridges and culverts, for both railroads and highways . or both single and double track structuresis given on the chart, Figure 66. The horizontalordinates represent clear spans in feet, while thevertical ordinates give the costs in dollars for acomplete span, not including piers. This chartclearly shows that reinforced concrete trestles ofthe types marked E and F with rod reinforcementare more economical than any other form of perma-nent trestle, with solid roadway. The chart showsfurther that reinforced concrete railroad trestlespans of slab constructions are economical for single
. Concrete bridges and culverts, for both railroads and highways . or both single and double track structuresis given on the chart, Figure 66. The horizontalordinates represent clear spans in feet, while thevertical ordinates give the costs in dollars for acomplete span, not including piers. This chartclearly shows that reinforced concrete trestles ofthe types marked E and F with rod reinforcementare more economical than any other form of perma-nent trestle, with solid roadway. The chart showsfurther that reinforced concrete railroad trestlespans of slab constructions are economical for singletrack in spans up to 14 feet, and for double trackin spans up to 20 feet. Above these lengths theeconomic form of span is a combination of beamand slab. Comparative Cost of Short Span Bridges. ..._ . .__ _.^ 1 - - i ^ AOiC&l^Z. ^tiXA- J X - i f , Z7ca 7 / it ^ ^ / y i J 1 ^ / / f .iap / / :jz ^ /t 4^ Z 7 ^ -, 1 / y Z2 / / r y ,c y^^y \ If: :^/=^ ^$ i5= i 1 1 r ^. INDEX. Page Abutments 55, 57, 14S Movements of 10 Rankines Rules for 58 Trautwines Rules for 55 Abutment Piers 11, 54, 70 Trautwines Rules 55 Adda River Bridge 80 Adhesion. Concrete to Steel 108, 114. 116, 126, 186 Advantages of Masonry 1 Aisne River Bridge 176 Almendares, Cuba 97Augustus, Bridge of. . .3, 75, 76 Anthony Kill Bridge 97 Anderson. L. W 16rt Approximate 32 Aqueduct of Vejus 106 Arcade—Spandrels 19 Arch Ring. Thickness of. 50, 51 Architectural Design 100 Area of Arch Ring. Required 69Atlantic Highlands Georgia, .189Auckland. New Zealand, Bridge 80 Austell. Georgia, Bridge 178 Austrian Experiments 105 Avranclie, France, Backing 52 Bakers Masonrv Construc-tion 59, 218 Balustrade 187 Batter of Piers 150 Bearing Power of Soils 59 Bellefleld Bridge, Pittsburg. 18 Beam Bridges 181, 183 Advantages of 183 Cost of 185 Design of 185 Bending Moments 133,135 Biddle, Col. John 89 Binnie 96 Big Muddy River B
Size: 1482px × 1687px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidconcretebrid, bookyear1909
