. Railroad structures and estimates . U- I I If I I Typical Section, Steel Viaduct, Concrete Floor, Section A, FOUR TRACK VIADUCT STEEL OPEN TIE FLOOR rlSO^!——8o- -J: r-- r-\ n, II I I > i I I I M I ; ^ ^^ ii \] I! Bock II II M|l I I I I U u U. I I I Typical Section, Steel Viaduct, Wood Floor, Section B. TABLE 81. — APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT OF VIADUCT. Items. Excavation Backfill Concrete, plain footings Concrete, reinforced (fl. slabs).. Piles (wood) Drainage Steel (structural) Steel reinforcement Wood floor Waterproofing (fl. slabs) Ballast (stone) • Handrailing Supe
. Railroad structures and estimates . U- I I If I I Typical Section, Steel Viaduct, Concrete Floor, Section A, FOUR TRACK VIADUCT STEEL OPEN TIE FLOOR rlSO^!——8o- -J: r-- r-\ n, II I I > i I I I M I ; ^ ^^ ii \] I! Bock II II M|l I I I I U u U. I I I Typical Section, Steel Viaduct, Wood Floor, Section B. TABLE 81. — APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT OF VIADUCT. Items. Excavation Backfill Concrete, plain footings Concrete, reinforced (fl. slabs).. Piles (wood) Drainage Steel (structural) Steel reinforcement Wood floor Waterproofing (fl. slabs) Ballast (stone) • Handrailing Supervision Total cost per lin. ft. of viaduct. Section A, concretefloor. 4 cu. cu. | cu. | cu. 1. lin trk. ties7 sq. | cu. lin. (about) $ $ $ Section B. wood floor. 4 cu. yds. $ 2 cu. yds. 2| cu. yds. Nil. Nil. 35 1. ft. Per lin ft. 3800 lbs. Nil. Nil. 4 lin. ft. Nil. Nil. Nil. Nil. 2 lin. ft. 10% (about) $ Nil. Nil. Nil. $ Rails and fastenings common to any sche
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