. Railroad structures and estimates . TABLE 84. — APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT. Items. Excavation BackfiU, Piles (wood) Drainage Concrete (plain) Concrete (reinforced).Steel Supervision Total cost per lineal foot of viaduct. :;ection A (22 ft. 6 in. high),reinforced wall. 6 cu. cu. lin. lin. cu. yds. 5 cu. lbs. 6 sq. cu. (about) $ $ $ Section B (22 ft. 6 in. high),semi-gravity wall. 6 cu. y
. Railroad structures and estimates . TABLE 84. — APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT. Items. Excavation BackfiU, Piles (wood) Drainage Concrete (plain) Concrete (reinforced).Steel Supervision Total cost per lineal foot of viaduct. :;ection A (22 ft. 6 in. high),reinforced wall. 6 cu. cu. lin. lin. cu. yds. 5 cu. lbs. 6 sq. cu. (about) $ $ $ Section B (22 ft. 6 in. high),semi-gravity wall. 6 cu. yds. $ 3 cu. yds. 60 lin. ft. Per lin. ft. cu. yds. Nil. Nil. 500 lbs. 6 sq. yds. 38 cu. yds. 10% (about) $ Nil. $ Ties, ballast, rail and fastenings, or hand rail, common to all schemes are not included. (169) 170 COST OF VL\DUCT —FILL AND RETAINING W.\LLS. CELLULAR RETAINING WALL, MILWAUKEE TRACK TRACK VIADUCT, RETAINING
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