. Railroad structures and estimates . 3-lX But Fig. 19h. Fig. 19j. Figures 19h and 19j illustrate a semi-gra^dty and a straightreinforced retaining wall used in grade separation work. The semi-gravity wall was built 22 ft. 6 in. high with pile foundation, thereinforced v/all 25 ft. high on ground that did not require figures given are from the bottom of footing to top of wall ineach case. TABLE 49. —APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT OF WALL. Items. Section wall (22 in. 6 ft. high). Section wall (25 ft. high). Excavation Backfill Piles (wood) Dr
. Railroad structures and estimates . 3-lX But Fig. 19h. Fig. 19j. Figures 19h and 19j illustrate a semi-gra^dty and a straightreinforced retaining wall used in grade separation work. The semi-gravity wall was built 22 ft. 6 in. high with pile foundation, thereinforced v/all 25 ft. high on ground that did not require figures given are from the bottom of footing to top of wall ineach case. TABLE 49. —APPROXIMATE ESTIMATE OF COST PER LINEAL FOOT OF WALL. Items. Section wall (22 in. 6 ft. high). Section wall (25 ft. high). Excavation Backfill Piles (wood) Drainage Concrete, plain Steel reinforcement. Waterproofing Supervision 3 cu. yds. H cu. lin. lin. ft. cu. lbs. 3 sq. (about) Total cost per lineal foot of $ 5 3 012 130. 7. 0. 5. $61 007500004050756000 3 cu. yds. 1^ cu. lin. lin. cu. lbs. 3 sq. (about) $ J $ CRIB W
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