Chicago : Engineering and Contracting Pub. Co. · leaf 573
r,6 ydH. 56 cu. ydH. at $10 00 per eu yd....: 560 Total 17.88 The above approximate comparison of 8imall part of the G abutment with the cor-responding part of In abutment xives a rationbetween the parts i outpaced, of 21 per cent The actual cost of the type G abutment isabout 75 per cent of the B3… … ■ps /550O*3 Fig. 29. Diagram Illustrating Economy ofTieing Side Walls. requirements of «n and m% against overturn-ing. The width of footings, measured alongthe center line of track, which is effectiveagainst overturning of type B2, is 13 ft. 9 ins.That of type G is 18 ft. The correspondingdimension…
Buildings
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