Chicago : Engineering and Contracting Pub. Co. · leaf 526
he characterof the filling material or how the fill wasmade, but we will assume that the naturalslope, <P was about \l/2 to 1, or, say, 30°, andthat the weight of the filling material was 100lbs. per cubic foot. Taking a section of thewall 1 ft. long and substituting the values inthe equation… … Land Wall River Wail Fig. 5—Section of Chamber Walls, KentuckyRiver, Lock No. 12. the base will be ivo M = Jj3 18 M being the overturning moment. Substitut-ing the value of 7i=31.5 ft., we find M tobe 173,(540 ft.-lbs. Assuming the masonry to weigh 150 lbs.per cubic foot, the weight of the wall is…
Buildings
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