Chicago : Engineering and Contracting Pub. Co. · leaf 526
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… … Masonry .Area 3535qFtMeariThickness I—. 345/.Height Fig. 8—Section of Chamber Walls, KentuckyRiver, Lock No. 6. found to be 2.85 ft. The center of gravity be-ing 6.47 ft. from the front face of the wallthe center of pressure will be 6.47— 2.85, or3.62 tt. from the front face or 1.21 ft. outsidethe…
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