ater backs up behind a concrete dam as shown in the figure. Leakage under the foundation gives a pressure distribution under the dam as Pressure at B = (unit weight of water) (height of water at the upstream) and Pressure at A = (unit weight of water) (height of water at the downstream). If the water depth, h, is too great, the dam will topple over about its toe (Point A). For the dimensions given, L = 120 ft, h = 50 ft (height of water at the upstream), h = 10 ft (height of water at the downstream) and height of the dam = 80 ft. Base your analysis per 1-unit length of the dam perpendicular to the paper. The specific weight of the concrete is 150 lb/ft^3. What is the horizontal component of hydrostatic force on the upstream side?
Water backs up behind a concrete dam as shown in the figure. Leakage under the foundation gives a pressure distribution under the dam as Pressure at B = (unit weight of water) (height of water at the upstream) and Pressure at A = (unit weight of water) (height of water at the downstream). If the water depth, h, is too great, the dam will topple over about its toe (Point A). For the dimensions given, L = 120 ft, h = 50 ft (height of water at the upstream), h = 10 ft (height of water at the downstream) and height of the dam = 80 ft. Base your analysis per 1-unit length of the dam perpendicular to the paper. The specific weight of the concrete is 150 lb/ft^3. What is the horizontal component of hydrostatic force on the upstream side?
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