CIV100H1 Lecture Notes - Lecture 35: Silt

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Civ100 lecture 35 - fluid statistics (concluded) Weight is 3000 kg ; gate is 5m wide: w (3000 * 9. 81)n = 29. 43 kn. Pressure: p1 at a = (1000 kg /m3) (9. 381) (10m) = 9. 81 kn/m2, pz = gh2 = (1000)(9. 81)(2. 2) = 21. 582 kn/m2. Fbd of forces acting on the solid gate: ra (9. 81 ln/m2) (1. 5,) (5m) = 73. 575 ln, rb (21. 582-9. 81 / 2) (1. 5m) (5m) 44. 145kn, rc (21. 583 ln/m2) (0. 9m) (5m) 97. 119kn. Sum of ma = 0 00> (29. 43 * 0. 3m) + (73. 575 * 0. 75) + (44. 145 * 1. 0) - (97. 119 * 0. 45) - f(0. 9) = 0: therefore, f= 71. 6kn in tension. 5m dam wall in length ; 4m of fresh water and 2 m of silt. Question: determine the turning moment caused by the silt and water about point. A: p = p0 (based pressure) + ( gh, higher pressure.

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