A concrete dam retaining water is shown in the figure. If the specific weight of concrete is 23.5 kN/m. Assume hydrostatic uplift varies uniformly from full hydrostatic pressure at the heel of the dam to zero at the toe and that the coefficient of friction between the dam and the foundation is 0.55. Find the factor of safety against overturning. -4.0 3.0 12.0 11.0 12.0
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- Situation 11: A concrete dam retaining water is shown in the figure. Assume that the hydrostatic uplift varies linearly from full hydrostatic head at the heel of the dam to full hydrostatic head at the toe. Coefficient of friction between the dam and the foundation soil is 0.60. Unit weight of the concrete is 23.50kN/m3. 2m 3m 4 15m 6m 35. Which of the following most nearly gives the factor of safety against overturning? a. 0.8689 b. 0.8526 c. 1.2131 d. 1.2172 36. Which of the following most nearly gives the factor of safety against sliding? c. 1.2172 d. 0.8526 a. 1.2131 b. 0.8689 37. Which of the following most nearly gives the maximum pressure intensity at the base of the dam? a. 557.68kPa b. 675.00kPa C. 489.52kPa d. 622.04kPaA concrete dam retaining water is shown in the picture. If the specific weight of concrete is 23.5 kN/m3 , 1. what is the total hydrostatic force? 2. Find the maximum intensity of pressure? 3. What is the factor of safety against overturning? 4. Find the factor of safety against sliding if the coefficient of friction is 0.50? 5. Find the resultant force? 6. Find the location of the resultant? 7. Determine the minimum intansity of pressure?A rectangular dam having a width of 15 m has a height of 24 m. The depth of the water on one side of the dam is 22 m. If the coefficient of friction between the dam and the foundation is 0.85. Compute the factor of safety for sliding if its density of concrete is 2310 kg/m^3. CHOICES: a.) 0.29 b.) 2.29 c.) 2.92 d.) 9.22
- A concrete dam retaining water is shown in FIGURE FMHF-1. If the specific weight of concrete is 23.5 kN/m^3, determine the following: Factor of safety against sliding (coefficient of friction: 0.48)a. 2.48 b. 1.34 c. 3.77 d. 3.42 39. Factor of safety against overturninga. 1.34 b. 3.105 c. 3.416 d. 1.987 40. Maximum soil pressure intensitya. 73.22 b. 183.48 c. 173.53 d. 58.48六 Laboratory Problem Exercise #2 1m water surface Given the figure and the following data: 2m G. Determine (a) the width of base b on the conditions: 7 m a.1 The resultant intersects the base at the downstream edge of the middle third. GOY h a.2 If the factor of safety against overturning is 1.60 a.3 If the factor of safety against sliding is 1.20 T Yw = 1 m3 T Ye = 2.4- Which b among the three prevails? (Note T is ton) II (coefficient of friction between the base and foundation (b) Using the value of b that prevails in part (a), determine H = 0.60 b.1 the intersection of the resultant with the base b.2 the maximum and minimum pressure intensity at the base. % of seepage below the base is 60.A concrete dam retaining water is shown below, if the specific weight of concrete is 23.5 KN/m, find the factor of safety against sliding, the factor of safety against overturning, and the pressure intensity on the base. coefficient of friction between dam and foundation soil is 0.45 ? (y water 9.8 KN/m').
- The canal shown below runs 40 m into the paper. Assume unit weight of H20 is 9.79 kN/m^3. Determine the horizontal component of the hydrostatic force against the quarter circle wall. 18m 40 18m 18 Unit of the Correct Answer: kN Decimal Places required in the final answer: 1 --A rectangular gravity dam has a height of 5 m. it retains water 4.2 m deep. Calculate the minimum width of the concrete dam that is necessary to prevent the dam from sliding. The specific gravity of the concrete is 2.4 and the coefficient of friction between the base of the dam and foundation is 0.5. Use factor of safety against sliding of 1.5. a. 2.556 m b. 1.963 m c. 2.292 m d. 2.205 mA dam is triangular in cross-section with water in the stream side that is shown in the figure. The dam is 7Zm high and 6m wide at the base. The coefficient of friction between the base and the foundation is 0.8. Determine the maximum soil pressure of the foundation. Consider 1 meter length of dam. NOTE: Disregard the question on the image and the numbers. a concrete dam is triangular in cross- yWS section with the upstream face vertical. Water is flushed with the top. The dam is 8 m high and 6 m wide at the base. The specific gravity of concrete is 2.4. The coefficient of friction between the base and the foundation is 0.8. Determine the 8 m factor of safety against overturning, sliding and determine the maximum and minimum pressure on the foundation. Heel Toe 6 m
- Answer the following: a. hydrostatic force acting on a wall b. weight of dam if the unit weight of concrete is 23.54 kn/cum c. overturning moment d. location of the resultant measured from the toe of the dam27m 3m 4m 2 1 Toe Heel Example (6): Check the dam in example (5), for stability against overturning and sliding if the coefficient of friction between the dam base and the foundation is 0.65?A concrete dam retaining 6 m of water is shown in the figure. The unit weight of the concrete is 23.5 kN/m3. The foundation soil is impermeable. Determine (a) the factor of safety against sliding, (b) the factor of safety against overturning, and (c) the pressure intensity on the base of the dam. The coefficient of friction between the base of the dam and the foundation soil is 0.48.