Situation 10: The vertical face of a trapezoidal concrete dam (s = 2.40) supports water to a depth of 16m. Uplift pressure at the base of the dam varies from full hydrostatic pressure at the heel to zero at the toe. The total height of the dam is 18m, upper base width is 1.50m, and the bottom base width is unknown. 32. Which of the following most nearly gives the minimum safe bottom base of the dam if the factor of safety against overturning is 1.60? a. 13.15m b. 12.03m 33. Which of the following most nearly gives the factor of safety against sliding if the coefficient of friction between the soil and the base of the dam is 0.75 using the calculated base in the previous question? а. 1.15 b. 1.25 c. 11.06m d. 10.40m C. 1.05 d. 1.00
Situation 10: The vertical face of a trapezoidal concrete dam (s = 2.40) supports water to a depth of 16m. Uplift pressure at the base of the dam varies from full hydrostatic pressure at the heel to zero at the toe. The total height of the dam is 18m, upper base width is 1.50m, and the bottom base width is unknown. 32. Which of the following most nearly gives the minimum safe bottom base of the dam if the factor of safety against overturning is 1.60? a. 13.15m b. 12.03m 33. Which of the following most nearly gives the factor of safety against sliding if the coefficient of friction between the soil and the base of the dam is 0.75 using the calculated base in the previous question? а. 1.15 b. 1.25 c. 11.06m d. 10.40m C. 1.05 d. 1.00
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:Situation 10: The vertical face of a trapezoidal concrete dam (s = 2.40) supports water to a
depth of 16m. Uplift pressure at the base of the dam varies from full hydrostatic pressure at the
heel to zero at the toe. The total height of the dam is 18m, upper base width is 1.50m, and the
bottom base width is unknown.
32. Which of the following most nearly gives the minimum safe bottom base of the dam if
the factor of safety against overturning is 1.60?
а. 13.15m
b. 12.03m
33. Which of the following most nearly gives the factor of safety against sliding if the
coefficient of friction between the soil and the base of the dam is 0.75 using the
calculated base in the previous question?
а. 1.15
с. 11.06m
d. 10.40m
c. 1.05
b. 1.25
d. 1.00
34. Which of the following most nearly gives the minimum stress that is likely to occur at the
toe of the dam?
a. 159.90kPa
c. 284.60kPa
b. 34.38kPa
d. 65.20kPa
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