PROBLEM 1. The section of a gravity dam is as shown in the figure. Assume hydrostatic uplift "U' to vary uniřormly frcm full hydrostatic uplift from the heel to zero at the toe. Determine the resultant acting at the base of the dam. Given the vertical forces, W1-224,640 Ibs., W2-44,928 lbs., W3-71,834.3 lbs., W4-56,160 Ibs., U=131,040 lbs., and a horizontal force F=112,320 bs. Resultant = 4 pts. W1 W2 WATER W4 10 W3 10 HEEL TOE

PROBLEM 1. The section of a gravity dam is as shown in the figure. Assume hydrostatic uplift "U' to vary uniřormly frcm full hydrostatic uplift from the heel to zero at the toe. Determine the resultant acting at the base of the dam. Given the vertical forces, W1-224,640 Ibs., W2-44,928 lbs., W3-71,834.3 lbs., W4-56,160 Ibs., U=131,040 lbs., and a horizontal force F=112,320 bs. Resultant = 4 pts. W1 W2 WATER W4 10 W3 10 HEEL TOE

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter14: Lateral Earth Pressure: Curved Failure Surface

Section: Chapter Questions

Problem 14.15P: The cross section of a braced cut supporting a sheet pile installation in a clay soil is shown in...

See similar textbooks

Similar questions

A concrete gravity dam with a trapezoidal section is holding water as shown in the figure. A distance of 15 meters from the toe, a drain is located. The drain has a pressure due to uplift of zero and increasing uniformly to full hydrostatic at the heel. Upstream face 1H:5V, while downstream face is inclined 1H:2V. Which of the ff nearly gives the maximum foundation pressure on the base of the dam in kilopascal ? Assume 23.54 kN/m3 for the unit weight of concrete. a. 3114 b. 1095 c. 4115 d. 964 e. 680
5. What is the factor of safety against overturning for the triangular dam? Determine the pressure distribution at the base of the dam. Neglect hydrostatic uplift. Use unit weight of concrete 24kN/m³.
A trapezoidal dam having a top width of 0.60m and a bottom width of 1.2m is 1.8m high. The depth of water on the vertical side of the dam is 2.4m. Unit wt. of concrete is 23.5 kN/m3. Neglecting hydrostatic uplift. Determine the total horizontal hydrostatic force acting on the dam, the factor of safety against overturning and the factor of safety against sliding if coefficient of friction between the dam and the soil is 0.80.
A damn having a triangular section has a vertical face 24 m high and base 12 m wide. Use sg=2.4 a. determine the height of water that could rise on the vertical side of the dam so that the maximum intensity of pressure at the toe is twice the average pressure at the base. Neglect hydrostatic uplift. b. What is the shearing stress at the base?
A trapezoidal dam with vertical upstream face is 6m high, 0.6m at the top and 3m wide of the bottom. Unit weight of concrete is 23.5 kN/m^3 Using the computed depth of water, compute the hydrostatic uplift force (pound-force) if the uplift varies from full hydrostatic pressure at the heel to zero at the toe using yards instead of meters
A dam is triangular in cross section with the upstream face vertical. Water is flush with the top. The dam is 8 m high, 6 m wide at the base and weighs 23.5 kN/m3 . The coefficient of friction between the base and the foundation is 0.80. There is hydrostatic uplift that varies from full hydrostatic pressure at the heel to zero at the base. b.) Determine the factor against overturning.
A concrete gravity dam has the following data: Maximum water level = 300.00 m Bed level = 220.00 m R.L top of dam = 304.00 m %3D The d/s slope of 0.67:1 starts at RL of 295.00 m U/s face is vertical. Center line of the drainage gallery = 8.0 m from u/s face. Consider only weight of dam, water pressure and uplift pressure. Calculate only the normal stresses at the toe and heel of the dam, assuming 100% uplift pressure at the h eel and 50% at the gallery and zero at the toe.
. If the stress at the toe of a trapezoidal dam is the maximum stress at the base and is equal to 172.6675 kPa, determine the width of the base. The eccentricity is 0.0427 m and the weight of the dam is 993.600 kN. Neglect uplifting force.
In the figure shown, the concrete dam is 16m high and 13m wide at the base. If the specific weight of the concrete is 23.544KN/m^3 and height of water in the upstream side is 15m, find the factor of safety against sliding, factor of safety against overturning, and the unit pressure on the foundation. Assume there is a hydrostatic uplift that varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe and that the coefficient of friction between the dam and the foundation is 0.50.
how can reduce the effect of uplift force on the base of the dam
A masonry dam (sp.gr. = 2.4) of trapezoidal cross-section is 20 m high. It has a thickness of 2 m at the top and 14 m at the bottomas shown in the figure.Coef. of friction under the foundation is 0.80 and assuming there is hydrostatic upliftthat varies linearly from one-half the hydrostatic head at the upstream edgeof the dam to zero at the downstream edge.Determine
A vertical triangular plate whose height is 3.6 meters has its base horizontal and vertex upper most in the water surface. a. Find the depth to which it must be lowered from its vertex so that the difference in level between the center of gravity and the center of pressure shall be 20cm. b. How far is the center of pressure below the water surface? c.What is the base width of the plate if the total hydrostatic force acting on the plate is 76.28 kN?