Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 9, Problem 9.10P
To determine
Find the required height (h) of water inside the cut in order to ensure a factor of safety of 1.5.
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A rectangular channel 6 m wide and 1.5 m deep has a slope of 1 in 1200 and is lined with good rubble masonry, for which Manning's, n = 0.019. It is desired to increase the
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1.Prove the best hydraulic section for a rectangular channel. 2.Determine the best cross section for a semi~circular cross section
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Principles of Geotechnical Engineering (MindTap Course List)
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- 6. Please give the proper solution and give the correct answer.arrow_forwardO DrahmedsoilMechanicsnoteschapter5.pdf s/DrahmedsoilMechanicsnoteschapter5.pdf A V - 14 A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand. The sand is under artesian pressure. A 5.75-m-deep cut is made in the clay. What would be the maximum permissible depth of cut before heaving would occur. Determine the factor of safety against heaving at point A. Ans.: H =6.88m, FOS = 1.36 P = 1925 kg/m 5.75 m 10 m Saturated clay 6 m Sand Par - 1840 kg/m 2.5 m Soil Mechanics Assistant Prof. Dr. Ahmed Al-Obaidi Civil Eng Dept - College of Eng. (173) 5.15 Refer to Problem 5.14. Water may be introduced into the cut to improvearrow_forward2. A rectangular channel has a base width of 7m and filled with water at a depth of 0.8m with a Froude Number of 5 before conducting a hydraulic jump. a. Find the Froude Number after the jump. b. What is the head lost due to the jump?arrow_forward
- Please give me complete right solutionarrow_forward“ANS” is the professor’s provided answer.arrow_forwardThe figure shows a weir, the base of which is 6m below the ground. The necessary flow net has also been drawn assuming Kx = Kv = K. K = 0.005 m⁄sec. Compute the following: rate of seepage through the foundation in liters/sec. uplift pressure at“f”. uplift force per unit length measured along the axis of thearrow_forward
- 7. Refer to the following channel cross section. (a) What is the normal depth? (b) What is the cross-sectional area of flow? (c) What is the wetted perimeter? (d) What is the hydraulic radius? 3 1 0.5arrow_forwardA cutting is made in clay y=20kN/m³, ¤ =0, c = 35 kN/m2. Take FOS= 1.5 and Sn = 0.17. Maximum depth of cutting will be, 5.86 10.29 m 6.86 m 9.29arrow_forwardQ-3: A cut is made in a stiff, saturated clay that is underlain by a layer of sand (following figure). What should be the height of the water, h, in the cut so that the stability of the saturated clay is not lost? H = 5 m 7m 2 m ↓ Saturated clay Sand Ysat 19 kN/m³ 4.5 m Ysat = 18 kN/m³arrow_forward
- Consider the simple pipe network below. Pipe AB and CF are both 500m long withdiameters of 0.8m and friction factors of 0.015. Branch 1 is 200m long, 0.5m in diameter with a frictionfactor of 0.02. Branch 2 is 300m long, 0.6m in diameter with a friction factor of 0.012. The designdischarge through pipe AB is 3m 3 /s. Determine the following: a) the equivalent pipe length, Leq, of asingle equivalent pipe with a diameter of 1m and friction factor of 0.02, that represents the entire pipenetwork from A to F, b) determine the total head loss from A to F. Ignore minor losses. (Hint: need touse method of equivalent pipes for both series and parallel)arrow_forwardQ.civil,.arrow_forwardRefer to the channel cross section shown in problem 7 in ch 6. If the channel slope is 1.75% and the lining is concrete (trowel finish) what is the disharge and velocity?arrow_forward
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