Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 14, Problem 14.5P
(a)
To determine
Find the passive force
Find the Rankine’s passive pressure at the bottom of the wall.
(b)
To determine
Find the passive force
Find the Rankine’s passive pressure at the bottom of the wall.
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Q 11.6
12.3
Refer to Figure 12.12a. Given: H = 4 m, y = 16.5 kN/m³, ' = 30°, c' = 0, and
B = 85°. Determine the Coulomb's active force per meter length of the wall
and the location and direction of the resultant for the following cases:
a. a 10° and 8' = 20°
b. a = 20° and 8' = 15°
Refer to the Coulumb Active Earth Pressure. Given alpha = 10 degree; Beta=85 degrees;H - 4m;unit weight of soil = 15 kN/m^3; soil friction angle = 30 degree; and sigma=15 degrees. Estimate the active force, Pa, per unit length of the wall. Also, state the direction and location of the resultant force, Pa.
Chapter 14 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- A) Figure (2) shows the velocity distribution for flow of water between two parallel plates. Velocity profile: u = 10(0.01y - y²). D Find: 1) The value of Y. 2) Shear stress at the wall. 3) Shear stress at 20μm from the wall. 4) Location of zero shear stress 5) Location of maximum velocity. Figure (2) water at 20°Carrow_forward2.57 The velocity distribution for water (20°C) near a wall is given by u = distance from the wall in mm. Determine the shear stress in the a(y/b)1/6, where a = 10 m/s, b = 2 mm, and y is the water at y = 1 mm.arrow_forwardRefer to Figure 12.13a. Given H = 4 m, α = 0, β = 85º, γ = 17 kN/m3, c' = 0, Φ' = 36º, ẟ'/Φ' = 0.5, and q = 30 kN/m2. Determine the Coulomb’s active force per unit length of the wall.arrow_forward
- 3. A cylindrical tank oriented vertically is 6 m high and 3 m in diameter. The wall has a thickness of 10 mm. If the tank is filled with water (Use Ywater = 9.81 kN/m³ and note that p = yh), (a) calculate the circumferential stress, (b) calculate the longitudinal stress. Express your answers in MPa. 4. A cylindrical tank is 5 mm thick and has an outside diameter of 600 mm. If the allowable tensile stress in the wall is 150 MPa, determine the maximum safe internal pressure (MPa) in the tank.arrow_forward14.9 In Figure 14.13a, let H = 6 m, y = 16.5 kN/m², o' = 30°, 8' = 20°, c' = 0, a = 10°, and ẞ = 80°. Determine the Coulomb's active force per meter length of the wall and the location and direction of the resultant force.arrow_forwardFor the frictionless wall shown in Figure No 1, Calculate the following: (a) The active lateral earth pressure distribution with depth. (b) The passive lateral earth pressure distribution with depth(c) The magnitudes and locations of the active and passive forces. (d) The resultant force and its location. (e) The ratio of passive moment to active moment. Note: UDL should be considered as mentioned in the figurearrow_forward
- Home work B 8 mm y 1.28 m/s A B μ= 0.05 From the figure, find the velocity rate and shear stress at the wall surface and at distance 20, 40, 60 mm from the wall surface. At: A: the velocity profile liner. B: the velocity profile is given as equation : V(y) = Vo-200 (B − y)² Where: V, is maximum velocity, B is the depth of fluid.arrow_forwardConsider the retaming wall shown in the Figure below Calculate the Rankine passive force per unit length of the wall and the location of the line of action of that resultant at which it acts on the retaining wall. 15.72KN/m3 1=30 C1=0 WT "sat= 15.72KN/m3 12=26 C1=10KN/m2 2 marrow_forwardIf the wall in the figure below has a length d1, height d2, and thickness 0.1 d2, and has a weight density of 20 kN/m3, then the distributed dead load of the wall * :along its length in kN/m is d16.1 d2=5.1 d2 A di В 0.1d2arrow_forward
- Prob. 4 13.17 Figure 13.10 shows a frictionless wall with a sloping granular backfill. Given: H = 4 m, a = 10°, ø' = 33°, and y = 19 kN/m³. a. Determine the magnitude of active pressure, o, at the bottom of the wall. Also, state the direction of application of o. b. Determine the Rankine active force, Pas per unit length of the wall and its location and direction. H oa Frictionless wall Figure 13.10 Frictionless vertical retaining wall with sloping backfill © Cengage Learningarrow_forwardQ.2 The thin-walled section is shown in figure has uniform wall thickness of 0.5 in. Assume a = 1 in, b = 3 in, h = 8 in. if it is subjected to vertical downward shear force, V = 1200 lb. a) Draw the shear flow diagram for the cross section. b) Compute the distance e from the center line of the wall to the shear center S.arrow_forward3. A cylindrical tank oriented vertically is 6 m high and 3 m in diameter. The wall has a thickness of 10 mm. If the tank is filled with water (Use Ywater = 9.81 kN/m³ and note that p= yh), (a) calculate the circumferential stress, (b) calculate the longitudinal stress. Express your answers in MPa.arrow_forward
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