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 14.17CTP
To determine
Find the Rankine’s and Coulomb’s active passive pressure coefficients for
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Chapter 14 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- 3. Calculate and draw to scale the earth pressures along the back of the retaining wall in the Figure 1. Then calculate the over-turning moment around point o . p = 1800 kg/m3 C = 0 kPa 1.5m P = 22 p = 1600 kg/m³ c =15 kPa O = 18 1.5m 0.5m Point O 0.5m 1m Figure 1arrow_forwardA vertical cantilever wall 6 m high retains soil that has a following properties Unit weight of soil = 19.2 kN/m^3 Angle of friction = 30 degrees The surface of the backfill behind tthe wall is inclined at a slope of 3 horizontal to 1 vertical and the wall has moved sufficiently to develop the active condition. a) Determine the Rankine Coefficient of active earth pressure. b) Find the normal force acting at the back of the wall considering a unit width. (in kN). c) Determine the shear force acting at the back of the wall. (in kN)arrow_forwardPlease find the earth pressure at rest distribution value and resultant force on the retaining wall in figure below. The static side pressure coefficient is 0.5.arrow_forward
- Determine the active lateral earth pressure on the frictionless wall shown in the figure below. Sketch the lateral earth pressure distributions and calculate the resultant force and its location from the base of the wall. Also, determine the moments of passive and active forces. Neglect seepage effects. Use Rankine's earth pressure method. (w = 10 kN/m) 3.0m Ysat 20 kN/m³ y = 19 kN/m²³ ' = 30° Ysat = 20 kN/m³ y = 18 kN/m³ o = 28 6.0marrow_forward4. An L-shaped raft as uniform pressure of 80 kPa. Determine the vertical stress increase at 8 m below the ground level: shown lies at the ground level and applies a a. beneath point A using influence values b. beneath point A using Newmark's chart 20m 10m 20m 10marrow_forwardDetermine the magnitude and location of the resultant hydrostatic forceacting on the submerged rectangular plate AB shown.The plate has a width of 1.5 m; ρw = 1000 kg/m3.arrow_forward
- Calculate the active and passive earth pressures AND. determine the distance at which the net active and passive force will acting on the retaining wall Ya=19 kN /m3 - 34 c=3kp 2m 6=34 %3D Vd = 17.54kN/m3 8=32"; ċ=o %3D 1.5m %3D = 21. BkN/m3 V sat 8= 31; c'= o %3D 1.5m %3D Ysat = 22.lkN/m3 5 m 8=30;cioarrow_forwardA vertical wall 6 m high above the water table, retains a 20° soil slope, the retained soil has a unit weight of 18 kN/m³, the appropriate shear strength parameters are C = 0 and + = 40°. The coefficient of active earth pressure to be used in estimating the active pressure acting on the wall isarrow_forwardWater flows over a flat plate at a free stream velocity of 0.20 m/s. There is no pressure gradient and boundary layer thickness at the location is 8 mm. Assuming a sinusoidal velocity profile given by и == sin- where, & is the boundary layer thickness, VO is the free Vo steam velocity and u is the velocity at a distance y from the wall. Determine the value of local shear stress at the wall, if p= 1.02 × 10-3 Ns/m² and p = 1000 kg/m³ %3Darrow_forward
- Active earth pressure per meter length on the retaining wall with a smooth vertical back as shown in the figure will be SAND 3 Y 2t/m O= 30° H= 9 marrow_forwardA retaining wall 7 m high, with its back face smooth and vertical. It retains sand with its surface horizontal. Using Rankine’s theory, determine the active earth pressure at the base when the backfill is submerged with water table at the surface. Take γ=18 kN/m^3 ,ϕ=30°, γ_sat=21 kN/m^3.arrow_forwardDetermine the active Rankine earth pressure (magnitude and location) against the 1-foot thick retaining wall in the figure at right. 15 ft 1.5 ft 2 ft 4 ft Sand c=0 1 = 28° Y = 127 lb/ft³arrow_forward
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