Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 17, Problem 17.2P
To determine
Find the factor of safety against overturning, sliding, and bearing capacity failure.
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Determine the total active thrust, in kN/m, for a retaining wall (height 5.60 m) with horizontal backfill given the following properties: Unit weight = 17.42 kN/m3, angle of internal friction = 32 degrees, Cohesion = 11.76 kPa, Surcharge = 9.32 kPa.
45.) A retaining wall supports a horizontal backfill that is composed of two types of soil.
First layer: 5.91 meters high, Unit weight of 17.26 kN/m3, coefficient of active pressure of 0.291
Second layer: 5.36 meters high, Unit weight of 18.85 kN/m3, coefficient of active pressure of 0.301
Determine the distance of the total active force measured from the bottom of the wall. Round off to three decimal places.
A 10-m retaining wall is shown in figure A, determine:
a. The active thrust on the wall due to soil and water
b. The active thrust on the wall due to soil only [dry]
c. The increase in force on the wall if the soil is fully saturated with rainwater.
Chapter 17 Solutions
Principles of Foundation Engineering (MindTap Course List)
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- Use Eq. (12.3), Figure P12.2, and the following values to determine the at-rest lateral earth force per unit length of the wall. Also find the location of the resultant. H = 5 m, H1 = 2 m, H2 = 3 m, γ = 15.5 kN/m3, γsat = 18.5 kN/m3, Φ' = 34º, c' = 0, q = 20 kN/m2, and OCR = 1.arrow_forwardQ.9 A smooth retaining wall is 4 m high and supports a cohesive backfill with a unit weight of 17 kN/m3. The shear strength parameters of the soil are cohesion =10 kPa and Ø = 10°. Calculate the total active thrust acting against the wall and the depth to the point of zero lateral pressurearrow_forwardProblem: The cantilever retaining wall shown in the figure resists active lateral earth pressure throughout its length. 1. Calculate the total lateral force on the wall due to active pressure in KN2. Determine the overturning moment due to lateral earth pressure in KN-m.3. Determine the resisting overturning moment in KN-marrow_forward
- A smooth retaining wall with 2m of embedment in the clayey sand retains a 6m high sandy backfill as in Fig.2. Assuming that the entire soil mass on the right side of the wall is in the active state and the soil on the left is in the passive state. compute the active and passive thrusts on the wall and location of resultants. plot the diagram of active and passive earth pressure.arrow_forwardA frictionless retaining wall is shown in the figure below. Location of passive force from the base of the wall (m)arrow_forwardDetermine the active Rankine earth pressure (magnitude and location) against the 1-foot thick retaining wall in the figure at right.arrow_forward
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