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 17.3P
To determine
Find the factor of safety of the retaining wall for 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.
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.
Determine the total active thrust, in kN/m, for a retaining wall (height 5.12 m.) with horizontal backfill given the following properties: Unit weight = 17.79 kN/m3, Angle of internal friction = 30°, Cohesion = 11.71 kPa, and Surcharge = 9.33 kPa.
Chapter 17 Solutions
Principles of Foundation Engineering (MindTap Course List)
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- Determine the total active thrust, in kN/m, for a retaining wall (height 4.77 m.) with horizontal backfill given the following properties: Unit weight = 17.49 kN/m3, Angle of internal friction = 32°, Cohesion = 11.32 kPa, and Surcharge = 8.6 kPa. Round off to two decimal places.arrow_forward3) A retaining wall is illustrated IN THE Figure. Determine the Rankine active force, (Pa) per unit length of the wall and the location of the resultant. H = 9 m, H1 = 4 m, Υ1 = 16.5 kN/m3, Υ2 = 20.2 kN/m3, ø'1 = 30, ø'2 = 34, q= 21 kN/m2arrow_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_forward
- It is required to design a cantilever retaining wall to retain a 5.0 m high sandy backfill. The dimensions of the cantilever wall are shown in Figure 15.52 along with the soil properties. Check the stability with respect to sliding and overturning, based on the active earth pressures determined, usinga. Coulomb's earth pressure theory (δ' = 24°), andb. Rankine's earth pressure theory.The unit weight of concrete is 24 .0 kN/m3arrow_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_forwardPLEASE ANSWER ASAP A 6-m vertical unyielding retaining wall is supporting a cohesionless loose coarse-grained backfill having a unit weight of 16 kN/m3 and an angle of friction of 250. It carries a uniform surcharge of 15 kN/m3. Determine the total lateral force (in kN) per unit length of the wall.arrow_forward
- 3) A 5-m-high retaining wall is shown in Figure-2. Determine A) Rankine active force per unit length of the wall and the location of the resultant B) Rankine passive force per unit length of the wall and the location of the resultantarrow_forwardCalculate the factor of safety with respect to overturning and sliding of the gravity retaining wall. Use the Rankine active earth pressure in your calculation. check image for accurate data and for figurearrow_forward45.) 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.arrow_forward
- 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.arrow_forwardQ.1. Refer to the infinite slope shown in Figure 1. Given: β = 19 ͦ, ɣ = 20 kN/m3 , Ø = 33 ͦ, and c’ = 47 kN/m2 . Find the height, H, such that a factor of safety, Fs = 3.1 is maintained against sliding along the soil-rock interface. Also Determine the thrust on the wall if the water table rises to a level 2 m below the surface of the sand. The saturated unit weight of the sand is 20 kN/m3 .arrow_forwardConsider the smooth retaining wall shown in the figure below. Calculate the overturning moment at Point O in kN.m due to the surcharge only applied behind the wall. Assume that the surcharge is applied over a wide area. Consider a 1 m thickness in the out-of-plane directionarrow_forward
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