You are working for a consulting firm that has been asked to evaluate the factor of safety ofthe wall shown in the figure supported by a well-degraded sand. The resultant load behindthe concrete wall acts at the one third point.Dw1m1.5 m24 kN/m³y = 20 kN/m³26.5 kN/m24°= 34° n = 0.43 m(a) Determine the factor of safety if Dw − D > 1.5B. Ignore the lateral passive resistancedue to the soil in front of the wall.(b) Determine the factor of safety if the ground water table rises to 0.5 m below the base ofthe wall. Discuss the significance of your observations.

Answer We need to find factor of safety of the given wall with reference to Overturning, Sliding…

You are working for a consulting firm that has been asked to evaluate the factor of safety of the wall shown in the figure supported by a well-degraded sand. The resultant load behind the concrete wall acts at the one third point. Dw + 1m 1.5 m 24 kN/m³ Y = 20 kN/m³ 26.5 kN/m E 24⁰ 3 = 34° n = 0.4 (a) Determine the factor of safety if Dw − D > 1.5B. Ignore the lateral passive resistance due to the soil in front of the wall. (b) Determine the factor of safety if the ground water table rises to 0.5 m below the base of the wall. Discuss the significance of your observations.

You are working for a consulting firm that has been asked to evaluate the factor of safety of the wall shown in the figure supported by a well-degraded sand. The resultant load behind the concrete wall acts at the one third point. Dw + 1m 1.5 m 24 kN/m³ Y = 20 kN/m³ 26.5 kN/m E 24⁰ 3 = 34° n = 0.4 (a) Determine the factor of safety if Dw − D > 1.5B. Ignore the lateral passive resistance due to the soil in front of the wall. (b) Determine the factor of safety if the ground water table rises to 0.5 m below the base of the wall. Discuss the significance of your observations.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

You are working for a consulting firm that has been asked to evaluate the factor of safety of
the wall shown in the figure supported by a well-degraded sand. The resultant load behind
the concrete wall acts at the one third point.
Dw
1m
1.5 m
24 kN/m³
y = 20 kN/m³
26.5 kN/m
24°
= 34° n = 0.4
3 m
(a) Determine the factor of safety if Dw − D > 1.5B. Ignore the lateral passive resistance
due to the soil in front of the wall.
(b) Determine the factor of safety if the ground water table rises to 0.5 m below the base of
the wall. Discuss the significance of your observations.

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