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
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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.
Transcribed Image Text: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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