The factor of safety of an infinite soil slope shownin the figure having the properties c = 0, o = 35°,%|Ydry = 16 kN/m3 and Ysat = 20 kN/m3 isapproximately equal to30°8 m10 m

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The factor of safety of an infinite soil slope shown in the figure having the properties c = 0, o = 35°, %3D %3D Ydry = 16 kN/m3 and Ysat = 20 kN/m3 is approximately equal to 30° 8 m 10 m

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter15: Slope Stability

Section: Chapter Questions

Problem 15.30P

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Question

The factor of safety of an infinite soil slope shown
in the figure having the properties c = 0, o = 35°,
%|
Ydry = 16 kN/m3 and Ysat = 20 kN/m3 is
approximately equal to
30°
8 m
10 m

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A long slope is made up of a cohesionless soil with the internal friction angle of 34°. If the water table rises to the surface of the slope, then determine the maximum possible value of the slope angle to get a factor of safety of 1.5. Take saturated unit weight as 18 kN/m3 and the unit weight of water as 10 kN/m3.
A cut slope was excavated in saturated clays as shown in the figure. The soil has a unit weight of 17 kN/m³ and an undrained shear strength cᵤ = 20 kPa. The slope make an angle of 60° with the horizontal. Assume stability number m = 0.185. Slope failure occurs along the plane AC with BC = 8 m. Which of the following most nearly gives the stability factor?
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Q.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.
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