An unsupported slope of height 15 m is shown in the figure (not to scale), in which the slope face makes an angle 50° with the horizontal. The slope material comprises purely cohesive soil having undrained cohesion 75 kPa. A trial slip circle KLM with a radius 25 m, passes through the crest and toe of the slope and it subtends an angle 60° at its centre O. The weight of the active soil mass (W, bounded by KLMN) is 2500 kN/m, which is acting at a horizontal distance of 10 m from toe of the slope. Consider the water table to be present at a very large depth from the ground surface. 60° 50° 10 m 25 m W 15 m- Considering the trial slip circle KLM, the factor of safety against the failure of slope under undrained condition (round off to two decimal places) is

An unsupported slope of height 15 m is shown in the figure (not to scale), in which the slope face makes an angle 50° with the horizontal. The slope material comprises purely cohesive soil having undrained cohesion 75 kPa. A trial slip circle KLM with a radius 25 m, passes through the crest and toe of the slope and it subtends an angle 60° at its centre O. The weight of the active soil mass (W, bounded by KLMN) is 2500 kN/m, which is acting at a horizontal distance of 10 m from toe of the slope. Consider the water table to be present at a very large depth from the ground surface. 60° 50° 10 m 25 m W 15 m- Considering the trial slip circle KLM, the factor of safety against the failure of slope under undrained condition (round off to two decimal places) is

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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Question

An unsupported slope of height 15 m is shown in the figure (not to scale), in which
the slope face makes an angle 50° with the horizontal. The slope material comprises
purely cohesive soil having undrained cohesion 75 kPa. A trial slip circle KLM with a
radius 25 m, passes through the crest and toe of the slope and it subtends an angle
60° at its centre O. The weight of the active soil mass (W, bounded by KLMN) is 2500
kN/m, which is acting at a horizontal distance of 10 m from toe of the slope. Consider
the water table to be present at a very large depth from the ground surface.
K
60°
F
50⁰
10 m
25 m
W
L
M
700
15 m-
Considering the trial slip circle KLM, the factor of safety against the failure of slope under
undrained condition (round off to two decimal places) is

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