T₁1 m6 m3 mAC30 kN/m²B0Y17.5 kN/m³2 mC[1m 1. For the braced-cut excavation shown in the figure below, y=17.5 kN/m³, c=30kN/m², and the center-to-center spacing of the struts is 5m.a) Draw the earth pressure envelope and determine the strut loads atlevels A, B, and C.b) Using σall =170 MN/m², determine the section modulus of the retainingwall required.

Calculating the stability number for the given soil:Hence the pressure diagram will be like that of…

Answered: T₁ 1 m 6 m 3 m A C 30 kN/m² B 0 Y 17.5…

Engineering

Civil Engineering

T₁ 1 m 6 m 3 m A C 30 kN/m² B 0 Y 17.5 kN/m³ 2 m C [1m

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter13: Lateral Earth Pressure: At-rest, Rankine, And Coulomb

Section: Chapter Questions

Problem 13.21P

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Question

T₁
1 m
6 m
3 m
A
C
30 kN/m²
B
0
Y
17.5 kN/m³
2 m
C
[1m

1. For the braced-cut excavation shown in the figure below, y=17.5 kN/m³, c=30
kN/m², and the center-to-center spacing of the struts is 5m.
a) Draw the earth pressure envelope and determine the strut loads at
levels A, B, and C.
b) Using σall =170 MN/m², determine the section modulus of the retaining
wall required.

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Step 1: given data

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Step 3: draw earth pressure

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Step 4: calculate section modulus

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