A 6-m-high retaining wall is to support a soil with unit weight y=17 kN/m², soil friction angle +²=24°, and cohesion c'=12 kN/m². Determine 1) the depth of tensile crack behind the wall, and 2) the depth of excavation behind the wall that requires no support (zero total lateral stress).

A 6-m-high retaining wall is to support a soil with unit weight y=17 kN/m², soil friction angle +²=24°, and cohesion c'=12 kN/m². Determine 1) the depth of tensile crack behind the wall, and 2) the depth of excavation behind the wall that requires no support (zero total lateral stress).

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter14: Lateral Earth Pressure

Section: Chapter Questions

Problem 14.6P

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Question

Only solve 1.2

A 6-m-high retaining wall is to support a soil with unit weight y=17 kN/m³, soil friction angle +²=24°, and
cohesion c'=12 kN/m². Determine 1) the depth of tensile crack behind the wall, and 2) the depth of
excavation behind the wall that requires no support (zero total lateral stress).

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Step 2: 1. Determine the depth of tensile crack

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Step 3: Determine the depth of excavation that not required any support

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