A retaining wall currently stands 6.3 m high, supporting a level backfill of dry granular material with a unit weight of 16.2 kN/m³. The horizontal active thrust exerted on the wall is estimated to be 75 kN per meter length of the wall. To allow for an increase in the wall's height without exceeding the existing thrust, a portion of the backfill extending from the top down to a depth of 2.8 m is excavated and replaced with a lighter material (e.g., cinder) that has a unit weight of 8.2 kN/m³.

A retaining wall currently stands 6.3 m high, supporting a level backfill of dry granular material with a unit weight of 16.2 kN/m³. The horizontal active thrust exerted on the wall is estimated to be 75 kN per meter length of the wall. To allow for an increase in the wall's height without exceeding the existing thrust, a portion of the backfill extending from the top down to a depth of 2.8 m is excavated and replaced with a lighter material (e.g., cinder) that has a unit weight of 8.2 kN/m³.

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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