A gravity retaining wall of top width 1 m and base width 3 m and total height of 10 m is retaining dry cohesionless backfill of unit weight of 20 kN/m³ and angle of shearing resistance 30°. Then factor of safety against sliding will be 3 (y s 22 kN/m³) soil

A gravity retaining wall of top width 1 m and base width 3 m and total height of 10 m is retaining dry cohesionless backfill of unit weight of 20 kN/m³ and angle of shearing resistance 30°. Then factor of safety against sliding will be 3 (y s 22 kN/m³) soil

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter15: Retaining Walls, Braced Cuts, And Sheet Pile Walls

Section: Chapter Questions

Problem 15.2P

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Question

. A gravity retaining wall of top width 1 m and base
width 3 m and total height of 10 m is retaining dry
cohesionless backfill of unit weight of 20 kN/m³
and angle of shearing resistance 30°. Then factor
of safety against sliding will be
(Y soil
= 22 kN/m³)

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Problem 10 The backfill and foundation sand have unit weight of y = 135 pcf and Ø = 38. The backfill has a slope of 17 degrees and resultant force Ra acts parallel to the backfill slope as shown below. The friction angle between the base of the wall and the foundation sand is 8-2/30. The factor of safety against sliding and overturning, respectively, are most nearly (neglect passive pressure): W=5,531 lb/ft 17° Ra=2576 lb/ft 9.0 12.0' 17 5.54 2.5 1.5 A. 1.1 and 2.8 B. 1.3 and 3.8 C. 1.3 and 2.8 1.1 and 3.8 ABCD 5.0 1.5 4.0
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