A rigid smooth retaining wall of height 7 m with vertical back face retains saturated clay as backfill. The saturated unit weight and undrained cohesion of the backfill are 17.2 kN/m² and 20 kPa respectively. The difference in the active lateral forces on the wall (in kN per m length of wall) up to two decimal places, before and after the occurrence of tension cracks is

A rigid smooth retaining wall of height 7 m with vertical back face retains saturated clay as backfill. The saturated unit weight and undrained cohesion of the backfill are 17.2 kN/m² and 20 kPa respectively. The difference in the active lateral forces on the wall (in kN per m length of wall) up to two decimal places, before and after the occurrence of tension cracks is

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 14.11P

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A 4m high vertical wall supports, a saturated cohesive soil (du= 0) with horizontal surface. The top 2.5 m of the backfill has bulk density 17.6 kN/m³ and apparent cohesion of 15 kN/m². The bulk density and apparent cohesion of the bottom 1.5 m is 19.2 kN/m² and 20 kN/m² respectively. If tension cracks develop, what would be the total active pressure on the wall?Also draw the pressure distribution diagram.
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