Problem 1 A 4.5 m high retaining wall is supporting a horizontal backfill having a unit weight of 15.7 kN/m³ and a saturated unit weight of 19.3 kN/m³. Ground - water table is located 3 m below the ground surface. Drained friction angle for the backfill is 30°. The wall is restrained from yielding. The soil has an overconsolidated ratio of 2. a) Compute for the total force per unit length of wall for at rest condition. b) Compute for the location of the resultant force. c) Compute the moment at the base due to this force. d) If a surcharge of intensity 50 kPa is present on the ground surface, determine the total force per unit length of wall, still for at rest condition. q =50 kPa ground surface Y = 15.7 kN/m3 3m ▼ GWT 1.5m Ysat = 19.3 kN/m3

Problem 1 A 4.5 m high retaining wall is supporting a horizontal backfill having a unit weight of 15.7 kN/m³ and a saturated unit weight of 19.3 kN/m³. Ground - water table is located 3 m below the ground surface. Drained friction angle for the backfill is 30°. The wall is restrained from yielding. The soil has an overconsolidated ratio of 2. a) Compute for the total force per unit length of wall for at rest condition. b) Compute for the location of the resultant force. c) Compute the moment at the base due to this force. d) If a surcharge of intensity 50 kPa is present on the ground surface, determine the total force per unit length of wall, still for at rest condition. q =50 kPa ground surface Y = 15.7 kN/m3 3m ▼ GWT 1.5m Ysat = 19.3 kN/m3

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Problem 1
A 4.5 m high retaining wall is supporting a horizontal backfill having a unit
weight of 15.7 kN/m³ and a saturated unit weight of 19.3 kN/m³. Ground –
water table is located 3 m below the ground surface. Drained friction
angle for the backfill is 30°. The wall is restrained from yielding. The soil
has an overconsolidated ratio of 2.
a) Compute for the total force per unit length of wall for at rest
condition.
b) Compute for the location of the resultant force.
c) Compute the moment at the base due to this force.
d) If a surcharge of intensity 50 kPa is present on the ground surface,
determine the total force per unit length of wall, still for at rest condition.
q =50 kPa
ground
surface
Y = 15.7 kN/m3
3m
GWT
1.5m
Ysat = 19.3 kN/m3

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