a) As a geotechnical engineer, explain why construction of foundations and other loads (structures) leads to a compression of soil layers. b) During the construction of a retaining wall, it was noticed that the wall does not yield toward the backfill or away from the backfill. Explain this phenomenon. Sketch a diagram to explain your answer. c) Let us consider the retaining wall shown in Figure below. The height of the wall is 9.75 m, and the unit weight of the sand backfill is 18.7 kN/m³. Using Coulomb's equation, calculate the active force, Pa, on the wall for angle of wall friction 8'=14°. Also, comment on the direction and location of the resultant.

a) As a geotechnical engineer, explain why construction of foundations and other loads (structures) leads to a compression of soil layers. b) During the construction of a retaining wall, it was noticed that the wall does not yield toward the backfill or away from the backfill. Explain this phenomenon. Sketch a diagram to explain your answer. c) Let us consider the retaining wall shown in Figure below. The height of the wall is 9.75 m, and the unit weight of the sand backfill is 18.7 kN/m³. Using Coulomb's equation, calculate the active force, Pa, on the wall for angle of wall friction 8'=14°. Also, comment on the direction and location of the resultant.

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

a) As a geotechnical engineer, explain why construction of foundations and
other loads (structures) leads to a compression of soil layers.
b) During the construction of a retaining wall, it was noticed that the wall does
not yield toward the backfill or away from the backfill. Explain this
phenomenon. Sketch a diagram to explain your answer.
c) Let us consider the retaining wall shown in Figure below. The height of the
wall is 9.75 m, and the unit weight of the sand backfill is 18.7 kN/m³. Using
Coulomb's equation, calculate the active force, Pa, on the wall for angle
of wall friction 8'-14°. Also, comment on the direction and location of the
resultant.
Sand
y = 18.7 kN/m³
0 = 10°
c' = 0
H= 9.75 m
6' = 34°
0 = 12°
8' (wall friction)

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