a) Before the construction of the embankment. b) Immediately after the construction of the embankment. c) When ground water table lies at surface of ground level and below the foundation and discuss the change in the stresses values if any.

a) Before the construction of the embankment. b) Immediately after the construction of the embankment. c) When ground water table lies at surface of ground level and below the foundation and discuss the change in the stresses values if any.

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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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

2.1.Q.1: Determine the total vertical stress, pore water pressure, and the effective stress of
the soil mass at the Centre of the clay layer and at the Centre of the sand layer for the
conditions stated below when an embankment is to be constructed from a fill on ground
surface. For more details, please find excel sheet
Note: Clay layer follows sand layer
a) Before the construction of the embankment.
b) Immediately after the construction of the embankment.
c) When ground water table lies at surface of ground level and below the foundation
and discuss the change in the stresses values if any.
Given data:
Depth of Clay layer= 5
Depth of Sand layer= 5
Saturated unit weight of clay kN/m³ = 17
Saturated unit weight of sand kN/m³ = 18
Height of Embankment= 4
Unit weight of Embankment kN/m³= 17

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