A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure below. Calculate the degree of consolidation at Point A if the time factor Tv is equal to 0.2 (acceptable tolerance = 10%).

A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure below. Calculate the degree of consolidation at Point A if the time factor Tv is equal to 0.2 (acceptable tolerance = 10%).

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

Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.

Question

A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure below. Calculate the degree of consolidation at Point A if the time factor T_v is equal to 0.2 (acceptable tolerance = 10%).

WT
Clay:
Sand:
3 m
V
Ysat 19 kN/m³,
XA
Ysat
Ydry
=
= 17 kN/m³
Impermeable bedrock
V
Cc = 0.27,
CR = 0.08
18.6 kN/m³,
eo = 0.85
OCR =1
3.0 m
+
2.0 m
8.0 m

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