in the past. Take unit weight of water, yw = 9.81kN/m3.Ground levelSand5 my = 17.5 kN/mPresent GWT15 mYeat = 18.5 kN/mClayYaat = 17 kN/m8 m%3DThe overconsolidation ratio (OCR) (round off totwo decimal places) at the mid point of the claylayer is The soil profile at a construction site is shown inthe figure (not to scale). Ground water table (GWT)is at 5 m below the ground level at present. Anold well data shows that the ground watertable was as low as 10 m below the ground level

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Answered: The overconsolidation ratio (OCR)…

Engineering

Civil Engineering

The overconsolidation ratio (OCR) (round off to two decimal places) at the mid point of the clay layer is

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 5.13P

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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

in the past. Take unit weight of water, yw = 9.81
kN/m3.
Ground level
Sand
5 m
y = 17.5 kN/m
Present GWT
15 m
Yeat = 18.5 kN/m
Clay
Yaat = 17 kN/m
8 m
%3D
The overconsolidation ratio (OCR) (round off to
two decimal places) at the mid point of the clay
layer is

Transcribed Image Text:The soil profile at a construction site is shown in the figure (not to scale). Ground water table (GWT) is at 5 m below the ground level at present. An old well data shows that the ground water table was as low as 10 m below the ground level

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