A 2.5m thick clay is to support a footing as shown below. Assume that the pressure increase Ao' is averaged at the middle of the clay layer. Determine the consolidation settlement using 1. Boussinesq equation 2. 1:2 Method

A 2.5m thick clay is to support a footing as shown below. Assume that the pressure increase Ao' is averaged at the middle of the clay layer. Determine the consolidation settlement using 1. Boussinesq equation 2. 1:2 Method

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter11: Ground Improvement

Section: Chapter Questions

Problem 11.10CTP

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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

1.0m
1.5m
2.5m
Water Level
Sand Layer
Y'=8.2 kN/m²
Δσ - 60 kPa
OC-Clay
Ysat 18.81 kN/m²
c=18 kPa
e =0.68
LL=38
0 = 30 kPa
Cs=0.125Cc

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