Problem 2. Determine the average (top, middle, and bottom) stress increase in the clay layerbelow the center of foundation due to foundation load of 50 tons.50 ton (net load)Sand100 Ib/4:5 tGroupdwatertable5 ft X 5 ft*Sand122 lb/ft3 ftA120 Ib/ft0.7C, = 0.2510 ft0,06Preconsolidation pressure = 2000 lb/ft?

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Answered: Problem 2. Determine the average (top,…

Problem 2. Determine the average (top, middle, and bottom) stress increase in the clay layer below the center of foundation due to foundation load of 50 tons.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Settlement Of Shallow Foundations

Section: Chapter Questions

Problem 9.7P

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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

Problem 2. Determine the average (top, middle, and bottom) stress increase in the clay layer
below the center of foundation due to foundation load of 50 tons.
50 ton (net load)
Sand
100 Ib/
4:5 t
Groupdwater
table
5 ft X 5 ft
*Sand
122 lb/ft
3 ft
A120 Ib/ft
0.7
C, = 0.25
10 ft
0,06
Preconsolidation pressure = 2000 lb/ft?

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