Answered: AP = 50 KPa 3 m Sand Ydry = = 16…

AP = 50 KPa 3 m Sand Ydry = = 16 KN/cu.m GROUND WATER TABLE Sand 6 m Ysat = 18.5 KN/cu.m Clay Ysat = 119 KN/cu.m 6 m e = 0.95 LL = 50

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Shear Strength Of Soil

Section: Chapter Questions

Problem 10.24CTP

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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

A soil profile is shown in the figure. A uniformly distributed load of 50 KPa is applied at the ground surface. Due to primary consolidation, A. Calculate the settlement of the clay layer if it is normally consolidated. B. Calculate the settlement of the clay layer if the pre-consolidation pressure (Pc) is 190 KPa. C. Calculate the settlement of the clay layer if the pre-consolidation pressure (Pc) is 170 KPa.

AP = 50 KPa
3 m
Sand
Ydry =
= 16 KN/cu.m
GROUND WATER TABLE
Sand
6 m
Ysat = 18.5 KN/cu.m
Clay
Ysat = 119 KN/cu.m
6 m
e = 0.95
LL = 50

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