he Casagrande cup device. Determine the liquid limit of the clay. Deter- | mine also the liquidity index if the in-situ water content is 38 % and the plastic index. What type of failure would you expect from the soil, justify with the value of LI.

he Casagrande cup device. Determine the liquid limit of the clay. Deter- | mine also the liquidity index if the in-situ water content is 38 % and the plastic index. What type of failure would you expect from the soil, justify with the value of LI.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.4P

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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

3. The following results were obtained from a liquid limit test on a clay using the Casagrande cup device. Determine the liquid limit of the clay. Deter-
mine also the liquidity index if the in-situ water content is 38 % and the
plastic index. What type of failure would you expect from the soil, justify
with the value of LI.
Number of blows
6
12
20
28
32
Water Content
52.5
47.1
43.2
38.6
37.0

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