11.5 Following are the results of a laboratory consolidation test on a sample of undis-turbed clay obtained from the field.Pressure, o' (kg/cm?) Final helght of specimen (cm)2.5400.52.5191.02.52.02.4284.02.3228.02.20616.02.09© Cengage laeming 2014 The height of the specimen at the beginning of the test was 25.4 mm, and the diame-ter was 63.5 mm. The moist specimen weighed 140 g and the water content wasdetermined to be 19%. Estimate the compression index and the preconsolidationpressure from the e-log o' curve. Given: G, = 2.7.

Initial volume of sample V0=area of cylinder×height=π4×6.352×2.54=80.43 cm3volume of sample under…

5 Following are the results of a laboratory consolidation test on a sample of undis- turbed clay obtained from the field. Pressure, a' (kg/cm) Final helght of specimen (cm) 0.5 1.0 2.0 2.540 2.519 2.5 2.428 2.322 4.0 2.206 2.09 8.0 16.0 O Cengape laeming 2014

5 Following are the results of a laboratory consolidation test on a sample of undis- turbed clay obtained from the field. Pressure, a' (kg/cm) Final helght of specimen (cm) 0.5 1.0 2.0 2.540 2.519 2.5 2.428 2.322 4.0 2.206 2.09 8.0 16.0 O Cengape laeming 2014

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 11.3P

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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

11.5 Following are the results of a laboratory consolidation test on a sample of undis-
turbed clay obtained from the field.
Pressure, o' (kg/cm?) Final helght of specimen (cm)
2.540
0.5
2.519
1.0
2.5
2.0
2.428
4.0
2.322
8.0
2.206
16.0
2.09
© Cengage laeming 2014

The height of the specimen at the beginning of the test was 25.4 mm, and the diame-
ter was 63.5 mm. The moist specimen weighed 140 g and the water content was
determined to be 19%. Estimate the compression index and the preconsolidation
pressure from the e-log o' curve. Given: G, = 2.7.

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