Building (A) settled 10 cm in three years due to consolidation of the underlying clay layer and it is known that thefinal settlement will be about 30 cm Building (B) and its underlying clay layer are, as far as the available data confirm,very similar to (A) except that the underlying clay layer is 20% thicker than the clay layer below (A). Theavailable data also confirm that the increase in the average pressure at the middle of the two clay layers can beconsidered approximately alike. Estimate the final settlement of building (B) and also the settlement in three years.

Building (A) settled 10 cm in three years due to consolidation of the underlying clay layer and it is known that thefinal settlement will be about 30 cm Building (B) and its underlying clay layer are, as far as the available data confirm,very similar to (A) except that the underlying clay layer is 20% thicker than the clay layer below (A). Theavailable data also confirm that the increase in the average pressure at the middle of the two clay layers can beconsidered approximately alike. Estimate the final settlement of building (B) and also the settlement in three years.

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 11.4P

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For a normally consolidated clay layer in the field, the following values are given:Thickness of clay layer = 8.5 ftVoid ratio ?? = 0.8Compression index ?? = 0.28Average effective pressure on the clay layer ??′ = 2650 lb ft2 ⁄∆?′ = 970 lb ft2 ⁄Secondary compression index ?? = 0.02What is the total consolidation settlement of the clay layer five years after the completionof primary consolidation settlement? (Note: Time for completion of primary settlement= 1.5 years.)
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