An exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and G= 2.68 as shown below. The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 6 ft above the top of sand layer xaWAQ the clay, determine the safe depth of excavation before the bottom heaves. X. If an open excavation is to be made in Exploratory drill hole 10 ft 6 ft 4.5 ft E Saturated clay D Sand

An exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and G= 2.68 as shown below. The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 6 ft above the top of sand layer xaWAQ the clay, determine the safe depth of excavation before the bottom heaves. X. If an open excavation is to be made in Exploratory drill hole 10 ft 6 ft 4.5 ft E Saturated clay D Sand

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 5.11P

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An exploratory drill hole was made in a stiff saturated clay having a moisture content of 38.9% and Gs = 2.34 as shown in the figure. The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 13.8 ft above the top of sand layer. If an open excavation is to be made in the clay, determine the (a) unit weight of the clay, and the (b) maximum cut before the bottom heaves.
An exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and Gs = 2.68 (Figure 9.27). The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 6 m above the top of the sand layer. If an open excavation is to be made in the clay, determine the safe depth of excavation before the bottom heaves.
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