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Question 35.2: This example explores a caisson design in multiple clay laye...

This example explores a caisson design in multiple clay layers. Find the allowable capacity of a 1.5 m diameter caisson placed at 15 m below the surface. The top layer was found to be clay with a cohesion of 60 kPa and the bottom layer was found to have a cohesion of 75 kPa. The top clay layer has a thickness of 5 m. The caisson was constructed using drilling mud where it is not certain that the filter cake will be removed during concreting. The density of soil is 17 kN/m³ for both layers and the groundwater level is 2 m below the surface. See Fig. 35.5.

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