Building Construction
While investigating the site, a thick layer of fairly firm clay over a deep layer of soft clay is encountered. In such a situation, the following type of foundation is useful:

Raft foundation
None of these
Pile formation
Grillage foundation

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Building Construction
In clay soil

All listed here
Consolidation continues even after several years of construction
Differential settlement is generally prevalent
Swelling and shrinkage characteristics prevail

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