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
Grillage foundation
Pile formation
None of these

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Building Construction
In a colar beam roof

There are two horizontal ties, one at the feet and other at the middle of the rafters
There is a horizontal tie at the feet of rafters only
There is a horizontal tie at almost the middle of rafters only
There is no horizontal tie beam

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