Building Construction
The type of footing which is used to transmit heavy loads through steel columns is

Raft foundation
Isolated footing
Grillage foundation
Well foundation

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Building Construction
In a colar beam roof

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

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