Building Construction
For providing a raft foundation, the following activities are involved1.Ramming the foundation bed2.Excavation of the soil upto required depth3.Laying the reinforcement over the foundation bed4.Curing the cement concrete placed over reinforcement5.Pouring the cement concrete over the reinforcementThe correct sequence is

3, 2, 5, 1, 4
1, 2, 3, 4, 5
5, 4, 3, 2, 1
2, 1, 3, 5, 4

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Building Construction
In a colar beam roof

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

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