Building Construction
In a colar beam roof

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
There are two horizontal ties, one at the feet and other at the middle of the rafters

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Building Construction
For constructing a terrazzo floor, Pick up the incorrect statement from the following:

After final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Glass strips are driven into the layer according to the pattern required
A 32 mm thick layer of cement concrete (1 : 2 : 4) is laid on the base course and the surface is made smooth by trowelling
A base course is prepared as in cement concrete flooring

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