Building Construction
The depth of concrete bed of the foundation depends upon

All listed here
The upward soil pressure
The projection of the concrete block beyond the footing over it
The mix of the concrete

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Building Construction
Pick up the correct statements from the following:

All listed here
In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
Cracks appear on the plastered surface in the form of hair cracks
Excessive thermal variations in the backing or plaster causes the plaster to fall

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