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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Building Construction
Which one of the following activities is not correct as applicable to brick corbels

The maximum projection of the corbel should not be more than the thickness of the wall
The maximum projection of each corbel course should be limited to a quarter brick at a time
The discontinuous corbels are used to carry heavy concentrated loads
Stretcher bond is generally used for the construction of brick corbel

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