Building Construction
Auger boring

Is the most primitive method for making a hole in the ground
All of these
Is generally employed in cohesive and other self soils above water table
Is most economical up-to a depth of 5 meters

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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
Excessive thermal variations in the backing or plaster causes the plaster to fall
Cracks appear on the plastered surface in the form of hair cracks

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