Building Construction
Negative skin friction

Both (A) and (B)
Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile
Neither (A) not (B)
Develops due to lowering of ground water

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

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

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