Building Construction
The disease of dry rot in timber is caused by

Lack of ventilation
None of these
Complete submergence in water
Alternate wet and dry conditions

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Building Construction
Depth or height of the arch is the

Perpendicular distance between intrados and extrados
Perpendicular distance between springing line and extrados
None of these
Vertical distance between springing line and intrados

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

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
The discontinuous corbels are used to carry heavy concentrated loads

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