Building Construction
The term string is used for

A sloping member which supports the steps in a stair
A vertical member between two treads
The underside of a stair
Outer projecting edge of a tread

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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 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
Stretcher bond is generally used for the construction of brick corbel

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