Which one of the following activities is not correct as applicable to brick corbels A. The maximum projection of the corbel should not be more than the thickness of the wall B. The maximum projection of each corbel course should be limited to a quarter brick at a time C. The discontinuous corbels are used to carry heavy concentrated loads D. Stretcher bond is generally used for the construction of brick corbel

The correct answer is: D. Stretcher bond is generally used for the construction of brick corbel.

A corbel is a structural element that projects from a wall and supports a load. It is typically made of brick, stone, or concrete. The maximum projection of a corbel should not be more than the thickness of the wall, and the maximum projection of each corbel course should be limited to a quarter brick at a time. Discontinuous corbels are used to carry heavy concentrated loads. Stretcher bond is a type of brick masonry bond in which all the bricks are laid in a horizontal position. It is not a suitable bond for the construction of brick corbels, as it does not provide the necessary strength and stability.

Here is a diagram of a brick corbel:

[Diagram of a brick corbel]

The corbel is made up of a series of bricks that are laid in a stepped fashion. The bricks are held in place