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

Solution (By Examveda Team)

The correct answer is C: The discontinuous corbels are used to carry heavy concentrated loads
Here's why:
A: The maximum projection of the corbel should not be more than the thickness of the wall - This statement is correct. A corbel that projects too far beyond the wall's thickness would be unstable.
B: The maximum projection of each corbel course should be limited to a quarter brick at a time - This statement is also correct. Limiting the projection per course ensures a gradual and stable build-up of the corbel. This prevents excessive stress on the lower courses.
C: The discontinuous corbels are used to carry heavy concentrated loads - This statement is incorrect. Discontinuous corbels are not suitable for heavy concentrated loads. They are weaker and more likely to fail under such stress. Continuous corbels, or other structural solutions, are required for heavy loads.
D: Stretcher bond is generally used for the construction of brick corbel - This statement is correct. Stretcher bond, where bricks are laid lengthwise, is a common and structurally sound pattern for corbel construction.