What is the maximum corbeling depth allowed for a chimney?

The maximum corbeling depth allowed for a chimney is one-half of the chimney thickness. This standard is important for ensuring the structural integrity and stability of the chimney. Corbeling is a technique used to support a structure, where bricks or stones are projected out from the wall, creating a tiered effect. If the corbeling depth exceeds half the thickness of the chimney, it can compromise the chimney's load-bearing capacity and lead to potential structural failure or instability.

Adhering to this guideline helps architects and builders design safer chimneys that effectively withstand environmental loads and stresses. Each choice outlines a varying degree of corbeling depth, but only maintaining a depth of half the chimney thickness ensures that the chimney functions properly without risking structural integrity. This balance is vital for fire safety and the overall durability of both the chimney and the structure it serves.