According to regulations, how far must footers extend past the foundation for chimneys?

The requirement for footers to extend beyond the foundation for chimneys is critical to ensuring stability and proper load distribution. The correct extension, which is typically 6 inches, helps to prevent potential structural issues by providing additional support and mitigating the risk of settling or shifting that could occur if the chimney is not adequately supported.

This 6-inch extension also plays a role in drainage by directing water away from the foundation and reducing the risk of moisture accumulation, which might undermine both the chimney and the foundation. Proper footing is essential in areas with varying soil conditions or when additional loads are placed on the footing due to the weight of the chimney. Therefore, the specified extension is an important regulatory requirement tailored to maintain the integrity and safety of the structure over time.