What is the minimum clearance required by code for a single-wall metal flue pipe from combustible materials?

The minimum clearance required by code for a single-wall metal flue pipe from combustible materials is typically 6 inches. This regulation is enforced to prevent the risk of fire, as single-wall flue pipes can reach high temperatures when in operation. Maintaining a clearance of 6 inches allows for adequate air circulation around the flue, reducing the potential for heat buildup and subsequent ignition of nearby combustibles. Proper adherence to these codes is crucial for safety and compliance in plumbing and HVAC installations. Understanding these requirements is essential for professionals in the plumbing trade to ensure installations are both safe and legally compliant.