What is the minimum height that the vertical termination of mechanical draft systems must be above walkways?

The minimum height that the vertical termination of mechanical draft systems must be above walkways is established to ensure safety and accessibility. By requiring the termination to be at least 7 feet above ground level, this regulation minimizes the risk of individuals walking beneath the exhaust point being exposed to potentially harmful gases or other emissions that may escape from the system. This height also helps to prevent any obstruction to passages, ensuring that the pathway remains clear for movement and maintenance activities.

Regulatory bodies prioritize safety in standards for HVAC systems to protect workers and the general public. By adhering to this minimum height, it reduces the likelihood of unintentional contact with the exhaust and ensures compliance with local codes and regulations, which are designed to maintain a safe environment in areas where mechanical draft systems are used.