What is the minimum height for exit terminals of mechanical draft systems when adjacent to public walkways?

The minimum height for exit terminals of mechanical draft systems adjacent to public walkways is established for the safety of pedestrian areas. This height is set to prevent the risk of potential contact with exhaust gases that may be emitted from these systems. When considering the dynamics of airflow and the need to minimize exposure to hazardous substances, achieving a minimum clearance of 7 feet ensures that the exhaust does not interfere with passersby.

This standard also takes into account the average height of individuals as well as the potential for larger equipment or obstructions nearby. Adhering to this regulation helps to maintain public safety and regulatory compliance, as it minimizes risks associated with inhalation of harmful fumes and protects pedestrians from accidental contact with the exhaust outlet.

Standards may vary across different local jurisdictions, but the 7-foot requirement effectively balances safety and practical usage, ensuring that systems remain efficient while promoting a safe public environment.