The minimum height above finish ground level for an exit terminal adjacent to public walkways in a mechanical draft system is at least how many feet?

The minimum height above finish ground level for an exit terminal adjacent to public walkways in a mechanical draft system is at least how many feet?

• A. 6 feet
• B. 7 feet
• C. 8 feet
• D. 9 feet

Answer: (B)

The height requirement is about giving pedestrians a safe, unobstructed path and keeping the exhaust discharge out of eye level and reach. For an exit terminal located next to public walkways, the minimum height above finished grade is seven feet. This keeps the exhaust plume well above most people's heads and away from direct contact, reducing the chance of nuisance odors, heat, or drafts affecting anyone passing by. Heights lower than seven feet would be too close to pedestrians and could create safety or comfort issues, while higher heights would still work but aren’t the minimum required by the code.

The height requirement is about giving pedestrians a safe, unobstructed path and keeping the exhaust discharge out of eye level and reach. For an exit terminal located next to public walkways, the minimum height above finished grade is seven feet. This keeps the exhaust plume well above most people's heads and away from direct contact, reducing the chance of nuisance odors, heat, or drafts affecting anyone passing by. Heights lower than seven feet would be too close to pedestrians and could create safety or comfort issues, while higher heights would still work but aren’t the minimum required by the code.