gas app vent

What does this mean? Could i get a drawing on this please!!

Gas vents that are greater than 12 inches in size or that are located less than 8 feet from a vertical wall or similar structure should terminate at least 2 feet above the highest point where they pass through the roof, and not less than 2 feet above any portion of a dwelling within 10 feet horizontally.

I believe this is what you are looking for.



nice graphic