Massachusetts Vent Pipe Roof Height

Single wall metal pipe shall extend at least 2 feet 610 mm above the highest point where it passes through a roof of a building and at least 2 feet 610 mm higher than any portion of a building within a horizontal distance of 10 feet 3048 mm.

Massachusetts vent pipe roof height.

Vent terminals shall extend to the outer air above the roof line and be installed to prohibit the possibility of vent obstruction and the return of sewage gases into the building. I am sure the plumber put it at that height for the inspector. The vent is supposed to be 10 away or 2 above any window. You must also consider the snow line so the pipe does not get covered.

Your home s plumbing system is designed to efficiently remove water and waste. You should be able to cut that vent shorter but stay above the roof line. The 1992 vent sizing tables require that all type b gas vents terminate above the roof with a listed cap or listed roof assembly in accordance with the manufacturer s instructions. 12 plumbing systems must be tested.

Open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof or 6 inches 152 mm above the anticipated snow accumulation whichever is greater except that where a roof is to be used for any purpose other than weather protection the vent extension shall be run at least 7 feet 2134 mm above the roof. The vent stack is the pipe leading to the main roof vent. The plumbing system must be. But it is on the edge of the roof so that should not be a problem.

Its drainage and vent functions are actually two systems. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. 11 need for venting in the plumbing system. All open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof and not less than 2 inches 51 mm above the invert of the emergency overflow except that where a roof is to be used for any purpose other than weather protection the vent extensions shall be run at least 7 feet 2134 mm above the roof.

Proper height for vent pipes i live in northern canada where we get up to 3 4 ft of snow on our roof on a regular basis all winter. Open vent pipes that extend through a roof shall be terminated not less than 6 inches 152 mm above the roof. Where a roof is to be used for assembly or as a promenade observation deck sunbathing deck or similar purposes open vent pipes shall terminate not less than 7 feet 2134 mm above the roof. That means that when there is mechanical equipment on the roof sun decks you name it the plumbing vents need to extend up above the roof 7 feet.