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Section 515 Mausoleum Relief Vent
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A pressure relief vent shall be provided for each crypt. Niches shall not require pressure relief systems.
The pressure relief vent pipe and fittings shall conform to one of the standards listed in Tables 515.2A and 515.2B.
CRYPT PRESSURE RELIEF PIPE
MATERIAL | STANDARD |
Acrylonitrile butadiene styrene (ABS) plastic pipe | ASTM D2661, ASTM F628CSA B181.1, |
Polylefin pipe | CSA CAN/CSA B181.3 |
Polyvinyl chloride (PVC) plastic pipe (Type DWV) | ASTM D2665, ASTM D2949, ASTM F891 |
For family mausoleum units where all crypts are bordering an exterior wall, pressure relief ventilation shall be provided from the crypt to the outside of the mausoleum through the exterior wall or roof. For all other mausoleum units, each crypt shall have a pressure relief vent from the crypt to the roof of the mausoleum. The minimum nominal pipe size shall be 1 inch (25 mm). The system shall have a minimum of one-eighth unit vertical to 12 units horizontal (1-percent slope). The piping shall not be trapped or installed to trap water or condensate.
Except for family mausoleum units where all crypts are bordering an exterior wall, crypt pressure relief system shall extend through the roof and terminate at least 6 inches (152 mm) above the roof and at least 10 feet (3048 mm) from any openable opening, air intake or property line. The termination of the relief system pipe shall be done by a roof and vent cap compatible with the relief pressure pipe. The roof and vent cap shall be waterproof. For family mausoleum units where all crypts are bordering an exterior wall, pressure relief ventilation shall be provided from the crypt to the outside of the mausoleum through the exterior wall or roof.
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2020 FBC - Mechanical, 7th edition > 5 Exhaust Systems > 515 Mausoleum Relief Vent > 515.4 Termination
515.1 Exhaust Systems, General
A pressure relief vent shall be provided for each crypt. Niches shall not require pressure relief systems ...