Plastic piping and fittings shall not be used.
Exceptions:
1. Plastic piping and fittings may be used in residential buildings five stories or less in height.
2. Corrugated polyethylene piping and fittings, with a diameter of 12 inches (305 mm) or more may be used in connection with any type of building for underground yard drainage and storm water piping when used outside of the foundation wall of the building and not connecting to any piping system from the interior of the building.
Exceptions:
1. Plastic piping and fittings may be used in residential buildings five stories or less in height.
2. Corrugated polyethylene piping and fittings, with a diameter of 12 inches (305 mm) or more may be used in connection with any type of building for underground yard drainage and storm water piping when used outside of the foundation wall of the building and not connecting to any piping system from the interior of the building.