SECTION P-905  VENT CONNECTIONS AND GRADES
P-905.1 Connection. Individual, branch and circuit vents shall connect to a vent stack, stack vent, air admittance valve or extend to the open air.
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P-905.6 Vent for future fixtures. Where the drainage piping has been roughed-in for future fixtures, a rough-in connection for a vent shall be installed. The vent size shall be not less than one-half the diameter of the rough-in drain to be served or a full-size vent when serving drainage piping as part of a single-stack vent system. The vent rough-in shall connect to the vent system, or shall be vented by other means as provided for in this Chapter. The connection shall be identified to indicate that it is a vent.
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