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P-1105.2 Minimum Vent Size

Philadelphia Plumbing Code > 11 Vents and Venting > P-1105 Ventilation of Branch or Horizontal Pipes > P-1105.2 Minimum Vent Size
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Any single water closet or pedestal urinal branch more than 8 feet in length or any single waste branch for fixtures other than water closets or pedestal urinals more than 12 feet in length shall have a vent sized at least one-half the diameter of the branch pipe. Depending on its length, the number of fixture units connected shall be in accordance with Table P-1110.4.

Figure P-1105.2

SINGLE WASTE BRANCHES IN EXCESS OF 8' - 0" and 12'-0" VENTING REQUIREMENTS


Figure P-1105.2a



* Refer to Chapters 9 and 11 For Sizing

CIRCUIT and LOOP VENTING FOR WALL HUNG WATER CLOSETS and SMALL FIXTURES


Figure P-1105.2b

* Refer to Chapters 9 and 11 For Sizing

CIRCUIT and LOOP VENTING FOR FLOOR MOUNTED CLOSETS and SMALL FIXTURES ABOVE

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