// CODE SNIPPET
P-904.5.1 Main House Drain
JUMP TO FULL CODE CHAPTER
The minimum size of the main house drain receiving the discharge of water closets
shall be 4 inches inside nominal diameter.
Related Code Sections
P-904.5.1 Soil and Waste Piping, Main House Drain
The minimum size of the main house drain receiving the discharge of water closets
shall be 4 inches inside nominal diameter ...
Philadelphia Plumbing Code > 9 Soil and Waste Piping > P-904 Sizes > P-904.5 Minimum Size of Soil and Waste Pipe > P-904.5.1 Main House Drain
P-919.2.12 Vents, Building Drain/Building Sewer
The minimum
size of the main house drain receiving the discharge
of water closets shall be 4 inches (102 mm) inside nominal
diameter ...
Plumbing Code 2018 of Philadelphia > 9 Vents > P-919 Philadelphia Single-Stack Waste and Vent System > P-919.2 Drainage System Sizing > P-919.2.12 Building Drain/Building Sewer
P-1401.2 Individual Subsurface Sewage Disposal Systems, House Trap
A house trap will not be required where the main sanitary house drain is connected to an
individual on-site subsurface sewage disposal system ...
Philadelphia Plumbing Code > 14 Individual Subsurface Sewage Disposal Systems > P-1401 General > P-1401.2 House Trap
P-1002.6.3 Traps, Interceptors and Separators, Relief Vent
A relief vent shall be installed on
the building (house) drain before the main building
(house) trap inside the building and be connected ...
Plumbing Code 2018 of Philadelphia > 10 Traps, Interceptors and Separators > 1002 Trap Requirements > P-1002.6 Building (House) Traps and Fresh Air Inlets > P-1002.6.3 Relief Vent
P-901.2.2 Vents, Relief Vent
A relief vent pipe shall be installed
on the building (house) drain before the main building
(house) trap inside the building and be connected ...
Plumbing Code 2018 of Philadelphia > 9 Vents > 901 General > 901.2 Trap Seal Protection > P-901.2.2 Relief Vent