What is the developed lenght and a VENT STACK should be no less then 4" passing through the roof full size to prevent hoarfrost
No
Normally 11/2" DEPENDING on developed length of piping and fittings
at least 1.25 in.
The minimum distance is 15 inches from the center of the closet shoe or toilet to the edge of the lav or vanity.
Supported minimum size
Depends on the size of the vent and what city you're performing the work in. Speak with a plumbing inspector for that city and tell him the size vent and he will tell you the maximum length. To determine the size of a vent you have to know developed length of pipe and fittings and the fixture units connected
Yes. How depends on the governing code. You'll need to know how many fixture units you are serving (lavatory=1, sink=2, toilet =3 or 4, shower =2, bidet=1, dishwash=2, clothes wash = 2), what size pipe you are venting and what size vent pipe you are using. Internationallly there may be no percentage limit on horizontal vs total vent length, but within the U.S., look for a percent limitation. For example, Illinois limits horizontal vent to 20% of the total run (referred to as developed length). You should be able to find the applicable table in the local State plumbing code at your local library.
Minimum size is 36
The boy's lavatory had three urinals and two toilet stalls.The girl's lavatory had five toilet stalls, but girls do not use urinals.A pipe burst, flooding the lavatory floor with hot water.
By connecting it to existing vent piping and increasing the size to at least 4"
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