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10-02-2012, 12:31 AM   #1
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## ABS maximum distance and angles?

We want to build a bathroom on the other side of the house. Is there a maximum distance that a 4" ABS pipe can be extended? The task will involve two 90 degree right angles. Is that too many angles?

10-02-2012, 12:39 AM   #2
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Quote:
 Originally Posted by jackwashere We want to build a bathroom on the other side of the house. Is there a maximum distance that a 4" ABS pipe can be extended? The task will involve two 90 degree right angles. Is that too many angles?
if you run out of fall 1/4" per ft rise its too far...picture would help

 10-02-2012, 12:39 PM #3 Member   Join Date: Mar 2011 Location: Ohio Posts: 1,646 Rewards Points: 1,000 in most places 3 and 4 inch pipe can run at 1/8 inch per foot pitch. use 45 degree bends to make your turns. for a bathroom you only need 3 inch pipe.
10-02-2012, 02:42 PM   #4
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Quote:
 Originally Posted by ben's plumbing if you run out of fall 1/4" per ft rise its too far...
I read on the internet that for 4" ABS pipe 1/8" per foot is standard. Between the start/finish there is approx. 2 feet height difference.

The distance is approx. 50-60 feet total, with two 90 degree turns. That's about 10 feet - 90 degree turn - 30 feet - 90 degree turn - 10 feet.

 10-02-2012, 03:59 PM #5 Member   Join Date: Mar 2011 Location: Ohio Posts: 1,646 Rewards Points: 1,000 at 1/8 inch per foot you would need 7.5 inches in 60 feet. use a 45 and a street 45 to make the 90 degree turns, if you have the room you can put a short piece of pipe between regular 45's. if any are outside corners use a wye and a street 45 and put a clean out in the end of the wye. put a clean out at the end of the run. is this in a crawl or a basement. Last edited by DannyT; 10-02-2012 at 04:06 PM.
10-02-2012, 06:22 PM   #6
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Quote:
 Originally Posted by DannyT is this in a crawl or a basement.
crawl
varies between 2-5 feet of space between the ground and the floor joists

 10-02-2012, 09:05 PM #7 Doing it myself     Join Date: Apr 2006 Location: Crescent City, CA Posts: 3,798 Rewards Points: 2,086 If you read it on the internet it must be true. 1/8" per foot here is only legal outside of the structure which includes porches, overhangs, decks, etc...etc...... Also in regards to change in direction : Horizontal changes of direction in excess of 135* require a cleanout. First you need to decide whether or not you already have a cleanout, which direction it's intended to service, and how many degrees change of direction are on that line after the cleanout. This will tell you where you will need cleanouts. At 1/4" per foot you should have plenty of room, assuming that your measurement of 24 inches is from the bottom of the joist to the top of the pipe. __________________ Journeyman Plumber
 The Following 2 Users Say Thank You to Alan For This Useful Post: ben's plumbing (10-02-2012), ddawg16 (10-02-2012)
 10-02-2012, 11:30 PM #8 JOATMON     Join Date: Aug 2011 Location: S. California Posts: 10,829 Rewards Points: 818 Blog Entries: 2 Where did the 1/8" come from....I have never heard that.....maybe it applies to drainage for a yard..... __________________ Even if you are on the right track, you will still get run over if you just sit there. My 2-Story Addition Build in Progress Link ... My Garage Build Link and My Jeep Build Link
10-02-2012, 11:34 PM   #9
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Quote:
 Originally Posted by ddawg16 Where did the 1/8" come from....I have never heard that.....maybe it applies to drainage for a yard.....
UPC- 4" may be ran at 1/8"ft, fixture load is decreased by 20% and is subject to AHJ approval. Inside or outside. It is usually excepted and pretty standard practice in my area when grade is an issue

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