22 mm
2007-02-07 04:57:21
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answer #1
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answered by Anonymous
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Building codes change frequently. But basically 1-2 toilets need a 3/4" feed to the house. 4-6 toilets need a 1" feed to the house, seperating no more than two toilets on each 3/4" line fed by the 1" supply line. And no more than two fixtures on each 1/2" line. Hose bibbs do not count. As you reduce the number of toilets on the line you can reduce pipe sizing. Follow the rules above. If you have a sprinkler system feeding drom the same line you may want to upgrade a size to 1 1/4" to the tee that the sprinklers are tied into just to increase your volume availability.
2007-02-07 18:18:19
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answer #2
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answered by ender3113 3
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For short runs without sprinklers 3/4" is common. The longer the pipe, the more friction drop and reduction in pressure. Automatic fire sprinklers will require a higher capacity. You will be ok if you match the size of the water pipe at your service connection. You can ask the water district or a plumber for guidance!
2007-02-07 12:58:21
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answer #3
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answered by Doug G 5
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typically 20 or 25 mm MDPE pipe.
Older systems may be 1/2 or 2/4 inch metal.
To get higher you need special circumstances, like our cows/sheep/campsite etc. For that we have 32mm but it requires a network survey from the water utility and you have to prove you need more than the 20 / 25 mm
The pipe down the road varies, ours is 150 mm
2007-02-07 13:06:20
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answer #4
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answered by Michael H 7
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Residential code is 3/4" CPVC regardless of the length of the run. 1" may be used in some areas where the residence is quite large and has several toilets.
Commercial code depends on the property. 3/4" is acceptible for small shops, but for production it has to be 4" to 6".
Good Luck
2007-02-07 13:29:14
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answer #5
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answered by A_Kansan 4
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We have one inch inside diameter. When I get into the house I use 3/4 inch through out.
2007-02-07 13:24:04
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answer #6
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answered by Thomas S 6
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Older homes 3/4 inch inside diameter...in newer homes its 1"
2007-02-07 12:57:00
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answer #7
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answered by Anonymous
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From outside stop tap to inside stop tap is 25mm mdp, from inside stop tap 15mm copper or 15mm plastic pipe (poly plumb),iam a plumber with 38 years experiance.
2007-02-07 17:00:24
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answer #8
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answered by geoffshawz 1
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3/4" to 1" will do or ask the city what size the meter is?
2007-02-07 12:57:59
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answer #9
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answered by Alex 4
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1 inch diameter
2007-02-07 12:57:22
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answer #10
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answered by Robert P 6
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