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Old 03-04-2012, 03:31 PM   #1
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question regarding supply lines


Hey guys
I just had a quick question. I am redoing the supply lines in my aunts house. She had a mess of copper and galvanized and the routing isnt efficient. Its all 1/2" including the supply from the city. Question is: is there any benefit to me running things proper with 3/4" trunks and 1/2" supplies? If the city ever installed new services, it would be simple to run new up to the meter and have this house properly supplied.

Thanks for any input

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Old 03-04-2012, 03:36 PM   #2
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question regarding supply lines


The mains all need to be at least 3/4" and it's fine to go with 1/2" supplys.

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Old 03-04-2012, 04:46 PM   #3
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question regarding supply lines


My issue is that its only 1/2"coming into the house from the street to the meter
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Old 03-04-2012, 05:00 PM   #4
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question regarding supply lines


still run 3/4 mains with 1/2 branches....will be ok..
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Old 03-04-2012, 06:00 PM   #5
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question regarding supply lines


Thanks alot guys. I'll do that
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Old 03-04-2012, 07:41 PM   #6
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question regarding supply lines


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Thanks alot guys. I'll do that
yep welcome
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Old 03-06-2012, 01:17 PM   #7
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question regarding supply lines


I have a follow-up question:

What is the general consensus about running supply lines in exterior walls? This is in Canada where it can get cold (although you wouldnt know it this year). Many toilets and vanities are located on the exterior walls and I think bringing supply lines up through the floor, when their is no kick plate on the vanity is the best way to do it.

Your thoughts?
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Old 03-06-2012, 01:58 PM   #8
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question regarding supply lines


Does not meet most codes in the US to run it up through the floor or in an outside wall but, looks like your going to have to do what you have to do.
Is the underside of the house conditioned so the pipes do not freeze?
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Old 03-06-2012, 01:59 PM   #9
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question regarding supply lines


Best to avoid outside walls. I bring a lot of risers through the floor regardless of where the fixture is located. Not too difficult in vanities either
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Old 03-06-2012, 02:18 PM   #10
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Originally Posted by joecaption View Post
Does not meet most codes in the US to run it up through the floor or in an outside wall but, looks like your going to have to do what you have to do.
Is the underside of the house conditioned so the pipes do not freeze?
Yeah the house has a basement so I'll be running the new supplies through the joist spaces in the basement.
Is there a reason some codes do not allow from fllor installation?

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Best to avoid outside walls. I bring a lot of risers through the floor regardless of where the fixture is located. Not too difficult in vanities either
I wasn't thinking it was difficult. I've done it in kitchens but the skirt or kick board hide the pipe. I just want to avoid the copper pipes being visable. I think I'll run the pipes up the floor but set them back as far as I can.

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Old 03-06-2012, 03:07 PM   #11
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question regarding supply lines


Quote:
Originally Posted by psilva8 View Post
Yeah the house has a basement so I'll be running the new supplies through the joist spaces in the basement.
Is there a reason some codes do not allow from fllor installation?



I wasn't thinking it was difficult. I've done it in kitchens but the skirt or kick board hide the pipe. I just want to avoid the copper pipes being visable. I think I'll run the pipes up the floor but set them back as far as I can.
There is nothing in the UPC code that says you can't- I can't speak for your local AHJ. Stub the pipe about 2" through the floor. this will allow you to put the stop valve right on top the floor or cabinet base with little or no pipe exposed. Adjust your supply risers to fit.

When the housing market was good, this was common practice in my area. The plumbers could save a little M & L by going thru the floor vs. the wall- less fittings and supports for stubouts. It all added up on the bottom line when dealing with tight wad generals

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