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Thread: 3000 ft house supply line help

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  1. #1
    DIY Junior Member mr fixit's Avatar
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    Default 3000 ft house supply line help

    I'm between a rock and a hard place. I'm asking for help from those with the knowledge.

    I have to install a supply line from my water meter to my home which will be just shy of 3000 feet. I need to know what size line i need to install.

    Some particulars; i have 30 acres in the county, there is no code requirement, and no inspection. I say that not as a good thing, or so that i can get away with anything, only to explain that it is what it is, and there is no oversight except for my own doing it right.

    I am almost finished with a house on this property, it is a 3br, 2 bath house. I have kitchen sink, dishwaser, clothes washer, water heater, 3 vanity sinks, 2 toilets, and 2 outside hose connections. The meter is tapping into a 6" main, which I have been told has 65+psi. There is minimal, if any elevation change from meter to house, possibly 5-10 feet max increase. As i said, it will be just shy of 3000 feet.

    I have done what research I can, and have a size of supply line in mind based on that research. But, I want to make sure, as much as I can.

    So, what size do i put in?

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  3. #3
    DIY Junior Member mr fixit's Avatar
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    Quote Originally Posted by Terry View Post
    http://www.terrylove.com/watersize.htm

    1.5" pipe would be nice.
    Actually, that is exactly the size I had in mind. The thing is, I have had more than a couple of people tell me I should use 2". They cant explain why, but they think is would be needed, or better, or...something. One of them was the guy at the supply house where I will be getting the pipe. Only explanation I got was, "well, if it was me...." Just made me doubt myself.

  4. #4
    DIY Junior Member mr fixit's Avatar
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    I used http://www.engineeringtoolbox.com/pe...oss-d_619.html and figured max flow at 12.7gpm, came up with .51 psi loss per 100'. I figure 35psi at my house is good.

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    Forum Admin, Expert Plumber Terry's Avatar
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    With a 1" meter, my UPC chart shows almost no loss with 2"
    There is degrading with 1.5"

  6. #6
    Moderator & Master Plumber hj's Avatar
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    As a practical matter what is the maximum gpm flow you will have with ANY fixture/faucet? Once you reach the optimum size, then anything over that has limited benefits. Use 1 1/2".
    Licensed residential and commercial plumber

  7. #7
    Forum Admin, Expert Plumber Terry's Avatar
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    That far off the grid, it would be nice to have something large enough for fire protection. I would have to see something burn down because your incoming line was a smidge too small.
    For my friend on a large piece of property, he installed a couple yard hydrants. Those things can really put out the water.

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