New Rural water supply line, Meter to house 2,000 ft

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Rebecca3030, Jun 27, 2020.

  1. Rebecca3030

    Rebecca3030 New Member

    Joined:
    Jun 27, 2020
    Location:
    Monroe County Indiana
    35 years on well water, must switch to Rural water. Meter to house is approximately 2,000 ft down our gravel driveway. Field stone and limestone rich area. Contractor is going to use 1 inch PE pipe. Is it large enough? To start HDPE seems a better choice. What specific information should I be fact checking? Recently widowed senior Citizen welcomes blunt advice.
     
    Last edited: Jun 27, 2020
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Why switch? Well failed, or some regulation?

    AFAIK, 160 psi SIDR pipe is HDPE.

    Plugging 10 gpm, 1 inch, 0.03 mm roughness, 2000 ft in to the pipe calculator gave 70.45 psi pressure drop. That is a lot.
    http://www.pressure-drop.com/Online-Calculator/

    Clearly how much drop you can stand depends a lot on the minimum pressure that the water company promises to provide. Altitude also plays a part. For every foot of rise, you lose 0.422 0.433 psi in addition to the dynamic pressure drop that the calculator computes.

    Note that nominal 1 inch SIDR pipe is a little larger than 1 inch ID, but close enough. I think you would want 1.5 inch pipe.

    Other links for you:

    https://www.menards.com/main/search.html?sf_categoryHierarchy=&search=sidr

    https://www.harcofittings.com/DocumentLibrary/PE/hdpe_description.pdf

    https://www.huduser.gov/portal/publications/pex_design_guide.pdf See page 77 regarding snaking etc. You won't use PEX for this, but the same concepts apply. The pipe expands with temperature and contracts with cold. So pipe laid on a hot day would contract quite a bit.

    Pipe should go below the frost line.
     
    Last edited: Jun 27, 2020
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  4. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    For every foot of rise, you lose 0.422 psi


    .433

    100 ft X .433 = 43.3

    2.31 X 43.3 = 100.0 feet
     
  5. Jeff H Young

    Jeff H Young In the Trades

    Joined:
    Feb 27, 2020
    Location:
    92346

    What do the math problems represent? The one looks like the numbers youd get with a 100foot elevation change . .433x feet of elevation would equal PSI increase/decrease.
    But the latter 2.31x.433=100 feet what is this used for?
     
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