Irrigation pipe trench depth Why deeper than frost line if you winterize the system ?

Discussion in 'Irrigation / Sprinkler Forum' started by Mini Me, Mar 21, 2021.

  1. Mini Me

    Mini Me Member

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    Toronto
    Do we need to dig deeper that the frost line if we remove the water from the pipes by using an air compressor or a similar procedure ?
     
  2. PlumbNuts

    PlumbNuts SC Licensed Plumbing Contractor

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    Owner, Plumbing Repair Service
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    Fort Mill,SC
    The answer to that question is going to be determined by the building codes that are in effect for your jurisdiction.
    If your code states a specific bury depth due to frost line does it have an exclusion for if it is winterized every year.

    If your code has a minimum bury depth then mostly like ly there is not a work around.
     
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  4. WorthFlorida

    WorthFlorida The wife is still training me.

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    Orlando, Florida
    If it is irrigation only there are no codes to be concerned with. The only area if the water source is from a municipal water company (city water) that there must be a backflow device or a well used for domestic water. In Florida there is a code on the distance a sprinkler can be to the home structure.

    If this is a water supply for a cabin, etc. then there could be codes for pipe depth. Burying a pipe in the frost zone, with each freeze the pipe could work itself to the surface from the heave and eventually break.
     
  5. Mini Me

    Mini Me Member

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    Aug 13, 2020
    Location:
    Toronto
    There is nothing about the irrigations systems in the Ontario Building code
     
  6. PlumbNuts

    PlumbNuts SC Licensed Plumbing Contractor

    Joined:
    Feb 11, 2021
    Occupation:
    Owner, Plumbing Repair Service
    Location:
    Fort Mill,SC
    Is there a specific reason for not wanting to dig below the frost line?
    If there is not other than less digging, then it should be below the frost line.
    WorthFlorida gave one really good reason.
     
  7. Mini Me

    Mini Me Member

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    Location:
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    Yeah the efforts plus on a certain stretch it might not be possible , details coming in a dedicated thread in the next 3-5 minutes
     
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