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Percolation Test Result T = 2.5

  • 03-03-2008 10:35pm
    #1
    Gun Shy
    Registered Users, Registered Users 2 Posts: 207 ✭✭


    Hi

    I havent got all the paperwork yet but was told by the planning office that (They do the Test) my T Value was T = 2.5 and that this was a fail.

    I thought you only failed if the Value was under 1 or over 50 can anyone clarify please.

    Thanks


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,169 ✭✭✭✭sydthebeat


    Gun Shy wrote: »
    Hi

    I havent got all the paperwork yet but was told by the planning office that (They do the Test) my T Value was T = 2.5 and that this was a fail.

    I thought you only failed if the Value was under 1 or over 50 can anyone clarify please.

    Thanks

    a fail is between 5 and 50 (or even 60 in some cases)

    a figure of 2.5 means the water dropped 100mm in less than 10 mins.
    the quickest it can drop is 20 mins


  • #3
    -unlaoised-
    Closed Accounts Posts: 26 ✭-unlaoised-


    hi,
    A proposed percolation area whose T value is less than 5 or greater than 60 has failed test. this is from SR6:1991.
    If the T test fails it may still be possible to use a treatment system on site. Minimum site area will need to be 2000 sq metres / approx 1/2 acre.
    Some counties eg. laois still do the perc tests themselves. they will not do a P test.
    It will be necessary to get a site specific test done by the proprietary wastewater manufacturer prior to lodging an application.


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