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Percolation problem...help!!!!

  • 30-09-2008 6:46am
    #1
    pjammer
    Registered Users, Registered Users 2 Posts: 3 ✭


    House built in 2000. Perculation test no problem passed without a glitch. We put in a bio - unit with perculation area. All went fine until last year, my perculation area doesn't seem to be working. There are three perculation pipes running in a fan shape from a central manhole they're 22ft long. I opened a trench at the end and cleared the pipes so they appear to be working ok now, alas there doesn't seem to be any soakage. I don't understand. Help!!!! Any ideas as to how I might be able to solve this problem.


Comments

  • #2
    Poor Uncle Tom
    Registered Users, Registered Users 2 Posts: 14,547 ✭✭✭✭Poor Uncle Tom


    pjammer wrote: »
    House built in 2000. Perculation test no problem passed without a glitch. We put in a bio - unit with perculation area. All went fine until last year, my perculation area doesn't seem to be working. There are three perculation pipes running in a fan shape from a central manhole they're 22ft long. I opened a trench at the end and cleared the pipes so they appear to be working ok now, alas there doesn't seem to be any soakage. I don't understand. Help!!!! Any ideas as to how I might be able to solve this problem.

    When the percolation test passed without a problem, what reault did it yield and what percolation piping length was recommended by the tester?

    Where did you get the configuration for the percolation area? Fan shape? Your total percolation piping length seems to be 18.5m the minimum recommendation in the year 2000 would have been 30m, obviously depending on results of perc test.

    Your site layout plan should have left you with room for a reserve percolation area.

    Get a local Arch, or Tech to have a look at it with you, and recommend a solution. I am amazed 18.5m got you through 8 years.

    A few points spring to my mind in this case and I would be interested to know:
    1. did you need to certify the system to the LA as part of a planning condition?
    2. did you have supervision for your build in the first place, if so, was it in stages or constant?
    3. do you have a Certificate of Compliance for your premises?


  • #3
    pjammer
    Registered Users, Registered Users 2 Posts: 3 ✭pjammer


    In reply to your questions,
    1. Yes I did have to certify it with a LA

    2. The build was supervised in stages

    3. Certificate of compliance this I don't remember I'll have to check.

    The layout of the perculation area was on a plan included with my plan layout for my house. All specs listed.
    Do you have any ideas as to how I might solve my problem? What I'm thinking of doing is digging a trench 30-40ft long and 3ft wide and linking it to the other trench filling them both with sand and stone with a perculation pipe connecting them. What do you think?:confused:

    Thanks for the support....


  • #4
    Poor Uncle Tom
    Registered Users, Registered Users 2 Posts: 14,547 ✭✭✭✭Poor Uncle Tom


    Be careful, ad hoc solutions may appear to work in the short term but you may be creating more trouble for yourself in the long run. eg., if you put in the trench you mentioned it is very little on its own and will only delay what you need to do now and may cost you more in wasted materials and clean up time.

    It looks as though you need to put in the reserve percolation area at this stage. The site layout plan you mentioned should show you where to put it. It is important that the reserve percolation area is constructed properly and I would say you should increase the trench/perc piping length to say 5 No. lengths of 19m, ask a local experts advice please.

    I think a lot of people don't realise that the Percolation Area is like any other working element on a premises. It has a finite lifespan and may need maintanance from time to time, hence the requirement for a reserve area on most sites.


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