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Trying to build a house over a mains pipe

  • 03-06-2019 3:04pm
    #1
    Registered Users, Registered Users 2 Posts: 10


    We are currently trying to build a house over a site next to my parents house. The site is a good size but there is a mains sewage pipe (600mm) going through the site which is causing us a problem!

    We have spoken to a few architects and engineers. Some say we could possibly move the pipe, others say we would not be able to move the pipe.

    Some have also mentioned about building over it by bridging the pipe but cannot find out if this is something that has ever been done before ?

    Any help or advice would be so appreciated here.


Comments

  • Moderators, Society & Culture Moderators Posts: 40,346 Mod ✭✭✭✭Gumbo


    jensmkelly wrote: »
    We are currently trying to build a house over a site next to my parents house. The site is a good size but there is a mains sewage pipe (600mm) going through the site which is causing us a problem!

    We have spoken to a few architects and engineers. Some say we could possibly move the pipe, others say we would not be able to move the pipe.

    Some have also mentioned about building over it by bridging the pipe but cannot find out if this is something that has ever been done before ?

    Any help or advice would be so appreciated here.

    If it’s a public sewer you need to keep a 3m way leave both sides. Forget about building over or near it.

    Your only option is to divert it at your expense. I’ve done it on a job recently in Sallynoggin.

    Pre planning with the area engineer was required.


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    Have you planning permission??


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    kceire wrote: »
    If it’s a public sewer you need to keep a 3m way leave both sides. Forget about building over or near it.

    Your only option is to divert it at your expense. I’ve done it on a job recently in Sallynoggin.

    Pre planning with the area engineer was required.



    Thanks for reply, yes initially we were working off a 3m way leave but Irish water sent us on an email, quoting from their code of practice stating that a 6m way leave was required.

    Yes we will have to ask permission from the people who own the land beside us to see can we route the pipe under there. There is a large farm beside the garden and it’s the only option to move the pipe.


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    sydthebeat wrote: »
    Have you planning permission??


    No, we don’t even really know where to start to be honest. Don’t want to get plans drawn up for something that is absolutely not possible and then have to start from scratch again with a totally different plan.


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    jensmkelly wrote: »
    No, we don’t even really know where to start to be honest. Don’t want to get plans drawn up for something that is absolutely not possible and then have to start from scratch again with a totally different plan.

    Your starting point, as above, would be a call to the local area services engineers to discuss it, and also arrange a pre planning metric with the planning section


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  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    sydthebeat wrote: »
    Your starting point, as above, would be a call to the local area services engineers to discuss it, and also arrange a pre planning metric with the planning section


    Sorry to sound stupid but when you say a local service engineer, what exactly do you mean ? We have been in touch with an engineer alright.


  • Registered Users, Registered Users 2 Posts: 78,579 ✭✭✭✭Victor


    jensmkelly wrote: »
    Sorry to sound stupid but when you say a local service engineer, what exactly do you mean ? We have been in touch with an engineer alright.

    The Irish Water / council drainage engineer with responsibility for your town / area.


  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    Victor wrote: »
    The Irish Water / council engineer with responsibility for your town / area.

    exactly...

    find out who the "local area engineer" is


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    Thanks a mil for that


  • Registered Users, Registered Users 2 Posts: 1,560 ✭✭✭Prenderb


    jensmkelly wrote: »
    ... Irish water sent us on an email, quoting from their code of practice stating that a 6m way leave was required. ..

    .

    Clarify - Is this a 6m wayleave being 3m each side from the centreline of the pipe, or a wayleave of 6m each side of the pipe?

    This could make a big difference to your thinking.


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  • Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    Prenderb wrote: »
    Clarify - Is this a 6m wayleave being 3m each side from the centreline of the pipe, or a wayleave of 6m each side of the pipe?

    This could make a big difference to your thinking.

    its generally 3m either side


  • Moderators, Society & Culture Moderators Posts: 40,346 Mod ✭✭✭✭Gumbo


    sydthebeat wrote: »
    its generally 3m either side

    +1


  • Registered Users, Registered Users 2 Posts: 9,760 ✭✭✭Effects


    Engineers can give different answers depending on who you have to deal with. I found Irish Water a nightmare to deal with myself, but maybe they have improved in the past two years.


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    Prenderb wrote: »
    Clarify - Is this a 6m wayleave being 3m each side from the centreline of the pipe, or a wayleave of 6m each side of the pipe?

    This could make a big difference to your thinking.

    Thanks, we weren’t thinking like that at all.


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    Effects wrote: »
    Engineers can give different answers depending on who you have to deal with. I found Irish Water a nightmare to deal with myself, but maybe they have improved in the past two years.


    Anyone we have spoken to has said the same.


  • Moderators, Society & Culture Moderators Posts: 40,346 Mod ✭✭✭✭Gumbo


    jensmkelly wrote: »
    Anyone we have spoken to has said the same.

    I found the area engineer in the councils straight forward and easy to deal with. It wasn’t Irish water we had to go though.


  • Registered Users, Registered Users 2 Posts: 10 jensmkelly


    kceire wrote: »
    I found the area engineer in the councils straight forward and easy to deal with. It wasn’t Irish water we had to go though.


    Thanks, my husband tried the council today and they referred us to Irish water...


  • Registered Users, Registered Users 2 Posts: 1,175 ✭✭✭kieran.


    I did did two diversions lately and the way leave on both was 10 times the pipe diameter to either side


  • Registered Users, Registered Users 2 Posts: 78,579 ✭✭✭✭Victor


    kieran. wrote: »
    I did did two diversions lately and the way leave on both was 10 times the pipe diameter to either side

    That might be a rule-of-thumb but takes no account of the depth the pipe is buried at. Deep pipes likely need a wider wayleave.


  • Registered Users, Registered Users 2 Posts: 3,795 ✭✭✭C3PO


    kieran. wrote: »
    I did did two diversions lately and the way leave on both was 10 times the pipe diameter to either side

    Which would tie in with what the OP said he was informed - 600mm pipe = 6mts each side.


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  • Registered Users, Registered Users 2 Posts: 1,097 ✭✭✭rayjdav


    If you have not got planniNg yet, your first step is actually a pre-connection inquiry application to IW. No point talking to council, nothing whatsoever to do with it. They will note it the PCE, the existing mains and, after connection approval, will issue a diversion agreement.... This is not going to be cheap, or quick, from experience.....


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