Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Waste drains into sewer connections

  • 06-07-2015 4:46pm
    #1
    tedimc
    Registered Users, Registered Users 2 Posts: 623 ✭✭✭


    Interested to hear people's views on what is best practise for connecting drains (showers, sinks, washing machines) into the sewers.

    Should each drain go directly to an external gully trap? If so, what would be the max run.

    Or is it ok to connect them to foul pipe inside the house? I've read this can increase the risk of siphoning the shower traps and worse - backing up if a blockage occurs.

    Planning the sewer and drain runs at the moment, and have seen this done both ways. Any other advise is welcome. Its a refurb with a septic tank.

    Thanks.


Comments

  • #2
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    Firstly have you know Architect or Engineer involved with the job. They should provide Drawings showing all of this work.
    If it's and old two part septic tank then maybe you should consider replacement as to my knowledge they're no longer acceptable by the various County Councils.
    The length of run is not the problem it's making sure the levels are correct and maintained. I've seen so many jobs get this part wrong. Leading to continuous problems of Blockages, Overflows etc. if it is a long run then an AJ or Manhole along the way is good idea.
    If your using the Tank that already there then your pretty much stuck working within those levels. Your looking for a flow of between 1 in 40 and 1 in 60 gradient.
    Sink Drains should feed into Gulleys, and Gulleys in AJs and AJs in Manholes and Septic Tank. It all depends on how far away the Tank is.
    Toilets and Showers should feed into an AJ and then as above.
    Try to keep all connections separate as this keeps down the problems to one area. Don't forget plenty of Cleaning eye's where possible. Instead of using an elbow coming out a wall use a cleaning eye Tee.
    Always think of how am I going to clean this out if there is a problem.
    I cant'emphasis enough how important it is putting in the drains correctly. As there not usually easy to rectify later.

    Good luck with it.


  • #3
    tedimc
    Registered Users, Registered Users 2 Posts: 623 ✭✭✭tedimc


    Thanks for the response Sky6 - fully agree re the completing the drains correctly. I've a few family members which have had lots of niggley issues with their drains, hence part of the reason I'm doing them myself!!

    Manholes and tank are already in and seem to be in good condition - but as you suggest I'm limited by them regarding the fall. I'm putting plenty of AJs - one for each sewer connection into the main line. I was also going to hook the gullys into them.

    How do you propose the showers (and presume baths) connecting into the AJs? I'm trying to keep all pipes below ground - so do I come out of the house in waste pipe and then a saddle into the sewer line?

    Thanks.


Advertisement