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  1. #1
    Join Date
    Sep 2005
    Location
    Vic
    Posts
    80

    Default Downpipe into tanks question

    Hey guys.
    l'm changing tanks which means all the downpipes from house roof will have to run over to the new tank . There's 3 downpipes which l guess would all have to feed into the one pipe running across to the new tank .
    ls the one pipe over to the new tank [ 100 ml ] enough to carry all the water from the 3 house downpipes ? House roof is 20 sq' .
    l'm at Port Campbell Vic and it can really pelt down at times .

    Cheers
    Jack

  2. #2
    Join Date
    Oct 2003
    Location
    Kentucky NSW near Tamworth, Australia
    Age
    86
    Posts
    1,067

    Default

    I have a 33 Square house roof plus a 6m x 7.2m garage roof running into two 90mm pipes and it copes pretty well in a torrential downpour.

    You could also either run two 90mm stormwater pipes side by side to the tank or run your 100mm pipes into a 150mm stormwater pipe to the tank if you were concerned.

  3. #3
    Join Date
    Sep 2005
    Location
    Vic
    Posts
    80

    Default

    Thanks allot Bazz.
    Sounds like one pipe across would be plenty with only 1/2 your total roof area . My place has 2 big tanks and after thought pipes and bits and pieces going 'everywhere' it's a night mare . 60 % of it all either did nothing or didn't work so l'm trying to minumise the lot back to the needed basics only .
    Cheers and thanks again.
    Jack

  4. #4
    Join Date
    Jun 2005
    Location
    sydney
    Posts
    100

    Default

    Hi
    2 things come to mind

    The local council should be able to help with sensible numbers for downpipe per area catchment

    2 if you have more than 1 downpipe into a tak tou will need the same area pipe to overflow that tank

    Look at a tank manufacturer website for more info, ( Bushmaster, They wont warrant the tank if you dont do this

    Doug

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