Results 1 to 6 of 6

Thread: Concrete stumps

  1. #1
    Join Date
    Nov 2013
    Location
    Moe australia
    Posts
    1

    Default Concrete stumps

    I have to put in some concrete stumps for my extension , I know how much concrete I have to put for the pad but I can't find anywhere that tells me the size and depth of hole needed . Can anyone help me with this ?.

  2. #2
    Join Date
    May 1999
    Location
    Tooradin,Victoria,Australia
    Age
    74
    Posts
    2,515

    Default

    A question better asked in here, our sister site:Renovate Forums - Home

  3. #3
    Join Date
    Dec 2008
    Location
    Yarra Valley Vic oz
    Posts
    2,462

    Default

    The size and depth of the hole is determined by the soil test/engineers report.

    This information should be available from your approved plans.

  4. #4
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    75
    Posts
    832

    Default

    Quote Originally Posted by Bedford View Post
    The size and depth of the hole is determined by the soil test/engineers report.

    This information should be available from your approved plans.
    Correct, that is the only allowable method that the certifier or council / engineering inspector will accept and pass
    The person who never made a mistake never made anything

    Cheers
    Ray

  5. #5
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    75
    Posts
    832

    Default

    Quote Originally Posted by simon1969 View Post
    I have to put in some concrete stumps for my extension , I know how much concrete I have to put for the pad but I can't find anywhere that tells me the size and depth of hole needed . Can anyone help me with this ?.
    How do you know how much concrete for the pad if you dont know what size hole has to be excavated LxWxH = volume

    If you know the quantity then your question should be "what depth do I excavate to to achieve the correct bearing"
    NOTE all the piers MUST achive the same bearing value ie: if one is rock / shale then all must be rock / shale, if clay / alluvial it is either H (highly reactive) M (moderately reactive) S (stable).

    The engineers design SHOULD specify which classification it is and the pads designed accordingly
    The person who never made a mistake never made anything

    Cheers
    Ray

  6. #6
    Join Date
    Aug 2010
    Location
    Horsham Victoria
    Posts
    1,142

    Default

    Some shires / councils will give a minimum depth and diameter in the absence of engineer specifications

    Typically 450 across and 1100 deep from memory.

    Again from memory and only to serve as an example they may specify un-reinforced concrete minimum 200 mm deep under stump allowing rest to be back filled with soil

    Like said. Check the other forum


    Dave

    The Turning Cowboy

Similar Threads

  1. Can I concrete over tree stumps?
    By ubeaut in forum CONCRETING
    Replies: 0
    Last Post: 16th November 2008, 07:18 AM
  2. Help - Concrete Mix for Stumps
    By OBBob in forum CONCRETING
    Replies: 10
    Last Post: 6th March 2006, 07:33 AM

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •