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  1. #16
    Join Date
    Oct 2006
    Location
    ACT
    Posts
    102

    Default

    so what would the maximum span be for the posts be using two 90 x 45 for bearers?

  2. #17
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    59
    Posts
    5,026

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    My span tables don't show 90x90 but a 90x70 in F5 will span up to 1200 or 1500 in F8.
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  3. #18
    Join Date
    Dec 2005
    Location
    geelong
    Posts
    59

    Default

    1500mm max between posts using two 90 x 45's (or 90 x 90 ) and 1500mm for the joists ( 90 x 45). This is max though and although will do the job and is legal it will have a little spring in it . Better th bring them all in a little if you can.

  4. #19
    Join Date
    Apr 2006
    Location
    Melbourne Victoria
    Posts
    0

    Default

    I had a look at the tables I have and don't show 90x90 in F5.

    Bearer span also takes into account the joist span. Longer joist span = less bearer span, as each bearer is now supporting more floor.

    Try this for a program for workiong out spans

    https://www.woodworkforums.com/showthread.php?t=55014

  5. #20
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    59
    Posts
    5,026

    Default

    Yes, the spans I gave were for a bearer spacing of 1800, but given the tight space between the pool and the retaining wall, he's not likely to exceed that. Possibly on the downhill side though - however I'd suggest a much deeper bearer for that portion of the deck.
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

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