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  1. 22nd February 2012, 07:23 PM #1
    Haflen
    Haflen is offline New Member
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    Default Holes in timber studs

    Hey there. I'm a plumber in new home construction and I have a question for any chippies out there. Is there anything in the BCA that states what size and how far apart any holes drilled thru timber studs need to be? A builder I work for has recently stated that any holes that pass thru a stud (both load bearing and none load bearing) need to be 200mm (or there abouts) apart, and produced a diagram showing where holes should be drilled. I have no idea where the diagram is from. I've been plumbing for 14 years and never been made aware of any such regulation. I don't go hacking thru studs to the point there's no timber left, but there are situations where holes need to be closer than 200mm. Can any one shed some light on this.
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  2. 22nd February 2012 07:23 PM # ADS
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  3. 22nd February 2012, 08:17 PM #2
    wood muse
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    Building Code of Australia 2010 - Volume Two. Class 1 and 10 dwellings.

    try page 211... I see no mention of spacing
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  4. 22nd February 2012, 08:50 PM #3
    Sam
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    Hi Haflen,

    Welcome aboard.

    AS1684.4 2006 Non-cyclonic figure 6.3 page 45 states that the minimum distance between holes is the stud width x 3. So with a 70mm wide stud it's roughly 200. Max. hole diameter is 25mm.

    Cheers,

    Sam
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  5. 22nd February 2012, 08:57 PM #4
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    Catweazle
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    Default

    A bit of quick googling indicates:

    A.S 1684.4-2006 Residential Timber-Framed Construction - Simplified

    6.2.1.4, Notching, trenching and holes in studs and plates

    "The distance between holes and/or notches in a stud’s breadth is 3 times the stud’s depth."
    That'd mean for wall studs dressed to 90mm, holes would need to be 270mm apart.
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  6. 23rd February 2012, 09:33 PM #5
    Haflen
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    Smile

    Appreciated, thanks guys.
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