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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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Housing - New Build: Noggins - Needed or Not

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  1.  
    • CommentAuthorTriassic
    • CommentTimeSep 25th 2014
     
    I've just got the drawings back from the structural guy doing the calculations and he's specified 9.5mm OSB sheathing and noggins at 600mm centres.

    I'm sure I read somewhere (if only I could remember where!) that noggins are not required when using an OSB sheathing layer?

    Can someone point me in the right direction?
    • CommentAuthorDarylP
    • CommentTimeSep 25th 2014
     
    Triassis,
    what centres are the studs?
    US t/f specs allow for just studs @ 16" IIRC, 400mm?
    Cheers:smile:
    • CommentAuthorTriassic
    • CommentTimeSep 25th 2014 edited
     
    Studs and rafters all at 400mm centres.
    • CommentAuthorDarylP
    • CommentTimeSep 25th 2014
     
    I would suggest that at those c/s noggins are not required?:smile:
    •  
      CommentAuthorfostertom
    • CommentTimeSep 25th 2014 edited
     
    Posted By: TriassicI'm sure I read somewhere (if only I could remember where!) that noggins are not required when using an OSB sheathing layer?
    Sounds like you're not reading the discussion in
    http://www.greenbuildingforum.co.uk/forum114/comments.php?DiscussionID=12582&page=1#Comment_209574
    • CommentAuthorTriassic
    • CommentTimeSep 25th 2014
     
    Tom, I was, but it started out as a discussion about OSB thickness, rather than noggins.
    • CommentAuthorTimber
    • CommentTimeSep 25th 2014
     
    OSB usually only comes in 9mm, so confirm with the engineer why he (or she) said 9.5mm.

    As for noggings, assuming wall panels are standard heights, noggings are not needed structurally. The OSB, studs and rails do the work. Of course adding them is not bad, but equally it doesn't do much good in this type of wall. Also it will increase the thermal bridging of the insulation between the studs and reduce U-Values a bit.
    • CommentAuthorTriassic
    • CommentTimeSep 28th 2014
     
    The structural guy is adamant the noggins are required, because the software says so! Great !!
  9.  
    Not quite the same I know but I've got 350mm I-beam portal frame with 15mm OSB3 external racking and no noggins.
    • CommentAuthortony
    • CommentTimeSep 28th 2014
     
    I never used noggins except for non sheeted internal load bearing with bracing.
  11.  
    Posted By: tonyI never used noggins
    Ahhhh but you didn't use the software......

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