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  1. #1
    Join Date
    Apr 2009
    Posts
    3

    Default Rafter holders any good?

    I'm having a house built in western NY. I noticed the rafters in one room being held at a beam entering toward the kitchen look strange. They look as if they are upside-down. I'm worried that they won't be strong enough to hold the weight of the roof and snow thus causing drywall cracking some years down the road.

    I'm wondering if anyone here could comment on if this looks OK, or if the holder is being used improperly. I don't know. Please advise.

    Two photos are attached showing the room and holders. The room is about 19' x 17' and 14' high ceiling using 5/12 pitch. 9' high ceiling entering kitchen where the header beam is.
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  2. #2
    Join Date
    Jan 2009
    Location
    Needham, MA
    Posts
    559

    Default Re: Rafter holders any good?

    looks to me like it was done properly

  3. #3
    Join Date
    Aug 2007
    Posts
    6,481

    Default Re: Rafter holders any good?

    You could check the Simpson Strong-Tie website and see what the rating and installation guide says. I would think that it needs to be secured from underneath if it's for support of the rafter. If it's a hurricane strap, then it should be more than sufficient.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  4. #4
    Join Date
    Mar 2009
    Location
    OKC
    Posts
    247

    Default Re: Rafter holders any good?

    you should check with the company where you bought the trusses.

  5. #5
    Join Date
    Mar 2009
    Posts
    1,387

    Default Re: Rafter holders any good?

    Howdy, contact whom made the truss and ask them. Does the tie have a manufacturer stamped into it? If so they can tell you proper instillation. It amazes me what engineering does verses common sense. I would think the strapping would go on the bottom of the truss. But i'd bet that the top is strapped to counter any up lifting. Ya know you could always talk to the builder about how you were admiring the work but wonder how the truss tie works when it appears upside down?

    Oh when you find out please post to share the infor...
    *** looks like it will be a wonderful structure.

  6. #6

    Default Re: Rafter holders any good?

    I've never seen anything that provides for an LSSU being used upside down, especially on a truss.

    I'd expect to have seen for example an STC in the correct orientation for bearing.

    Those are scissors trusses hope they weren't trimmed or used in the wrong orientation to bearing. Where are the plans?

  7. #7
    Join Date
    Apr 2009
    Posts
    3

    Default Re: Rafter holders any good?

    Ok, thanks everyone for your input. I think most of you agree I should check with the manufacture of the truss or the detailed plans. I guess I could ask the builder to see them, but I'm not sure I'd know how to interpret them anyway. I don't know acronyms like STC and LSSU. I'm really clueless when it comes to framing.

    I was really hoping someone here may have recognized the hanger in question and realized it's purpose like right or wrong. The reply from 'MLBSF' say's it looks correct. And I'm not getting the sense that it is definitely wrong, so it's probably OK, and not something that will cause a disaster later.

    Thanks for your time.

  8. #8
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Rafter holders any good?

    Hmmmm .... interesting .
    I'd be curious what was spec'd on the drawing for those connections.
    Those look like LSSU connectors ...... commonly used for rafter to ridge connections..... the orientation looks correct though.


    2 cents
    "" an ounce of perception -- a pound of obscure "
    - Rush

  9. #9
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Rafter holders any good?

    Just had another look see at those pictures.

    Where the sheathing stops short .... hopefully they will take measures to close those openings and air seal them .... stuffing fiberglass batts ain't going to cut it.
    Otherwise I can see potential problems with snow/ice melt moisture issues in that area.

    Also ... it's going to a challenge to vent that side of the roof .


    Another 2 cents.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  10. #10

    Default Re: Rafter holders any good?

    Those are a type LSSU sloped only connectors and they are upside down.

    The "A" Flanges should be pointing up and the adjustable (bent)slope cut carrier should be supporting on the underside of the member being connected and bent up, not over the top chord like a strap and bent out. Scissor truss will spread for horizontal displacement and slide down as those are installed, have to fix at intersection.

    Truss mfg don't do the specifications for bearing connection, that's up to the architect or design engineer who produces the plans for the structure. See the building plans.
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    Last edited by Moon Over My Hammy; 04-23-2009 at 03:30 PM.

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