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Discussion in 'Off-Topic Discussion' started by 2011Streaker, Jun 15, 2012.

  1. Jun 15, 2012 at 12:35 PM
    #1
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    I received a porch swing as a gift as seen here:

    http://pawleysislandhammocks.com/detail.php?id=S-105

    The mounting hardware that came with it is a backet with a screw on each end and a dip in the middle for an S hook. Our farmer's porch has vinyl soffet on the roof so utilizing this bracket isnt an option without making ugly cuts into the soffet. Instead i got an eye hook rated at 330 pounds and predrilled a hole into one of the rafters (not sure if that is the correct name for the big beams in the roof of the porch, anyway..) and it is solid. However when we sit in the hammock the eye hook moves ever so slightly back and forth. i am concerned overtime that it will wiggle itself loose and someone could fall.

    Is this a legitimate fear? Are there other options? I have the thing tightened in really good and the motion is relatively minor but I am still worried. I also was considering putting some kinda ring on the eye hook to allow more slipping during swinging so less stress was placed on the eye hook itself.

    Any suggestions would be greatly appreciated. I will upload a pic once I can.
     
  2. Jun 15, 2012 at 12:40 PM
    #2
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    Here is a pic of my setup. The carabiner is there because the S hook that came with the kit is too small for the rugged eye hook I got.

    Hope this helps an expert in the field help me out.

    Thanks!

    photo.jpg
     
  3. Jun 15, 2012 at 12:45 PM
    #3
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    Yes, I think it's a legitimate fear. You should use one of these (longer if need be) with some washers. You'll probably have to pull a few pieces of soffet to get to it though.
    [​IMG]
     
  4. Jun 15, 2012 at 12:46 PM
    #4
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    If the eye bolt is moving, either it's not set properly (you may have pre-drilled too large of a hole), or it's moving the entire rafter. Either way, you need to fix it in my opinion. If you screwed that in my hand and didn't need either a bar in the middle of the eye bolt or a wrench for leverage to screw the bolt all the way in, then the pilot hole was probably too large.

    If the rafter is moving, you might be able to stop this by bracing the load bearing rafter against adjacent rafters or bolt a 2x4 pependicular to the rafter for added rigidity side to side since the rafter was originally intended to hold a vertical load, not a swinging load.
     
  5. Jun 15, 2012 at 12:51 PM
    #5
    OZ-T

    OZ-T All of those moments....will be lost.....in time

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    Is this a flat or sloped soffit ?
     
  6. Jun 15, 2012 at 12:54 PM
    #6
    oldstick

    oldstick Middle Age Member

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    Looks like it is probably ok. The movement is from the substantial weight shifting from side to side in the hook, so adding another ring wouldn't change anything.

    Double check the eyehook is screwed into the center of the rafter, then I would bury the screw shank all the way in until the eye is pressing against the wood.

    Then if there is still movement, it is probably actually the rafter flexing a tad with the weight. If the rafters happen to be made of only 2 x 4s, that might be a little on the shaky side for a swing.
     
  7. Jun 15, 2012 at 12:54 PM
    #7
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    I don't think the rafter itself is moving, it's just a little wiggle with the eyebolt itself. I have the tool to pull the soffet off but it wasn't cooperating and this is my first time using one so I really am clueless on it.

    I will explore that option. The swing holds weight just fine, is it still possible the hole was predrilled too large?
     
  8. Jun 15, 2012 at 12:55 PM
    #8
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    Roof is flat underneath
     
  9. Jun 15, 2012 at 1:04 PM
    #9
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    I used a screwdriver, there was no putting it in by hand.
     
  10. Jun 15, 2012 at 1:07 PM
    #10
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    Then pull the soffit material off, and swing and I'll bet you'll see the rafter flexing since it was meant to take the weight on the roof, not a hanging, swinging weight. If you shore up the rafter that the swing is hanging from, you won't have any problems.

    To do this, I'd either brace it against the rafter on either side for additional support using 2x4 or 2x6 blocking or beef up the original rafter by using either a 2x4 on edge for lateral support or kickers so it can't flex as much.
     
  11. Jun 15, 2012 at 1:14 PM
    #11
    OZ-T

    OZ-T All of those moments....will be lost.....in time

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    So it's not a rafter , it's a ceiling joist or bottom chord of a truss

    Drilling through the bottom chord of a truss is not awesome

    Having said that , I agree with Pugga , the joist or bottom chord is probably rotating and could stand to be braced .
     
  12. Jun 15, 2012 at 1:14 PM
    #12
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    Cool. Argh. I didn't want to pull that damn soffit off but I guess I have no choice to really see whats going on. Thanks!

     
  13. Jun 15, 2012 at 1:16 PM
    #13
    OZ-T

    OZ-T All of those moments....will be lost.....in time

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    You may have access to this area via an attic access somewhere in your house , try that before ganking the soffit
     
  14. Jun 15, 2012 at 1:22 PM
    #14
    Cypherian

    Cypherian Well-Known Member

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    Any anchor point moving when screwed into a piece of wood is bad, it will eventually open the hole up. If you are sure you didnt drill the hole to large then as stated your rafter may not be up to the task. Which way is the swing, swinging IE with the run of the rafter or against it? As against it will cause the rafter to flex even with it could cause flex depending on length of run. Check both ends of the rafter depending on age etc it could be rotted off or not secured very well people have been known to miss with nail guns :}. If the rafter is secured on both ends and structurally sound. Then, as suggested your going to have to brace it side to side and maybe consider sistering in a rafter on either side of it IE install a 2x4 or 2x6 which ever it is along side of the rafter with the eye in it making a sandwich. You must attach the sistered rafters to ledger the porch roof header and to the rafter the eye is in. I prefer screws all the way around but if you have to use nails ensure you drive them in at an angle on the ledger,header and original rafter. Just my thoughts not a contractor but have build a whole lot of things and nothing I have built ever fell down or broke :}

    Cypher
     
  15. Jun 15, 2012 at 1:29 PM
    #15
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    ^^ Glued and screwed, I wouldn't even bother with nails if you're trying to sister up the bottom joist.
     
  16. Jun 15, 2012 at 2:34 PM
    #16
    OZ-T

    OZ-T All of those moments....will be lost.....in time

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    Sistering the joist will only help with deflection , not rotation

    Run some strapping across the top of the joists / bottom chord to stop the rotation
     
  17. Jul 12, 2012 at 9:09 AM
    #17
    2011Streaker

    2011Streaker [OP] Well-Known Member

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    update:

    thanks for all your feedback. I got the soffit off and indeed it was 2x4's.

    I used 2x4 blocks to brace it (2 on each side of the joist thats holding the swing) so its sturdy now. With 4 additional braces the thing does NOT move. No squeaking while swinging either.

    Thanks for the great feedback.
     
  18. Jul 12, 2012 at 10:17 AM
    #18
    OZ-T

    OZ-T All of those moments....will be lost.....in time

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