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Anchors in wood studs
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suobs


Dec 30, 2012, 12:26 PM
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Anchors in wood studs
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I'm building an outdoor climbing wall about 15' high against a wall of my house. It will be framed with studs and seismic structural connectors like a structural framed building wall with 2x6 studs and exterior plywood surface. I'm not having trouble finding plans for wood walls and recommendations for what to use for top anchors but a taboo topic seems to be how to attach the anchors in wood. Is there any solid way to install hanger anchors (for example a Fixe or Metolius stainless steel top anchor hanger, sized for a single 3/8" bolt) in a wood stud? From my construction experience, I'm thinking a 4" lag screw into the stud. Or is there another approach?


(This post was edited by suobs on Dec 30, 2012, 12:50 PM)


acorneau


Dec 30, 2012, 12:57 PM
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Re: [suobs] Anchors in wood studs [In reply to]
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Grade-8 hex bolt and nut, large washers on both sides, plus an extra "lock" nut after the grade-8 nut.

Oh, and it better be threaded through some beefy timber, like a 4x6 or better.


JimTitt


Dec 30, 2012, 1:07 PM
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Re: [suobs] Anchors in wood studs [In reply to]
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The standard system at least in Europe is a 4" square plate with a nut welded on the back and screwed onto the back face of the ply, for top anchors two are required joined by chain.
If you can access the back of the studs then Iīd just bolt through like the man said.


suobs


Dec 30, 2012, 1:50 PM
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Re: [JimTitt] Anchors in wood studs [In reply to]
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Jim, do you know the thickness of the plywood used in Europe? 5/8"? 3/4"? Or more than one layer maybe?

Steve


JimTitt


Dec 30, 2012, 11:53 PM
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Re: [suobs] Anchors in wood studs [In reply to]
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Pretty normal is 7/8" (the metric equivalent naturally enough which is 22mm) but for a home wall thatīs fairly overkill. Plenty of studwork is normally better for home walls, panel flex is annoying and the holds keep coming loose!
There is a European Standard for walls (EN12572) but this tells you how strong they must be and how the tests are performed, not what you use to make them.


gunkiemike


Jan 2, 2013, 3:00 AM
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Re: [suobs] Anchors in wood studs [In reply to]
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Why? The wall's only going to be 15' tall. Get a few bouldering pads.


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