Joint design
#4301
08/24/99 08:34 PM
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Joined: Aug 1999
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Rick Harvey
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where can i get info on wood joint design.
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Re: Joint design
#4303
08/25/99 04:25 PM
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Rick Harvey
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Does the book tell me how to design the joints?
Does it say what type & magnitude load the joints can withstand?
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Re: Joint design
#4304
08/26/99 10:57 AM
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Joined: Aug 1998
Posts: 56
Brian Wormington
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Rick:
Guild members have access to two research reports on joint strengths. One is known as the "Peg Report" and the second is known as the "Joint Report". Both are academic research that was supported by the Timber Frame Business Council and conducted at the University of Wyoming over the last few years
However, from my experience you will need more than such data to satisfy a building commission. It will probably take a set of plans stamped by a licensed P.E.
[This message has been edited by Brian W (edited 08-26-99).]
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Re: Joint design
#4305
08/26/99 04:23 PM
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Rick Harvey
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So the book you recommended, Design Workbook,
doesnt tell me how to design the joint.
Your message refering me to the Design Workbook was misleading.
rr
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Re: Joint design
#4306
09/03/99 01:53 PM
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Joined: Feb 1999
Posts: 22
Ed Levin
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There is plenty of material in the Guild's Design Workbook to help with joint design. In fact it is the single best resource currently available. Recommended articles include
Frame Engineering Joint Engineering I Joint Engineering II Engineered Tension Joinery Joinery Decisions Pegging Design Design of Joints in Traditional Timber Frame Buildings Experimental Evaluation of Traditional Timber Connections Analysis of Frames with Traditional Timber Connections Tying Joint Evolution 1690-1790 Variations on the English Tying Joint
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Re: Joint design
#4307
09/03/99 03:25 PM
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Joined: Feb 1999
Posts: 23
Grigg Mullen
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Rick, I have taught joint design workshops for the Guild. There is not yet a truly "one stop shopping" reference on joint design. In putting together the Guild courses, I drew from a number of sources, such as the NAtional Design Specifications for wood strebgth, some structural engineering texts, texts on timber design (mostly bolted connections), and various articles. I don't know your background, but It would appear that you can determine the loads that the joints must resist. It has been my experience that the maximum loading on most joints comes from some combination of gravity load (snow, dead weight, ...) and horizontal live load (Wind, earthquake). It is the horizontal portion of loading that presents the most difficulty in determining the joint loading. Good results rely on a proper structural analysis of the frame as an assembly. Good joint design depends on good knowledge of the loads the individual timbers are bringinh to the joint.
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Re: Joint design
#4308
09/03/99 06:40 PM
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Rick Harvey
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First I want to thank all for your time in posting to my questions.
I did get the Design Workbook & indeed it is very useful. so useful that i showed it to the Bldg. Safety wood plan reviewer in Anchorage & he is going to order one. Also, a structural engineer who has designed frames using RISA is going to get it.
Here the bldg officials wont approve the wood joints for Eq loading. They go by the code and only approve shear panels or cross-bracing, even cables, or a combo.
I want the frame to meet the eq design w/o the other methods, although i will use some of them. For this reason im going to use steel/bolt connectors. Mayby split ring , shearplates or steel side plates. Im also going to use hidden steel splines where possible.
These methods aren't pure Timber Frame but Post & Beam as others have said. However, this will speed construction & cost & meet EQ design criteria.
BTW, where im building is deep in the wooods on a 1/2 section & a building official will never see it. <g>
Regards,
Rick Harvey, PE
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