Re: scarfing question
#5736
01/09/07 05:31 AM
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Joined: Jul 2004
Posts: 122
Brock Smith
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Thanks everyone! I appreciate your help.
Cheers, Brock
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Re: scarfing question
#5737
01/12/07 04:13 AM
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Joined: Dec 2002
Posts: 94
jim haslip
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*jumping in a little late, but what the heck*
I have always considered that the capacity of the Brace to care a load should not be considered when calculating spans, loads, etc, since the purpose of the braces is not to carry loads, but rather, to prevent the racking of the frame and stabilizng it against lateral loads. On topic, I would splice the plate over the brace as directed in the above diagram if I have the choice, or over the post, as a second choice, if neccesary.
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Re: scarfing question
#5738
01/13/07 01:27 AM
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Joined: Mar 2002
Posts: 1,198
northern hewer
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In the old text books also written by very experienced people, they advocate a balluster to help support a scarf joint if in fact one has to be used, you often see this in mill framing.
NH
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Re: scarfing question
#5739
01/13/07 02:23 AM
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Joined: Apr 1999
Posts: 245
Tom Cundiff
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By Jim Haslip I have always considered that the capacity of the Brace to care a load should not be considered when calculating spans, loads, etc, since the purpose of the braces is not to carry loads, but rather, to prevent the racking of the frame and stabilizng it against lateral loads. I agree, but I do not think that we should continue to ignore the shear forces that the braces are capabale of exerting when they are loaded in compression. For this reason, I do not believe that placing the scarf joint over the brace is any better than placing it over the post. Tom.
Not all who wander are lost.
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Re: scarfing question
#5740
01/15/07 04:01 AM
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Joined: Jul 2004
Posts: 122
Brock Smith
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Hey NH,
Can you please explain baluster? I only know it in stair terminology.
Thanks, Brock
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Re: scarfing question
#5741
01/15/07 05:04 PM
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Joined: Apr 1999
Posts: 245
Tom Cundiff
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NH , do you mean Bolster instead of Baluster ? Tom
Not all who wander are lost.
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Re: scarfing question
#5742
01/15/07 07:31 PM
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Joined: Dec 2006
Posts: 103
DKR
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Tom, in the drawing of the "scarf joint over the post" that you posted on 1/5, you have two pegs in the the post tenon, both into the lower timber. Why not have two pegs, with one into the lower timber and one into the upper?
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Re: scarfing question
#5743
01/15/07 08:05 PM
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Joined: Apr 1999
Posts: 245
Tom Cundiff
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DKR, Good eye for detail. If the plate material is green it will shrink. Being pegged to the tenon in both places may seperate the two halves of the scarf as the plate drys. Drawboring the pegs will keep the lower half tight to the post but may not be enough for the top half. The pegs in the scarf and the through tenon should be enough to keep it together. I have also seen in old frames the through tenon cut just shy of flush with the top of the plate. Presumably so that it would not stick up as the plate shrinks. Tom
Not all who wander are lost.
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Re: scarfing question
#5744
01/15/07 08:41 PM
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Joined: Apr 1999
Posts: 245
Tom Cundiff
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I have also seen wedges dropped in from the top on the end of the mortice to tighten up the fit of the through tenon. Tom
Not all who wander are lost.
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Re: scarfing question
#5745
01/16/07 05:05 AM
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Joined: Nov 2006
Posts: 850
mo
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Just curious, but what about just using a stronger scarf joint that alleviates where you have to put it?
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