Re: Timber frame joint rings

"Bob La Londe"  wrote in message news:vdkbhc$3cilr$1@dont-email.me...
On 9/24/2024 4:27 AM, Jim Wilkins wrote:
...

This avoids a metal splice plate on the outside that would wear holes in the tarp covering.

Okay, I looked and I read.  Why are they better than nailing plates?
Price?  Production truss plants made the nail plate popular, but trusses
were built with plywood plates and and nails before that, and small
pieces of plywood are pretty cheap.  Even as expensive as plywood sheets
are these days.
Bob La Londe
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They will extend my dwindling supply of increasingly expensive long 3/8" lag screws.
I haven't found much engineering data on them, such as comparisons to other joining methods, thus my question. They are neater than splice plates if an industrial mill appearance offends your artistic sensibility. I built theatre scenery and had to consider such things, for cost sensitive non-professionals it's commonly 1x3s joined with plywood gussets so I'm familiar with their proper use. I think the main advantage of inlaid rings is in shear, such as the end joints of compressed diagonal braces. The rings won't help a joint in tension.
There will probably be metal or scrap plywood splice plates on the inside of the joints and where the rings are difficult to install. I have a strip of 1/4" x 5" steel to stiffen the center junction of the end cross braces that will depend on it for out-of-plane torsional stiffness during assembly.
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