Previous Thread
Next Thread
Print Thread
Rate Thread
Japanese Tie Beam to Plate Joinery #22475 02/01/10 04:14 PM
Joined: Nov 2005
Posts: 305
T
timberwrestler Offline OP
Member
OP Offline
Member
T
Joined: Nov 2005
Posts: 305
I've been wondering what the most effective joint for joining round tie beams to the plate would be. I'm guessing a cog of some kind. It seems like a dovetail would be putting a lot of dependence on a very small amount of wood. I could drop the ties into the posts, but I would rather not. There's a few options shown in Engel's book.

Thanks,
Brad

Re: Japanese Tie Beam to Plate Joinery [Re: timberwrestler] #22478 02/01/10 08:20 PM
Joined: Dec 1999
Posts: 171
C
Chris Hall Offline
Member
Offline
Member
C
Joined: Dec 1999
Posts: 171
Hi Brad,

thanks for posting up the question. The three versions shown in Engel's book comprise the standard choices. As Engel and many others have noted, the housed dovetail is a weak option. If one goes with the housed dovetail then a reinforcing tie bolt is required to tie the beam horizontally to the plate.

The cogged lap joint is the best option, if you're looking for structural effectiveness. There are a couple of different versions besides the one shown in Engel's book, however what he does show is fine. Engel does however mis-name the cogged lap joint illustrated - it is not, as he calls it, a variation on kyōro gake, it has its own name and is called tsuki-watari ago

~Chris


My blog on carpentry practice, East and West:

https://thecarpentryway.blog

Moderated by  Chris Hall, Jim Rogers, mdfinc 

Newest Members
HFT, Wrongthinker, kaymaxi, RLTJohn, fendrishi
5134 Registered Users
Powered by UBB.threads™ PHP Forum Software 7.7.3
(Release build 20190728)
PHP: 5.4.45 Page Time: 0.041s Queries: 16 (0.008s) Memory: 3.1109 MB (Peak: 3.3974 MB) Data Comp: Off Server Time: 2024-03-28 16:31:25 UTC
Valid HTML 5 and Valid CSS