Another Mortise and Tenon,(M+T), Question
Another Mortise and Tenon,(M+T), Question
(OP)
This barn I am reviewing will be constructed at a different location than its original one. When checking the mortise and tenon connections, The pegs, ( wood dowels) are not adequate to resist the uplift loads at the posts to purlins connections. Can I rely on glue to transfer the loads? If the tenon is fully engaged, its capacity in tension is adequate. The cross section of the tenons is 1-1/2" x 7". I know glue is used with M+T joints but not sure if it is used in large joints of barns/houses.
Any comments are welcome. Thanks for the help.
Any comments are welcome. Thanks for the help.






RE: Another Mortise and Tenon,(M+T), Question
I have seen some local jurisdictions accept glued joints though, but very few.
This is a sticky area.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Another Mortise and Tenon,(M+T), Question
RE: Another Mortise and Tenon,(M+T), Question
Can you post a picture of the connection you are working with?
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Another Mortise and Tenon,(M+T), Question
RE: Another Mortise and Tenon,(M+T), Question
RE: Another Mortise and Tenon,(M+T), Question
RE: Another Mortise and Tenon,(M+T), Question
I would seriously think about either increasing the capacity of the wood dowel, either by diameter or species or both, or use a metal dowel with wood cover plates at the outside of the 8X8 beam.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Another Mortise and Tenon,(M+T), Question
Dik
RE: Another Mortise and Tenon,(M+T), Question
If it is too long, you could laminate two 4x8 posts with a groove to receive the rod in the middle.
BA
RE: Another Mortise and Tenon,(M+T), Question
Link
TFEC-1 provides guidance on mortise and tenon joints.
Larry Reynolds
RE: Another Mortise and Tenon,(M+T), Question
Dik
RE: Another Mortise and Tenon,(M+T), Question