Wood truss connections
Wood truss connections
(OP)
This is my first time on the forum, so I am seeing how this works. I am in the process of re-designing a truss. It is a truss over a garage that previously had a 10' span in the middle with a room, that is now being expanded to 12'. I need to spec connector plates (nailed) for the new connections that are a result of moving the interior truss members. I have already found all resulting forces, but I need to design the connection plates.
Which manufacturers sell these plates?
I know Simpson has some, but not load rated.
Which manufacturers sell these plates?
I know Simpson has some, but not load rated.






RE: Wood truss connections
Is this a floor or roof truss? What type of "connection plates"? What type of forces (lateral, axial)?
RE: Wood truss connections
RE: Wood truss connections
RE: Wood truss connections
RE: Wood truss connections
www.mitekinc.com
RE: Wood truss connections
RE: Wood truss connections
I would rather use plywood than OSB though the better grades of OSB seem to hold up very well. I would use 1/2" plywood with box nails.
There is demo at www.achroneng.com that will let you look at one or two type trusses. The whole program is only $40.00 and is downloadable
RE: Wood truss connections
RE: Wood truss connections
First, if this truss is the some type I am used to, wood 2x4, NE USA, they are specifly designed to the exact load and location where they are expected to go. With very little (NO) extra margin included. The only acceptiable way to modify one of these type of trusses is to contact the truss maunfacturer and obtain their written permission to approve a proposed modification.
Having said all that, since this is a forum for engineers, I would use 3/8" Plywood on both faces of the existing truss to bridge the connection between the the new and old truss. Since you are in an area of low bending check the nails for shear(NDS-Anerican Wood Council) and check the new combined section for the bending moment. Review the existing truss at it midspan for the new additional bending moment.
Or just save yourself a lot of time and plywood both faces the entire lenght.
RE: Wood truss connections