Truss Plate Manufacturer
Truss Plate Manufacturer
(OP)
Hey Everyone,
Total stab in the dark but any chance someone recognizes this truss plate and can direct me towards a manufacturer. Maybe even some information.
Back story, Central Prairies in Canada. Built in the mid-70s. Some of the trusses (5 locations) the tension member has pulled itself out of the joint. I'm fairly certain it was poor placement of the truss plates during manufacturing but either way my supervisor would like me to at least attempt to find some info on them.
Thanks in advance,
Total stab in the dark but any chance someone recognizes this truss plate and can direct me towards a manufacturer. Maybe even some information.
Back story, Central Prairies in Canada. Built in the mid-70s. Some of the trusses (5 locations) the tension member has pulled itself out of the joint. I'm fairly certain it was poor placement of the truss plates during manufacturing but either way my supervisor would like me to at least attempt to find some info on them.
Thanks in advance,





RE: Truss Plate Manufacturer
Alpine and Mitek are the 2 largest players that still exist in the truss plate market. You might have some luck contacting their engineering departments:
http://www.alpeng.com/index.php?option=com_contact...
http://www.mitek-us.com/about/Locations.aspx
RE: Truss Plate Manufacturer
It's not that imperative it would just be nice if someone had come across these before.
RE: Truss Plate Manufacturer
Identifying the plates is probably a dead end anyhow. I'm highly doubtful that you'd get your hands on information that would allow you to check the design of the plates. As you said, the plate placement and orientation looks terrible. The cut of the diagonal is atypical as well. It wouldn't lend itself to easy plating. It's plywood gusset and glue time.
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Truss Plate Manufacturer
The plywood gusset repair has already been specified and installed at any of the joints that have failed already. The owner of the building was asking about existing capacity of the trusses that do not need repair at this time. He is worried that if the joints are undersized that he will be going down this path again in a couple years.
I basically told him that the capacities of the plates could almost be considered proprietary and as such it is tough for an engineer to come in well after fabrication and give any opinion of structural sufficiency. We can assume that the plates were designed correctly for the anticipated loading however the capacities are highly dependent on plate installation and operating environment.
One way or the other this thread is as solved as it's going to get.