There are three parts to the roof truss that you have to know.
Gusset roof truss.
The thickness of the material used for the gusset also affects the span rating that is how far apart the trusses can be spaced along the roof.
Then there is the top chord or rafters that are angled to make the roof pitch.
Truss factories use spiked metal gusset plates with their size shape and location specified as part of the engineering.
The plates are sunk into the wood at connection points with heavy rollers or a hydraulic press to create an extremely stable connection.
When damaged or altered this can effect structural integrity of th e roof system.
These trusses are typically prefabricated and delivered to a job site to be erected as a unit.
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Roof trusses are engineered components.
Finally there are the gussets that hold the framed truss together.
Localized damage to one or two trusses will typically not result in structural failure of the roof system but could cause the roof or ceiling to sag.
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When it comes to using osb or plywood for gussets vogt says that osb is more commonly used.
Nailed plywood gusset roof trusses author.
Gusset plates are used to secure the connections between the individual truss components.
Most new homes are built with trusses for roof framing.
The bottom chord which is the bottom of the framed truss.
As an alternative you can make your own gusset plates out of plywood.
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Hammer each gusset plate into the wood until the teeth are fully driven in and the plate sits flush against the lumber.
Fashion your own set of plywood gusset plates by cutting thick sheets of plywood to fit over each site where one joist meets another.