Existing Truss Strength Increase
Existing Truss Strength Increase
(OP)
Has anyone heard of increasing the strength of an existing wood truss by covering it with plywood that is to be glued and nailed to the members?
This is for new construction where a change was made and more strength out of the existing trusses is needed.
This is for new construction where a change was made and more strength out of the existing trusses is needed.





RE: Existing Truss Strength Increase
Never, but never question engineer's judgement
RE: Existing Truss Strength Increase
Basically they applied the sheeting to the entire truss depth (however deep it was). What you are saying is that this is acceptable but you would only count on the increase in the member strength due to the increased chord thickness.
How would make sure the forces were transferred properly between pieces of plywood? This would become critical on the tension chord.
RE: Existing Truss Strength Increase
I might buy into a 10 or even 20% increase but thats about it. What about the extra weight of the plywood??
How much increase do you need?? Many trusses are already over designed and there may be enough "fat" already to cover your concerns.
RE: Existing Truss Strength Increase