Originally Posted by travelover
I admit it has been about 30 years since engineering school. Can you please explain why this is an issue for this homeowner?
Travelover, I wanted to ask this my self, but after looking at the pics I would think that the weakest part of the boxed area is that all load or flex would be at the joints of the ply. If the joints would of been staggered, like we do when installing plywood decking, the load point would be changed to two locations instead of one, or spread out over the joist.
But then I'm just a roofer...