[jacquesm]

That all depends on whether the underlying surface is still perfectly flat around the perimeter. If it is not then you get local stress variations that can lead to catastrophic failure.

The seams between the panels are likely also not designed to be loaded that way.

Just the asymmetrical load on the structure could do the trick at a relatively small angle because it might cause the structure to get compressed against something bordering it. This is not a trivial engineering project.