Just FYI the Triscuit or Stress skin platform is a 4' square design to be lighter and smaller for storage. I've seen in other threads where they have built different sizes and configuration
I want to switch to the triscuit platforms and I've seen that there are many ways to do this:
Yale 5/4 lumber & 5/8 plywood, Penn State 1 inch thick extruded polystyrene with 5/8 OSB & Texas metal frame design and several other variations.
This is a small community theatre and many times there...