Blackfoot 4x8 Table Top Design?

[j.steensen]

Having trouble figuring out the most economic method for building the top of the BlackFoot table...it needs to be 2 layers of 10' x 52" x 3/4 birch ply or MDF (haven't decided on material yet...leaning towards birch ply.) with a sandwich of 2x4 slotted together to form the torsion box.

My issue is with how to build the ply...since ply is 4x8, I really don't want to have to cut three panels from three separate sheets on the bottom.

[vtx1029]

Your building center should be able to special order 5 x 5, 4x10 and maybe even 5x10 ply...