All 3 platforms unfolded are about 97 inches by 35 5/8 inches
(35 inches per platform and 27 for the middle part)
The ramps are 35 inches by 35 inches each.
The material is alluminum and the hinges are steel.
The holes take out a lottt of weight.. so the robot is not overweight. & We are in the 4 foot category
Oh & ill post how heavy they are tomorrow.. because I dont remember right now. There's also an arm (which will add weight) and heavy tank treads.
http://img62.imageshack.us/img62/5362/phot0023ob5.jpg