Hello, I have been given a project in which I have to design a ramp powered by a motor and gear-train. For the actual "deck" which the vehicles will roll on I have selected two 5mm Al 6061 T6 plates which are bolted together. The bottom plate will have 4 cut-outs taken from it and act as a frame (Drawn up on inventor and stress simulated and proves to be suitable). The maximum load the ramp must take is 100kg. How can I work out the load taken by the top plate and the load taken by the bottom frame plate? We haven't had to do anything like this in college yet. Dimensions: Top plate - 2.5m long x 1.25 wide x 0.005 thick Frame - Same as above but has 4, 1.175m long x 0.55m wide sections removed. This problem is holding up the entire project as most everything else is sorted out and easy enough. Pic attached below. http://imgur.com/w5B2j The black lines visible are the lines of the frame underneath the main top plate. Max deflection according to inventor is 17mm.