Another FFEM project.
BRIAN and CASEY on the south end
My two nephews sitting on top of the south end. When assembling, bend the top sheets of plywood first. Then, after all the top sheets are bent and the sections are bolted together, bend the plywood on the bottom ramp sections.
When you bend the top sheets, lift the ramp section onto its back. In this pic, we finished bending the top sheets, bolted all 4 sections together, and then bent the bottom sheets.