In accordance with DOT regulations and standard shipping practices, Hydra-Eze® Hydraulic Doors will be one piece when possible. If the system dimensions will not permit a one piece design, a fold over design will be utilized. The fold over design implements a sleeved bolt together system with hinges opposing the bolts to ease field assembly. Simply unfold the system, place provided bolts through the sleeved holes in the center beam, and tighten. Multiple section systems will only be utilized when Hydraulic Door dimensions exceed DOT parameters even with a fold over design. Specifications for field assembly and welding will be provided with each approved design. As required, integral trusses shall be mounted to the exterior of the horizontal framing members.