Specifications include, but are not limited to: Overall width not to exceed 79".; Overall length as specified on bid form.; Body frame to be all steel welded into a single unit. Bulkhead may bolt onto body frame.; Long sills shall be 4", 6.7# structural steel and gusseted front, rear and at every other cross sill.; Cross sills shall be 12 gauge high strength {50,000psi} roll formed steel spaced on minimum 18" centers for maximum strength and gusseted throughout to long sills and welded to side rails.; Other variations of long sills and cross sills will be accepted if strength is equal to or greater than those specified.; Floor, rear and sides (rub rails) shall be a minimum of 12 gauge high strength, {50,000psi} roll formed steel tread plate with reinforced internal stake pockets sized to accept 2”x4” lumber or steel stake racks.; Floor shall be non-skid steel tread plate (minimum 1/8”).;