Loading a rack with a forklift requires a design that allows the load to be left on the rack and the forklift forks to be removed easily. Below are two photos each of forklift loadable and non-forklift loadable racks. The advantage of the non-forklift loadable rack is the secondard long bar on top that makes it easy to tie ladders and other cargo the the side of the rack for security.
Non-Forklift Loadable with secondary bar on top of side rail
Non-Forklift Loadable Rack. Notice the center bars are even with the long bar
Forklift Loadable Rack. Notice no upper bar on side and looks like goal posts. You can see the load bar over the bed is higher than the side bar to allow the forklift forks to leave the load and exit
Forklift Loadable Rack. Notice the load cross bars over bed are higher than the long bar so forklift forks can exit after depositing load
Image:
Rack-Straps® Tie Downs
Here is a visual demonstration of how these work: Rack-Straps