While dock boards and dock plates are similar products, they have defining characteristics that make one or the other more appropriate for your application. That means selecting the proper loading dock equipment can be a bit more challenging.
In general, dock boards are more substantial to handle higher capacity loads, while dock plates are better suited for lower-capacity equipment. And while chains can be used as a lifting device for either piece of equipment, dock board can also rely on lift loops, while nylon straps are the preferred alternate lifting method for dock plates. Both dock plates and dock boards are made from either steel or aluminum depending on the specific application.
Keeping those differences in mind, let’s determine which piece of equipment you’ll need.
Step 1: Board or Plate
If you’ll be using a fork truck, you’ll need to go with a dock board that can handle higher capacity loads. If you’ll be using pallet jack, dollie or cart to carry loads from a truck, you should go with a dock plate that’s suitable for lower capacities.
Step 2: Capacity
To determine capacity needed for either your board or plate, use this formula:
Weight + Load x 0.9 = Capacity
So for a forklift of 11,000 lbs. and max load of 4,000 lbs., the resulting capacity would be 13,500 lbs.:
11,000 + 4,000 x 0.9 = 13,500
Step 3: Length
The necessary length of your dock board or dock plate is determined by the maximum amount height difference between the dock height and the floor height of the trailer(s) being serviced.
Truck Height – Dock Height = Max Height Difference
So if the Truck Height is 54 inches and the Dock Height is 48 inches, the Max Height Difference is +6 inches.
From here, use the table below to determine the dock board or dock plate length.
But what if the Truck Height is lower than the Dock Height? In that case, you have two options.
- The dock board (with chains instead of lift loops) or dock plate must be used in reverse, with the board or plate will be in the truck and the lip on the dock.
- Raise the truck bed with wheel risers.
Step 4: Width
Copperloy recommends a minimum width of 60 inches for dock boards that will be used with forklifts, and a width of 54 inches for dock plates used with pallet trucks.
Also remember that safety curbs take up 6 to 8 inches of usable space depending on the dock board.
Still have questions? We’re here to help you choose the right loading dock equipment. Contact us today.