Establish your cantilever arms under the intended load to prevent deflection, as this can cause damage to the product itself and has potentially undesirable side pressure on the cantilever arms.
To test your proposed columns spacing, place blocks or dunnage on the shop floor using the spacing proposed for the arms. Lower your product onto the blocks and evaluate the deflection. Adjust the width between the blocks until minimize the required arms while minimizing the deflection.
If you are intending on a longer row of connected columns be mindful of leaving sufficient space between your adjacent loads so you can safely load the racks with your forklift.
- How to determine the right Cantilever arm length. The Cantilever Arm Length should always equal the product load depth.
- Define the cantilever column height.
First consider the clear height in your building. Then make sure to check the lift height, clearance height, and lift weight capacity of your forklift. Depending on the cantilever style you will also need to factor in the height of the steel cantilever base (typically 6-12 inches). This base is usually considered your lowest level of storage.
Taking into account the height dimension of your load plus room to lift the load into place (4-12″), plus the height of the cantilever arm you will establish the elevation of each shelf. For safety sake you should design your column height to be taller than your top shelf to prevent your loads from being pushed off of the back of the shelf level.
- Specifying your cantilever arm load capacity
Divide the “Load” weight and divide that by the number of arms it takes to support the load without any deflection assuming a uniformly distributed load. Uneven loading will signficantly reduce the Cantilever arm capacity and introduce potentially undesired pressures in your cantilever system.