Cantilever racking is widely used for storing long and bulky materials such as lumber, pipes, steel bars, profiles, and panels. However, incorrect selection, loading practices, or installation methods can reduce storage efficiency and create unnecessary safety risks.
Based on our experience with real warehouse projects, we have identified five common cantilever racking mistakes – and how to avoid them.
1. Using Standard Pallet Racking for Long Materials
Standard pallet racking is designed for palletized goods, not long and irregular loads. When lumber, pipes, or steel profiles are placed across pallet rack beams, the load may not be distributed as intended, creating uneven stress on the structure.
Long materials extending beyond the rack can also create safety risks. They may be impacted by forklifts during operation, causing the load to shift or fall.
How to avoid it
Use a cantilever racking system designed specifically for long materials. Its open-front design allows goods to be stored directly on cantilever arms, providing easier access, better load distribution, and safer handling.
2. Overloading Beyond the Rated Capacity
Every cantilever racking has a designed load capacity based on factors such as arm length, column height, material grade, and load distribution.
Continuous overloading can cause arm deflection, permanent deformation, and reduced structural safety margins. In severe cases, damage may occur at critical connection points.
How to avoid it
Always operate within the specified load limits. Make sure warehouse operators understand load capacity labels and inspect the rack regularly for visible deformation or damage. Any damaged components should be removed from service until properly assessed.
3. Placing Heavy Loads at the End of the Arms
Cantilever racks work based on a lever principle. The farther a load is positioned from the column, the greater the force applied to the rack structure.
A common mistake is placing heavy materials at the outer end of the arms while leaving the area close to the column unused. Even when the total weight is within the rated capacity, incorrect load positioning can increase structural stress.
How to avoid it
Place heavier materials closer to the column whenever possible. Distribute loads evenly and train operators on proper loading methods to maintain rack stability.
4. Using Indoor Powder-Coated Racks Outdoors
Powder-coated cantilever racks are suitable for many indoor applications, but they are not always suitable for outdoor environments.
When indoor racks are exposed to rain, humidity, or changing weather conditions, corrosion may develop at welds, joints, and other hidden areas. Over time, this can affect the structural performance of the rack.
How to avoid it
For outdoor storage, choose cantilever racks with appropriate corrosion protection, such as hot-dip galvanizing. Regular inspections and protective measures, such as adding a roof canopy, can further extend service life.
5. Improper Installation or Insufficient Floor Anchoring
Cantilever racks rely on proper installation and anchoring to maintain stability during daily operations. Simply placing a rack against a wall or relying on its own weight is not an alternative to proper anchoring.
Unsecured racks may become unstable during forklift loading and unloading, increasing operational risks. Improper installation may also affect safety compliance and insurance assessments.
How to avoid it
Install cantilever racks according to the supplier’s engineering requirements and use the specified floor anchors. Before installation, provide warehouse drawings and operating conditions so the layout and anchoring requirements can be properly reviewed.
