Certifications are essential to ensure your warehouse racking system remains safe, stable, and compliant. But what happens when changes are made to the racking, like removing a beam or reconfiguring the rack layout? These adjustments can compromise the system’s integrity and invalidate its certification.
That’s where a pallet rack amendment comes in.
An amendment is a formal engineering update to your racking system’s certification, verifying that any modifications meet safety standards and operational requirements. In this blog, we’ll explain when amendments are required, the risks of skipping them, and how they ensure your racking systems remain safe and compliant after changes.
An amendment to your racking system’s certification is required whenever changes are made that could affect its safety or functionality. Even the smallest changes can affect the system’s load capacity and pose risks. Below is a list of common changes that require an amendment.
Changing beam configurations significantly affects the overall load capacity of each bay.
It may seem that if there is no load on a beam level, the beam can simply be removed. However, this is far from the case. Removing a beam level can significantly reduce the system’s load capacity.
To be more precise, the drop in load capacity is due to load redistribution. Racking systems are designed to distribute weight across multiple beams. When a beam is removed, the weight it previously supported must be redistributed to the remaining beams. This can lead to overloading adjacent beams or uprights, which may not be designed to handle it, as illustrated in Figure 1 below.
Figure 1: Beam removal affects load capacity
Another issue is that it reduces the system’s structural stability. Each beam contributes to the rack's lateral and vertical stability. Removing a beam can reduce the system’s rigidity, making it more susceptible to buckling or collapse under load or external forces, such as forklift impacts. Check out our article on How Changing Beam Positions Affect Rack Load Capacity for even more information.
Furthermore, even changing the beams’ height can significantly affect the load capacity. Beam spacing is a critical factor in the design and load capacity of a racking system. Increasing the beam spacing increases the unsupported length of the vertical uprights, thereby reducing their load-bearing capacity, as demonstrated in Figure 2 below.
The original load distribution calculations become invalid when beam heights are altered, which is why amendments are required not only when a beam is removed but also when it is moved.
Figure 2: Effective Length Method
To get more technical, the vertical uprights’ load-bearing capacity depends on the distance between the beam levels. The farther apart the beams are, the greater the moment on the upright, reducing the rack’s overall load capacity. Check out our full process for obtaining Load Capacity Calculations.
Amendments are crucial when replacing components of a racking system, such as uprights or beams, to ensure the replacement part is structurally adequate and compliant with the original design specifications.
While a replacement beam or upright might appear similar, subtle differences, such as material thickness or steel grade, can significantly impact the load capacity and overall stability of the system. Looking at Figure 3 below, we can see that the uprights look very similar to the naked eye, but they have different load capacities.
Figure 3: Similar uprights with different dimensions. Photo Credit: Unarco.
Another factor is ensuring that beams are compatible with the uprights to which they are attached. Incompatible beams and uprights could greatly reduce the lateral stability of your racking system. Ensuring compatibility through engineering validation is essential to avoid compromising the system's safety and integrity. This is one of many common mistakes in warehouses that could pose a risk to the warehouse environment.
Figure 4: Incompatible beams with an upright
Amendments are needed when environmental or external factors change, as they can affect the safety of a racking system. For example, in earthquake-prone areas, racks must be designed to handle the forces caused by seismic activity.
If a warehouse is reclassified into a seismic zone, an amendment ensures the racks meet updated safety requirements. This might involve recalculating the strength of anchors, bracing, and overall rack stability to prevent collapse during an earthquake.
Learn more about seismic regions through our article, Seismic Forces and Warehouse Pallet Racks, or check out our eBook on Rack Safety in Seismic Zones.
Figure 5: Map of North America seismic regions. Photo Credit: ThoughtCo.
Similarly, moving pallet racks within a warehouse can change the distribution of forces. Shifting racks closer to walls, altering aisle widths, or changing configurations can introduce new risks. Amendments ensure the new setup is safe and compliant with standards.
Getting an amendment after changes to a warehouse racking system offers numerous benefits, improving safety and ensuring compliance with regulations. Here’s why it’s essential:
Updating the racking system ensures that it can properly support loads and maintain its structural integrity. This reduces the risk of accidents, such as racking failures and collapses, that could lead to injuries or fatalities in the workplace. Regular amendments help keep the system secure and safe for all employees handling products.
Our Warehouse Worker Safety Guide provides essential warehouse safety tips to protect employees and boost productivity.
Pallet rack amendments are vital for meeting the safety standards set by regulatory bodies such as OSHA, CSA, and RMI. By ensuring modifications comply with the latest guidelines, you avoid legal issues and potential fines. Compliance with industry standards also reassures clients, partners, and employees that safety is your top priority.
Keeping the racking system up to date and certified with the appropriate amendments helps maintain your insurance coverage. Most insurance providers require evidence that your racking system complies with current safety standards to maintain coverage. Without proper amendments, you risk losing coverage or facing higher premiums in the event of an accident.
By adhering to RMI (Rack Manufacturers Institute) standards, you can be confident that your racking system has been designed, installed, and maintained in accordance with proven safety practices. This helps avoid costly repairs, system failures, or operational disruptions that could occur if the racking system isn’t properly reviewed and amended.
Ultimately, investing in amendments is a proactive measure that helps maintain a safe, efficient, and legally compliant warehouse environment, reducing risks and protecting both workers and the business.
The amendment process is designed to be both thorough and efficient, ensuring that any changes made to your racking system are safe and compliant. Obtaining an amendment involves a few key steps:
Start by measuring and inspecting the racking system for changes. This also involves checking the dimensions of all existing and new uprights and/or beams in the system and ensuring they’re in good condition.
After gathering the data, load capacity calculations are done to verify that the racking system can safely support the required weight after any changes. This ensures the racks remain up to code and that the load distribution is correct for the new configuration.
A qualified rack engineer reviews the design after load capacity calculations are completed. They ensure the changes meet safety standards and confirm that the updated system is stable and compliant with industry regulations (like OSHA, ANSI, or RMI).
Once everything is reviewed and verified, updated documentation is created. This includes a new certificate or approval confirming that the racking system remains safe and compliant with regulations.
These steps are essential for ensuring that any changes to the racking system don’t compromise safety, stability, or compliance. Following this process ensures that the system remains reliable and meets the required standards.
Ensuring your racking system is safe and compliant after making changes is not just a good practice; it’s essential for workplace safety and operational efficiency. Key takeaways include the importance of rack amendments in maintaining stability, preventing costly violations, and safeguarding your employees.
Don’t leave your racking system to chance after making changes. Let our engineering team assist with inspections, calculations, and certifications to keep your warehouse running safely and smoothly. Learn more about our engineering services or speak directly with an expert today.
A pallet rack amendment is a formal engineering update to a racking system’s certification. It verifies that any modifications—such as layout changes or component replacements—still meet safety standards and operational requirements.
A pallet rack amendment is required whenever changes are made that could affect the system’s safety, stability, or load capacity. Even small modifications can introduce risk and invalidate previous calculations.
Yes. Removing a beam redistributes the load to the remaining structure, potentially overloading adjacent beams or uprights and significantly reducing overall load capacity. It can also decrease structural stability, increasing the risk of collapse.
Yes. Changing the beam height alters the spacing between levels, increasing the unsupported length of the uprights and reducing their load-bearing capacity. This invalidates the original load calculations and requires an amendment.
Yes. Replacing components such as beams or uprights requires an amendment to ensure the new parts meet the design specifications. Even similar-looking components can have different material properties that affect load capacity and stability.
Using incompatible beams and uprights can reduce the racking system's lateral stability. Engineering validation is necessary to ensure all components work together safely and maintain structural integrity.
Yes. Changes such as relocating racks, adjusting aisle widths, or operating in seismic zones can alter how forces act on the system. Amendments ensure the updated configuration remains safe and compliant.
Pallet rack amendments help:
The amendment process typically includes:
Amendments ensure that any changes to the racking system do not compromise stability or compliance. Without them, warehouses face increased risks of structural failure, injuries, and regulatory issues.