When installing pallet racking systems, one critical safety and operational consideration is the distance between the racking and the wall. This space is known as the “stand-off distance” or “flue space.” Proper spacing not only ensures compliance with safety standards but also improves access, airflow, and fire safety.
Recommended Clearance from Walls
According to general industry guidelines and standards such as those from the Rack Manufacturers Institute (RMI) and NFPA (National Fire Protection Association), pallet racks should typically be placed at least 6 inches (150 mm) away from the wall. This clearance is important for several reasons:
Fire Safety and Sprinkler Efficiency
Adequate spacing allows sprinkler systems to function properly in case of a fire. When racks are too close to the wall, water flow can be obstructed, reducing the effectiveness of the sprinklers.
Inspection and Maintenance Access
The space allows warehouse staff to inspect the rear of the racks for damage, missing components, or misalignment. It also makes cleaning and pest control easier.
Structural Safety
Racks placed directly against the wall can exert pressure on the wall, especially when heavily loaded. This can compromise the integrity of both the rack and the wall.
Airflow and Ventilation
Warehouses often require proper airflow to regulate temperature and humidity. Gaps between the wall and the rack contribute to better air circulation.
Avoiding Damage
Forklifts and pallet loads can easily bump or scrape against racks that are too close to walls. The extra space helps avoid accidental impact during loading and unloading.
In summary, always maintain at least 6 inches of clearance between pallet racking and the wall, unless otherwise specified by local building codes or fire regulations. This spacing promotes warehouse safety, efficiency, and longevity of your storage systems.
Post time: Jun-03-2025