What is the stack height limit for outdoor pallet storage?

• A. 10 pallets high
• B. 15 pallets high
• C. 20 pallets high
• D. 5 ft high

Answer: (C)

Safe stacking height for outdoor pallet storage is limited to keep stacks stable, reduce the risk of toppling in wind or during handling, and ensure forklift access to the pallets. Twenty pallets high is the standard ceiling because it balances storage efficiency with safety: a stack this tall remains manageable, less prone to tipping, and easier to inspect and retrieve from the bottom without overreaching or crowding the area.

Choosing a lower limit, like ten or fifteen pallets, would underutilize space, while using feet as a measure (five feet) mixes units and doesn’t align with the common policy of counting pallets to define height. The facility often uses the number of pallets as the reference, making twenty pallets the correct maximum. Always follow the site-specific SOP, but twenty pallets high is the typical limit for outdoor pallet storage.