Pallet racking is a storage system of vertical frames and horizontal beams used to store palletized goods at multiple levels within a warehouse, maximizing use of available clear height. The specific racking configuration chosen depends on inventory turnover rate, SKU variety, forklift access requirements, and the building's clear height and floor load capacity.
Common pallet racking types
| Racking type | Best suited for |
|---|---|
| Selective pallet racking | High SKU variety, direct access to every pallet |
| Drive-in racking | High-density storage of fewer SKUs, lower turnover |
| Push-back racking | Moderate density with better selectivity than drive-in |
| Pallet flow racking | High-turnover FIFO (first-in-first-out) operations |
How racking choice relates to building specs
Higher clear height allows more racking levels, directly increasing storage density per square foot of leased space — which is why clear height commands a rent premium. Floor load capacity must be verified against the racking system's point loads, since dense, tall racking configurations concentrate significant weight on relatively small floor areas at each rack leg.
Racking choice also interacts with fire protection — certain high-density configurations or commodity types may require in-rack sprinklers even in buildings with an ESFR system, depending on storage height and product classification.
What to watch for before committing
Floor load capacity match
Confirm the building's floor load rating, including point load capacity, supports your specific racking configuration and storage height.
Clear height utilization
Calculate actual usable racking levels based on verified clear height, accounting for sprinkler and lighting obstructions.
Fire code and sprinkler interaction
Verify whether your intended racking density and commodity type requires additional in-rack sprinklers beyond the building's existing ESFR system.
Aisle width and forklift compatibility
Confirm racking aisle widths match your forklift or material handling equipment turning radius requirements.
SKU velocity and layout fit
Match racking type to your actual inventory turnover pattern — high-density racking sacrifices selectivity that fast-moving SKUs often need.
Installation and permit requirements
Confirm whether racking installation requires local building permits, particularly for high-density or seismic-zone installations.
When you need to know this
- Maximizing storage density — choosing the racking configuration that best uses available clear height and floor space
- High SKU variety operations — selecting racking that provides direct access to a wide range of products
- High-turnover distribution — using flow racking systems that support fast inventory cycling
- Evaluating a building's storage potential — calculating achievable pallet positions based on verified clear height and floor load capacity
Frequently asked questions
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