Common Pallet Patterns, Their Load Characteristics, And When To Use Them

Pallet Pattern refers to the physical arrangement used to position cases on each layer of a pallet. Different layer layouts create distinct mechanical behaviors: strength, resistance to shifting, forklift liftability, and how the pallet stacks in a trailer.

This article profiles the most widely used pallet patterns, explains their load characteristics, and gives practical rules of thumb for choosing one based on product, packaging, and distribution needs. Use these profiles to match a pattern to the actual constraints of your handling equipment, transport mode, and destination requirements.

Column Stack (Straight Stack)

In a column stack, cases align vertically and horizontally so corners stack directly above one another. This pattern is fast to build and maximizes the number of cases per layer for square or regular cases.

• Strength: Good vertical load support when cases are strong; poor resistance to lateral movement.
• Use When: Cases are crush-resistant, shipments are warehouse-to-warehouse with minimal handling, and throughput speed matters.
• Trade-off: Less interlock means higher reliance on stretch-wrap and banding to prevent shifting during transit.

Brick Or Offset Pattern

Brick (or stretcher) patterns offset each case from those below, distributing weight across more case edges. This increases lateral stability and resistance to shear forces during transport.

• Strength: Better lateral stability and load distribution; slightly fewer cases per layer.
• Use When: Cartons are moderately crushable, mixed pallet loads occur, or the load will see significant vibration and corner impacts.
• Trade-off: Slightly slower to build but reduces damage risk compared with column stacks.

Interlocked/Pinwheel Pattern

Interlocked patterns rotate and interleave cases at the corners to create a mechanical bond between cases and layers. Pinwheel variants place rotated cases at corners to resist shear on all axes.

• Strength: High resistance to lateral and diagonal movement; excellent for loads requiring minimal external containment.
• Use When: Export shipments, long-haul trucking, or when minimal stretch-wrap is preferred.
• Trade-off: More labor and planning; may reduce the total number of cases per pallet compared to column stacks.

Mixed-SKU And Layered Patterns

Mixed-SKU patterns deliberately combine different case sizes to create tighter void fill and a more uniform overall layer. Layered patterns stack repeated layer types to balance weight and height constraints.

• Strength: Can be very stable if designed to eliminate large voids and maintain a flat top for slip-sheeting.
• Use When: Kitting, retail mixed-packs, or when maximizing cube utilization with different carton sizes.
• Trade-off: Higher planning effort and WMS complexity to store pattern templates for each mix.

Choosing A Pattern: Practical Criteria

When selecting a pattern, evaluate these factors in order:

• Case Strength: If cartons are weak, prefer interlocked or brick patterns to spread compressive loads.
• Transport Mode: Airfreight prioritizes weight and compactness; ocean and long-haul trucking prioritize stability.
• Handling Steps: More transfers mean higher lateral forces — favor interlock.
• Trailer And Warehouse Geometry: Choose patterns that produce pallet heights and footprints matching racking and trailer planning constraints.

Testing Patterns

Run quick lab or dock trials: build three pallets using candidate patterns, measure build time, total pallet height, and inspect after a prescribed vibration or simulated handling cycle, or perform a simple push test for lateral movement. Record damages and settling after a 24-hour rest period.

Packaging And Environmental Considerations

Pallet pattern choice intersects with packaging and sustainability goals. A more stable pattern may require less stretch wrap and banding; however, it may also reduce pallet cube efficiency, increasing transport emissions. Balance load protection against cube optimization and material usage, and consult carriers or export rules where applicable.

In short, the Pallet Pattern you choose should reflect case strength, handling frequency, and transport mode. Use column stacks for speed with strong cases, brick for better lateral stability, and interlocked patterns when long-haul or export stability is essential.