How to Optimization Pallet Storage and Picking

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World-Class Warehousing and Material Handling

Figure 5.16 Double-deep pallet rack accessed via a double-deep reach truck.

One drawback of drive-in racks is the reduction in forklift or reach truck travel speed needed for safe navigation within the confines of the rack construction. Another drawback is the honeycombing losses because no more than one SKU should be housed in a lane. As a result, drive-in racks are best used for slow- to medium-velocity SKUs with 10 or more pallets on hand. As was the case with block stacking, loads should are retrieved with a LIFO discipline and with a retrieval approach that frees up each lane as quickly as possible. Drive-through racks are merely drive-in racks that are accessible from both sides of the rack. These racks are often used for staging loads in a flow-through fashion where a pallet is loaded at one end and retrieved at the other end. The same considerations for drive-in racks apply to drive through racks.

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