Double Deep Pallet Racking
Although not a truly selective system, Double Deep Racking offers many companies a cost effective method of bulk storage. Access and stock rotation is compromised compared to Selective Pallet Racking,
However cube utilisation is much higher. Specially designed forklifts use a variety of doubledeep reach mechanisms to allow easy placement and retrieval of pallets.
Storing pallets two-deep for better capacity:
- Double deep racking stores two pallets deep in a single entry rack or four pallets deep in a double entry rack.
- This system requires the use of a special reach fork lift truck with either dual pantograph or sliding fork attachments.
- Double deep racking improves storage density with fewer aisles and more storage locations. This reduces the aisle to rack ratio but also reduces selectivity (FIFO).
- Truck lift heights are limited by load, to about 9 metres.
- The upper levels can be fitted with front to back guide rails to assist the operator to locate and place a pallet at height. The bottom beam must be sufficiently clear of the ground to allow the reach trucks legs to pass under it.
Features:
- Storage density increased as rack aisle ratio changes from selective racking.
- 50% immediate accessibility with reasonable stock rotation.
- Good use of all available locations, typically 90%.
- Safe and secure handling with the bottom pallet usually off the ground.
- Ability to use double deep handling equipment for other tasks.
- Best used when each SKU has several pallets.
Advantages:
- Greater use of available headroom
- Good access to 50% stock locations
- Enables stock rotation
- Efficient in operation
- Relatively low cost racking system
- 40% increase in storage capacity
Average of locations used - efficiency:
90%
Immediate access to stored product:
50%
Stock Rotation:
Average
Floor Utilisation:
60%
