Deep racking is a storage system that is used in warehouses to increase storage efficiency and density.
The Essential Deep Racking Extension offers a system planning solution for the following types of deep racking:
- Drive-in
- Drive-through
- Pallet-live
- Push-back
- Shuttle
- Mixed
Each type has different characteristics with advantages and disadvantages. For your convenience, we have provided a high-level overview (based on our research) for each type.
Image rendered using the Essential Deep Racking Extension
Drive-in
This is the most common compact racking system and only needs a single access aisle for the forklift. Drive-in compact racking is indicated for warehouses with low material turnover.
Type |
Drive-in |
Principle |
Last in - First out (LiFo) |
Rail Layout |
Single End All Single All Double |
Unit Load Direction |
Long sided only |
Use Case |
Uniform goods in a whole bay (i.e. concrete bags) |
Advantages |
Low costs |
Disadvantages |
High risk of damage |
Drive-through
This type of racking system is similar to Drive-in but loads from one side and unloads from the other. Forklifts can enter from either side.
Type |
Drive-through |
Principle |
First in - First out (FiFo) |
Rail Layout |
All Single only |
Unit Load Direction |
Long sided only |
Use Case |
Uniform goods in a whole bay (i.e. concrete bags) |
Advantages |
Low costs |
Disadvantages |
High risk of damage |
Pallet-live
This system's loading area is at the opposite end of the unloading area. Goods are transported through this space with roller beds that form a rail with an incline.
Type |
Pallet-live |
Principle |
First in - First out (FiFo) |
Rail Layout |
All Single only |
Unit Load Direction |
All |
Use Case |
Uniform goods on every roller track Possible with different heights May use for tour provisions Mixed goods possible for every tour |
Advantages |
Low risk of damage |
Disadvantages |
High costs |
Push-back
In this system, a pallet is loaded from the front and pushes the pallet behind it back one position. The front pallet is removed and during unloading the rear pallets automatically move forward.
Type |
Push-back |
Principle |
Last in - First out (LiFo) |
Rail Layout |
Single End All Single All Double |
Unit Load Direction |
All |
Use Case |
Uniform goods on every roller track |
Advantages |
Low risk of damage |
Disadvantages |
High costs |
Shuttle
This is a high-density compact storage solution that uses powered shuttles to carry loads into the rack. The shuttles are remotely controlled by an operation. The allows for optimum storage space use and reduced workplace accident rates.
Type |
Shuttle |
Principle |
Last in - First out (LiFo) First in - First out (FiFo) |
Rail Layout |
Single End All Single All Double |
Unit Load Direction |
Long sided only |
Use Case |
Uniform goods on every skid except tour provisions Sensitive goods as clearances can be held by shuttle |
Advantages |
Pick time scalable |
Disadvantages |
Expensive with big number of shuttles |
Mixed
This is a high-density compact storage solution that combines types of racking to optimize storage.
Type |
Mixed |
Principle |
Variable, may be Pallet Live Rail or Drive in Rail on lower levels, and Selective Beam, Push Back Rail, or Shuttle on upper levels |
Rail Layout |
When Drive In Rail is selected for the Lower Rail: Single end All Single All Double When Pallet Live Rail is selected for the Lower Rail: All Single |
Unit Load Direction |
Long sided only |
Use Case |
Maximizing space when there is need for several storage applications |
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