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- Aisle Length or Width- The dimension between two rows of rack. This length can vary for each rack application and depends on several factors including, but not limited to; the type of forklift or equipment you use to store and pick products, the size of your warehouse, and the depth of your rack.
- Anchors- Hardware that is required for most storage rack installations. Type and details of the anchor bolt are usually determined by the seismic engineer.
- Baseplate or Footplate- A component of the frame or upright that is welded or bolted to the columns. It will typically have 1-4 holes that are used as a vessel to anchor the frame to the concrete of your warehouse floor.
- Beams- A common rack component that has welded connectors that are either bolted or locked in place on the frame with pins. Two beams are typically required to form storage level for select rack.
- Beam Length- A reference to the length of a rack beam. The length of a rack is calculated by the amount space it will allow once the beam is connected to a frame therefore you do not measure the connectors of the beam, only the clear space between each connector.
- Beam Levels- A reference to the number of storage rack beam levels an individual storage rack bay or configurations has.
- Commodity - A reference to the type of product you store in your warehouse. The type of commodity is classified into several different classes and is a factor used to assess how high you can store in your warehouse.
- Configurations/Elevations- A reference to the individual rack profiles you have in your system that directly correlates to elevations of your beam levels. For example, a storage rack system might have a total of 45 bays, which are constructed with 2 different configurations or elevations. Configuration or elevation #1 may have 2 beam levels, while configuration or elevation #2 has 4 beam levels.
- Deflection- A condition that occurs to storage rack beams that are loaded beyond their capacity. Beams should not deflect more than a 1/4" per 48" of beam length.
- Depth of Rack- A reference to the depth of the frames in your rack system. Typical is 42", but frame depth can vary with every system or design.
- Egress - Path of travel to exits in case of emergency. Every warehouse with storage rack installed should have an egress plan and a known path of travel from each location in the rack system to ensure that your team can safely vacate the premises in case of emergency.
- End of Aisle or Column Protection- A rack accessory that is used to protect the lower portion of the rack columns from forklift damage.
- Flue Space - Allowable space between stored pallets for the flow of sprinkler water in case of fire. Typical design calls for at least 3" of transverse and 6" of longitudinal flue space.
- Frame or Upright- A common storage rack component that has two columns welded together with horizontal and diagonal bracing. Each column will also have a footplate or base plate welded or bolted to it that allows it to be anchored to the concrete floor of your warehouse.
- High Piled Storage- Any storage rack that is designed to have a top of storage of over 12' is considered high pile storage. Some factors that are considered when calculating the maximum storage height for your products are the commodity classification of your products, sprinkler system design in the warehouse, and how dense your storage array is. Also considered is flue space maintenance.
- Lift Off- Referencing the required amount of space for a pallet to be safely lifted off a rack beam if there is another beam level above it. Typically pallets will require at least 4" of lift off space that is measured from the top of the load on the pallet to the bottom of the next beam level.
- Overhang- The number of inches a pallet overhangs on the storage rack beams, used to calculate the optimal frame depth. Pallets should over hang the beams by 3" in the front and rear of the configuration, therefore, 6" - Pallet Depth = Required Frame Depth. Standard pallets are 48" deep, minus the 6" total overhang required= 42" deep frame.
- Pallet Positions- A reference to the number of pallets an individual rack bay or a storage rack system can accommodate. For example, a 2-beam level configuration that is 96" wide can have up to 6 pallet positions.
- Pallet Support- Steel or wood accessory that is used to help stabilize pallet storage. Typically they are bolted or screwed into the rack beams and two are required per pallet positions.
- Rack Bay- A reference to a constructed individual unit of storage rack. For example, a rack system could have 3 rows of 15 rack bays each, giving you a total of 45 rack bays.
- Row Spacers: A steel storage rack accessory that is typically used for alignment purposes and to help maintain a consistent flue space. Sometimes, the seismic engineering will require structural row spacers to help achieve a desired capacity.
- Seismic or Structural Engineering- A licensed engineer that is almost always required to permit storage rack in most jurisdictions. A seismic engineer will consider factors such as load capacities, type and strength of the storage rack materials, and location to seismically active areas.
- Tunnel Bay- Rack layouts with long rows of rack may sometimes call for a tunnel bay in the middle of the row to allow users to navigate in the middle of an aisle without having to travel to the very end of each aisle.
- Wire Decks- A wire mesh deck installed on storage rack beams. Typically it's used to store products without the use of a pallet, but they can be designed to help stabilize pallet storage.
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