New pallet racking can increase storage, but the right system depends on the loads it will hold, how staff retrieve stock and what the warehouse can safely accommodate. Start with pallet and inventory data, handling equipment, aisle and staging requirements, and the building’s constraints. Then compare rack types and request a design based on the actual operating plan—not a headline bay count. A well-specified layout can support efficient picking and future changes; a poorly matched one may add travel, congestion or safety risks. Before ordering, confirm the design assumptions, site requirements, installation scope and handover process with qualified suppliers and professionals.
Rack capacity is specific to a configuration. Upright frames, beams, bay dimensions, storage levels and the way loads are placed all affect what a system can safely support. A quoted capacity should therefore relate to the proposed layout and load arrangement, rather than being treated as a general rating for every part of a rack.
Build a representative load profile before seeking a design. Include the heaviest and tallest loaded pallets, not only the most common ones, and record:
Ask the designer to state which pallet and load assumptions the proposal uses. If loads vary, explain how they will be segregated or identified so staff can put them in an appropriate location. Do not assume that a rack can take a heavier load simply because its beams look similar to another installation. Capacity information must match the installed configuration, and any uncertainty should be resolved before the system is loaded.
Consider future needs as well as current stock. That does not mean buying the largest possible system. Instead, identify likely changes—such as a wider product range, different pallet sizes or changed order patterns—and ask which parts of the layout can adapt without compromising capacity or access.
Map how goods move from receiving to put-away, storage, replenishment, picking and dispatch. Note where pallets are checked, staged or consolidated, and where staff and forklifts share space. A rack plan can provide many positions on paper yet perform poorly if it places replenishment traffic across a busy picking route or leaves too little usable staging space.
Use order and inventory information to identify the access pattern each area needs. Fast-moving items may need convenient retrieval and replenishment; slower-moving stock may tolerate less direct access. If products require a particular rotation method, such as first-in, first-out, make sure the proposed system and operating process can support it. Do not assume a storage system will enforce rotation automatically.
Choose the racking and aisle arrangement around the handling equipment that will operate there. Confirm the equipment’s load capacity at the required lift height, operating and turning needs, reach, mast arrangement and manufacturer-stated aisle requirements. Aisle suitability should be checked against the actual truck and task, not estimated from a general rule. Allow for safe manoeuvring, placing and retrieving loads, and account for any pedestrian routes or other equipment.
Also check the whole building plan. Columns, doors, dock positions, floor levels, lights, services, exits and fire-protection equipment can affect rack placement and usable height. Coordinate these interfaces early; moving a proposed row after design may affect travel routes, storage capacity or installation work.
Different rack types trade direct access for storage density or throughput. The suitable option depends on product mix, pallet quantities, rotation needs, handling equipment and the way replenishment will work.
| System | Access and storage pattern | Can suit | Limit to consider |
|---|---|---|---|
| Selective racking | Direct access to each pallet position | Mixed SKUs, frequent selection and varied demand | Requires aisles for access, which can limit storage density |
| Double-deep racking | Pallets stored two positions deep; front pallets affect access to rear pallets | Several pallets of the same product and suitable reach equipment | Reduced selectivity and a need to manage access to rear positions |
| Drive-in racking | Forklifts enter storage lanes; pallets are stored in depth | Higher quantities of fewer product lines where lane access suits the operation | Less direct access; the loading and retrieval sequence must be planned |
| Push-back racking | Pallets are stored in depth on a moving system and retrieved from the access side | Multiple pallets per product where lane-based access is practical | Access is less selective than individual pallet positions; equipment and operating procedures matter |
| Pallet-flow racking | Pallets move through a lane from loading side toward retrieval side | High-volume lanes where planned stock rotation and replenishment are important | Requires compatible pallets, suitable loads and a design matched to the goods and operating method |
Selective racking is often the more straightforward choice when staff need to reach many different SKUs independently. Denser systems can make better use of a constrained storage area, but they are not automatically more efficient: fewer direct access points can mean extra handling, more complex replenishment or restrictions on which product belongs in each lane.
For systems that store pallets several positions deep, model the expected pallet quantities and retrieval sequence by product. Confirm how the selected handling equipment will load and retrieve them. If stock rotation is essential, specify the required method and test that the rack design, inventory controls and staff procedures all support it.
Once the storage method is chosen, the design needs to define the complete layout. Check the number of bays and levels, the load assigned to each position, usable clear heights, aisle arrangement and pallet orientation. Confirm that proposed positions can be reached with the planned equipment and that loads can be placed without striking the rack or adjacent stock.
Ask how the design accounts for floor conditions, anchors and the building structure. A warehouse floor that appears level may still need assessment for the proposed loads and installation. If the rack will be fixed to a slab or connected to other structures, the design and installation details should specify what is required rather than leaving assumptions unresolved.
For a New Zealand warehouse, raise seismic design and applicable local requirements with a qualified structural professional as part of the project. Also coordinate the layout with fire protection, lighting, exits and other building services. Requirements depend on the site and the proposed arrangement, so do not rely on a generic aisle or clearance figure.
Include suitable protection and accessories where the risk assessment calls for them. Examples may include end-of-row protection, column protection, pallet supports, backstops or mesh. Each item must suit the rack design and the stored loads; an accessory is not a substitute for correct loading or a sound layout. Keep pedestrian routes visibly separate from equipment movements where the operation requires them.
Compare proposals on a common basis. One quote may include design, delivery and installation while another may cover only the rack components. A low equipment price can leave significant work—such as floor assessment, protection, service changes or installation—outside the scope.
Ask each supplier to provide a clear scope covering:
Compare the total project cost, not just the rack supply figure. Installation, handling-equipment changes, building work, safety measures, disruption to warehouse operations and future inspection or maintenance arrangements can all affect the investment. Ask suppliers to identify assumptions and exclusions in writing, then resolve differences before comparing totals.
New equipment can make it easier to specify a coherent layout and obtain documentation for the intended configuration, but “new” does not by itself guarantee a suitable or safe installation. The design still needs to fit the site and operation, and components must be installed and used as specified.
Agree the sequence for installation before work begins, especially if the warehouse will remain operational. Define the work area, access restrictions and how stock or equipment will be kept clear. The installation team should work to the approved design and identify any site conditions that require a change rather than improvising on site.
After handover, keep the installed configuration consistent with its design. Do not move beams, remove components, add levels or alter connections without approval from a qualified designer or supplier. Changes can affect capacity even when they appear minor.
Set a routine for checking the racking and acting on damage. Staff should report impacts, visibly distorted components, loose or missing parts, and other changes that could affect safe use. If a rack is damaged, restrict access to the affected area and arrange an assessment; do not straighten, weld or replace parts with whatever is available. Establish inspection frequency and repair procedures with reference to the applicable requirements and supplier or engineer guidance.
Choose based on how often staff need direct access to different products, the number of pallets held per SKU and the handling method. Selective racking prioritises access; systems that store pallets in depth can increase density but restrict access or add handling steps. Model the operating sequence before deciding.
Possibly, but visual similarity does not establish that new and existing components are compatible or that the combined layout has adequate capacity. Have the configuration, connections, loads, floor and relevant design information assessed before adding or joining equipment.
Provide pallet dimensions and loaded weights, product and SKU patterns, expected quantities, required rotation, handling-equipment details and a measured site plan. Include building constraints, pedestrian routes, staging needs and any plans that could change the storage mix.
No. A denser layout may provide more positions in a given area, but it can also change access, replenishment, handling-equipment and labour requirements. Compare the full operating arrangement and project scope, not storage density alone.
Not without checking the change against the design. Moving beams can alter the rack’s capacity and permitted loading arrangement. Ask the supplier or a qualified designer to approve changes and update any capacity information before the modified positions are used.
Before committing to new pallet racking, confirm that the load data, storage method, equipment, building constraints and safety requirements are reflected in the design and quotation. The best fit is the system that stores the required inventory while supporting practical access, replenishment and safe operation. Resolve assumptions before installation, then preserve the approved configuration through clear staff procedures and regular checks.
