Longspan shelving sits in a useful gap: stronger and wider than ordinary boltless shelving, but lighter and more flexible than full pallet racking. For hand-loaded stock that's too bulky or heavy for small-parts shelving but doesn't justify a forklift, it's often the right answer. This guide explains what longspan shelving is, how it differs from racking and standard shelving, the specifications that matter, and how to choose and lay out a system.
What is longspan shelving?
Longspan shelving is a heavy-duty boltless shelving system built on upright frames and long horizontal beams, with shelf panels spanning between them. The "longspan" name refers to the wide beam span — typically 900mm to 1,800mm between uprights — which gives generous, uninterrupted shelf widths without a leg in the middle. Shelves are usually chipboard, steel or mesh, and the whole system assembles without bolts, so it's quick to build and easy to reconfigure as your stock changes.
It's designed for hand loading: stock is placed and picked manually rather than by forklift, which makes it ideal for stockrooms, workshops, archives, retail back-of-house and parts stores.
Longspan shelving vs pallet racking vs standard shelving
Standard boltless shelving handles light, small items — typically tens of kilograms per shelf — on narrow bays. Longspan shelving steps up to medium and heavy hand-loaded goods, with wider bays and higher per-shelf capacities (commonly a few hundred kilograms). Pallet racking is a different class again: engineered for palletised loads handled by forklift, rated in tonnes per beam level. The simple rule of thumb — if you load by hand and the items are bulky or heavy, longspan is usually the sweet spot; if you load palletised goods by forklift, you need racking.
The specifications that matter
Shelf load capacity (UDL)
The key figure is the uniformly distributed load (UDL) each shelf level will safely carry. Manufacturers quote it per shelf and sometimes per bay. Always size to the heaviest shelf you'll actually load — and remember the rating assumes the weight is spread evenly, not concentrated in one spot.
Bay dimensions — height, width and depth
Uprights set the height and depth; beams set the width (the span). Taller bays store more but limit safe hand-reach, so match the top shelf to what staff can load without steps. Wider spans give fewer legs to work around but usually carry less per shelf than a narrow bay — there's always a trade-off between span and capacity.
Shelf material
Chipboard panels suit boxed and general goods; steel shelves resist damage and damp; mesh shelves allow airflow, let light through and suit sprinkler compliance. Choose by what you're storing and the environment.
Starter and extension bays
Like racking, longspan is built from starter bays (two uprights and a full set of beams) and extension bays (one upright sharing the neighbour's frame). Running bays as extensions along a wall saves on uprights and cost — plan the run before you order.
How to choose a longspan shelving system
- Profile your stock. List the heaviest and bulkiest items, their dimensions and weight. This sets your shelf UDL and bay depth.
- Set the bay size. Choose width (span) and depth around the goods, and height around safe hand-reach and your ceiling.
- Count the levels. More shelf levels mean more capacity but a higher reach — keep heavy items low.
- Plan the layout. Use starter plus extension bays along walls, leave aisles wide enough for trolleys, and allow access from the right side.
- Specify the shelf material and finish. Steel or mesh for damp, heavy or fire-regulated areas; chipboard for general dry stock.
Loading and safe use
Longspan shelving must be installed level and, where required, fixed or braced to stay stable when loaded. Load the heaviest items on the lower shelves to keep the centre of gravity low, never exceed the stated shelf UDL, and don't climb the shelving — use proper steps or access platforms to reach high levels. Like all storage equipment, it falls under PUWER 1998: inspect frames, beams and shelves regularly and replace any damaged components rather than patching them.
Longspan and heavy-duty shelving at KC Supply
KC Supply is run by people who've worked in warehouses, so we'll point you to the right system for how you actually load — not the biggest one on the page. Our racking and shelving range covers hand-loaded shelving through to pallet racking, and our heavy-duty shelving includes SSI Schaefer industrial shelving and GPC small-parts shelf units for medium and heavy stock. If you're not sure whether you need longspan shelving or racking, tell us the load weight and how you handle it and we'll steer you to the right call. All specifications are taken from current product data — check the individual product page for exact dimensions and load ratings before ordering.
Longspan shelving FAQ
What is longspan shelving used for?
It's used for hand-loaded medium and heavy stock that's too bulky for standard shelving but doesn't need forklift handling — stockrooms, workshops, parts stores, archives and retail back-of-house. Wide beam spans give generous, uninterrupted shelf widths.
What is the difference between longspan shelving and pallet racking?
Longspan shelving is for hand-loaded goods, rated in hundreds of kilograms per shelf. Pallet racking is engineered for palletised loads handled by forklift, rated in tonnes per beam level. If you load by hand, longspan is usually right; if you load pallets by forklift, you need racking.
How much weight can longspan shelving hold?
It depends on the system, but per-shelf capacities commonly run from around 150kg up to several hundred kilograms as a uniformly distributed load. Always size to the heaviest shelf you'll load and work to the manufacturer's stated UDL.
Do you need to bolt down longspan shelving?
It must be installed level and stable; taller or free-standing runs often need fixing or bracing to stay safe when loaded. Follow the manufacturer's installation guidance and your own risk assessment.
This guide is general information, not a substitute for your own risk assessment or the manufacturer's load data. Confirm shelf UDLs, bay sizing and installation requirements against the product data and your site's procedures before ordering.