A mezzanine is usually designed for what stands on it: racking, pallets, stock, people. A lift platform asks a different question, because the same weight arrives through a handful of anchor points instead of spread across a floor. This guide sets out what a mezzanine has to carry, how to check it, and what changes if the answer is no.
What does a mezzanine floor actually have to carry?
Seven things arrive with a goods lift, and only one of them is the load you can see.
| What arrives | What it is | Where it lands | Why it decides the answer |
|---|---|---|---|
| The lift’s own steel | Rails, lifting frame, platform, gates | Rail bases at the lower level, brackets and cross beams at the upper level | Permanent load on the same few points for the life of the building. A standard unit ships as a wooden case of about 4000 x 2300 x 1800 mm weighing about 1,800 kg. |
| The goods | The live load the lift is rated for | Onto the deck, then into the rails | 2.5 t on our standard model, and it travels up and down all day |
| The handling equipment | Pallet truck, trolley or hand cart | Rides on the deck with the load | It counts towards the load, so it has to be in the floor calculation too |
| Point loads | The anchor points themselves | Into the slab and the wall at four or more places | A mezzanine designed for distributed storage load is not automatically designed for a concentrated load in one spot |
| The pit or the ramp | 2200 x 2250 x 300 mm pit for the 1600 x 2200 mm platform, or a pitless ramp | Cut into or built on the floor slab at the lower level | The slab, and the edge beam if the opening is at the edge, have to be respected |
| Landing protection | Interlocked gates and guarding on each level | Supported at the mezzanine edge | Access protection is part of the structure, not an accessory fitted later |
| Starting and stopping | The platform moving at 4 – 5 m/min with PLC levelling | Into the same points as the live load | The movement is gentle, but the load on the anchors still changes with every trip |
How to check a mezzanine before you order
The check has to happen before manufacture, because the rail positions and the pit are fixed on the drawing. Work through the six points below.
- Get the mezzanine drawing. You need the main beam span, the spacing of the secondary beams or joists, the deck type, and the load the structure was designed for.
- See where the rails will land. A rail base sitting directly over a beam or a column line is easy. The same base landing in the middle of a deck panel is the case that decides the project.
- Decide pit, ramp or pitless. The standard build for the 1600 x 2200 mm platform uses a 2200 x 2250 x 300 mm pit. Cutting even a shallow pit is a change to the slab, and if the opening sits at the edge of the mezzanine the edge beam has to be respected. A pitless version with a ramp avoids the cut entirely.
- Check the landing protection. Interlocked gates or doors are needed on every landing, and their weight and the guarding belong to the same structure as the lift.
- Measure the route. Headroom above the highest platform position, space for the trolley to turn at each landing, and clear width for the platform and its 1000 mm guardrail.
- Ask a structural engineer to sign it off. Our part is to give the rail loads, the pit dimensions and the layout drawing. The building belongs to a local engineer who can see it.
Which configuration is easiest on the structure?
The way the load is carried into the building follows the configuration, and this is one of the reasons a rail lift is often the answer for an existing mezzanine.
| Configuration | How the load is shared | Best for | Notes |
|---|---|---|---|
| Single guide rail, one cylinder | One rail | Narrow openings and light loads | Most compact footprint |
| Double guide rail, two cylinders | Two rails and two cylinders | Warehouse, workshop and food plant goods transfer | Holds level with off-centre loads; wider platforms; two lines of anchors share the load |
| Four column | Independent four post frame | Heavy loads, large platforms, outdoor and yard use | Free standing, does not rely on the building wall |
How does it compare with a freight elevator?
Both machines move goods between floors, and buyers often price them against each other before anyone asks what the building has to provide.
| Double guide rail cargo lift | Passenger or freight elevator | |
|---|---|---|
| Shaft | Not required, rails fix to the floor and wall | Required |
| Pit | 300 mm shallow pit, or pitless version | Deep pit and machine room |
| Goods only | Yes, never for carrying people | Passenger versions carry people |
| Installation | By your own team from our drawing and manual | Specialist lift installer |
| Structural work | Anchors into the floor and wall, opening for the platform | Shaft, pit and machine room built into the building first |
| Typical lead time | About 25 working days plus shipping | Longer, and building work comes first |
For an existing mezzanine the difference is not marginal: a shaft and a deep pit have to be built, and the structure carries the enclosure as well as the loads. A guide rail lift asks for two lines of anchors, a shallow pit or a ramp, and a drawing your own fitters can follow.
What two real installations asked of the building
We built a 2.5 t double guide rail cargo lift for a warehouse project in Bosnia: 5 m of travel, a 1600 x 2200 mm platform, 180 degree through loading on two floors and a 300 mm pit. The rails were anchored to the existing wall, so the floors took the platform loads rather than the weight of an enclosure, and the customer’s own fitters installed the lift from the assembly drawing.
A project in Ningbo went the other way: a 1.3 x 1.3 m platform serving three levels, through loading, with additional protection mesh around the landing openings. Smaller deck, lighter loads, same principle, and the guarding was decided at the same time as the steelwork rather than added afterwards.
Frequently asked questions
Can a cargo lift be installed on a mezzanine floor?
Yes, and it is a common retrofit. What has to be confirmed is the point where the two rail bases land, the strength of the wall or frame that carries the upper brackets, and the opening for the platform and its guardrail. Send the mezzanine drawing, the floor to floor height and the heaviest load, and the layout can be checked against them before anything is built.
Do I have to cut a pit into the mezzanine?
Not necessarily. The standard build uses a 300 mm pit, which is shallow compared with a freight elevator, and a pitless version is available where the slab cannot be cut. The trade-off is a ramp at the lower level, so the trolley approaches the platform up a short slope instead of level with the floor.
Who is responsible for checking that the floor is strong enough?
A structural engineer who can inspect the building. We provide the rail loads, the anchor positions, the pit dimensions and the layout drawing, and we build to them, but we do not certify the structure of a building we cannot see. On retrofit projects the engineer’s check is normally the last gate before manufacture.
Next step
Send us a photograph of the wall and the floor opening, the main beam spacing from the mezzanine drawing, the floor to floor height and the heaviest load that will travel. We will confirm the configuration, the anchor positions and whether a pit or a ramp suits your slab, then return a drawing for approval before manufacture. Start from the double guide rail cargo lift specification or the cargo lift range overview, and if the shaft question is still open, read how a cargo lift works without a shaft.