The maximum payload of a tile container is the lowest of three limits: the container's own rating, the shipping line's limit for that route, and the road weight limit at both ends. For a standard 20 ft box, tiles usually load somewhere around 26 to 28 tonnes of cargo, but the right number for you depends on where the container is going.
Tiles are dense, so a container of tiles always reaches its weight limit long before it runs out of space. That is why payload, not volume, decides how many square metres you can buy per container.
Limit one: the container plate
Every container carries a CSC safety approval plate. It states the maximum gross mass (the box plus its cargo) and the tare (the empty box). Payload is gross minus tare.
A standard 20 ft dry container is commonly rated at 30,480 kg gross, and many newer boxes are rated higher. Tare is typically a little over 2 tonnes. So the plate alone often allows around 28 tonnes of cargo. Tiles almost always ship in 20 ft containers, because a 40 ft box has a similar or only slightly higher weight rating and would travel half empty.
Since 1 July 2016, SOLAS rules require a verified gross mass (VGM) for every packed export container before it is loaded on a ship. The factory or its forwarder weighs the box or calculates the weight by an approved method. Ask for the VGM figure along with the packing list.
Limit two: the shipping line and the route
Shipping lines can set their own cargo weight caps per container. These vary by carrier, vessel, port and season, and they can be lower than the plate. Some lines also add an overweight surcharge above a threshold.
Your forwarder should confirm the carrier's limit for your exact routing before the factory plans the load. A plan built on the plate figure can be rejected at the gate if the line's cap is lower.
Limit three: roads at destination
The container has to leave the port on a truck. Road limits apply to the whole vehicle: tractor, chassis, container and cargo. In the United States the federal limit on Interstate highways is 80,000 lb gross vehicle weight, and some states and axle configurations are stricter. In the EU, the baseline under Directive 96/53/EC is 40 tonnes for a standard five-axle articulated truck, with national variations.
Once you subtract the tractor, the chassis and the empty box, the legal cargo weight on the road can be well below what the ship would accept. Many inland destinations therefore load lighter. Some importers transload at the port into lighter trucks, which adds handling and breakage risk.
Ask your local haulier for the cargo weight they can move legally to your warehouse without a special permit. That number, not the plate, is often your real payload.
Turning payload into an order
Once you know your payload, you can plan quantities. Divide the allowed cargo weight by the weight per square metre of each tile, including boxes and pallets. Thicker and larger tiles weigh more per square metre, so fewer square metres fit.
For worked examples by size and thickness, see how many square metres of tiles fit in a 20 ft container. For a short planning guide per size, see the weight limit per container for tiles. The space left above the cargo is explained in why a tile container is never full to the roof.
- Give the factory your maximum cargo weight in writing, in kilograms, before it prepares the loading plan.
- Ask for a loading plan that shows boxes per pallet, pallets per container and the total gross weight.
- Check that the weight on the packing list matches the VGM and the bill of lading.
- Leave a small margin below the limit, because box weights vary slightly between batches.
Next step
Overweight containers cause port fines, delays and rejected bookings. We confirm the route limits with you, check the factory's loading plan and supervise the weighing and loading. To plan your first container properly, book a free sourcing review.