Container weight limits, VGM and load distribution for chair shipments

Chairs cube out long before they weigh out, which is exactly why weight gets ignored until a booking is refused or a truck is fined at destination. These are the numbers we plan against every time we build a load plan for a seating order.

Published by JPChairs · Chair manufacturer in Foshan, China · 2026-10-26

How much payload a container really has

The nameplate rating and the booking limit are two different numbers, and it is the second one that governs your load:

• 20ft standard: 33 m3 of usable space, 30,480 kg rated gross, 2,200 to 2,350 kg tare. The theoretical payload is about 28,000 kg, but most carriers cap bookings at 21,000 to 22,000 kg so the box stays road legal once it lands.
• 40ft high cube: 76 m3 nominal, around 68 m3 usable once you leave door clearance, 3,700 to 3,900 kg tare, and a realistic payload allowance of 26,000 to 26,800 kg.
• 40ft standard: 67 m3, similar gross, roughly 26,500 to 27,500 kg of usable payload.
• What chairs actually weigh: an upholstered restaurant chair packs at 11 to 15 kg in a 0.06 to 0.09 m3 carton, stackable aluminium frames at 5 to 7 kg, solid wood arm chairs at 14 to 18 kg.
• The practical consequence: 400 upholstered chairs weigh 4,800 to 6,000 kg, which is under 20 per cent of what a 40ft high cube can carry. On a pure chair order you fill the box before you ever reach the weight limit.

VGM: the rule that stops boxes at the gate

Since 1 July 2016 SOLAS regulation VI/2 has required a verified gross mass before any packed container is loaded, and terminals enforce it literally: no VGM, no load.

• Method 1: weigh the packed container on a calibrated weighbridge or certified scale. Accuracy is typically plus or minus 0.5 per cent or 50 kg, whichever is greater, and we keep the calibration certificate with the load file.
• Method 2: sum the cargo mass, packaging and dunnage, add tare, and have the total signed by the responsible person. Faster, but any dispute lands on your records rather than a scale ticket.
• Cut-off: terminals generally set it 1 to 3 hours before loading, which in practice means 24 hours. We file 48 hours before gate-in.
• Cost of getting it wrong: administrative fees start around USD 500 per box, a re-weigh runs USD 60 to 150, and a rolled container costs 3 to 7 days, often more if the next sailing is a week out.
• Our target: declared VGM within 1 per cent of the weighbridge reading, so a spot check at the destination terminal cannot turn into a discrepancy letter.

Balancing the load inside the box

The container sits on five surfaces and only the floor matters. Once aboard, an unbalanced box is somebody else's stability problem:

• Front to back: keep the difference between the two halves under 1,500 kg and the resulting centre of gravity within 600 mm of the geometric centre on a 40ft.
• Heavy items low: cast-iron bases, stacked frames and table tops go in the bottom two layers. Nothing over 25 kg goes above shoulder height.
• Spread point loads: anything above 500 kg rests on 15 mm plywood dunnage across at least two floor cross members so the load reaches the understructure rather than one sheet of plywood.
• No voids wider than 100 mm: fill with knocked-down cartons or dunnage bags, because a gap is a 300 mm drop waiting for the first port crane.
• Door end: leave 100 to 150 mm clearance and brace with a wooden gate of two 20 x 100 mm rails, or nylon strapping rated for at least 400 kg per strap.

Where the weight bites: road limits at destination

Containers can leave legally and still be illegal on the last 40 km. The usual failure is an axle, not the gross:

• Europe: a standard five or six axle articulated vehicle works to 40 t gross under EU Directive 96/53/EC, with 11.5 t on a single driven axle; some corridors allow up to 44 t for combined transport using a 40 or 45ft box.
• United States: the federal bridge formula puts 20,000 lb (9,070 kg) on a single axle and 34,000 lb (15,420 kg) on a tandem, with 80,000 lb (36,287 kg) gross unless a permit is issued.
• What a shifted load does: moving the centre of gravity 1 m along a 40ft box transfers roughly 700 to 900 kg between tractor and trailer axles, which is enough to convert a legal load into an overweight one.
• Paperwork to avoid it: ask for the per-axle split at booking, and budget USD 150 to 600 per state for a permit plus 3 to 5 days of lead time in the US if you know the load is heavy.

What goes into our load plan before we book

The load plan is built before the booking is placed, not the night before the truck arrives:

• Carton list with weights: piece count, single carton weight within plus or minus 5 per cent, and a running total by layer.
• Layer and height plan: internal heights are 2.39 m for a standard box and 2.69 m for a high cube, so we stop 80 to 100 mm short and keep each layer level within 30 mm.
• Stacking limit: no more than six layers of standard chair cartons, because the bottom carton carries five times its own weight for months in a humid hold.
• Photographic record: pictures at 25, 50, 75 and 100 per cent of the load plus the closing sequence, which settles every damage claim we have had in the last two years.
• Tolerance agreed up front: plus or minus 3 units count variance and plus or minus 5 per cent weight variance, with the party paying for any re-weigh named in advance.

Numbers worth agreeing before the booking

Six items agreed early remove most of the surprises later on:

• Single carton weight and count per SKU, so the running total is settled before cargo reaches the port.
• VGM method and who files it, plus whose cost it is if the terminal re-weighs.
• Payload cap at booking, not the nameplate; ask for the number in writing because it varies by lane.
• Maximum stack layers and height for the specific carton you are buying.
• Delivery window and free days, typically 3 to 7 free days at destination before demurrage starts at USD 80 to 150 a day for a 40ft.
• Whether the order moves palletised or floor loaded, which changes both the count and the centre of gravity.

Seating ranges that ship well in this format are listed on the commercial restaurant chairs, and the shipping and packing questions we get asked most are answered on our container shipping FAQ.