Container Loading Tyre Bales: Maximising Bales Per Shipping Container

Updated on: 18th February 2026 By:     Conor Murphy
Expert review by:     Kieran Donnelly

For operations exporting tyre bales internationally, container loading efficiency directly affects profit margins. Every cubic metre of wasted container space is money lost. Every kilogram below the weight limit is revenue you could have shipped.

A well-loaded 40ft container holds 22 to 24 bales at 900kg each (19,800-21,600kg). A poorly loaded container holds 16 to 18 bales (14,400-16,200kg). At £3,000 to £6,000 per container (typical shipping rates from UK to Australia, Middle East, or Asia), that difference is £150 to £333 per tonne shipped.

This guide explains container specifications, optimal bale dimensions, loading patterns, weight distribution, and securing methods for international shipment of tyre baling equipment output.

Gradeall International manufactures tyre balers at our facility in Dungannon, Northern Ireland, and we export equipment to 100+ countries. We’ve optimised container loading through nearly 40 years of international shipping experience. The specifications below are proven through thousands of container loads.

40ft Container Specifications

Standard ISO 40ft high-cube containers are the most common for tyre bale shipping. Regular 40ft containers work but the reduced height limits vertical stacking.

40ft high-cube container (most common):

• External length: 12,192mm
• External width: 2,438mm
• External height: 2,896mm
• Internal length: 12,032mm
• Internal width: 2,352mm
• Internal height: 2,698mm
• Internal volume: 76.3 cubic metres
• Door opening width: 2,340mm
• Door opening height: 2,585mm
• Maximum gross weight: 30,480kg
• Typical payload limit: 26,500-28,000kg (varies by shipping line and route)

40ft standard container (less common for tyre bales):

• Internal height: 2,385mm (313mm less than high-cube)
• Internal volume: 67.5 cubic metres
• All other dimensions identical to high-cube

The high-cube’s extra height allows three layers of bales (800mm × 3 = 2,400mm) with clearance. Standard containers only accommodate two layers reliably.

20ft containers: Not recommended for tyre bales unless shipping small quantities. Volume is roughly half a 40ft (33 cubic metres) but shipping cost is typically 60% to 70% of 40ft rates. Cost per cubic metre is 20% to 40% higher. Always use 40ft for full loads.

Optimal Bale Dimensions for Container Loading

Container internal width (2,352mm) drives bale dimension optimization. The MKII tyre baler produces bales that fit container width efficiently.

Standard Gradeall bale dimensions:

• Length: 1,100mm
• Width: 1,100mm
• Height: 800mm
• Volume: 0.968 cubic metres (approximately 1.0m³)
• Weight: 900-1,100kg (car tyres)

Why these dimensions work:

Container width: 2,352mm ÷ 1,100mm = 2.14 bales

You can fit two bales side-by-side with 152mm clearance. That clearance allows:

• Wire protrusions and bale bulging (bales aren’t perfect rectangles)
• Forklift fork insertion between bales
• Strapping and securing equipment

Alternative bale widths:

• 1,000mm bales: 2,352mm ÷ 1,000mm = 2.35 (better fit but less common baler specification)
• 1,200mm bales: 2,352mm ÷ 1,200mm = 1.96 (tight fit, difficult loading)

Container length: 12,032mm ÷ 1,100mm = 10.94 bales

You can fit 10 bales lengthwise with 1,032mm clearance at the container door end. This clearance is essential for loading and securing. Trying to fit 11 bales lengthwise leaves only 32mm clearance, which is insufficient for fork access and door closure.

Container height (high-cube): 2,698mm ÷ 800mm = 3.37 layers

You can stack three layers with 298mm clearance above. This clearance accommodates securing straps and prevents top layer crushing against container roof during transport.

Layout: 10 lengthwise × 2 wide × 3 high = 60 bales theoretical maximum

But you’re weight-limited before hitting 60 bales.

Weight Distribution and Loading Calculations

Container gross weight limit is 30,480kg. Deduct container tare weight (approximately 3,900kg for 40ft high-cube), and your maximum payload is 26,580kg. Most shipping lines impose stricter limits (26,000-28,000kg) for road transport safety.

Weight calculation at different bale counts:

Bales	Weight (kg)	% of 28,000kg Limit	Layers	Layout
20	18,000-22,000	64-79%	2	10 × 2 × 1 or 5 × 2 × 2
22	19,800-24,200	71-86%	2-3	Various
24	21,600-26,400	77-94%	3	4 × 2 × 3
26	23,400-28,600	84-102%	3	Risk exceeding limit
28	25,200-30,800	90-110%	3	Likely exceeds limit

At 900kg bales, you can load 28 bales and stay under 28,000kg gross (including container weight). At 1,000kg bales, you’re limited to 24-26 bales. At 1,100kg bales, 22-24 bales maximum.

Practical loading targets:

• Conservative: 22 bales (19,800-24,200kg guaranteed under limits)
• Optimal: 24 bales (21,600-26,400kg, some risk if bales at heavy end)
• Aggressive: 26 bales (23,400-28,600kg, requires weighing each bale to avoid exceeding limits)

Most exporters target 22-24 bales per 40ft high-cube container. This maximises payload without risk of overweight rejections at port.

Loading Patterns and Configurations

Several loading patterns work depending on bale count:

Pattern A: 10 × 2 × 1 (20 bales, single layer) Simplest loading. All bales on container floor, no stacking.

Advantages:

• Fastest loading (30-45 minutes)
• No securing required between layers
• Easy unloading

Disadvantages:

• Only 18,000-22,000kg payload (64-79% capacity utilization)
• Wasting vertical space

Use when: Shipping small orders, fork lift capacity limited at destination, or unloading facilities can’t handle multi-layer stacks.

Pattern B: 5 × 2 × 2 (20 bales, two layers) Two layers of 10 bales each, arranged 5 lengthwise × 2 wide per layer.

Advantages:

• Same bale count as Pattern A but only uses half the container length
• Allows combined shipments (other cargo in remaining space)

Disadvantages:

• Requires securing between layers
• More complex loading

Use when: Consolidating shipments with other cargo or reserving space for additional materials.

Pattern C: 8 × 3 × 1 (24 bales, optimised single layer) This doesn’t work. Container width only accommodates 2 bales, not 3.

Pattern D: 4 × 2 × 3 (24 bales, three layers) Three layers of 8 bales each, arranged 4 lengthwise × 2 wide per layer.

Advantages:

• Good payload utilization (21,600-26,400kg)
• Balanced load distribution
• Efficient use of vertical space

Disadvantages:

• Requires securing between all layers
• Longer loading time (60-90 minutes)

Use when: Maximising container efficiency for regular export volumes.

Pattern E: Hybrid loading (22-26 bales) Combine patterns. For example, first layer: 10 bales (10 × 1 × 2). Second layer: 8 bales (4 × 2). Third layer: 4 bales (2 × 2). Total: 22 bales.

This allows weight balancing. Place heavier bales in lower layers, lighter bales on top, to ensure centre of gravity stays low.

Centre of gravity considerations: Container centre of gravity should be below midpoint and centred lengthwise. Unbalanced loads cause handling problems and shipping line rejections.

Distribute weight evenly:

• Don’t load all heavy bales at front or rear
• Avoid leaving one end significantly lighter
• Place any non-bale cargo (pallets, equipment) centrally

Securing and Strapping Requirements

International shipping subjects containers to significant forces: ship rolling, truck braking, crane lifting. Unsecured cargo shifts, which damages bales and container.

Minimum securing requirements:

Between layers:

• Timber dunnage (100mm × 100mm boards) placed horizontally between each layer
• Dunnage should cover 60% to 80% of bale surface area
• Prevents upper layers crushing lower layers and distributes weight

Horizontal strapping:

• Heavy-duty polypropylene or polyester strapping (25mm width, 1,000kg break strength minimum)
• Minimum 2 straps per layer running lengthwise
• Minimum 2 straps per layer running widthwise
• Straps should be tensioned to 400-600kg (tight but not crushing bales)

Vertical securing:

• Straps or lashing from container anchor points over top layer
• Prevents bales tipping during transport
• Particularly important if container is only partially loaded

Edge protection:

• Cardboard or plastic edge protectors where straps contact bale corners
• Prevents straps cutting into bales during transport

Void filling: If container isn’t fully loaded (e.g., 22 bales leaving 6+ metres empty), fill void with:

• Inflatable dunnage bags (airbags that inflate to fill space)
• Timber bracing anchored to container walls
• Additional cargo (if consolidated shipment)

Empty voids allow cargo to shift during transport. A sliding 20-tonne load causes catastrophic damage.

Strapping cost:

• Dunnage timber: £150-£250 per container
• Strapping and tensioning: £80-£150 per container
• Edge protection: £40-£80 per container
• Void filling (if needed): £100-£300 per container

Total securing cost: £270-£780 per container depending on complexity.

This is non-negotiable. Shipping lines can and do refuse containers with inadequate securing. Re-securing at port costs £500 to £1,200 in labour and delay charges.

Loading Process and Equipment

Equipment required:

• Forklift rated to 1,500kg minimum (2,000kg preferred for maneuverability with 1,100kg bales)
• Forklift forks minimum 1,200mm length (longer is better for stability)
• Container locking gear (twistlocks or stackers if loading at facility without container chassis)
• Strapping tools (tensioner, seals, cutter)
• Timber dunnage cut to size
• Edge protectors

Loading procedure:

Step 1: Container inspection (5 minutes) Before loading, inspect container interior:

• Check floor for damage, holes, or moisture
• Verify container number matches shipping documents
• Confirm door seals intact (if required for export documentation)
• Sweep floor clean of debris

Step 2: First layer loading (20-30 minutes for 8-10 bales)

• Position bales in planned pattern
• Start at front (opposite door end) and work toward door
• Ensure bales sit flush with floor and each other
• Leave fork access gaps between rows

Step 3: First layer securing (10-15 minutes)

• Lay timber dunnage across entire layer
• Apply lengthwise straps (2 minimum)
• Apply widthwise straps (2 minimum)
• Tension straps to 400-600kg

Step 4: Second layer loading (20-30 minutes)

• Load bales on top of dunnage
• Stagger joints (don’t stack bales directly above gaps in lower layer)
• Maintain planned pattern

Step 5: Second layer securing (10-15 minutes)

• Repeat dunnage and strapping process

Step 6: Third layer loading and securing (20-30 minutes)

• If loading three layers, repeat process
• Third layer requires vertical securing to anchor points

Step 7: Void filling (10-30 minutes if required)

• Install dunnage bags or timber bracing in empty space
• Ensure cargo cannot shift

Step 8: Final inspection (5-10 minutes)

• Verify all straps tensioned correctly
• Check bales secure and stable
• Confirm weight documented (weigh each bale or use calculated weight)
• Photograph loading for shipping documentation

Step 9: Sealing (5 minutes)

• Close and seal container doors
• Record seal number on shipping documents
• Container ready for collection or delivery to port

Total loading time: 90-150 minutes for a full 24-bale load with experienced crew.

Documentation and Export Requirements

International shipment requires specific documentation:

Packing list:

• Container number
• Number of bales
• Weight per bale (individual or average)
• Total gross weight
• Bale dimensions
• Description of contents (“Used Tyre Bales, 900kg each, compressed for civil engineering applications”)

Weight certificate: Some destinations require certified weighbridge tickets proving gross weight. Obtain these before container leaves your facility or at port weigh station.

Commercial invoice:

• Description of goods
• Quantity (number of bales)
• Unit price and total value
• Currency
• Incoterms (FOB, CIF, etc.)
• Buyer and seller details

Bill of lading: Provided by shipping line, documents container number, vessel, port of loading, port of discharge, and consignee.

Customs declarations:

• HS code for waste tyres (usually 4004.00 – waste, parings and scrap of rubber)
• Export licences if required by UK authorities
• Import permits if required by destination country

PAS 108 certification (if applicable): If bales are PAS 108 compliant and buyer requires certification, provide test reports or declarations confirming compliance.

Phytosanitary certificates: Some countries require these for timber dunnage. Use heat-treated timber stamped with ISPM 15 marking to avoid issues.

Errors in documentation cause delays, fines, and containers being held at port. Verify all requirements for your specific destination before shipping.

Cost Per Tonne Analysis

Container shipping costs vary by route and season. Here are typical examples (early 2026):

UK to Australia:

• Container cost: £4,500-£6,000
• 22 bales at 950kg: 20,900kg
• Cost per tonne: £215-£287

UK to Middle East (UAE):

• Container cost: £2,000-£3,000
• 24 bales at 900kg: 21,600kg
• Cost per tonne: £93-£139

UK to Far East (Malaysia/Thailand):

• Container cost: £3,500-£5,000
• 24 bales at 950kg: 22,800kg
• Cost per tonne: £154-£219

These calculations include only container freight, not:

• Inland transport to UK port (£200-£500)
• Port handling charges (£150-£300)
• Destination port charges (varies by country)
• Customs clearance (£100-£500)
• Destination delivery (varies)

Total landed cost is typically 150% to 200% of container freight cost.

Impact of loading efficiency: Poor loading (18 bales at 900kg = 16,200kg):

• UK to Australia: £4,500 ÷ 16.2 tonnes = £278/tonne
• Good loading saves £62/tonne or £1,290 per container

Over 20 containers annually, that’s £25,800 in savings just from optimising loading patterns.

Common Loading Mistakes and Solutions

Mistake 1: Ignoring bale dimension variation If bales range from 1,050mm to 1,150mm width, you can’t fit 10 bales lengthwise reliably. Solution: Maintain bale dimensions within ±30mm through proper baler calibration and maintenance.

Mistake 2: Overloading weight Loading 28 bales at 1,050kg each exceeds 28,000kg container limit. Container gets rejected at port, requiring expensive re-stuffing. Solution: Weigh every bale or use conservative loading targets (22-24 bales).

Mistake 3: Inadequate securing Straps aren’t tensioned properly or dunnage is missing. Cargo shifts during transport, damaging bales. Solution: Follow securing procedures systematically and photograph before sealing.

Mistake 4: Poor weight distribution All heavy bales at one end causes unbalanced load. Crane operators refuse to lift container. Solution: Distribute weight evenly front-to-back and side-to-side.

Mistake 5: Loading incompatible cargo together Mixing tyre bales with materials that emit moisture, odours, or contaminants. Bales arrive damaged or contaminated. Solution: Tyre bales should ship in dedicated containers or with compatible dry cargo only.

Frequently Asked Questions

Conclusion

Efficient container loading reduces international shipping costs by 20% to 40% through maximising payload. A well-loaded 40ft high-cube container holds 22-24 bales at 900kg each (19,800-21,600kg), achieving 71% to 79% payload utilization.

Optimal bale dimensions (1,100mm × 1,100mm × 800mm) fit container width efficiently: 2 bales side-by-side, 10 bales lengthwise, 3 layers high. Variations beyond ±50mm waste 10% to 15% of container space and complicate loading.

Proper securing prevents cargo damage and shipping line penalties. Use timber dunnage between layers, horizontal strapping (4+ straps per layer), vertical lashing, and void filling for partial loads. Securing costs £270-£780 per container but prevents £2,000+ damage claims and re-stuffing charges.

Weight limits (28,000kg gross including container) determine bale count more than volume. At 900kg bales, load 24 maximum. At 1,100kg, reduce to 22. Overweight containers face rejection, re-stuffing charges, and schedule delays.

Documentation accuracy prevents customs delays. Verify HS codes, commercial invoice details, weight certificates, and destination-specific requirements (PAS 108 certification, phytosanitary certificates) before container leaves your facility.

Request container loading specifications and optimal bale dimensions when ordering tyre baling equipment from Gradeall. We design bales specifically for efficient container loading based on nearly 40 years of international shipping experience.

* The prices and running-cost figures below are based on real UK customer examples and are correct at the time of writing, but should be treated as indicative only.

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