20ft Flat Rack Shipping Container Dimensions
Specialised Cargo Logistics in Scotland
Shipping Containers of Grangemouth provides professional container solutions for industrial and commercial sectors requiring the transport of oversized cargo. For projects involving heavy machinery or structural components that exceed standard dimensions, businesses can buy containers as permanent assets. Alternatively, for project-based logistics, Shipping Containers of Grangemouth offers a flexible fleet to rent containers/shipping containers. Every procurement process begins with a detailed container quote to ensure the equipment meets exact site and cargo constraints.
A flat rack is a specialised shipping container consisting of a reinforced steel platform and two end walls, designed to carry cargo that is too wide or tall for standard units. Shipping Containers of Grangemouth ensures all equipment complies with international safety standards, facilitating secure handling for industrial plant, steel structures, and vehicles. These units are essential for out-of-gauge (OOG) logistics, a term referring to cargo that exceeds the standard internal dimensions of a shipping container. We maintain deep stocks of these units to support the energy, construction, and engineering industries throughout the Scottish mainland and islands.
20ft Flat Rack Technical Specifications
Precision planning is required when moving heavy equipment. While a 20ft flat rack container shares the same external footprint as a standard 20ft shipping container, the lack of side walls and a roof alters the loading mechanics and payload distribution. Shipping Containers of Grangemouth verifies these figures for all current stock to assist with site layout and transport planning across Scotland.
| Description | Metric (m/kg) | Imperial (ft/lb) |
|---|---|---|
| Maximum Payload | 28,300 kg | 62,391 lb |
| External Length | 6.096 m | 20 ft 0 in |
| External Width | 2.438 m | 8 ft 0 in |
| External Height | 2.591 m | 8 ft 6 in |
| Internal Length | 5.896 m | 19 ft 4 1/8 in |
| Internal Width | 2.350 m | 7 ft 8 1/2 in |
| Internal Height | 2.393 m | 7 ft 10 7/32 in |
| Tare Weight | 2,740 kg | 6,041 lb |
| Maximum Gross Weight | 30,480 kg | 67,197 lb |
Technical terms define the operational limits of the equipment. Tare is the weight of the empty container. The payload is the maximum weight of cargo the container can safely carry. Every unit provided for international transport by Shipping Containers of Grangemouth includes a valid CSC plate. A CSC plate is a safety approval plate required by the International Convention for Safe Containers, signifying the unit is safe for stacking and transport on sea vessels. For larger payloads or longer cargo, Shipping Containers of Grangemouth also supplies the 40ft flat rack container, which provides significant additional floor space for industrial equipment.
Design Variants: Collapsible vs Fixed Ends
Shipping Containers of Grangemouth stocks flat racks in different configurations to suit varying storage and transport needs. The choice between collapsible and fixed-end units depends on your requirement for space efficiency and structural rigidity.
Collapsible End Flat Racks
The collapsible end flat rack is the most common variant in modern logistics. The end walls of these units can be folded flat onto the base platform. This design allows several empty flat racks to be stacked together into a single 8ft 6in ISO module, which significantly reduces shipping costs for return journeys. Shipping Containers of Grangemouth recommends these units for businesses managing multi-leg logistics projects where empty equipment must be repositioned efficiently. When the ends are raised, they lock into place with heavy-duty pins to ensure the cargo remains secure.
Fixed-End Flat Racks
Fixed-end units feature permanent vertical walls at each end. These units are generally more robust and are often used for extremely heavy payloads or as temporary bridges and platforms on construction sites. While they lack the space-saving benefits of collapsible models, they offer superior structural strength for long-term industrial use. Shipping Containers of Grangemouth supplies these for specific heavy-lift applications where wall movement must be entirely eliminated.
Industrial Applications and Cargo Types
The 20ft flat rack is an essential tool for the transport of machinery that cannot be accommodated in standard 40ft shipping containers. Shipping Containers of Grangemouth supports several key industries with these specialised units.
- Construction and Plant: Used for moving excavators, bulldozers, and heavy drilling rigs. The lack of side walls allows the machinery to slightly overhang the width of the container base.
- Energy and Infrastructure: Transporting turbine parts, large transformers, and industrial generators.
- Industrial Components: Ideal for long or wide items such as steel girders, large-diameter pipes, and cable drums.
- Agricultural Machinery: Moving tractors, combine harvesters, and irrigation equipment across Scotland.
- Temporary Structures: Flat racks can be used as temporary vehicle ramps, small bridges, or reinforced platforms for site events.
When loading cargo that exceeds the width of the flat rack, it is vital to ensure the payload remains balanced. Shipping Containers of Grangemouth provides technical guidance on weight distribution to prevent stability issues during transport or lifting.
Ready to Start Your Project?
Get expert advice on container sales and hire today.
Structural Features and Construction
The safety and longevity of a flat rack depend on the quality of its construction. Shipping Containers of Grangemouth focuses on providing equipment that can withstand the rigours of heavy industrial use.
Corten Steel Base
The main platform is constructed from high-grade Corten steel. Corten steel is a weathering steel alloy designed to form a protective layer of rust that prevents deep corrosion. This is critical for equipment exposed to the salt air of Scottish ports. The base features reinforced cross members to support high point loads, ensuring that heavy machinery does not damage the structural integrity of the unit.
Securement Points and Lashing Rings
Security is non-negotiable when moving out-of-gauge cargo. Shipping Containers of Grangemouth units are fitted with numerous lashing rings along the side rails and at the corner posts. These points allow for the use of chains, straps, and turnbuckles to secure the payload. For heavy machinery, we recommend using timber chocks and dunnage to prevent lateral movement on the steel deck during transit. Proper securement is essential for road safety and maritime compliance.
Flooring Systems
Most flat racks feature a wood plank floor, often made from 28mm marine-grade plywood or hardwood. This flooring provides a high-friction surface that helps prevent cargo movement. The wood is treated to resist moisture and pests, ensuring the unit remains fit for purpose throughout its service life. Shipping Containers of Grangemouth verifies the condition of the flooring on every used unit to ensure it can support the intended payload.
Condition Grades and Technical Standards
Shipping Containers of Grangemouth categorises equipment into specific grades to help clients select the right unit for their budget and application. Every unit is inspected for structural safety before dispatch.
One-Trip Flat Racks
A one-trip container is a unit manufactured overseas and shipped once to the UK with a single cargo load. These represent the highest quality available. They feature factory paint, the latest locking mechanisms, and minimal signs of wear. For businesses in shipping container sales Grangemouth requiring long-term assets, one-trip units are the preferred choice.
Used and Refurbished Units
Used flat racks have typically spent several years in international shipping loops. Shipping Containers of Grangemouth ensures these units remain structurally sound and that the collapsible ends function correctly. We also supply equipment maintained to the IICL standard. IICL refers to the Institute of International Container Lessors, which sets a high standard for repair of used units. Used units are a cost-effective alternative for localised transport or site-based platforms. We facilitate these through our shipping container sales Glasgow department.
Siting, Ground Conditions, and Delivery
Delivering and positioning a flat rack requires precision planning. Shipping Containers of Grangemouth manages the logistics to ensure the unit is placed safely at your site.
Hiab Delivery Requirements
We deliver units using a Hiab vehicle, which is a truck equipped with an onboard hydraulic crane. A 20ft unit requires a rigid vehicle approximately 40ft in length. To safely offload, the driver requires at least 60ft of straight-line space. Because flat racks are often used for heavy loads, the vehicle must be able to park in close proximity to the drop point to maintain crane stability. For deliveries in major hubs like storage container hire Edinburgh, ensure there is sufficient width for the vehicle stabilising legs.
Surface Preparation
Units must be placed on level, hard-standing ground. Hardstanding refers to a solid surface such as concrete, tarmac, or compacted gravel that can support the weight of the vehicle and the container. If the surface is not level, the unit may experience racking, a structural twist that can prevent the end walls from locking correctly. Shipping Containers of Grangemouth recommends using railway sleepers or concrete pads at the corner castings to maintain a level base and prevent the steel frame from sitting directly in moisture.
Obstructions and Overhead Clearance
- Vertical Clearance: Hiab cranes require at least 25ft of vertical clearance to operate the boom arm safely.
- Power Lines: Safety regulations require significant clearance from live power lines, often up to 20 metres.
- Underground Services: Avoid placement over manholes or septic tanks, as the high point loads of a 20ft flat rack can cause structural collapse.
Can I use a flat rack for standard palletised cargo?
While technically possible, flat racks lack the security and weather protection of standard units. They are generally reserved for out-of-gauge cargo. If you need secure storage for pallets, Shipping Containers of Grangemouth recommends a standard 20ft shipping container.
How do I fold the end walls on a collapsible flat rack?
The end walls are held in place by locking pins. Once these are removed, the wall can be lowered onto the base. Because the walls are heavy, this should be done using a forklift or crane. You can find more details on our storage container hire Grangemouth page.
What is the payload of a 20ft flat rack?
The maximum payload is approximately 28,300 kg. However, you must ensure your transport vehicle and any lifting equipment are rated for this weight. Always check the CSC plate for the specific unit's gross weight limit.
How do I secure a vehicle on a flat rack?
Vehicles should be positioned centrally and secured using heavy-duty straps or chains attached to the lashing rings. Use timber blocks under the wheels to prevent rolling. Proper securement is vital for safety during storage container hire Glasgow movements.
Can flat racks be stacked when loaded?
Yes, they are designed to be stacked in the same manner as standard containers, provided the cargo does not exceed the height of the end walls. If the cargo is over-height, it cannot be stacked. Check our 40ft flat rack container specs if you have taller equipment.
