Monday, March 4, 2019

Dimensions of a Shipping Container - AGL


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Shipping Container Dimensions

Container TypeExternal LengthInternal LengthExternal HeightInternal HeightExternal WidthInternal Width
20ft Shipping Container
20ft (6.09m)
19ft 9 inches (6.01m)
8ft 6 inches (2.59m)
 7ft 10 inches (2.39m)
8ft (2.44m)
 7ft 10 inches (2.34m)
40ft Shipping Container
40ft (12.18m)
39ft 9 inches (12.11m)
8ft 6 inches (2.59m)
7ft 10 inches (2.39m) 
8ft (2.44m)
 7ft 10 inches (2.34m)
20ft High Cube Shipping Container
20ft (6.09m)
19ft 9 inches (6.01m)
9ft 6 inches (2.90m)
 8ft 10 inches (2.69m)
8ft (2.44m)
 7ft 10 inches (2.3m)
40ft High Cube Shipping Container
40ft (12.18m)
39ft 9 inches (12.11m)
9ft 6 inches (2.90m)
 8ft 10 inches (2.69m)
8ft (2.44m)
 7ft 10 inches 

External Shipping Container Dimensions

Container Lengths

20 FT (6.09m) and 40 FT(12.19m) are the industry standard container lengths.
For storage and other non-shipping applications other sizes are created by cutting down larger containers to the required size. The most common cut-down sizes are 8ft (2.44m), 12ft (3.66m), 16ft (4.88m), 24ft (7.32m) and 32ft (9.75m). Other bespoke sizes can also be manufactured to order. 

Container Heights

A Standard Container is typically 8ft 6 inches (2.59m) high.
High cube Containers are typically 9ft 6 inches (2.90m) high.
The most common height of a container is 8ft 6ins (2.59m), though 9ft 6 inches (2.90m) high-cube containers are becoming increasingly common. In the past 8ft high (2.44m) was very common and there are some containers 9ft (2.74m) available but these are rare.

Container Widths

The standard width of a container is 8ft (2.44m). To accommodate some types of pallets, particularly in Europe 2.5m (8ft 2.4 inches) wide containers are available though they are less commonly available to buy on the second-hand market.

Internal Shipping Container Dimensions

The sides of a container are in nearly all cases, corrugated. The depth of the corrugation is usually 1 inch (25mm), which means that 2 inches (50mm) is lost from the external width dimension (1 inch each side). The back (blank end) is also corrugated and the doors are around 2 inches (50mm) thick meaning that approximately 3 inches (75mm) is lost from the length.
The main reduction from external to internal dimensions is with height. The floor of a standard container has an underside clearance of approximately 6 inches (150mm) and the floor has a thickness of 27mm (1.1 inches). As the roof is corrugated another 1 inch (25mm) is lost resulting in an internal dimension of around 8 inches less than external – 7ft 10 inches (2.39m), though this can vary slightly either way depending on the floor thickness and construction method used.
Through the door height is additionally reduced because of the steel top rail above the door, this is a part of the structural integrity of the container, typically it's 4 inches (100mm) thus reducing the entrance height to 7ft 6ins (2.28m), though this can vary slightly either way.

Shipping Container Weights (Tare Weight, Gross Weight and Payload)

Shipping Container Weights
There are three relevant weights, the Tare Weight, the Gross Weight and the Payload. These are painted onto the outside of the container doors when it is in shipping service or before it has been repainted for another application.
  • The Container Tare Weight is the weight of the container without cargo or contents.
  • The Container Gross Weight is the weight of the container plus the maximum payload it can hold i.e. the maximum total weight of the container.
  • The Payload (or Net Weight) is the weight of the cargo or contents that a container can hold.
Typical Weights of Standard Shipping Containers
Length10ft20ft40ft
Max Gross Weight11,300kg30,480kg*30,400kg
24,910lbs67,200lbs67,200lbs
Tare Weight1,300kg2,160kg3,750kg
2,870lbs4,760lbs8,270lbs
Payload (or Net Weight)10,000kg28,320kg26,730kg
22,040lbs62,440lbs58,930lbs
*The most common alternative for 20fts is 24,000kg for stores manufactured to a lower specification.
Note that cut-down containers cannot hold the same weight when lifted as a standard container because the structure of the container has been altered. The container modification company should be able to supply details of capacities and advise if their design has been weight tested for lifting.

Cubic Container Capacity

Typical Cubic Capacities of Standard Shipping Containers
Length10ft20ft40ft
Cubic Capacity15.95 cubic meters33.2 cubic meters67.59 cubic metres
563.3 cubic feet1,173 cubic feet2,387 cubic feet

Shipping Container Structure

Containers are designed to carry cargo. They are designed to be lifted vertically from above by cranes and transferred from ship to shore and between other forms of transport such as trains and lorries. Therefore they need to have strength in the top corners where they are engaged by the twistlocks of a container lifting crane. The corner castings in the top corners of the container are therefore points of strength.
The strength is transferred down through the corner posts to the corner castings at the bottom and then through the floor. The floor is constructed of steel cross members approximately 6 inches (150mm) deep, which are approximately 20 inches (508mm) apart (laterally across the container) and give transverse strength and support the floor. The cross members are welded at each end to longitudinal beams which run the length of the container between the corner castings. This all means that the strength of a container lies within the corner posts and the floor. Structural alterations or damage to these components will weaken the container.

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