ᐅ Is a foundation necessary for containers? If so, how should it be done?

Created on: 13 Mar 2024 19:13
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wobbbel
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wobbbel
13 Mar 2024 19:13
Hello everyone,

A shipping container office is going to be placed on an agricultural property. The container measures 6 meters (20 feet) long, 2.5 meters (8 feet) wide, and 2.8 meters (9 feet) high.
See photos of the container and the installation site.

The question is whether a foundation is needed for this. Are there people here with experience?
Is a proper concrete foundation required, or would a few stacks of paving slabs be sufficient?

I appreciate any help! 🙂
White shipping container on gravel plot next to wooden fence; garden furniture in the foreground.

Person working outside a building, next to building materials and green piping.
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Allthewayup
13 Mar 2024 19:33
How much does the container weigh?
Usually, the manufacturer provides information for installation. I wouldn’t make a big deal out of it and would place it on a few concrete slabs like many others do, unless it needs to be lifted by 50 cm (20 inches).
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WilderSueden
13 Mar 2024 20:03
It is important that the ground is suitable. So, no sloping gravel that you then try to level out with a 5-piece stack of paving slabs. Otherwise, I would simply use a gravel surface, crushed stone, or paving slabs, as long as the manufacturer does not specify otherwise.
Nida35a13 Mar 2024 20:17
@motorradsilke lived in a container on the construction site for a few months.
The question is for how long and what is it intended for?
Living, storage, or a party venue?
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wobbbel
13 Mar 2024 21:14
The container is intended to be used as an office. So, it will contain 1-2 desks and a few shelves with folders.
It is planned to remain in place for several (many) years.

Possibly, you could install, for example, 4 support points per side—that is, 8 in total—to distribute the weight over more points. That should reduce the risk of sinking, right?

A standard shipping container of this size is usually specified with an empty weight of about 2 tons.
If you add another ton for the office furnishings and distribute the total 3 tons across 8 support points, that would be 375 kg (825 lbs) per support point.
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motorradsilke
13 Mar 2024 21:57
Standard paving slabs of 30 x 30 cm (12 x 12 inches) are sufficient, depending on the ground conditions. However, I used 14 or 16 support points. There was one at each corner, front and back, one in the middle, and along the long sides, around 4 or 5 each (I don’t remember the exact number). On natural ground, I stacked 2 to 3 slabs on top of each other (our plot is slightly sloped). I only removed the turf and a bit of soil to match the height and leveled the slabs. It held up very well. The container remained there for about 1 year. It has now been placed the same way on my son’s property for 2 years.