As in you have experience of this style?
These would be above ground with no external support.
I used to work with contractors installing these for highways equipment.
They were renowned for collapsing and causing problems. Yes it was usually an installation cock up but they weren't very robust.
Cheers that answers a lot of my questions
@Grumpy_Git started
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As in you have experience of this style?
These would be above ground with no external support.