Dug submitted this idea :

1. I know it is made from concrete panels about 2m tall x 1m wide x
0.03m thick, but that is about it. Are they reinforced? And more
generally does anyone have an idea as to how they are put up and
therefore can safely be demolished?

They are reinforced with a hardened steel wire of around 3/16" each
will weigh around 2cwt.

Take the roof/front off first, then work back panel by panel along the
sides. When you get to the final panel each side, leave one in place as
a brace, then tackle it from one side and then along the back until
just two panels in the corner support each other. Two people should
cope up to that point, but you will propably need three at the final
corner. The panels generally use a tongue and grove, with a pair of
bolts to and bottom.

If you are thinking of breaking up the panels, they break quite easily
with a tap from a sledge hammer, however the reinforcing will need to
be exposed and cut. A small angle grinder with cutting disk will cut
the steel easily.


2. The area in which I am working in is restricted and I can only
pull it down from the inside. I want to know if a 1.5 ton machine, with
breaker will be able to handle it? I should be able to get decent
purchase on the top of the section with the bucket and lever the panels
down, but ultimately the answer to this one may rely on whether the
concrete sections are reinforced. If they are reinforced they will be a
real pig to move.

I took one down in less than four hours by hand with two helpers,
without damaging any of it, why not take it down - perhaps even resell
it?

I am sure the 3 ton machine would be capable of demolishing both the
garage and the base, but it would obviously cost more to hire and would
be a bit of a squeeze in the driveway.

What would be the smart excavator choice, based on the info provided?

One the garage is out of the way, the base might or might not be more
difficult. I have seen them easily broken up using nothing more than a
scaffold pole and a sledge hammer. You lever the base up, then wallop
it with the sledge, breaking it into smaller and smaller sections until
handleable. Another way would be to use an electric Kango.


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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk