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Posted to uk.d-i-y
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easier dig 2m foundations
In article .com,
says...
Anyone know of a method of digging deep foundations easier than
mini-digger in a limited space ?
For example, I need some 2m foundations which is quite deep, liable to
trench collapse, and
is near a deep sewer, may need shuttering etc.
I can imagine digging say the bottom metre using some sort of
hole-digging device / big
corkscrew or whatever, producing what you could call mini-piles. Pour
each hole individually,
allow to set, dig next one etc. I would just need a suitable device.
I'm sure I've seen such a thing
on the back of a tractor. A 2m trench seems deep, but a 2 meter "hole"
does not, particularly. Any thoughts ?
I suppose you could use piles if the foundation was properly designed to
use them (although they'd probably need to be a fair bnit deeper), but
piling is a fairly specialist operation and in no way a straight
substitute for normal foundations. One of the features of a strip
foundation is that the concrete is a continuous lump - even with a
simple trench full of concrete you can cause problems by not pouring in
one go.
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