Double garage foundation query


Postby karl hurrell » Wed Jun 17, 2009 5:54 pm

Hello,

This is my first post so be gentle with me lol.

Im building a 7 x 7m garage. I was doing a cavity wall and was advise to do the foundations 600mm wide and 800mm deep using an ST3 concrete. Im now doing a single block with piers. Can anyone suggest what width and depth foundation I should use, Im presuming it will be smaller.

Also how thick should my hardcore be for the oversite?

Thanks in advance

Karl
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Postby stoneyboy » Fri Jun 19, 2009 8:33 pm

karl hurrell,
The depth and size of you foundations will depend on sub-soil conditions. If your garage is sited on made-up ground the foundations will need to be a lot wider and deeper when compared with those if you hit bedrock.
Hardcore depth will also depend on soil conditions - make sure the hardcore is well broken up and compacted.
end
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Postby bd3cc » Sat Jun 20, 2009 10:46 pm

Presumably your area BC are involved: if not ask them as they will know the relevant factors in your area
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