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Old Oct 9, 2004 | 03:35 PM
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Lee Reynolds
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From: south yorkshire
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I would advise you NOT to use a single skin for the foundations. Be better with a footing block OR normal 215x450x100mm breeze layed flat. A single skin isnt strong enough.

Yes 4:1 is fine, and it wants to be at least 175mm deep and 450mm wide.
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