Foundation depth/cost in Hamilton

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Posted by: from Millgrove
2/5/2017 at 12:41:34 PM

Looking for some advice on a new home foundation in millgrove area with high rock table. Foundation will be 1800sqft, we prefer the idea of slab on grade to save on costs. How deep does a slab on grade foundation have to go? Any idea of rough cost?

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Date/Time2/5/2017 at 6:08:20 PM

I have to be honest Mike , slab on grade foundations are not normal prictices for a home in Canada , garage yes not a house foundation due to weight and frost as most places frost is 4-6 ft in sask its 8ft , alberta its 8ft , in bc its 4ft you need a minimum of a 4ft base then you can use lumber for the other 4ft but most averege foundations are 8 ft to dissapate the weight of the home you cant be cheap on supporting the weight or it will fail then regret not doing it right the first time hope this helps you an also see the specks from CMCH or google

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Date/Time2/6/2017 at 4:54:46 PM

Hi Mike,

I cannot speak with authority, but I know in the Port Colborne area, there are slab on grade / crawl space houses built directly on the rock with only a foot (maybe two) of backfill. I know this because when we need to ground a new service and we have to bury all of our stuff in concrete because it does not meet the requirements of the electrical code for depth.

I expect there must be similar situations in the homes near where you want to build. Go around an knock on your neighbours and ask to see what they have done. Don't forget to bring a cup of sugar.


John Kuehnl-Cadwell

Master Electrician

Datawise Solutions Inc

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