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Topic: Retaining wall with huge granite block, Foundation issues< Next Oldest | Next Newest >
jaysettpav
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Posted: 18 Jan. 2020,19:07 QUOTE

Forgive me for sending the previous post. I was searching previous posts with default setting which seems to be limited to one month old posts.

In my previous post, I mentioned about the fall away from the house. when slope is towards the house. If I go with this option, there will be about 30cm or so of difference  in height so I think a retaining wall is necessary. I am not a brick layer so I thought about flags on sides but this requires the use of concrete so I  thought about placing large blocks (1m long, 40cm high and 30cm wide). I thought this can function as a sitting area as well. I was wondering whether the foundations, namely the sub-base and bedding should be different to the rest of the patio? Driveways are designed to support cars with a much smaller surface area (tyres), I thought sub-base which is thick enough for a driveway would be adequate.

The other issue is perhaps the stability of it. I cannot imagine someone kicking it over but as a precaution, should it lean on to the soil rather than rest vertically?


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Tony McC
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Posted: 20 Jan. 2020,13:02 QUOTE

Blocks of that size definitely need a concrete foundation otherwise they *will* settle.

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