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Home & Garden > Architecture What to consider when building in permafrost

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The rules for building on permafrost have changed. Permafrost used to be permanent. However, building on permafrost today requires footings that will survive even if the permafrost permanently melts. Permafrost is defined as ground which has been frozen for two or more years. This condition is specific to northern arctic and subarctic regions, as well as some alpine areas. In the southern hemisphere, most areas which would otherwise have permafrost are occupied instead by ocean. While permafrost can extend hundreds of feet deep, it is only the top section that concerns builders. This poses...

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