Free Standing Deck Code. Anonymous you are correct that deck footings near the house [may] have to be placed at the same depth as the footings for the house itself. (see note #1) what is the required depth for the foundation?
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Minimum post size is 6x6 nominal and maximum post height shall be. Ottawa allows for free standing decks using common concrete deck blocks up to 60 high despite this section in the obc. A building consent is required for any deck or balcony that is 1.5 m or more above cleared ground level.
The idea behind any shallow footing is that the structure can rise as the ground below it freezes and expands, and then it can settle back down as the ground thaws.
Overall deck length shall be equal to or less than overall deck width. Of deck or shed per footing. Wood decks that are attached to the house to resist lateral forces. Before you even draw up plans for your freestanding deck, check out the building code in your area.
