in toronto wanting to build a 7 x 11 x 9H man cave with furniture and other items inside. i am confused whether to build it with piers set on gravels. or should i have concrete piers 4 ft below the frost line? of course cost is a factor. but then i don't want to overkill it. and i am worried the shed might move around under its own weight or winter. can the pro give me some inputs. very much appreciated it!!!
First I believe 10x10 is your max size of shed but u have to figure in whether it's a temporary structure or permanent. Temporary u can put on top of gravel and blocks but if u are to maintain it for years to come I would pour a pad or post it under ground.
In Alberta accessory buildings under 10m2 (100 sq. ft.) are specifically excluded from the Code; however they may be subject to development regulations, setback requirements, etc. Children's play structures are also not addressed in the Building Code. Probably your rules are the same however confirm with your municipality.
You would therefore be permitted to put down a gravel bed and attach the building to pressure treated timers for example. Larger than 10m2 and you would be looking at a concrete slab (like a detached garage) with anchorage requirements to connect the walls and foundation or alternatively an engineered foundation if piles were being used.
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