I am in the early stages of planning for a 12 x 20 addition on the back of my house for an additional 2 bedrooms, single storey. The area in Lefroy that I am in is very wet. I put in horseshoe pits and they are always wet. The house currently has a really low crawlspace. Looking down my well the water level is about 3 ft down.
Due to the wetness I am leaning towards pier footings rather than dig a trench for a perimeter wall which would just turn into a moat. My dad recently used the Bigfoot system bell for footings for a deck and I am thinking to use them with their plastic tube forms instead of sonotubes due to the water situation. Access to the back of the house is restricted but a mini-hoe could get there to dig the holes. I am thinking about using a spray foam insulation under the floor.
Does this sound doable?
What is the minimum distance I can build away from the lot line?
Does anyone know of someone that can draw up the plans needed for permits?
I have completed a couple additions in Lefroy and we just finished one on the 5th line about 8 homes from the water. We used a pier system on the last one and it worked quite well the problem with this area is there is a layer of peat about 3ft below grade and it veries from 3ft to 4ft in depth. This means you would have to excavate about 7 feet down for your piers.
I would reccomennd a dig test before you complete your drawing just to make sure you have no supprizes when you start your project and additional cost that you where not expecting.
As Michel has highlighted it is very usefull to get local knowledge for your project. As an alternative to a test dig you may wish to have the soil tested for strength and quality. This will assist a structural engineer in determining the best type of foundation and depth for your project. Also, the local building department may also have information in this regard.
Kingsway Construction Inc.
Thanks for the insight guys, I'll have too look into a soil test soon. Just trying too figure out what I would need too do, I might get started this year but most likely next year.
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