web analytics
Pre-made foundation? - Forno Bravo Forum: The Wood-Fired Oven Community



Forno Bravo Forum Thread Message

Hello, Forno Bravo Community Forum Members!

The Forno Bravo team has heard the feedback in regards to the community forum. We wanted to take the time to re-enforce our commitment to a fully engaged Forum with professional moderation.

Our top priority as a company is to fix all forum errors and issues that you are experiencing. As we are swiftly working on these problems, we want to say that we highly value the Forum Bravo Community Forum and every single community forum member.

We have set up this thread so that every member can address any concerns, issues and questions about the forum. Please feel free to ask whatever you would like in regards to the forum; let us know what issues you are experiencing so we can work on resolving them as fast as possible. However, we stress that we would like constructive engagement, so please be specific about the issue you are experiencing.

Thank you for all of your patience and continued support.

Link to topic: http://www.fornobravo.com/community/...with-new-forum
See more
See less

Pre-made foundation?

  • Filter
  • Time
  • Show
Clear All
new posts

  • Pre-made foundation?

    So I have just been given 2 concrete slabs in excellent condition. One is 6'x5'x4" & the other is 6'x2'x10".
    Looking at the plans, if I put the 2 together it will be just a few inches smaller than what the plan calls for, but large enough to build the 42" oven on top of.
    My plan is to dig out the hole & pack sand into it until the slabs are both level & even with the ground. I realize there is a difference in width between the 2, but it shouldnt be too hard to match them.
    Any major problems with doing it this way as opposed to pouring a foundation?

  • #2
    Re: Pre-made foundation?

    I have no personal experience with this type of foundation, but I would worry about the Canadian frost heaving them in different ways, or if they were to settle at different rates, leading to an uneven foundation. Can you join them together somehow, maybe with rebar drilled into both sides? Do they have rebar in them already (i.e., are you sure they're strong enough)? At a minimum, you might want to put a thick layer of gravel under the sand and a layer of rigid insulation under the whole thing to help minimize the heaving. Here are a few related links:

    Ground Freezing and Frost Heaving - Canadian Bldg Digest

    Shallow foundations
    Last edited by dbhansen; 05-23-2008, 09:44 AM.
    Picasa web album
    Oven-building thread


    • #3
      Re: Pre-made foundation?

      I wouldn't use sand, that will hold moisture. A bed of washed stone (3/4"+ size, a couple feet deep) with drains in the bottom running to daylight (if you have a slope) or a dry well would be a safer bet. If there's no water underneath, it can't freeze.

      A horizontal layer of rigid foam insulation around the slab (buried a few inches deep) would be good too.


      • #4
        Re: Pre-made foundation?

        I think a layer of stone, covered with plastic, then sand to level is the way forward.
        I could also drill a pile or two down to fill with concrete
        Thanks for those links!