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Alternative foundation - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Alternative foundation

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  • Alternative foundation

    Hi all,

    I am starting to plan my oven in Copenhagen, Denmark. I've seen a guy in a blog doing a foundation just with concrete blocks (in Danish: Pizzaovn som Land Art). Dug down 18" and placed concrete blocks on top of each other like you would do on top of a "normal" pompeii plans foundation slab.



    Is there a reason this is not more used? Denmark is cold in winter with some frost (think Massachusetts weather) so that has to be accounted for. Usually in Denmark you say 36 inches below ground for frost-proofing a foundation.

    It seems rather easy to me to do like the picture but I am wondering if the normal foundation slab would be a better choice.

    David

  • #2
    Re: Alternative foundation

    dabstar;

    I was thinking of doing the foundations in this way as well, however, on reading more about the reason for a slab foundation I believe it is to disperse the weight of the oven over a larger area and also to keep everything on the same plane i.e. even if the slab moves a bit the dome and oven floor move with it evenly and remain flat.

    The problem with perimeter foundations is that if one area of the foundation moves it is likely to cause distortion of the oven floor causing stress on the dome and resulting in cracking.

    So you would need to ensure the foundations where absolutly stable.

    After building quite a few retaining walls with deep foundations I can tell you there is no way to eliminate movement complete.

    Paul
    Last edited by Muscats; 04-24-2010, 06:54 PM.

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    • #3
      Re: Alternative foundation

      Thanks for your reply. I have decided to go with a traditional foundation slab. Excavation for it started this weekend. See more at http://www.fornobravo.com/forum/f8/d...ild-12774.html

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      • #4
        Re: Alternative foundation

        Sounds like a safe move.
        I notice on your build forum that you are planning to hand mix the concrete. Yes, you can use it for the slab, cores and hearth floor. You will need to get some sand in addition to the gravel/aggregate. The portland cement should have mixing ratios on the bag if it is anything like Australian packaging. It is easy to mix the concrete in a wheel barrow with a chipping hoe it just a lot of hard work.

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