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



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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  • foundation size

    I'm getting ready to build a 42" oven and have started on the foundation. I need some help in the actual foundation size. In the oven plan, for a 42' oven, a chart gives a size of 77' X 86". However, in the materials list at the back of the plans, the foundation size for a 42' oven is 80"X 94". Can someone help clear up my confusion?

  • #2
    Re: foundation size

    Not sure Barry. Go with the bigger one. Having a little extra space is better than not having enough!
    Check out my oven progress here: http://www.fornobravo.com/forum/phot...dex.php?u=4147

    See ALL of my pictures here:


    • #3
      Re: foundation size

      The best way to confirm what you need for your oven is to do the math...

      Start with the width of your oven, 42 inches;.. Add the brick in the oven wall (if you will use a 9 inch fire brick, cut in two, 4.5 inches, on each wall, two walls) 9 inches; add the amount of insulation you will use on the outside of the dome (perel? or vemicrete? or batts? of insulation) 3 or 4 inches on each side?; and then add the size of the exterior cover or wall for your oven. Will you use a stucco - igloo? or build a frame structure with 3.5 inch metal stud walls? - one on each side

      Add up all the pieces and that is the minimum width you want on your base walls, and then add a couple inches on each side for your foundation.

      You will probably choose to make the foundation deeper than it is wide. The reason is to add a bit of counter space at the front of the oven so you have a place to stage food on the way into and out of the oven.

      My suggestion is to do the math! and you are sure to end up with a foundation that will fit your oven..

      Good luck with your build and be sure to send in pictures for us to see!




      • #4
        Re: foundation size

        Barry, just to add to what Breven and Jed said, 16" concrete blocks that you buy at any Home Depot, lowes etc. are 15 5/8" long. So for a 42" oven, if you look thru the Forno Bravo photo gallery seem to almost always be 4 1/2" blocks wide by 5 blocks deep or: 70"x78". This works out good for the enclosed (dog-house style) but you could also go 4 1/2 blocks deep if you cantelever the counter out the front. I did not do an igloo style but I believe the dimensions are similar although many have done corner installations or used a round or "diamond" shaped base (with the corner cut straight for the counter or shelf) recently that look really nice and seem to take up less room in the yard.

        Also, the 70x78 info above is with using FB insulation blanket at 2-3" deep. If you rather use the vermiculite-concrete mix insulation, that has to be 4" deep so that dimension I mentioned might be another 1/2 block or full block wider and deeper. Man, I hope I helped more than confused -Dino
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