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Concrete Slab Weight Load - 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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Concrete Slab Weight Load

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  • Concrete Slab Weight Load

    Hi,

    I have a question that im hoping someone can help with.
    I want to build a base to raise my oven on , hoping to build a few pillars of bricks with a concrete slab on top and then build the oven on that.

    My question is , how thick of a concrete slab will I need to cast to be able to support 300-400kg ??

  • #2
    Re: Concrete Slab Weight Load

    We suggest a 3.5" (90mm) support slab of rebar reinforced concrete when it's supported by masonry walls on three sides. With less support, you may want a thicker slab. You say "a few" brick pillars. How many? How big? Where positioned?
    My geodesic oven project: part 1, part 2

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    • #3
      Re: Concrete Slab Weight Load

      Have you considered piling instead of a slab to support your pillars?

      Get a post hole digger, dig down 4 feet.

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      • #4
        Re: Concrete Slab Weight Load

        I did what you're considering. I have my 3.5 inch slab supported by 4 pillars. I have them a little towards the back, centered under where I thought the center of gravity is. I used a couple more re bar, particularly over the pillars to counter any "punch-through" of the pillars. Just use the re bar to transfer the load from the pillars out.
        I'm within a few hundred pounds of my final build weight and with me up on the slab walking around it doesn't flex or crack at all.

        Mark

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