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Cement conversion - Forno Bravo Forum: The Wood-Fired Oven Community



New Forno Bravo Forum Feature

Forno Bravo Forum Community,

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.

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.

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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Cement conversion

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  • Cement conversion


    I'm planning on pouring the hearth myself. Renting a mixer from home depot. Put the mixer on a few cinder blocks with plywood underneath for a base. Now the conversion. How many 60 lbs bags would I need of cement would I need to do a hearth of 5x6' four inches thick? I'm going to be using the cement bags already mixed up so I only need to add water.


  • #2
    Re: Cement conversion

    The Quikrete site has a calculator here:

    QUIKRETE® - Quantity Calculator


    • #3
      Re: Cement conversion


      Great tool!


      • #4
        Re: Cement conversion


        It looks like it's not even feasible for me to do this in the timeframe required. I called quickrete and they said I have 1 to 1.5 hour to work with. At 26 bags (60#) with a 3 minute mix time(That's what they suggested) that comes out to 1 hour and 18 minutes. Then there's the time to load the mixer and put water in it. It looks unfeasible. Anyone know any better? I know people are doing it but how are they beating the setting time before it gets hard?


        • #5
          Re: Cement conversion

          Best to work with another helper, whether you use the mixer or wheel barrow. One person mixes the concrete while the other spades and tamps the freshly poured concrete. It's also best to do this on a 'cooler' day or at least wait til later afternoon to start mixing and pouring.

          My 34" WFO build

          Weber 22-OTG / Ugly Drum Smoker / 34" WFO


          • #6
            Re: Cement conversion

            If you have a couple of good friends it is not too bad. Put a little water in the mixer first then put the bag across the opening and split it in the middle with a utilitily knife and it dumps in pretty easy and quick. Add water while it mixes and it will be ready to pour in 60 to 90 seconds.

            Fill half a 5 gallon bucket at a time and with two people lifting and pouring in the forms and it goes pretty quick. This is one place you need a helper or two to save your back.
            Scott -

            My projects: http://www.facebook.com/#!/scott.kerr.794