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Dome spreadsheet calculator - Forno Bravo Forum: The Wood-Fired Oven Community

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Dome Installation Video - Casa / Premio / Modena

Hello,

For many of you who bought a modular oven, you may have asked how we put the domes together when we build them. For those of you considering one of our ovens, we shot a video to make your install easier.

Check it out on our You Tube Channel.

https://www.youtube.com/watch?v=-7q7...jSniYogfUra06Q

If the link doesn't work, simply go to You Tube and type Forno Bravo Channel. The video title is How to Set your Forno Bravo Oven Dome Pieces.

Thanks for participating in our Forum. We will have more video content available soon.
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Dome spreadsheet calculator

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  • Dome spreadsheet calculator

    This may (or may not!) be my contribution to the forum. After quite a bit of futzing and relearning of trigonometry, I have put together an Excel spreadsheet that can calculate most of what you need to build a dome.

    User only needs to input the diameter of the dome you want to build, distance of the IT pivot from the floor, and standard brick dimensions - and the spreadsheet will calculate the number of courses, height for each course, bricks per course (ignoring the arch!),the jig settings (assuming a twist and tilt approach), and the length of the IT. It also gives a rough count of bricks that will be needed for the dome.

    The only other thing you might want to enter is the width (at the outside) for the bricks in each course. That is builder preference.

    Big qualifier is that the spreadsheet assumes that the builder is using a fixed length IT. You want to change the length during the build, I am not able to deal with that one.

    Anyway - the entry cells are in orange, all others are calculated.
    e3a88f9b6f1246d62fb4a083aabf64fa.zip

    Update as of 8/5/2013: I just uploaded a new version of the calculator that includes angle calculations for both styles of jigs
    1) A "chipster" style jig where the brick is tilted inward at an angle from the side as shown in this post
    http://www.fornobravo.com/forum/f28/...ble-16780.html
    2) A "Hendo" style jig where the brick is tilted in from the back as shown in this post.
    http://www.fornobravo.com/forum/f28/...tilt-2802.html

    IMHO, the first approach is far more straightforward and easier to cut with a 10" brick saw. This is based on my experience going with the second...

    Edit:7/31/14: Added a google docs version. Here is the link
    https://docs.google.com/spreadsheets...it?usp=sharing

    Happy Cutting!
    Dennis
    Attached Files
    Last edited by deejayoh; 07-31-2014, 05:47 PM. Reason: I updated the spreadsheet version to include angles for a Chipster-style jig in addition to a Hendo-style jig
    My build progress
    My WFO Journal on Facebook
    My dome spreadsheet calculator

  • #2
    Re: Dome spreadsheet calculator

    Deejayoh,

    Very impressive work. What I had thought was a good idea you turned into reality. This will really help the next generation of builders. I wish it had been available when I started. I plug in some numbers from my build and found your spread sheet matched for the most part since I had some variables that skewed a perfect build. Congrats on a contribution well done..............

    Comment


    • #3
      Re: Dome spreadsheet calculator

      There is too much lightning for me to measure presently, but the calculations based on my 36" diameter Pompeii oven and IT specs are really close. I am working on course 6. I'll measure carefully tomorrow.

      Thanks! Don

      Comment


      • #4
        Re: Dome spreadsheet calculator

        Thanks Deejayoh....... I'm still to get my base finished before I get to dome but have tried out your spreadsheet
        Cheers
        Damon

        Build #1

        Build #2 (Current)

        Comment


        • #5
          Re: Dome spreadsheet calculator

          Hi
          Can you check the zip file , tried to open , comes up with invalid or corrupted
          Best Grant

          Comment


          • #6
            Re: Dome spreadsheet calculator

            Worked ok on my smartphone
            Cheers
            Damon

            Build #1

            Build #2 (Current)

            Comment


            • #7
              Re: Dome spreadsheet calculator

              I'd really like to see the spread sheet but I also could not unzip, I also error out with invalid or corrupted.

              Comment


              • #8
                Re: Dome spreadsheet calculator

                Works here (excel 2003)

                Comment


                • #9
                  Re: Dome spreadsheet calculator

                  Got it!, I just don't have the latest version of Excel, I had to download a Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File Formats.

                  Download: Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint File Formats - Microsoft Download Center - Download Details

                  Once I did this everything was fine.
                  Thanks for the work put in on this spread sheet it will help tremendously when I get started on the dome!!

                  Comment


                  • #10
                    Re: Dome spreadsheet calculator

                    Deejayoh and all,

                    Thank you all for your input and participation in this forum. As a newbie,
                    ( hoping to begin construction in the next few weeks...) there's a wealth of resources, talent and encouragement here...


                    Regarding hearth base placement within the dome, FB instructions note two options: One method places dome over hearth base, another suggests having dome surround the firebricks.

                    If one were to choose to place the bricks 'inside' the dome perimeter, how do you cut the slight radius required for each brick?? ( or is it a matter of scoring and chiseling...)
                    Last edited by Tomweb; 08-23-2012, 01:03 PM.
                    Tweb

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                    • #11
                      Re: Dome spreadsheet calculator

                      TomWeb,

                      It can easily be done with a Harbor Freight wet saw. You just shave small cut at a time. It is well worth the couple hundred dollars for the wet saw when building a WFO.
                      Attached Files

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                      • #12
                        Re: Dome spreadsheet calculator

                        That is awesome! well done.
                        Now if it would cut bricks and lay them too?
                        Wish i would have had the sheet during the build, it would have really helped and will help the future builders out there. You must be a "closet" bean counter.
                        Thanks for doing this.
                        Tracy
                        My Progress:
                        http://www.fornobravo.com/forum/f8/t...ild-17324.html

                        Comment


                        • #13
                          Re: Dome spreadsheet calculator

                          Beehiver, thanks for the pic and very nice work

                          I figured there was a HF saw in my future and you're right...If I'm going to make the long-term investment in a WFO and slow food I don't want to be looking back on a year saying " I wish I would have....."
                          Tweb

                          Comment


                          • #14
                            Re: Dome spreadsheet calculator

                            Hello all
                            Still in the research portion of my project. Sounds like this tool is just what one needs.
                            Not clear what "fixed length IT" means. Any chance someone could explain?
                            Thanks very much.

                            Comment


                            • #15
                              Re: Dome spreadsheet calculator

                              The IT is the "indispensibile tool". Search for that and you'll find many examples. Length is just what it sounds like - the distance from the pivot point to the brick facing edge of the tool
                              My build progress
                              My WFO Journal on Facebook
                              My dome spreadsheet calculator

                              Comment

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