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Arch too tall? - Forno Bravo Forum: The Wood-Fired Oven Community



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Arch too tall?

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  • Arch too tall?

    Everyone I think I may be slightly boned. And I need to help to determine how screwed over I am.

    I am building a 34 inch igloo style oven. I meant to do a 10 inch high arch, but screwed up and ended up with about a 12 in arch.
    I would really like to not have to pull out the arch and all pieces that attach to the arch.

    I am thinking right now to leave as is. But i'm not sure of how bad it will be when I do some cooking.

    What are the possible issues of having the arch too high?

    If it doesn't work, i'm thinking building a new half width arch, on the inside that mortars to the current arch.

    Any and all suggestions are welcomed.

  • #2
    It is not the ideal ratio, but IMHO, since the arch is done is to leave as is. Currently you are at 70.5% vs suggested ratio of 63-65% but I have seen higher arch ratios as well. Move on.
    Last edited by UtahBeehiver; 10-01-2018, 08:14 AM.
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    • #3
      Assuming we are talking hemispheres and semicircles here, you've got a 12" arch and a 17" inside dome for 70.5% ratio. As long as it isn't ridiculously wide, I say leave it and move on.

      P.S. assuming you are doing a hemisphere your 34" dome will have a height of 17" inside. A 10 inch arch would have been 59%. A touch on the low side.
      Last edited by wotavidone; 10-01-2018, 02:45 PM.