#11  
Old 05-01-2011, 02:36 PM
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Default Re: My Modified Barrel Vault in Texas

I was hoping to see it finished as it is Tom.....
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  #12  
Old 05-01-2011, 03:30 PM
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Default Re: My Modified Barrel Vault in Texas

Reconsider what?
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  #13  
Old 05-01-2011, 04:43 PM
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Default Re: My Modified Barrel Vault in Texas

Sorry, I am in the middle of cooking pizza. I will be done in a little while and post again.
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Old 05-01-2011, 05:36 PM
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Default Re: My Modified Barrel Vault in Texas

First, I will assume you didn't permit it, since it is built hard up against the house. Second, you will probably want more insulation on the back wall, and possibly on the sides as well. It is hard to tell from the pic, are those split firebrick on insulating blanket, or are they inset? You should also make the arch in running bond and temporarily brace it until you figure out some way to permanently do so (like filling the "house" with a perlcrete mix instead of loose fill).
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Old 05-01-2011, 06:56 PM
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Default Re: My Modified Barrel Vault in Texas

Permit? I'm off the grid. After all, I'm building a wood-fired oven. Anyway, not house- garage, with air gap between brick and insulation and rockwool on the other side of the brick. Full bricks for floor set on top of 2" ceramic fiber board, on top of 4" block. Planned to do a 2" concrete cladding on top of the vault for additional heatsink, and perlcrete on top of that. Running bond would have been impossible for me to do, advancing the arches one at a time from the rear. Thanks for the input though. I will no doubt heavily insulate this.
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Old 05-01-2011, 07:01 PM
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Default Re: My Modified Barrel Vault in Texas

You don't want or need the 2" cladding.
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  #17  
Old 05-01-2011, 07:13 PM
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Default Re: My Modified Barrel Vault in Texas

Fire brick is enough to hold the heat? I'm good with that. Now, why the bracing? I'd need a sledge to break this thing up as it sits now. Heat Bond really sets like a rock.
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Old 05-01-2011, 07:32 PM
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Default Re: My Modified Barrel Vault in Texas

Because arches have outward thrust, and are not able to self-support the thrust, especially on a stack bond single wythe.
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Old 05-01-2011, 07:51 PM
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Default Re: My Modified Barrel Vault in Texas

Here is how I managed it, note that this is a specific type of masonry construction devised just to allow this type of vaulting (Guastavino tile - Wikipedia, the free encyclopedia). It is double wythe, and I used the base 2 courses to absorb the lateral load, keying in the inner layer and using a parge coat to add mass and act as a tensioning member.





As yours is built, the entire structure relies on the ability of the mortar to resist tension when it is designed to be used in a compression mode. Any cracking, which is natural, will lead to the failure of the arch.
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  #20  
Old 05-01-2011, 09:57 PM
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Default Re: My Modified Barrel Vault in Texas

So why wouldn't concrete cladding, especially if fiber reinforced, be beneficial? Seems it would provide the missing structure.
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