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  #101  
Old 11-18-2011, 09:28 AM
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Location: 12 minutes from Snowbird UT
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Default Re: Continued Design Ideas

I have several questions about the landing and opening dimensions specifically as it relates to oven size, fire performance and venting efficiency.

Here's an ortho of the landing.



And an elevation.



And now the dimensions.



The oven floor is 30" wide x 40" deep and the vault is 17" high. The 10.5 inch oven opening is 62% of the oven height.

Now the questions.

1. Given my oven dimensions, do you think a 17" opening is wide enough? Are there any fire/venting performance issues caused by this opening dimension?

2. I've made the brick opening 3/4" lower than the oven opening. Is this enough difference to forch the smoke up into the vent and not out the opening? The top of flue is 3 feet above the vent opening.

I'm starting to cut firebricks so I would greatly appreciate your response. Thanks in advance.

Craig
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  #102  
Old 11-18-2011, 10:17 AM
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Default Re: Continued Design Ideas

The outer opening needs to be bigger than the inner opening or you will be making a 2 part door or a very awkward insertion.
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  #103  
Old 11-18-2011, 12:12 PM
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Default Re: Continued Design Ideas

Thanks TS! I hadn't even considered a door. Your response prompted me to design one and to learn how to do an animated GIF.



I'm thinking of casting it out of perlcrete with wooden handles connected by embedded bolts somehow.



Craig

Last edited by clofgreen; 11-18-2011 at 12:16 PM.
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  #104  
Old 11-18-2011, 12:18 PM
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Default Re: Continued Design Ideas

Quote:
Originally Posted by clofgreen View Post
I'm thinking of casting it out of perlcrete with wooden handles connected by embedded bolts somehow.
It wouldnt last 5 minutes, it would fall apart.
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  #105  
Old 11-18-2011, 12:28 PM
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Default Re: Continued Design Ideas

Quote:
Originally Posted by brickie in oz View Post
It wouldnt last 5 minutes, it would fall apart.
Ah, yes, Perlcrete is good in compression, not tension. Wait, metals are good in tension. Maybe I'll cast the perlcrete then dip it in a vat of molten steel. Now I'll just have to go find a vat of molten steel, unless someone has already figured out a good door recipe.

Thanks Brickie.
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  #106  
Old 11-18-2011, 12:41 PM
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Default Re: Continued Design Ideas

Why reinvent the wheel?
http://www.fornobravo.com/forum/f28/...oor-15671.html (Insulated oven door.)
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  #107  
Old 11-18-2011, 12:49 PM
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Default Re: Continued Design Ideas

It's a thing of beauty! Thanks for the link.
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  #108  
Old 11-18-2011, 12:53 PM
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Default Re: Continued Design Ideas

Most ovens have the outer arch slightly larger than the the ineer one so you can fit the door in place. Your arrangement looks like it would be awkward to operate.
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  #109  
Old 11-18-2011, 01:02 PM
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Default Re: Continued Design Ideas

Larger as in taller? I thought I read somewhere that the outer opening needed to be lower than the inner to keep smoke from escaping.
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  #110  
Old 11-18-2011, 01:18 PM
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Default Re: Continued Design Ideas

Usually both wider and taller. You can make it lower but it will be a bitch to get the door to fit.
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