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  #21  
Old 02-21-2012, 09:23 AM
WJW WJW is offline
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Default Re: Barrel Vault in So. Cal.

Anyone know if you can make up a refractry concrete by using an agregete, fireclay, lime, etc? The angle iron always has seemed like a weak link to me. I'm srongly leaning toward a flat arch (maybe by cutting bricks on each side), or a cast lintel.

Bill

Last edited by WJW; 02-21-2012 at 09:25 AM.
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  #22  
Old 02-21-2012, 07:48 PM
WJW WJW is offline
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Default Re: Barrel Vault in So. Cal.

O.K. ...some design changes today. Based upon comments by Alan I've decided to drop the little trangular door stops and am planning to do an arch instead of angle iron.





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  #23  
Old 02-22-2012, 02:58 AM
Peasant
 
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Location: Valencia, Spain
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Default Re: Barrel Vault in So. Cal.

WJW: If you want to use steel frame safe you must consider the thermal expansion of the steel that is around 12 micron per Celsius degree. So for 400șC it is 400* 12*L micron (divided per 1 million for get milimeter). Suppoused 500 mm initial steel length and temperature increment of 400șC the expansion is 2,4 mm (aprox 1/100 inch). So the trick is leave such expansion in the ends of the steel bar an let it "move" freely. As Brickie in Oz has done wrapping the frame in ceramic foil or I would sugest (for this area) a silicone cord in both ends of the bar and maybe (for perfectionism) around the edges as it also expands but now is around 1/10 of the above length (supposed 50 mm wide and high bar). There are silicone foam ribbons that suit perfect for this appilcation.

Regards

Last edited by Dmendo; 02-22-2012 at 03:11 AM.
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  #24  
Old 02-22-2012, 11:43 AM
WJW WJW is offline
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Default Re: Barrel Vault in So. Cal.

Thanks for that!

I think I've decided to go with the arch though. I like the look better.

Bill
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  #25  
Old 02-22-2012, 01:14 PM
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Location: Townsville, Nth Queensland,Australia
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Default Re: Barrel Vault in So. Cal.

WJW, very nice solution for the door rebate.
Demendo, exposed ceramic fibre in the oven is not a smart solution IMO (read the MSDS on the stuff)
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  #26  
Old 02-22-2012, 04:29 PM
Peasant
 
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Default Re: Barrel Vault in So. Cal.

what is MSDS?

Regards
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  #27  
Old 02-22-2012, 05:03 PM
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Default Re: Barrel Vault in So. Cal.

MSDS Materials Safety Data Sheet. There is one for every product.
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  #28  
Old 02-22-2012, 07:08 PM
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Default Re: Barrel Vault in So. Cal.

You should offset the doorway to one side or the other. Other than that, looks great.
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  #29  
Old 02-22-2012, 09:37 PM
okn okn is offline
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Default Re: Barrel Vault in So. Cal.

What are the benefits of offsetting the doorway? Would you recommend offsetting it completely to one side? IMO it seems that an offset would mess up the symmetrical look of the oven.
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  #30  
Old 02-23-2012, 05:12 AM
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Default Re: Barrel Vault in So. Cal.

Are you building it to look at it or to cook in it? You will be having a live fire in there when cooking pizza, and if the opening is offset, you will have room on one side for the fire and easy access to the cooking surface. Fire in the back of the oven is not nearly as efficient as it is on the side. I left a small revel on mine, next time the right side of the arch will be flush with the wall.
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