#11  
Old 10-13-2007, 06:20 PM
Journeyman
 
Join Date: Oct 2006
Location: Adelaide, Australia
Posts: 257
Default Re: How many firebricks??

When doing my initial calculations, I was unaware that firebricks differ in size around the world, and the FB plans are based, I think, on a different size to those available here in Oz. Plus it depends on whether you're going to taper the bricks, and end up with a smaller internal brick face.

The following scenario for my build may help others in this predicament:
Internal Dome Radius = 550 mm
Internal Dome Area = 2 x π x 550 x 550 = 1,900,664 mm2
Less Opening Size = 580 x 400 = 232,000 mm2
Nett Dome Area = 1,668,664 mm2
Internal Brick Area = 95 x 63 = 5985 mm2
Brick No's = Nett Dome Area divided by Internal Brick Area = 279
So 140 whole bricks would be required.
To this, you have to add floor bricks, opening and vent bricks, which will vary according to your design.

Notes:-
  1. Opening Size is the area of the opening where it intersects with the dome internally - not the 'mouth' area through which pizza will one day be pushed. So it's a bigger dimension.
  2. Internal Brick Area is the area of the bricks after you've cut tapers (if you intend to do this). You'd need to have some idea of the reduction from outside to inside faces to calculate this. My dome bricks are 115mm x 75mm on the outside, and this degree of taper over the 115mm wall thickness (to 95mm x 63mm on the inside) forms an 1100mm (43") dome almost exactly, with minimal mortar thickness.
Hope this helps. Come back to me if you have any queries.

Cheers, Paul.
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  #12  
Old 10-13-2007, 07:28 PM
Serf
 
Join Date: Mar 2007
Location: Glengowrie, Sth Australia
Posts: 15
Default Re: How many firebricks??

Hey Hendo,

An excellent set of calculations. I knew you would come up with a precise calculation. Keep up the good work as I am in your footsteps.

Cheers

Wookie
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  #13  
Old 09-02-2008, 11:18 AM
Serf
 
Join Date: Sep 2008
Location: Quincy, CA
Posts: 2
Default Re: How many firebricks??

Dusty,

where is that company in Sacramento. I'm just starting to build my oven and live near Sac.

thanks, Frenchy
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  #14  
Old 09-02-2008, 11:21 AM
Serf
 
Join Date: Sep 2008
Location: Quincy, CA
Posts: 2
Default Re: How many firebricks??

great advice
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  #15  
Old 09-02-2008, 11:46 AM
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Join Date: Sep 2005
Location: Carson City, NV
Posts: 2,832
Default Re: How many firebricks??

Quote:
Originally Posted by frenchy View Post
Dusty,

where is that company in Sacramento. I'm just starting to build my oven and live near Sac.

thanks, Frenchy
H.C. Muddox - H.C. Muddox

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  #16  
Old 09-03-2008, 05:10 PM
Master Builder
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 575
Default Re: How many firebricks??

Frenchy,
Muddox is just north of Jackson hiway on Bradshaw road. Do you live in Sutter Creek? if so, very handy location for you.

I responded to your message and e-mail with all the details.

Have fun. My oven is done and we just love it. It was alot of work, but if I ever move, I will certainly do it again.

dusty
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  #17  
Old 03-18-2010, 09:43 AM
Serf
 
Join Date: Mar 2010
Location: Placerville, CA
Posts: 17
Default Re: How many firebricks??

Apparently Muddox gets contacted all the time regarding the "seconds". Although they were very nice about it, they made it clear that they no longer keep the blemished bricks because it is not worth their time to salvage the few bad bricks from each run.

Bruce
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