#1  
Old 04-14-2013, 11:06 PM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Cool Second Large WFO in India

Greetings,
My first build (Large WFO in India)Large WFO in India
Now i am starting a second build.
The stats:
construction style :igloo
cooking floor dia :5 feet
internat dome hight :18 inches
dome material :fire bricks
cooking floor material: fire bricks/ soapstone( depends on availability)
insulation above dome : 24 inches porosil (EX-FOLIATED VERMICULITE)
insulation below floor from top to bottom: fire bricks 3 inches,crushed glass 3 inches,porosil and fine sand mix 5 inches, cement sheet 0.7 inches and finally 1mm of galvanized sheet metal.
chimney material :6 inch dia stainless steel pipe.

i just spoke to another supplier who can provide me with calcium silicate board should i use that for insulating the floor?
the questions i have are
1) do i have too much insulation below the floor?
2)should porosil alone be enough for insulating the dome?
3)should i go barrel vaulted instead of an igloo style as i have already built one which is larger and has been in constant operational for the past year?

Last edited by 1 strover; 04-15-2013 at 12:31 AM.
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  #2  
Old 04-15-2013, 12:21 AM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Second Large WFO in India

Quote:
Originally Posted by 1 strover View Post
the questions i have are
1) do i have too much insulation below the floor?
Ditch the glass and sand, they are not insulators.
2)should porosil alone be enough for insulating the dome?
It should be fine.
3)should i go barrel vaulted instead of an igloo style as i have already built one which is larger and has been in constant operational for the past year?
They both work fine, its your choice.
The chimney is way too small.
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  #3  
Old 04-15-2013, 04:02 AM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Default Re: Second Large WFO in India

here are a few pictures
one is a heavy steel frame i made out of 12 gauge 2x4 box section.
in the second picture you see the frame and the last made out of wood for the dome. plan to keep the last in there till the mortar dries and then burn it in the oven itself.
Attached Thumbnails
Second Large WFO in India-frame-.jpg   Second Large WFO in India-frame-dome-last.jpg  
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  #4  
Old 05-29-2013, 03:50 PM
Serf
 
Join Date: Jul 2011
Location: Northern California
Posts: 18
Default Re: Second Large WFO in India

Any updates?
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  #5  
Old 06-18-2013, 09:32 PM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Default Re: Second Large WFO in India

Quote:
Originally Posted by brickie in oz View Post
The chimney is way too small.
noted and size increased thanks
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  #6  
Old 06-18-2013, 09:50 PM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Default Re: Second Large WFO in India

Gretings ,
i havent been post any updates as i havent made any progress till date due to the summer vacations we had over the past couple of months, this is the time when my restaurant is at its busiest. i have above 4000 guests eating every day. now we have entered the monsoon season here and now we have time to build.

i had a few questions which would make it clearer for me on how best to proceed.

in the meanwhile i have acquired
200 mm (7.75 in) thick calcium silicate board which i would use as floor insulation. i know it may be overkill
300 kg of EX-FOLIATED VERMICULITE
30 bags of castable concreete mix with VERMICULITE

My question is as follows
from the bottom up this is how i plan to layer the oven
1)mild steel stand which was made pictures of which are posted a couple posts above.
2)1.5mm galvanised steel sheet
3) calcium silicate board
4) castable slab 4 inches
5)fire bricks for the oven floor.

is my layering good or should i be layering this differently?
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Old 06-18-2013, 11:53 PM
Laurentius's Avatar
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Join Date: Nov 2010
Location: Japan
Posts: 847
Default Re: Second Large WFO in India

I think (4) is not needed. If you do use it, it should be number 3, followed by Calcium Silicate board, then fire bricks. But 7.5 CSB in more than enough.
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  #8  
Old 06-20-2013, 08:20 AM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Default Re: Second Large WFO in India

Quote:
Originally Posted by Laurentius View Post
I think (4) is not needed. If you do use it, it should be number 3, followed by Calcium Silicate board, then fire bricks. But 7.5 CSB in more than enough.
thanks a ton for the reply
will having them in the order i've listed increase heating mass ?(hold heat for longer?
as i also intend to bake around 100 1800 gm loaves of bread every morning.
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Old 06-20-2013, 10:19 AM
Laurentius's Avatar
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Default Re: Second Large WFO in India

Quote:
Originally Posted by 1 strover View Post
thanks a ton for the reply
will having them in the order i've listed increase heating mass ?(hold heat for longer?
as i also intend to bake around 100 1800 gm loaves of bread every morning.
Instead of the slab, I would increase my mass by laying my firebrick hearth on their side, rather than flat.
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  #10  
Old 07-01-2013, 09:22 AM
Laborer
 
Join Date: Jan 2012
Location: India
Posts: 52
Smile Re: Second Large WFO in India

so some more progress made today.
guess what i am welding?

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