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1 strover 04-14-2013 11:06 PM

Second Large WFO in India
 
Greetings,
My first build 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?

brickie in oz 04-15-2013 12:21 AM

Re: Second Large WFO in India
 
Quote:

Originally Posted by 1 strover (Post 150287)
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. :)

1 strover 04-15-2013 04:02 AM

Re: Second Large WFO in India
 
2 Attachment(s)
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.

Sparky005s 05-29-2013 03:50 PM

Re: Second Large WFO in India
 
Any updates?

1 strover 06-18-2013 09:32 PM

Re: Second Large WFO in India
 
Quote:

Originally Posted by brickie in oz (Post 150294)
The chimney is way too small. :)

noted and size increased thanks

1 strover 06-18-2013 09:50 PM

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?

Laurentius 06-18-2013 11:53 PM

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.

1 strover 06-20-2013 08:20 AM

Re: Second Large WFO in India
 
Quote:

Originally Posted by Laurentius (Post 155468)
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.

Laurentius 06-20-2013 10:19 AM

Re: Second Large WFO in India
 
Quote:

Originally Posted by 1 strover (Post 155569)
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.

1 strover 07-01-2013 09:22 AM

Re: Second Large WFO in India
 
so some more progress made today.
guess what i am welding?

https://lh6.googleusercontent.com/-1...701_112757.jpg


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