Casting a dome oven Other Oven Types Discuss Casting a dome oven in the Pizza Oven Design and Installation forums; i just finshed casting a 37" by 18" , 2 1/2" thick oven i used the formula that dmum posted ...

[JoeyVelderrain]

i just finshed casting a 37" by 18" , 2 1/2" thick oven
i used the formula that dmum posted and it was bang on. i used all of the 12, 50lb bags of concrete.
you can check it out here:
http://www.fornobravo.com/forum/f43/...uild-7866.html (My Cast Refractory Oven Build)
plenty of pictures.

let me know if you have any questions that i maybe can help with.

[sacwoodpusher]

((4/3)Pi Ro Cubed - (4/3) Pi Ri Cubed))

Volume of outer sphere -volume of inner sphere divided by 2 because you have a hemisphere.