Hey all

I am planning to build a neapolitan pizza oven and am trying to work out how many fire bricks I need. The bricks are 230mm x 114mm x 76mm.

The pizza oven will be 1150mm internal diameter (1380mm external diameter after adding the depth of the bricks), this number comes from deciding on a 1100 oven then working out for the floor that there would be less small pieces and waste with 1150mm as the bricks are 230mm x 114 which both go into 1150 evenly in the dimension they are layed .

I am planning one row of soldiers and the arches will be 500mm x 240mm plus the width of the bricks so 730mm total width, the soldier bricks are 76mm thick and the circumference of floor is 3612 minus the arch (730) equals 2882 which I work out to 37 bricks 2882/76=37 Soldiers

The dome will be 380mm high (which is 33% of the diameter) from floor to the highest point, the soldiers will sit outside of the floor so will lose 76mm in height so the remainint height above the floor will be 154 so the cap height will be 226 above the top of the soldiers.

Calculate the sufrace area of the dome using formula Surface Area = π(r

Surface area of the end of a brick is 76*114=8664mm

1651839/8664 = 191/2 = 96 Dome bricks cut in half

The floor area is 1038690mm

I am buying the 2 arches so no calculation required.

So I make it out to be:

Soldiers = 37

Dome Cap = 96

Floor = 49

Total = 182

I expect there to be mistakes etc so would probably order 192

What do you think, does this sound correct?

I am planning to build a neapolitan pizza oven and am trying to work out how many fire bricks I need. The bricks are 230mm x 114mm x 76mm.

The pizza oven will be 1150mm internal diameter (1380mm external diameter after adding the depth of the bricks), this number comes from deciding on a 1100 oven then working out for the floor that there would be less small pieces and waste with 1150mm as the bricks are 230mm x 114 which both go into 1150 evenly in the dimension they are layed .

I am planning one row of soldiers and the arches will be 500mm x 240mm plus the width of the bricks so 730mm total width, the soldier bricks are 76mm thick and the circumference of floor is 3612 minus the arch (730) equals 2882 which I work out to 37 bricks 2882/76=37 Soldiers

The dome will be 380mm high (which is 33% of the diameter) from floor to the highest point, the soldiers will sit outside of the floor so will lose 76mm in height so the remainint height above the floor will be 154 so the cap height will be 226 above the top of the soldiers.

Calculate the sufrace area of the dome using formula Surface Area = π(r

^{2}+ h^{2}) so 3.14159(689^{2 + }226^{2}) = 1651839mm^{2}Surface area of the end of a brick is 76*114=8664mm

^{2}1651839/8664 = 191/2 = 96 Dome bricks cut in half

The floor area is 1038690mm

^{2}, a brick is 26220mm^{2}on the largest surface so on calculation alone that works out to 1038690/26220 = 39 but with cuts and where I can use offcuts I think it will be 40 plus 9 bricks for the archway floor (500mm x 460mm)I am buying the 2 arches so no calculation required.

So I make it out to be:

Soldiers = 37

Dome Cap = 96

Floor = 49

Total = 182

I expect there to be mistakes etc so would probably order 192

What do you think, does this sound correct?

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