32" build in Calgary, AB - pompeii neapolitan

[IH123]

my bricks are 9"x4.5"x2.625" each weighs about 3.3kg, so that's about 1850kg/m3. I cut today the spring line course ,two wedges and top taper. course#0 in diagram, I dry fit but will have to cut the hearth bricks (later soon) before I could actually dry fit everything in final position and then assemble with mortar: I noticed my cuts are pretty tight which means the inner surface edges will touch each others however the gap will be more as it goes outside, up to about 1/4" between each bricks and another at the outside. I have huge quantity of grog leftover from wet saw water and shims that I can use to reduce refractory mortar (if needed), I have 100+lbs of Thermobond 915 theoretically enough for 180 bricks at 1/8". here are the pictures:

[IH123]

one more showing inside out:

[david s]

If that is your first course of dome bricks then you will not end up with a hemisphere. It probably won’t matter but a true hemisphere should have its base at the same level with the top of the floor. This results in the radius equal to the interior height.

[IH123]

If that is your first course of dome bricks then you will not end up with a hemisphere. It probably won’t matter but a true hemisphere should have its base at the same level with the top of the floor. This results in the radius equal to the interior height.

not true for my sphere cap, true for hemisphere, see my diagram. my dome is a sphere cap not a 1/2 (hemisphere)- Neapolitan not Tuscan. its like I cut the bottom of the hemisphere to make it lower. therefore the radial faces can't be flat. the solider will fix the issue as its cut at the corresponding radial angle where the sphere cap sets on it like an arch set on a leg

[david s]

not true for my sphere cap, true for hemisphere, see my diagram. my dome is a sphere cap not a 1/2 (hemisphere)- Neapolitan not Tuscan. its like I cut the bottom of the hemisphere to make it lower. therefore the radial faces can't be flat. the solider will fix the issue as its cut at the corresponding radial angle where the sphere cap sets on it like an arch set on a leg leg

Ok, then ignore what I posted. I was looking at your plans as posted on #10 which shows a diameter of 32” and a radius of 16” and no soldier course (bricks standing on end)
Maybe I’m looking at the wrong plans.

[IH123]

Ok, then ignore what I posted. I was looking at your plans as posted on #10 which shows a diameter of 32” and a radius of 16” and no soldier course (bricks standing on end)
Maybe I’m looking at the wrong plans.

I apologize for the confusion, the oven hearth is 32" diameter /16" radius however because I needed lower dome, the dome radius would be 16 1/8 to yield 14 1/8" height instead of 16". therefore the oven have two circles: hearth D=32", dome D=32 1/4". Except hearth, all my brick cuts are based on the dome radius of 16 1/8".

I hope that clarifies.

[david s]

Ok, sorry, I didn’t see the drawing posted on post 121. Your first course of bricks (that you call soldiers) are not laid as soldiers, but laid flat conventionally and your hemisphere base is under the floor level. Sorry for my misinterpretation.
At the density you quoted for your bricks, you shouldn’t have too much trouble cutting them.