Soldier Course

[knary]

Looking through the forum I notice that some builders put an angle cut of around 20 degrees on the soldier course. Others leave the soldier course bricks complete with no cuts. What is the best approach and why? Thanks

[dmun]

I think the best approach is to avoid the soldier course entirely, and just start building your rings from floor level. The reason for the angle on the soldier course is to reduce the big slug of mortar you need when your wall turns that corner. With the half brick soldier course, you can make one cut, to get two angled half bricks. I don't recommend the full brick height plan, unless you are planning to buttress your side walls.

[Faith In Virginia]

I set my first course as a soldier with a flat uncut top. I think that if you cut your soldier course with an angle you change the direction of force on that first course. So as you add weight in the cut soldier it will have a tendency to push out at the top and be pushed away from center. The flat uncut top will keep the force straight down. Here are a few pictures of my oven built for bread more than anything else.

[phippsj]

Originally Posted by dmun

I think the best approach is to avoid the soldier course entirely, and just start building your rings from floor level. The reason for the angle on the soldier course is to reduce the big slug of mortar you need when your wall turns that corner. With the half brick soldier course, you can make one cut, to get two angled half bricks. I don't recommend the full brick height plan, unless you are planning to buttress your side walls.

Do you think it is best to build on top of the oven floor, or cut the oven floor to fit inside? It seems that building the first row directly, and ignoring the soldier course, would be best if built directly on top of the oven floor.

[fxpose]

Originally Posted by phippsj

It seems that building the first row directly, and ignoring the soldier course, would be best if built directly on top of the oven floor.

That's exactly what I did. So much easier...

[Mike D]

I thought I read on the Forum that the floor on the inside of the dome was better for 2 reasons. One, the floor was able expand and contract independently from the dome (if you gave it a small gap). Two, someone said the heat transfer was better?

Mike

[GianniFocaccia]

There is no data supporting increased heat transfer one way or the other. If you read through the scores of threads that address this issue, the only reason (however remote) to put the floor inside the dome is if a brick ever becomes compromised and has to be replaced.

[Mike D]

What about if the floor is independent, is it less likely to create cracks in the dome? As in expanding on its own and not pushing the dome as it heats up?
Mike

[fxpose]

Originally Posted by Mike D

What about if the floor is independent, is it less likely to create cracks in the dome? As in expanding on its own and not pushing the dome as it heats up?
Mike

That's a logical point you make but under actual use that's not the case, and one reason why you don't mortar the first course onto the floor.

[Mike D]

what about how the dome covers the side edge of the floor helping hold in the floor heat rather than it moving out the side? I know I am just trying to justify the extra work of doing it this way, but is there any truth to any of it?
Mike