Perth 42" Pompeii - dome to flat entry integration

[Laku]

Re: Perth 42" Pompeii - dome to flat entry integration

Tapering the bricks will make it stronger.

[jab49]

Re: Perth 42" Pompeii - dome to flat entry integration

If you can build a dome, you can build an arch. You can build an arch form from plywood and lay the bricks on it as you go.

I bulit most of my arch without a form. The trick is to not rush building the arch if you don't have a form. Lay a course on each side and let it set before going on to the next course. The mortar will hold the bricks in place mostly by itself, an you only need a stick or brace (indispensible tool works well) to keep it in place. I used bricks and brick slivers to brace mine while it was going up.

Thanks Azatty and co - I'll give it a go! I will make a form, go slow and steady as you suggest. Just some process questions then:
Do you recommend that I taper the bricks for the arch?
Did you get the arch built well ahead of the dome (ie, did you lay, say, 3 chains of the dome, then built the arch, then returned to the dome?

Thanks
JT

[C5dad]

Re: Perth 42" Pompeii - dome to flat entry integration

John,

I too struggled to visualize the arch tie in and asked many questions. No problem there, that is why we are all here with different experiences, etc.

I found that my mud set really quick because I mix "hot" batches with low water. Just the nature of where and how I work - time is of the essence during a plant turn around. None the less, I would highly recommend that you look at similar builds and email the guilty parties - after all, we are all of the Forno Bravo Familia and will stick together!\

Just remember, more joints, more potential problems. However, if you look at some of the old pictures from the trips to Italy, you will see all sorts of "refractory" mudded together. Whatever works for you will work, just go light on the mortar is all most will recommend.

Best of luck!

Chris

[azatty]

Re: Perth 42" Pompeii - dome to flat entry integration

If you can build a dome, you can build an arch. You can build an arch form from plywood and lay the bricks on it as you go.

I bulit most of my arch without a form. The trick is to not rush building the arch if you don't have a form. Lay a course on each side and let it set before going on to the next course. The mortar will hold the bricks in place mostly by itself, an you only need a stick or brace (indispensible tool works well) to keep it in place. I used bricks and brick slivers to brace mine while it was going up.

[brickie in oz]

Re: Perth 42" Pompeii - dome to flat entry integration

to allow the next chain on the dome to sit on top of the angle iron.

You need to keep angle iron out of the equation, it will distort and rust.

[jab49]

I'm about to start the first course with high heat mortar. Before I do that, am trying to visualise how the dome will integrate with the oven opening. I'm going to use angle iron for a rectangular, 20" entry - I'm just not skilled enough to do an arch, unfortunately.
See attached pictures. Questions are:
1. The two (three in the last picture) vertical half bricks these will eventually be 4 to make the height of the opening - should I mortar them like normal bricks? I'm thinking it would make them stronger, and also lift them sufficiently to allow the next chain on the dome to sit on top of the angle iron.
2. Is the general arrangement as shown for the oven opening acceptable? I've left a reveal for the door. Trying to minimise cuts, keep it simple. It won't look as nice as most I've seen, but is it going to work?

Kind regards
John in Willetton, Perth, Australia
Build progress: Wood Fired Oven - Perth - Forno Bravo Design