Going To Build This...

CJKarl

...but not sure how to do it yet.

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CJKarl

Here's where I am. Doing the corners and starting the piers tomorrow.

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CJKarl

I'm thinking I have to build some kind of masonite or flexable material falsework. It has to built AROUND the piers and then removed later. I've been tweeking my brain all the way up with this chimney. Now it's time to pay the piper.
Any thoughts?

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master mason

looks great CJ. I hate those 3 holed brick,the mud has to be stiffer than I like it cuz it falls in the big holes.I like my brick mud like velvet.

lukachuki

sorry no solutions...but keep us posted with pictures. Looks like a real challenge. I like the detailing but I can see how it would be making you sweat a little.

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Less with the jaw more with the paw!

CJKarl

You ain't telling me nuttin. Those things EAT mud...but once they set, they don't come apart.

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wesmartyn

That looks sweet.
But where is the air space?

6stringmason

Looks great!

I would say for your arches on top where they hang over a bit, maybe make up some sort of jig that rests on the part youre on now that sits along the columns you have to build and holds the arched brick in place.

Then maybe to keep the jigs in place and held tight to the columns wrap a small ratchet strap around em and cinch em tight. Im thinkin a few 2x's and some 1/2" osb or something.

Just an idea.

If you dont understand what I just wrote (because I wouldnt) I can try and draw a picture and post it for ya?

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master mason

CJ, you need to put a piece of plywood over top the flues and build your form up off of that.I would also dowel a #4 rebar in each pier and lay the brick over them and fill the holes w/mud. This will sturdy up the piers

Tscarborough

I see issues.

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master mason

Do you have solid brick for the ends of the barrel arch?

CJKarl

I do have solid brick for the ends. On those I'm going to drill about 3/4 into the brick and epoxy threaded stainless rod about 1 ft long into them. Then when I lay the next 3 or 4 courses I'll slid the rod through those wopper brick cores and either epoxy or grout them. I also talked the owner into letting me stucco the underside of the arched cap with black mortar so I don't have to worry about any joint detail on the underside.

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CJKarl

Airspace? Around the flue. Never do, never had any problems.

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CJKarl

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Tscarborough

The issue I see is that you have an un-buttressed arch. Unless you assemble it as a tensioned unit, it is going to want to flatten out and push the sides with it.

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bobcaygeonjon

I know it would cause a whole set of other problems but how about forming the arch on the ground use epoxy resin and re-bar through the holes and then hoisting up in one piece. Not that I have done anything like that before but I agree with tscarborough.
Btw, your scaffold scares me

CJKarl

Really? Never built an A-frame?

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CJKarl

I'm going to run stainless threaded rod through the cores and do a "shade tree" post tension system.

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CJKarl

THis is all we got done today, between the owner and the artichoke changing poop. But we're ready to try the arch tommorrow.

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CJKarl

By the way...the dome came in today for the light shaft.

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