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Old 01-27-2010, 04:01 PM
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Default Re: How much weight can an entry arch support?

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Here's the rub: My vent footprint is 12" deep, about 14" wide. Place a 10" pipe on that and I have 1" to spare front and back. I don't how to brick around that, especially with a gap.
You could offset it to the rear, and the weight of the brick chimney surround would be shared between the entry arch and the dome. The insulation issue could be solved by making the less visible parts of the chimney surround out of something insulating, like vermiculite concrete, or Hebel (AAC) blocks if you could get them in this country.
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  #12  
Old 01-27-2010, 04:53 PM
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Default Re: How much weight can an entry arch support?

I plan on using clay flue liner, 8x8, and also a brick chimney. The way I have it planned is for the entry arch to support just the flue liner, and I will use angle iron to support the chimney brickwork on piers to the sides.

As a rule, any brick not exposed to direct flame do not need to be fire brick.
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Old 01-27-2010, 05:10 PM
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Default Re: How much weight can an entry arch support?

Just watched a show on TV and they loaded an arch like yours and I think it held something like 1400 lb. The lower arch held 2700 lb.
Now it was just an arch, not two with a vent between.

Tom
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Old 01-27-2010, 08:12 PM
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Default Re: How much weight can an entry arch support?

Sweeeeeeeeeeeet!
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Old 02-07-2010, 05:12 PM
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Default Re: How much weight can an entry arch support?

look at it this way..... the downwood pressure is equaled by the sidewood force so >^< if your wall are supported properly it is almost impossible for your arch to fall (if your masonry is correctly installed) so the only way it realy can fall is if the side walls are pushed out.

just look at the roman's when they built archs they are still standing after a few hundred years
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Old 03-31-2013, 09:39 PM
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Default Re: How much weight can an entry arch support?

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Originally Posted by Tscarborough View Post
I plan on using clay flue liner, 8x8, and also a brick chimney. The way I have it planned is for the entry arch to support just the flue liner, and I will use angle iron to support the chimney brickwork on piers to the sides.

As a rule, any brick not exposed to direct flame do not need to be fire brick.
Did you finish this and do you have pics?
Did you insulate between the flue liner and brick chimney or just left an air gap?
How does it perform?
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Old 04-02-2013, 07:56 AM
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Default Re: How much weight can an entry arch support?

I changed it a little bit and did not use steel. I used perlcrete to insulate and form a brick ledge and built the chimney on that. It performs very well.



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Old 04-02-2013, 08:29 AM
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Default Re: How much weight can an entry arch support?

Is there just an air gap between the brick chimney and the inner clay flue liner? Or did you insulate that as well?
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  #19  
Old 04-02-2013, 08:36 AM
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Default Re: How much weight can an entry arch support?

It is filled with loose perlite.
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