International Association of Certified Home Inspectors

Barry Adair · #1 9/13/06, 5:32 PM

At what point/height is guy-support required for a masonry chimney?

How high/wide can an unsupported masonry chimney be?

Are measurements taken from the ridge or eave side?

Any charts, codes, or other info would help.

This picture was thrown in as a joke.

Thanks in advance.

Jae Williams · #2 9/13/06, 5:35 PM

I don't see anything wrong.

It hasn't, like, fallen down or anything, has it?

nwagner · #3 9/13/06, 10:50 PM

If the roof ridge is more than 3 feet below it, that huge missing section could be considered an alternative for a rain cap...

lewens · #4 9/14/06, 5:58 PM

I don't think there is a requirement for support. I will check my code book. If I remember correctly if the chimney is that high it is supposed to come up through the roof wide and be corbelled down to a smaller size.
Larry

lewens · #5 9/14/06, 6:00 PM

I just checked and the code says bracing is required if the height is greater than 11' above the masonry part of the wall. code ref 9.21.4.5
Larry

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