John Kogel Posted August 15, 2012 Report Share Posted August 15, 2012 These 12 yr old chimneys are for wood burning fireplaces now converted to gas logs. The veneer is real stone, kind of thick and heavy. Should an engineer take a look? There is no indication of trouble, maybe just in my mind. Would there normally be steel reinforcement between the flue liner and the veneer and if so, how would that be accomplished? Click to Enlarge 77.03 KB Click to Enlarge 58.94 KB Click to Enlarge 68.68 KB Click to Enlarge 45.82 KB Quote Link to comment Share on other sites More sharing options...
Marc Posted August 15, 2012 Report Share Posted August 15, 2012 I'm a little confused. You mention liner but also stone veneer which suggest it's wood framed. You don't use a liner on a wood framed chimney. Marc Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted August 15, 2012 Report Share Posted August 15, 2012 I'd be concerned about what it is sitting on and how it is anchored in this case to the liner just like with with brick veneer. You might be able to see what its sitting on. It should be substantial. Is it? You probably can't see how it is attached to the liner. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted August 15, 2012 Author Report Share Posted August 15, 2012 Correction - the fireplaces are metal heatalators and metal chimneys are just visible at the top. Everything is closed in behind facades. The foundation below is poured concrete with concrete ceilings in the crawlspace areas. Above the roof, all behind flashings, not visible. All the roof flashings are copper, BTW. Expense was not a factor in this place. I'm saying stone veneer because the stone appears to be added from above the roofline up, supported by steel angle iron lintels. They are not conventional stone chimneys, obviously. Quote Link to comment Share on other sites More sharing options...
LeePlace Posted August 16, 2012 Report Share Posted August 16, 2012 John, What is the angle Iron attached to? How Are they attached? The weight of the natural stone would cause extreme bending forces at the roof penetration during an earthquake. You should recommend an engineer review the chimneys or at least review the stamped plans. The new owner would not want the chimney to be like a three scope ice cream cone when you move the gear shift from 1st to 2nd, the cone is in your hand ......ice cream is on the seat. Quote Link to comment Share on other sites More sharing options...
kurt Posted August 16, 2012 Report Share Posted August 16, 2012 I've looked at the pictures several times, and I still can't figure out what they're doing. I'd have to see a paper trail on that thing; it's very strange. Who knows? Maybe it's the latest fashion. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted August 16, 2012 Author Report Share Posted August 16, 2012 There's copper flashing all around the base. Not visible. They don't pass thru the attic, either. The stone seems to be well attached with no sign of cracked mortar. In fact, all the rockwork is exceptional on this property. There are stone terraces everywhere. I'm starting to think the core of the chimneys may be reinforced concrete or maybe welded steel. We'll have to go back to the blueprints I agree. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted August 16, 2012 Author Report Share Posted August 16, 2012 John, What is the angle Iron attached to? How Are they attached? The weight of the natural stone would cause extreme bending forces at the roof penetration during an earthquake. You should recommend an engineer review the chimneys or at least review the stamped plans. The new owner would not want the chimney to be like a three scoop ice cream cone when you move the gear shift from 1st to 2nd, the cone is in your hand ......ice cream is on the seat. Driving with an ice cream cone in your hand, tsk, tsk. You need to switch to an automatic. [] We are no longer allowed to drive while operating a handheld device up here, but I don't think an ice cream cone could be called a device. It's still ok. Quote Link to comment Share on other sites More sharing options...
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