Fireplace Hearth

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1

Originally Posted By: dmacy
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http://www.nachi.org/bbsystem/usrimages/5/56505_Mayfield_Heights_029.jpg ]


Thanks

Dave

2

Originally Posted By: dduffy
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Dave, was the fireplace added or was it ready to fall through the floor and someone added the support?


What is the support sitting on? Is there rebar in the concrete? or is the support just possibly ready to pop through the hearth?, if whatever the support is sitting on dosen't fail first? Hard to tell isn't it? I wouldn't even guess either.

An engineer could easily design a support for the fireplace, which in my opinion would surely be necessary.

3

Originally Posted By: kshepard
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That is a screw jack installed as temporary shoring. Additional weight from a concrete hearth above should be passed to the foundation by installing additional floor framing members such as joists.

4

Originally Posted By: dduffy
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kshepard wrote:
That is a screw jack installed as temporary shoring. Additional weight from a concrete hearth above should be passed to the foundation by installing additional floor framing members such as joists.


What if the fireplace and chimney are 30 feet tall 6 feet wide all masonry?

Kind of hard to guess, since the hearth which is part of a fireplace just needs floor joists for support without seeing the entire picture.

Floor joists might work if you have a metal insert with double wall metal flue vent pipes with a small hearth in front of it.