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Old 04-15-2011, 01:04 PM   #1
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concrete slab load

Hi I am thinking of changing my roofline. There is a room added onto my house sitting on a slab. The slab is 6 inches thick but does not have a footer.

It is 6 inches of concrete sitting on top of the soil. I live in nashville tn so the winters are cold but not extreem like the northeast.

Right now the roof is a 3:12 but I am looking to change it to an 8:12. So the slab will be bearing more load on the edge. This roof will be sitting atop a 2x4 wall.

I am wondering if the slab will start breaking on the edge or if I have nothing to worry about because after all... it is conctete and concrete is strong. Here are some pics of what I got right now

If you could picture the roof going from the front all the way to the back and do away with the compound pitch
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concrete slab load-roof-008.jpg   concrete slab load-roof-010.jpg   concrete slab load-roof-011.jpg  


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Old 04-15-2011, 11:53 PM   #2
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You really need to have footings and a good overall design before starting. Talk to an Architect or if too expensive a good designer in you area. From the description of work it sounds like an awful lot of work for a DIY project.



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Old 04-16-2011, 04:18 AM   #3
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IN n'ville or just outside ? 1st ck w/bldg permit/const office to see what you need,,, i'm in ga & some parts down here don't care while others ***** & moan if you lop off a tree limb ( guess where my bride, nagzilla, wants to live ) w/o a permit,,, you won't be adding a lot of static weight.
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