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RE: Converting ceiling joist to floor joist.

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Table 18-1-C of the 1997 UBC prescribes the minimum requirements for number of floors [in addition to a roof] that may be supported on minimum size footings – unusual conditions excepted.  An existing foundation for a house built on a slab on grade supports only a roof – a floor may be added without modifying the foundation.


Nels Roselund, SE

South San Gabriel, CA


From: hadiprawira djohan [mailto:hadiprawira(--nospam--at)]
Sent: Wednesday, September 21, 2005 8:10 PM
To: seaint(--nospam--at)
Subject: Re: Converting ceiling joist to floor joist.


In my case, I have the ex. footing dug and verified the soil. If the footing is inadeaquate, i would suggest helical piles system.

I wonder if anyone else has any other ideas!



Jnapd(--nospam--at) wrote:



How do you upgrade the footings on these structures ??


Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA

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