ACI 318 - foundation deflection criteria?
ACI 318 - foundation deflection criteria?
(OP)
I don't have my copy handy, does anyone know if there are criteria or limits to deflection of continuous wall foundations? I don't have a specific problem in mind, but the situation is a typical residential foundation. There are no such limits in our code (Florida Building Code), and I would not expect any in ACI.
To be clear, I am talking about soil-supported continuous wall foundations, not grade beams on piles or anything like that. And I know that even the term "deflection" doesn't really apply to differential foundation settlement to a soil supported foundation system, but this is the term I "have been handed" to comment on. I only need to know if this is mentioned in ACI 318 or not. Thanks in advance!
To be clear, I am talking about soil-supported continuous wall foundations, not grade beams on piles or anything like that. And I know that even the term "deflection" doesn't really apply to differential foundation settlement to a soil supported foundation system, but this is the term I "have been handed" to comment on. I only need to know if this is mentioned in ACI 318 or not. Thanks in advance!






RE: ACI 318 - foundation deflection criteria?
RE: ACI 318 - foundation deflection criteria?
RE: ACI 318 - foundation deflection criteria?
When footings move, that creates problems in the structure above. These are the measurable and codifiable criteria which mean something.
RE: ACI 318 - foundation deflection criteria?
Thanks guys!
RE: ACI 318 - foundation deflection criteria?
I usually check the stem wall or strip footing for a 10 foot span for the load it sees to get by this periodic problem.
Mike McCann
MMC Engineering
RE: ACI 318 - foundation deflection criteria?
RE: ACI 318 - foundation deflection criteria?
Good luck!
RE: ACI 318 - foundation deflection criteria?
RE: ACI 318 - foundation deflection criteria?
BigH- That's good stuff, I had never given distortion of shallow foundations this much thought... But to be clear, this was not cropped out of ACI somewhere, this is from a textbook?
Thanks everyone.
RE: ACI 318 - foundation deflection criteria?