How much home foundation elevation fluctuation is acceptable in inches?
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Answers:
If you are talking about a recently built house, less than one inch. If you are talking about a foundation built of stone two hundred years ago, one inch of settlement is a dream come true. If you are asking how much settlement will the superstucture withstand without substantial damage like doors not working, windows breaking,drywall cracking, about an inch, maybe a little more.
i know that all grade elevations are tolerable within 1/10
i would except nothing over 1/4...remember as you go up so do the increases of the walls being off...
The factor that is causing it is expansive soils. You really shouldn't have even an inch of settlement. I think that a 1/4" is a big deal and I would monitor it on a regular basis. If it keeps on moving, then you can have the foundation underpinned with steel.
a foundation constructed in 2000 should have no variation in elevation at all a 1/4'' deviation would be acceptable although with modern construction methods
( I.E. laserlevels ) there is no excuse for any variance . the difference can be made up in the sill plate but is evidence of poor construction methods
The question is what kind of problems are you having? What chance do you think you would have of proving who's fault it was and that they would do something about it?
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