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RE: Laterally Loaded Pier Foundations

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Any way you cut it, it is an iterative solution.

My favorite quick & dirty is Czerniak, "Resistance to Overturning of Single,
Short Piles", Journal of the Structural Division ASCE, March 1957.  It is
quick and easy, and contains nomographs (You can get an answer with a slide

There is also the UBC Sect. 1806.8.

And there is the L Pile computer program.

Harold Sprague

> -----Original Message-----
> From:	John MacLean [SMTP:john_maclean(--nospam--at)]
> Sent:	Wednesday, August 16, 2000 5:24 PM
> To:	seaint(--nospam--at)
> Subject:	Laterally Loaded Pier Foundations
> I think a similar question to this may have been asked on the list
> recently
> but I haven't been able to track it down in the archives so my apologies
> if
> this is a repetition.
> Does anyone know of a simple method to design a small drilled pier
> foundation subject to lateral load and/or moment. In my particular case it
> is meant to support a 30 foot long swinging gate. But I've seen the same
> sort of thing used for small signs, traffic lights etc. I'm looking at
> perhaps a 2'-0" dia. x 8'-0" deep concrete pier with a heavy 8" pipe
> column
> coming up through the middle to provide the support for the gate. I figure
> there would be a moment at the steel pipe column of about 40 k-ft
> (unfactored). I don't have much of a clue as to what sort of soil pressure
> this will generate or what sort of pressure would be allowable. At least
> nothing more than a WAG.
> Thanks for your help,
> John MacLean

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