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Re: Earth friction on sonotubes

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The barn will be located on a private lot and was cleared last fall. I am interested in using the sonotube only as a form, I am not sure about the soils staying in place after the hole is augured. Another option is to use one of the flared footing forms that the sonotube is stuck on top of. I can then use the weight of the soil above to resist the uplift.

On 2/24/2014 8:46 AM, Chuck Utzman wrote:
No, it won't rot but why use it? The only time I use it is to prevent drilled piers from collapsing or to prevent mushrooming at the top.
Chuck Utzman,P.E.

On 2/24/2014 9:40 AM, nma wrote:
Doesn't the Sonotube usually rot out? I've seen something like this also but in metal sheds made out of bent tubing and corrugated sheet metal. The prospective client came to me because his engineer couldn't get this design passed by the local jurisdiction.

Neil Moore, PE, SE
neil moore and associates
consulting structural engineers
shingle springs, california
530 677-4308

On 2/24/2014 8:49 AM, Drew Morris wrote:
I am reviewing the design of a foundation for a small barn for horses, 30' x 36'. The designer is using sonotubes of various diameters with

Truncated 568 characters in the previous message to save energy.

Drew Morris, PE*| Project Engineer
BBFM Engineers, Inc. <>
510 L Street, Suite 200 | Anchorage, Alaska 99501
Ph: (907)274-2236 | Direct: (907)270-2240 | Web:

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