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Re: Retaining Wall Surcharge in Snow Country

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How about some bridging action?  Some heat will escape from an "unheated"
basement so long as it's warmer than outside.  A little heat, melting, and
refreezing, and Bingo!, an ice bridge.

And lest you disqualify me because of my geographical location, I lived and
worked in Michigan for seven years.

Fountain E. Conner, P.E.
Gulf Breeze, Fl. 32561

> From: Randy Vogelgesang <rvogel(--nospam--at)>
> To: seaint(--nospam--at)
> Subject: Re: Retaining Wall Surcharge in Snow Country
> Date: Wednesday, June 09, 1999 11:50 PM
> Tom,
> I posted this exact same topic about a year ago and did not receive much
> a response.  One thoughtful engineer suggested that frozen soil has no
> active pressure and as a result negates any surcharge.  Good point
> our frost line is only 18+ACI-.  I personally haven't seen any negative
> of walls that where this surcharge is not considered (even really old
> walls).  One possibility is that full active pressure takes along time to
> fully develop and that the FULL ground snow is very seldom on the ground
> ever).  Currently the EL Dorado County Building Dept. is looking at this
> subject.  I understand that they haven't have had very much input.  My
> personal opinion is that the retaining walls seem unaffected by ground
> load and that money required to beef up retaining walls might be better
> spent on other parts of the structure.  I will be looking forward to
> on this subject and will forward any relevant info to the EDC building
> Randy Vogelgesang S.E.
> South Lake Tahoe