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)jps.net>
> To: seaint(--nospam--at)seaint.org
> Subject: Re: Retaining Wall Surcharge in Snow Country
> Date: Wednesday, June 09, 1999 11:50 PM
> 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