Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: soils pressure

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Joe,

I would not design a 12 foot retaining wall without a soils report. I do not
see how you can assume anything less than full soil pressure occurring at
some point in the life of the structure.  Anything less is opening yourself
up to all kinds of potential problems and liability.  Soil moves and shifts
with time and changes in moisture content, the cut will not stand
indefinitely.  Also, who is liable when the near vertical cut does not hold
and kills one of the construction workers?


Paul Feather PE, SE
pfeather(--nospam--at)SE-Solutions.net
www.SE-Solutions.net
----- Original Message ----- 
From: "Joe Grill" <jgrill(--nospam--at)swiaz.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, April 21, 2004 3:00 PM
Subject: soils pressure


> I have been asked to design a basement wall with a 12' retained height of
> soil.  There has been no geotechnical review of the residence, but the
> architect, who has done other work in the area, tells me the cut will
> probably stand almost vertical.  If this near vertical face is just a
couple
> of feet away from the wall and the backfill is a free draining fill, will
> the fill be able to achieve full lateral soil pressure against the wall.
> The architect/contractor/owner wants to use the floor diaphragm to
restrain
> the top of the wall.  If the full lateral soil pressure is achieved then
the
> diaphragm doesn't have the capacity to restrain the wall.  I have
suggested
> a geotech be brought in to look at the excavation and make recommendations
> at that point, but of course that hasn't been received very well.  If the
> full soil pressure is not activated will there be any pressure at all and
> how is it calculated.
>
> Any ideas?
>
> Joseph R. Grill
>
>
> ******* ****** ******* ******** ******* ******* ******* ***
> *   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
> *
> *   This email was sent to you via Structural Engineers
> *   Association of Southern California (SEAOSC) server. To
> *   subscribe (no fee) or UnSubscribe, please go to:
> *
> *   http://www.seaint.org/sealist1.asp
> *
> *   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
> *   send to the list is public domain and may be re-posted
> *   without your permission. Make sure you visit our web
> *   site at: http://www.seaint.org
> ******* ****** ****** ****** ******* ****** ****** ********
>


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ********