Need a book? Engineering books recommendations...

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

RE: Seismic Earth Pressures on Cantilever Retaining Walls

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Can't forget about if you are designing to the 2000 IBC and are in seismic
design categories D, E or F.  IBC 1802.2.7 says,"...The investigation shall
include: 1. A determination of lateral pressures on basement and retaining
walls due to earthquake motions..."

Scott M Haan P.E.
Plan Review Engineer
Building Safety Division 
Development Services Department
Municipality of Anchorage
http://www.muni.org/building
phone:907-343-8183  
fax:907-249-7399
mailto:haansm(--nospam--at)ci.anchorage.ak.us



-----Original Message-----
From: J. K. [mailto:structure_r_us(--nospam--at)yahoo.com]
Sent: Monday, October 29, 2001 2:41 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Seismic Earth Pressures on Cantilever Retaining Walls


I ask this question to geotechnical engineers all the
time. Their response seems: "forget about it". Any
geotechnical engineer here?

--- Nick Arenson <narenson(--nospam--at)olymandalay.com> wrote:
> What is the state of the practice regarding seismic
> pressures on cantilever
> retaining walls?  Mononobe-Okobe (1926) developed a
> method and it has been
> extended through the years.
> 
> We've all realized that peak ground accelerations
> can be significant in near
> fault areas.  The formulation of M-O sort of falls
> apart at high
> accelerations because (it appears to me at least)
> the underlying assumptions
> can not deal with high accelerations (there is
> actually a combination of
> effects such as slope of backfill, friction angle,
> etc.,  that make the
> formulation break down).
> 
> The Seed Whitman formulation (1970) seems to still
> apply (mainly because it
> is a vast simplification and the nasty formulation
> details go away).
> 
> What are people using these days?
> 
> Nick Arenson
> 
> 
> 
> 
> ******* ****** ******* ******** ******* *******
> ******* ***
> *   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 
> ******* ****** ****** ****** ******* ****** ******
> ******** 


__________________________________________________
Do You Yahoo!?
Make a great connection at Yahoo! Personals.
http://personals.yahoo.com

******* ****** ******* ******** ******* ******* ******* ***
*   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 
******* ****** ****** ****** ******* ****** ****** ********