Need a book? Engineering books recommendations...

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

RE: subgrade modulus

[Subject Prev][Subject Next][Thread Prev][Thread Next]
 
The formula noted below could be a little misleading.  "Settlement"
implies to me a long-term deformation, whereas the modulus relates to
short-term deformation.  I would say the formula is: 

applied bearing pressure/immediate soil deformation = modulus of
subgrade reaction

It also should be noted that the modulus is typically based on a
standard test with a plate of a particular size.  The modulus must be
adjusted based on actual bearing area. 

Bill Sherman
CH2M HILL / DEN 
720-286-2792 

-----Original Message-----
From: Bob Freeman [mailto:robert.freeman(--nospam--at)idsse.com] 
Sent: Tuesday, March 25, 2008 3:47 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: subgrade modulus

Abdolnasir:

The best way is to ask the Geotechnical engineer.

The formula is:

bearing pressure/settlement = coefficient of Subgrade Reaction (subgrade
modulus). k sub s = q/delta



Respectfully,
Bob Freeman, AIA, EIT
IDS Group, Inc.
(949) 387-8500





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