Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

mohr stress circles for slope stability design 1

Status
Not open for further replies.
meravp

meravp

Geotechnical
Joined
Oct 6, 2021
Messages
2
Location
IL
Hi there!

I got a report from the lab for CU test.

there are 2 mohr graphs:
1.mohr stress circles based on effective stress at max deviator stress
2.mohr stress circkes based on effective stress at max stress ratio.


what does each graph represent for slope stability design?
which phi and c should I take for design-from both graphs, for just one of them??
 
Sort by date Sort by votes
I have never seen mohr circles plotted using max stress ratio. I have only ever assess phi and c' based no max deviator stress at failure.

Can you show both graphs.
 
Upvote 0 Downvote
Generating mohr coulomb plots is based on inspecting the stress strain curves then determining peak and residual strain increment, and commenting on how they vary.
 
Upvote 0 Downvote
The FHWA Geotechnical Site Characterization manual comments on this. I think Holtz and Kovacs does as well.
 
Upvote 0 Downvote
I have only ever seen MC plots for peak deviator stress at failure. What is the definition of max stress ratio?
 
Upvote 0 Downvote
The two plots you posted have the same interpretation, so there is no difference in this case you posted. That said, I would use the max stress data if I were using mohr circles.

The better option is to the p-q plots to interpret the data.

Mike Lambert
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

JahmaiS_
  • Locked
  • Question Question
Slope Stability
Replies
5
Views
1K
GeoEnvGuy
GeoEnvGuy
JahmaiS_
  • Locked
  • Question Question
Slope Stability and retaining wall design
Replies
0
Views
1K
JahmaiS_
JahmaiS_
S
  • Locked
  • Question Question
Need assistance with a RS2 Slope design - Blasted Pyroxenite being dumped down a slope
Replies
0
Views
909
Shawn van Wyk
S
Geotech_Pavement
  • Locked
  • Question Question
Landfill Liner Slope Stability (Static & Seismic)
Replies
2
Views
1K
GeoEnvGuy
GeoEnvGuy
Mdntramble17
  • Locked
  • Question Question
Reinforced slope erosion
Replies
4
Views
1K
Mdntramble17
Mdntramble17

Part and Inventory Search

Sponsor

Back
Top