Calculating settlement

[soileater]

Can anyone tell me how to calculate predicted settlement from oedometer tests (e log p curve). I know how to calculate the collapse with the formula((eo-e1)/1+eo)*100. But dont know how to arrive at total settlement.

 

[fattdad]

You need to review a settlement manual or geotechnical engineering textbook on this subject. Try this:

http://www.usace.army.mil/publications/eng-manuals/em1110-1-1904/toc.htm

Good luck - this should have been covered in your geotechnical training.

f-d

¡papá gordo ain’t no madre flaca!

 

[geohec]

From a consolidation test find, the e log p curve, you need to find the compression index value (Cc). Should be something like 0.20. Then, use the classical formula, found in any geotech book:

S = [Cc/(1+eo)*log ((po+Dp)/po)]*H(thickness of soil)

Look for Braja Das Geotechnical Engineering book.

good luck

 

[BigH]

Oh - and don't forget the Bjerrum correction factor . . . and be happy if you are within 30% of the "real value".