Settlement calculation on undrained clay
Settlement calculation on undrained clay
(OP)
According to a geotechnical investigation, we´ve encountered a 7 meters lean clay stratum with moisture contents between 9% and 14%. Which method should I use to estimate the settlement of a 4 storey building? I believe using parameters obtained from consolidation tests might not reproduce the conditions encountered in the field. There is no groundwater in the upper 15 meters and the lean clay rests on a sandy clay stratum.





RE: Settlement calculation on undrained clay
RE: Settlement calculation on undrained clay
RE: Settlement calculation on undrained clay
RE: Settlement calculation on undrained clay
In my own experience, results of oedometer lab tests can be overconservative (in unsaturated silty-sandy clays). I ruminated much on the issue, without finding a final explanation. Maybe sample disturbance, maybe lab saturation without field saturation, maybe the lab curve is very different from the field curve.
Sometimes it's good to have a load-unload cycle but it doesn't Always improve things much.
Once when I really did not want an overconservative result I used the Marchetti flat dilatometer.
www.mccoy.it
RE: Settlement calculation on undrained clay