building. It is expected that the vertical stress at the top of the
clay will increase by 150 kPa and at the bottom by 90 kPa. You may
assume that the increased vertical stress is linearly distributed
in the clay layer. Groundwater level is at the top of the clay
layer. Given: Sand: Gs = 2.65, w = 23 %, S (degree of saturation)
= 90 % Clay: Gs = 2.7, w = 40 %, Cc = 0.3, OCR = 1
a) Calculate the primary consolidation settlement. You should
divide the clay into five equal layers, compute the settlement for
each layer, and then find the total settlement. 10 b) An oedometer
test on a sample of the clay revealed that 90% consolidation on a
20-mm-thick sample occurred in 40 minutes. The sample was drained
on the upper and lower boundaries. How long years will it take for
50% consolidation to occur in the field?
- Figure Q2 Shows The Soil Profile At A Site For A Proposed Office Building It Is Expected That The Vertical Stress At Th 1 (41.2 KiB) Viewed 32 times
- Figure Q2 Shows The Soil Profile At A Site For A Proposed Office Building It Is Expected That The Vertical Stress At Th 2 (99.63 KiB) Viewed 32 times
5 m Sand 10 m Clay Impervious rock Figure Q2 a) Calculate the primary consolidation settlement. You should divide the clay into five equal layers, compute the settlement for each layer, and then find the total settlement. b) An oedometer test on a sample of the clay revealed that 90% consolidation on a 20-mm-thick sample occurred in 40 minutes. The sample was drained on the upper and lower boundaries. How long years will it take for 50% consolidation to occur in the field?