What is the preconsolidation stress on September 1? Express your answer in kPa, but write only the numeric answer in the textbox

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter8: Stresses In A Soil Mass
Section: Chapter Questions
Problem 8.8P
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geotechnical engineering question

Use 10 kN/m³ for the unit weight of water.
Question 4
A project with multiple construction stages will take place at your site (below which lies a saturated
clay layer).
On August 1, the effective stress at point A (in the middle of the clay layer) is 50 kPa, and the
overconsolidation ratio is 3.
On September 1, the effective stress at point A is 140 kPa.
On October 1, the effective stress at point A is 190 kPa.
What is the preconsolidation stress on September 1? Express your answer in kPa, but write only the
numeric answer in the textbox
Transcribed Image Text:Use 10 kN/m³ for the unit weight of water. Question 4 A project with multiple construction stages will take place at your site (below which lies a saturated clay layer). On August 1, the effective stress at point A (in the middle of the clay layer) is 50 kPa, and the overconsolidation ratio is 3. On September 1, the effective stress at point A is 140 kPa. On October 1, the effective stress at point A is 190 kPa. What is the preconsolidation stress on September 1? Express your answer in kPa, but write only the numeric answer in the textbox
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