1. A building is to be constructed. The effective stress after placing the build

Question

1. A building is to be constructed. The effective stress after placing the building ' 1 = 190 kN/m2. The preconsolidation stress of clay is o' c = 157 kN/m2. What is the state of soil after placing the building? (Overconsolidated or normally consolidated). 2. Owner decided to add 10 more floors to the building. Final effective stress after adding 10 more floors ' f = 250 kN/m2. The void ratio of the clay layer after placing the first part of the building is eo = 0.8 and void ratio after completion of adding 10 more floors is ei = 0.7. a. What is the state of the soil? b. What is the primary consolidation settlement? Given H = 10 m

Explanation / Answer

Prob.1

As the current effective stress(190 kN/m2) is greater than the preconsolidation pressure(157 kN/m2), so the soil is normally consolidated.

Prob.2

(a), The new preconsolidation pressure is 190 kN/m2

and it is less than effective stress of 250 kN/m2, so the soil is again normally consolidated.

(b) Settlement = H* eo/(1+eo) = 10 (0.8-0.7)/(1+0.8) = 5/9 = 0.555 m

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.