Question

A clay deposit suffers a total settlement of \(4\,\mathrm{cm}\) with one-way drainage. With two-way drainage, it suffers a total settlement of

• A. \(4\,\mathrm{cm}\)
• B. \(8\,\mathrm{cm}\)
• C. \(2\,\mathrm{cm}\)
• D. \(16\,\mathrm{cm}\)

Hint:

Drainage condition changes \[ \boxed{\text{Time of consolidation}} \] but does not change \[ \boxed{\text{Ultimate settlement}.} \]

Answer 1

The Correct Option is A

Step 1: Recall the effect of drainage condition. Changing from one-way drainage to two-way drainage affects only the rate of consolidation, not the total amount of settlement.

Step 2: Determine the total settlement. Therefore, the ultimate settlement remains unchanged. \[ \boxed{4\,\mathrm{cm}} \] Hence, \[ \boxed{(A)} \] is the correct answer.