Question

For clay soil the value of n can be taken as _____________ in the absence of test data.

(a) 0. 4 to 0.5

(b) 0.20 to 0.25

(c) 0.003 to 0.05

(d) 0.08 to 0.10

I had been asked this question during an online exam.

I need to ask this question from Bearing Capacity topic in section Bearing Capacity of Geotechnical Engineering II

Answer 1

Correct answer is (c) 0.003 to 0.05

The explanation is: The value of index n can be determined by carrying out two or more plate load tests on different size plate. In absence of test data, the following values of n can be adopted:

Dense sand : 0.4 to 0.5

Loose sand : 0.20 to 0.25

Clay : 0.003 to 0.05

Sand clay : 0.08 to 0.10.