# Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 1 (Q.No. 6)

6.

A soil has a liquid limit of 45% and lies above the

*A*-line when plotted on a plasticity chart. The group, symbol of the soil as per Soil Classification isDiscussion:

7 comments Page 1 of 1.
Radhey Shyam Bairagi said:
2 years ago

Taking U line equation = 0.9(WL-8).

= 0.9(45-8) = 33.3.

Hence above A-line we know its clay so by 33.3 it is between 30 to 50 liquid limit range.

Hence, it's Clay intermediate.

= 0.9(45-8) = 33.3.

Hence above A-line we know its clay so by 33.3 it is between 30 to 50 liquid limit range.

Hence, it's Clay intermediate.

Vinoth said:
5 years ago

In a liquid limit test by Casagrande cup method, 15 blows were required at 60% water content, and 25 blows were required at 48% water content. Liquid limit of the soil is?

Please give the answer of it.

Please give the answer of it.

Shubham thakur said:
5 years ago

Taking U line equation = 0.9(WL-8).

=0.9(45-8)=33.3.

Hence above A line we know its clay so by 33.3 it is between 30 to 50 liquid limit range. Hence

it's Clay intermediate.

=0.9(45-8)=33.3.

Hence above A line we know its clay so by 33.3 it is between 30 to 50 liquid limit range. Hence

it's Clay intermediate.

Subham bhowmik said:
6 years ago

The liquid limit(wl) = 45%.

IP=0.73(wl-20)=0.73(45-20)=18.25 that means IP of soil> IP of A line=CI.

IP=0.73(wl-20)=0.73(45-20)=18.25 that means IP of soil> IP of A line=CI.

Mostafa said:
6 years ago

Ch please check the plasticity chart.

ANBARASAN said:
6 years ago

In plasticity chart, above a line for 45 % liquid limit is" CI". And below a line MI or OI.

ABHISHEK RAJORIYA said:
9 years ago

In the graph above A-line CL CH & CI exist. But in the question liquid limit is 45% given which is lies in CI region and its liquid limit range is 35%-50%.

So the answer is (B).

So the answer is (B).

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