Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion


The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known

[A]. liquid limit
[B]. plastic limit
[C]. shrinkage limit
[D]. permeability limit.

Answer: Option B


No answer description available for this question.

Md A Tiullah said: (Apr 22, 2013)  
About 15g of dried soil passing through IS 425 micron is taken for plastic limit determination and is mixed with a sufficient amount of water which would enable to soil mass become plastic enough to be easily shape into a ball. When a diameter of 3 mm is reached, the soil is remolded into a ball.

The process of making the threat and remolded continuous till the threat at a dia. Of 3 mm, just start crumbling.

Raghava said: (Jan 2, 2014)  
As soon as water added to soil sample and thorough mixing the powdered form of soil mixes with water and forms a tight mass and remains as a plastic form. The limit of changing of plastic mass is known as plastic limit. It's completely known through practical doing instead of reading through books.

Jagadeesh said: (Oct 11, 2014)  
It is the definition of plastic limit.

Mayank said: (Dec 13, 2016)  
It is shrinkage limit.

Ravi Kumar said: (Apr 7, 2017)  
Please give me the correct definition of Plastic limit.

Indhu said: (Apr 29, 2017)  
It is the limit at which soil stops behaving as a plastic material. It can be determined by plastic limit test or thread test.

Jagriti said: (Jun 16, 2017)  
At the beginning of crumbling it's plastic limit but after that it's shrinkage limit.

Pranjal said: (Aug 20, 2017)  
Crumbling means?

Shubham said: (Dec 6, 2017)  
Plastic or shrinkage limit.

Arya Ashokan said: (Dec 9, 2017)  
It's shrinkage limit.

Ankit said: (Feb 16, 2018)  
It's plastic limit.

Riya Mama said: (Apr 14, 2018)  
It's the plastic limit.

Kasthuri said: (Jul 20, 2018)  
It's plastic limit, the water content at which the soil begins to crumble when we form 3mm thread.

R.G said: (Jan 19, 2019)  
Shrinkage limit is correct.

Vijay K. said: (Jan 26, 2019)  
It's a plastic limit. I agree with the given answer.

Je Pankaj said: (Jan 27, 2019)  
I think shrinkage limit is correct.

Nancy said: (Apr 12, 2019)  
Plastic limit is the correct answer. I agree.

Kehomong Lim said: (May 5, 2019)  
Plastic limit is correct.

Prakash said: (Jun 12, 2019)  
The minimum Water content at which the soil can be rolled into a thread of 3 mm in diameter without crumbling.

Umair said: (Jul 17, 2019)  
You are right @Prakas.

So, it is a shrinkage limit.

Dhan Bahadur K.C. said: (Apr 19, 2020)  
I think, it is a shrinkage limit.

Mesbah said: (Apr 23, 2020)  
The plastic limit is correct because when we perform this test we take the moisture content where the sample is crumbled at 3mm.

Niva said: (Nov 3, 2020)  
Liquid limit - soil contain water with small shear strength.

Plastic limit -soil contain water in which the soil crumble into 3mm diameter.

Shrinkage limit-soil contains water 100%. It is fully saturated soil. From shrinkage limit the water content decrease.

Lokesg said: (May 11, 2021)  
Plastic limit [Wp].

The minimum water content at which the soil can be rolled into a thread of 3mm in diameter without crumbling. It's called THREAD TEST.

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