Calculate The Free Swell Index Of Soil Index

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1. Calculate the Free Swell Index of the Soil Index  

To determine the soil level, kindly refer to the volume of the soil sample and kerosene in the graduated cylinder. It is worth mentioning that kerosene is a non-polar liquid, which does not lead to soil swelling.

On the other hand, kindly take note of the free swell level as the soil level for the distilled water cylinder.


The free swell index of the soil shall be calculated as follows:

Free swell index = (


Vd is the volume of soil specimen read from the graduated cylinder containing distilled water.

Vk is the volume of soil specimen read from the kerosene graduated cylinder.


Read Also: Flow Net Construction By Graphical Method

Verified Article By Er. Madhu Krishna Poudel
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