What is the formula for calculating the plasticity index (PI) of a soil?
Understand the Problem
The question is asking for the correct formula to calculate the plasticity index of soil, which is a property related to its consistency and behavior when moisture is added. We need to identify which option correctly represents this calculation.
Answer
PI = LL − PL, where LL is the liquid limit and PL is the plastic limit.
The formula to calculate the Plasticity Index (PI) of soil is PI = LL − PL, where LL is the liquid limit and PL is the plastic limit.
Answer for screen readers
The formula to calculate the Plasticity Index (PI) of soil is PI = LL − PL, where LL is the liquid limit and PL is the plastic limit.
More Information
The plasticity index (PI) measures the range of moisture content at which soil remains plastic. It is essential in identifying the clay content and the soil's behavior under varying moisture conditions.
Tips
A common mistake is confusing the liquid limit (LL) with the plastic limit (PL) and reversing them in the formula. Ensure to subtract PL from LL.
Sources
- How do you calculate the plasticity index? - Quora - quora.com
- Atterberg limits - Wikipedia - en.wikipedia.org
- Plasticity Index - an overview | ScienceDirect Topics - sciencedirect.com
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