Skip to main content

Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator

Easily calculate and compute soil atterberg limits plasticity index (pi) & liquidity index (li) calculator with accurate equations, live formulas, and expert guidance.

Measured with Casagrande cup or fall cone.

3mm thread rolling limit.

Calculated Result
28 %

Plasticity Index (PI)

Plasticity Index (PI)

28 %

Plasticity Index Pi Pct

28

Liquidity Index Li

0.45

Consistency Index Ci

0.55

Clay Physical State Description

Plastic State (Normal firm clay behavior)

28 — %

Calculation Breakdown

  1. Applied FormulaClassifies cohesive soil consistency and sensitivity to remolding under shear loads using Albert Atterberg’s Liquid Limit, Plastic Limit, and Liquidity Index.\text{PI} = \text{LL} - \text{PL}, \quad \text{LI} = \frac{w - \text{PL}}{\text{PI}}

Atterberg Limits PI & LI Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.07.0142128Plasticity Index (PI)

What Is the Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator?

This tool computes soil atterberg limits plasticity index (pi) & liquidity index (li) calculator with high precision arithmetic.

How Does the Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator Work?

Classifies cohesive soil consistency and sensitivity to remolding under shear loads using Albert Atterberg’s Liquid Limit, Plastic Limit, and Liquidity Index.

Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

PI=LL−PL,LI=w−PLPI\text{PI} = \text{LL} - \text{PL}, \quad \text{LI} = \frac{w - \text{PL}}{\text{PI}}

Classifies cohesive soil consistency and sensitivity to remolding under shear loads using Albert Atterberg’s Liquid Limit, Plastic Limit, and Liquidity Index.

How to Use the Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Soil Atterberg Limits Plasticity Index (PI) & Liquidity Index (LI) Calculator Example

Input Values:

naturalWaterContentPct:36.5
liquidLimitLlPct:52
plasticLimitPlPct:24
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required %.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

\n

Explore more tools and calculators in Construction Calculators