Sieve Analysis Calculator

Maker Label Studio Professional B2B Tool — Soil Gradation & Shape Coefficients

Input Data

Please enter a valid total mass > 0.
Sieve Name Opening (mm) Retained (g)
Please ensure all mass inputs are zero or greater, and sizes are strictly decreasing.

Analysis Results

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D₁₀ (mm)
-
D₃₀ (mm)
-
D₆₀ (mm)
-
Uniformity Coef. (Cᵤ)
-
Curvature Coef. (C_c)
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Mass Balance Δ (%)
Shape check (USCS coarse): Gravel is well-graded if Cᵤ ≥ 4 & 1 ≤ C_c ≤ 3. Sand is well-graded if Cᵤ ≥ 6 & 1 ≤ C_c ≤ 3.
Sieve Size (mm) Retained (g) % Retained Cum. % Ret. % Passing
Pan - 0.00 0.00 - -
Total Recovered - 0.00 Initial Mass: 0.00

Enter data and click calculate to view gradation results.

System Self-Tests

Validates core interpolation and calculation logic against predefined mathematical expectations.

About the Sieve Analysis & Soil Gradation Calculator

The sieve analysis calculator helps geotechnical engineers and lab technicians swiftly classify structural soil gradation. Process raw weight-retained data to instantly generate the percent passing curve, extract key metrics like D10, D30, and D60, and determine if the soil is well-graded or poorly-graded under official USCS guidelines.

How it works

  1. Input the total sample weight and the mass retained on each standard sieve size.
  2. The tool calculates the cumulative mass retained and the percentage passing for each sieve.
  3. Review the calculated Coefficient of Uniformity and Coefficient of Curvature to classify the soil structure.

Frequently asked questions

What do D10, D30, and D60 represent in soil mechanics?

These values indicate the grain diameter at which 10%, 30%, and 60% of the soil sample is finer by weight. The D10 value is also known as the effective size.

How does the Coefficient of Uniformity determine grading?

The coefficient is the ratio of D60 to D10. A higher value indicates a wider range of particle sizes. For gravels to be well-graded, it must typically be greater than 4.

What defines a poorly-graded soil?

A poorly-graded soil has particles that are mostly the same size. This results in a steep gradation curve, lower shear strength, and higher permeability.

Why is the #200 sieve important?

The #200 sieve marks the boundary between coarse-grained soils and fine-grained soils. Materials passing this sieve heavily influence soil plasticity and frost susceptibility.

References