Specialty Materials Testing

Soil Classification Testing

Soil classification testing assigns a consistent engineering group name based on gradation, fines, plasticity, and the requested classification system.

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Service overview

What this service involves

Calicore combines the tests necessary for the classification objective rather than assuming every sample needs the same package. Work can include sieve analysis, wash fines, Atterberg limits, moisture content, visual-manual observations, and supporting classification.

Results are suited to small civil projects, site investigations, septic evaluation, construction materials, and specialty thermal or corrosion programs that need a documented soil description.

Step by step

How the process works

The exact scope is matched to the project, but a typical assignment follows these steps.

01
Define the classification system
We confirm the intended use, sample source, requested classification system, specification, and which supporting tests are needed.
02
Run the required component tests
The package may combine sieve analysis, wash fines, Atterberg limits, moisture content, and visual-manual observations.
03
Check the complete data
Gradation and plasticity are considered together so the group name and symbol follow the requested classification system.
04
Report the classification basis
The deliverable lists the supporting test data, group symbol and name, and the information used to assign them.

Review criteria

What a soil classification does—and does not—establish

Classification gives a consistent name to the submitted soil. Separate testing or analysis is needed for design properties and site-wide conclusions.

Sample location, depth, source, and representative condition
Gradation, fines, and plasticity information required by the selected system
The assigned group symbol and descriptive name
No implied determination of bearing capacity, settlement, expansion, permeability, corrosivity, or thermal and electrical properties

What you receive

Typical project deliverables

Gradation and fines data
Plasticity data when applicable
Moisture content
Engineering soil classification

Common project needs

When this service is useful

Civil soil reports
Residential site investigations
Construction materials
Thermal and corrosion sample characterization

Frequently asked