Soils
STATE Testing offers a full range of soils testing services, from basic classification to moisture and density control. Our soils laboratory is approved by the Illinois Department of Transportation (IDOT) to perform acceptance tests in accordance with the IDOT Project Procedures Guide, ensuring reliable, project-ready results.
In addition to lab services, our field technicians are equipped to perform on-site acceptance testing, providing immediate data and insights to keep projects moving efficiently. Whether it’s routine compaction verification, specialty soil evaluation, or troubleshooting in the field, we bring both experience and flexibility to every project.​
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Soils Field Services​
Moisture Density via Nuclear Gauge
Static and Dynamic Cone Penetrometer
One Point Proctor
Sub-grade Inspection
Embankment Inspection
Soils Lab Services​
Dry Preparation of Disturbed Soil and Soil Aggregate Samples for Test
(AASHTO R58 / ASTM D421)
Particle Size Analysis of Soils by Hydrometer
(AASHTO T 88 / ASTM D422)
Determining the Liquid Limit of Soils (Atterberg Limits)
(AASHTO T 89 / ASTM D4318)
Plastic Limit of Soils (Atterberg Limits)
(AASHTO T 90 / ASTM D4318)
Standard Proctor: Moisture-Density Relations of Soils Using a 5.5 lb [2.5 kg] Rammer and a 12 in. [305 mm] Drop
(AASHTO T 99 / ASTM D698)
Modified Proctor: Moisture-Density Relations of Soils Using a 10 lb [4.54 kg] Rammer and an 18 in. [457 mm] Drop
(AASHTO T 180 / ASTM D1557)
Specific Gravity of Soils
(AASHTO T 100)
Laboratory Determination of Moisture Content of Soils
(AASHTO T 265 / ASTM D2216)
Determination of Organic Content in Soils by Loss on Ignition
(AASHTO T 267 / ASTM D2974)
In-Place Density and Moisture Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)
(AASHTO T 310 / ASTM D6938)
Amount of Material in Soils Finer than the No. 200 (75-μm) Sieve
(AASHTO T 11 / ASTM D1140)
Classification of Soils for Engineering Purposes (Unified Soil Classification System)
(ASTM D2487)
Description and Identification of Soils (Visual-Manual Procedure)
(ASTM D2488)
Unconfined Compressive Strength via IDOT "Rimac"
See AASHTO Resource website for all accredited test methods.