Lyman Henn maintains a soils laboratory to support its geotechnical design and construction materials testing services.  Our staff has earned field and laboratory certifications for soil, concrete, and asphalt testing.  The laboratory is fully equipped to support the needs of our geotechnical design and construction materials testing services required by our client's projects.

Lab tests performed: Grain Size Distribution Atterburg Limits Standard & Modified Proctor Soil Classification Moisture-Density Relationship (Proctor) Wash Sieve Analysis Gradation Analysis