AMRL-Certified Laboratory
Rock/concrete testing machine
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Navarro & Wright Consulting Engineers - Celebrating 15 Years

Certified Testing Laboratory

Our clients count on our multi-disciplined staff and modern equipment to provide expert testing and quality control. Whether preparing a site, evaluating an existing structure or facility, or requiring ongoing testing, Navarro & Wright has the equipment, facilities and expertise you need. We provide top-quality sampling, testing and analysis to help you meet project requirements and provide recommendations for types of testing to accurately suit the specific requirements of your projects.

Our Testing Laboratory is AMRL-certified [AASHTO (American Association of State Highway and TransportationOfficials) Materials Reference Laboratory] and is one of only four certified laboratories in the mid-state area. Navarro & Wright offers laboratory testing inaccordance with applicable ASTM and AASHTO standards. AAP

Lab services include:

Soil Tests

  • Visual Identification - ASTM D2488 and AASHTO T190  
  • Moisture Content -  ASTM D2216 and AASHTO T265
  • Particle Size Analysis - ASTM D422 and AASHTO T88
  • Percent Fines -  ASTM D1140
  • Liquid Limit -  ASTM D4318 and AASHTO T89 
  • Plastic Limit - ASTM D4318 and AASHTO T89
  • Specific Gravity- ASTM D422 and AASHTO T100  
  • USCS Classification of Soils - ASTM D2487

Compaction Tests

  • Standard Compaction -  ASTM D698 and AASHTO T99
  • Modified Compaction - ASTM E1557 and AASHTO T180

Strength Tests

  • California Bearing Ratio -  ASTM I883 and AASHTO T193

Chemical Tests

  • pH of Soils - ASTM 4972 and AASHTO T289
  • Minimum Resistivity - AASHTO T288
  • Sulfate Content -  CalDOT 417
  • Chloride Content - CalDOT 422
   
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