Lab Accredidation Program





Minimum Capabilities to be a WACEL Accredited Laboratory

A testing laboratory that seeks accreditation for concrete testing shall be capable of performing the required ASTM test methods or practices listed below:

  1. Sampling, Method C172
  2. Slump, Test Method C143
  3. Unit Weight, Yield, and Air Content C138
  4. Air Content, C173 (volumetric method) and C231 (pressure method)
  5. Making and Curing Test Specimens, C31
  6. Compressive Strength, C39
  7. Capping Cylindrical Concrete Specimens C617 of C1231
  8. Temperature, C1064
A testing laboratory that seeks accreditation for soils testing shall be capable of performing the required ASTM test methods or practices listed below.
  1. Proctors D698 (standard), D1557 (modified), VTM-1, and the equivalent test methodology required by Maryland
  2. Specific Gravity of Coarse Aggregate (oversized particles) C127
  3. Specific Gravity of Soils, D854
  4. Hydrometer and Sieve Analysis, D422
  5. Moisture Content, D2216
  6. Field Density Testing D1556 (sand cone), or D2922 (nuclear) or both
  7. Atterberg Limits D4318
  8. California Bearing Ratio (CBR)* -- ASTM D-1883/VTM-8
*CBR is required only of a principal laboratory in the WACEL service territory. The region known as the WACEL service territory is defined annually by the Board of Directors.