Laboratory Testing

Located in the heart of the San Francisco Bay, Signet’s 14,000 square foot laboratory is approved by AASHTO/AMRL, CCRL, Caltrans, DSA LEA, OSHPD, USACE and managed by a highly experienced Civil and Geotechnical Engineer. Our dedicated laboratory personnel have proven their abilities through the successful completion of certification programs sponsored by ACI, NICET, and Caltrans. Our laboratories are fully equipped to perform a full range of testing on construction and geotechnical materials:

Materials Testing Laboratory Analysis

  • Soils
  • Geotechnical
  • Aggregate
  • Asphaltic Materials
  • Concrete Materials
  • Masonry Components
  • Fireproofing Materials
  • Reinforcing Bars
  • Post Tension Strands

AASHTO Certified Laboratory

  • Quality Management System –
    R18, C1077, D3666, D3666, D3740, E329, E329, E329
  • Asphalt Mixture –
    D1560 (Stability), D1561, D2041, D2726, D3203, D5444, D6307, D6926, D6927
  • Soil –
    D421, D422, D558, D559, D854, D1140, D1557, D1883, D2166, D2216, D2487, D2488, D2844, D2974, D4318, D6938
  • Aggregate –
    C40, C88, C117, C127, C128, C131, C136, C142, C702
  • Concrete –
    C31, C39, C78, C138, C143, C172, C173, C192, C231, C511, C617, C1064, C1231
  • Iron and Steel –
    A615-A370 (Carbon-Steel Bars, Deformed and Plain: Tensile Strength+++)
    A615-E290 (Carbon-Steel Bars, Deformed and Plain: Bend Test)

Geotechnical Testing Laboratory Analysis

  • Soils Classifications
  • Permeability
  • Triaxial Compression
  • Plasticity Index (Atterberg Limits)
  • Durability Index
  • Direct Shear Testing
  • Consolidation Properties
  • R-Value Determinations
  • Hydrometer
  • Organic Content

Caltrans Certified Laboratory

  • CT-105/106, CT-207/208, CT-227/229
  • CT-309/366, CT-539/540, CT-125 AC/Agg
  • CT-209/211, CT-231/375, CT-367/370
  • CT-543, CT-201/202, CT-2121213
  • CT-234/235, CT-371/382, CT-523/524
  • CT-203/204, CT-214/216, CT-301/303
  • CT-504/518,T-205/206, CT-217/226
  • CT-304/308, CT-521/533

On-Site Laboratory Testing Facility

  • Full Service Laboratory for Remote/ Large Projects (Soils, Flex Beam, Compression tests)