Geotechnical Engineering Services

• Geotechnical Investigations
• Geotechnical Feasibility Studies
• Geotechnical Pre-Purchase
• Foundation Investigations
• Drainage Studies
• Slope Stability Analysis
• Retaining Wall Investigation
• Liquefacton Analysis
• Soil and Structure Interaction Analysis
• Geotechnical Forensic Studies

Engineering Geology

• Engineering Geologic Feasibility Studies
• Engineering Geologic Pre-Purchase
• Engineering Geologic Investigations ASTM D 6151, D 1452, D 420, D 1586
• Earthquake Fault Studies
• Geologic Hazard Studies
• Landslides Investigations and Studies
• Seismic Refraction/Reflection
• Geophysical Surveys
• Rock Rippability Studies
• Hydraulic Studies
• Engineering Geologic Forensic Studies
• Private On-Site Sewage Disposal System Testing ASTM D 5921, D 5925

City of Los Angeles Deputy Grading Inspection Services

Field Inspection Services

• Identification and Index Properties Test
  • Relative Compaction Testing of Fill ASTM D 1556
  • Pile Installation Inspections
  • Tie-Back/Tie-Down/Pull-Up Pile Testing and Inspection
  • Foundation Excavation Inspection
  • Subdrain Installation Inspection
  • Swimming Pool Excavation Inspection

  Laboratory Testing

  • Identification and Index Properties Test
    • Visual Classification ASTM D 2487, D 2488
    • Moisture Content ASTM D 2216, D 2974, D 4643
    • Density Testing ASTM D 2216
    • Atterberg Limits ASTM D 4318, AASHTO T89 & T90
    • Sieve Analysis ASTM D 422
    • Specific Gravity ASTM D 854
    • Porosity
    • Permeability AASHTO T215
    • Sand Equivalent ASTM D 2419
  • Chemical/Corrosion/Organic Testing
    • Soil pH ASTM D 4972
    • Electrical Resistivity ASTM D 2487 57
    • Sulfate Content ASTM C 1580
    • Chloride Content ASTM D 1218 AASHTO T291
    • Organic Matter Content AASHTO T267
  • Compaction, SBR, and R-Value
    • Standard Proctor Compaction ASTM D 698
    • Modified Proctor Compaction ASTM D 1557
    • California Bearing Ratio (CBR): ASTM C 1883
    • R-Value ASTM D 2844
  • Shear Strengths
    • Pocket Penetrometer
    • Torvane Shear
    • Direct Shear ASTM D 2166, D 3080, D 6467
    • Triaxial Shear ASTM D 2850
  • Consolidation and Swell Tests
    • Consolidation Test ASTM D 2435
    • Expansion Index ASTM D 4829
    • Capillary-Moisture Relationship ASTM D 2325 & D 35152

  Asphalt Concrete Testing

  • Density of Field and Laboratory Samples
  • Bulk Specific Gravity of Compacted Specimens and Core Samples: ASTM D 2726,
    D 1188 CTM 308
  • Specific Gravity: ASTM D 2041, AASHTO T84 & T85
  • Compaction of Laboratory Samples
  • Marshall Method: ASTM D 1559
  • California Kneading Compaction ASTM D 1561, CTM 304
  • Asphalt Coring

  Aggregate Base

  • Sieve Analysis ASTM C 117. C 136, CTM 202
  • Soundness, Sodium Sulfate ASTM C 88
  • Specific Gravity ASTM C 127 & 128, CTM 206, 207 & 208
  • Resistance “R” Value of Aggregate: ASTM D 2844, CTM 301
  • Crush Particle Count