PJC & Associates, Inc.

PJC provides full-scope geotechnical services covering subsurface exploration, laboratory testing, engineering analysis, and reporting. Projects begin with a review of background reports and site investigation, followed by soil and bedrock sampling, laboratory testing, and engineering analysis addressing slope stability, liquefaction, bearing capacity, friction, and settlement. Reports provide foundation design parameters, seismic design criteria, slab-on-grade design, retaining wall parameters, pavement thickness, and drainage recommendations.

• Design Level Geotechnical Investigations

  Subsurface investigations for single family residences, roads, bridges, tunnels, wineries, utilities, schools, hospitals, recreational facilities, reservoirs, dams, commercial developments, and multi-family and high-rise structures.

• Geotechnical Consultations During Construction
  • On-call Consultations Covering Drainage Considerations
  • Helical Pier Recommendations
  • Drilled Pier Depth Recommendations
  • Footing Depth Recommendations
• Geotechnical Observations and Testing During Earthwork and Grading

  Field services.

  • Drainage Monitoring
  • Proof-rolling
  • Subgrade And Base Aggregate Observation
  • Keyways And Buttresses
  • Field Density Soil And Aggregate Testing

PJC's professional staff has extensive experience in geology, engineering geology, and hydrogeology. Services include slope stability analysis, erosion evaluations, Alquist-Priolo fault rupture studies, groundwater availability studies, septic system feasibility studies, geological reconnaissance, and geologic hazard evaluations.

PJC soils technicians are trained under AASHTO-approved accreditation procedures, concrete technicians are ACI-certified, and construction inspectors hold ICC certifications in concrete and structural steel. PJC inspectors are also certified by numerous state and local building inspection agencies.

• Bolt Testing
• Concrete Inspection
• Epoxy Inspection
• Masonry Inspection
• Pachometer Testing
• Shotcrete Inspection
• Soils Testing
• Steel Inspection
• Welding Inspection

PJC operates a materials testing laboratory performing multiple ASTM tests for soils, concrete, grout, shotcrete, and mortar. Equipment is calibrated annually by representatives utilizing NIST-traceable equipment.

• Classification & Index Tests
  • Moisture Content
  • Moisture And Density
  • Liquid And Plastic Limits
  • Particle-size Analysis
  • Specific Gravity
  • Organic Content
  • Related ASTM Index Tests
• Strength Tests
  • Unconfined Compression
  • Soil Cement
  • Direct Shear
  • Torsional Ring Shear
  • Triaxial Shear Testing
• Moisture Density Relations

  Modified Proctor compaction testing and curve check points per ASTM D-1557 and California 216.

• Volume Change Tests
  • Consolidation
  • Expansion Index
  • Percent Collapse
  • Constant Rate Of Strain Testing Per ASTM Methods
• Permeability & Hydraulic Conductivity Tests

  Constant head rigid wall and triaxial with back pressure saturation testing.

• Concrete & Grout Testing

  Concrete compression cylinder testing and grout prism testing.