GEOTECHNICAL ENGINEERING

PAVEMENT DESIGN & TESTING

  • California Bearing Ratio (CBR) sampling and testing
  • Soil test borings
  • DCP testing for in-situ CBR values
  • Sub-grade stabilization design
  • Geo-textile/geo-grid stabilization
  • Lime stabilization
  • Soil-cement and cement treated aggregate (CTA) stabilization
  • Bridging design over yielding sub-grade
  • Flexible and rigid pavement design
  • Existing pavement condition determination
  • Pavement construction specifications
  • Pavement construction testing (roller patterns & density)
  • Pavement mix design
  • Pavement coring
  • Asphalt laboratory testing (extraction/gradation, Marshall stability, density)

FOUNDATION DESIGN

  • Footing design: bearing capacity, settlements, uplift, eccentric loading
  • Pile design: timber, concrete, auger cast
    • Pile compressive and tensile capacity
    • Pile lateral loading and deflection (L-pile)
    • Pile installation criteria & pile driving analysis (PDA) testing
  • Sub-grade modification and improvement design and analysis (surcharge and dynamic compaction)
  • Groundwater control design
  • Load transfer platform

FIELD EXPLORATION

  • Soil test borings – standard penetration testing (SPT) – land and water
  • Cone penetration testing (CPT) and dilatometer (DMT) probes
  • Soil and shear wave velocity testing for seismic site class determination
  • Hand auger borings
  • In-situ permeability testing
  • Test pit excavations
  • Geo-probe sampling
  • Dynamic cone penetration (DCP) testing
  • Pavement coring

BULKHEAD AND RETAINING STRUCTURES DESIGN AND ANALYSES

  • Foundations (deep and shallow)
  • Stability (lateral, overturning, global)
  • Settlement and failure inspection and analysis
  • Modular segmental retaining wall design (reinforcing with geogrid)