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Geotechnical Engineering

Group Delta Consultants provide a full range of geotechnical services in support of new construction developments or retrofit/repair of existing facilities or structures. We have decades of local experience in Southern California conducting subsurface geotechnical investigations, site characterization, and geotechnical foundation design recommendations for both public and private clients. Over the years we have developed excellent working relationships with the city/county/state agencies who oversee and regulate these projects. Most soil testing is performed in-house in our geotechnical soils testing laboratory facilities which have been certified by Caltrans (California Department of Transportation), the City of Los Angeles, and AASHTO (American Association of State Highway Transportation Officials). Group Delta has successfully completed a wide range of projects including highway and bridge projects, light and heavy rail, educational facilities like schools or universities, new residential and commercial developments, heavy industrial facilities like refineries and power plants. A typical soils investigation may include a mix of the following geotechnical engineering services:

  • Site explorations including drilling borings and cone penetrometer tests (CPTs)
  • Foundation alternatives analyses
  • Embankment and excavation slope stability evaluations
  • Slope repair recommendations
  • Excavation, shoring, and dewatering recommendations
  • Soil improvement/remediation recommendations
  • Settlement analysis and monitoring
  • Seismic fault investigations
  • Anchor load tests
  • Evaluation of soil bearing capacity
  • Pile driveability and capacity analyses
  • Site grading specifications
  • Probabilistic and deterministic seismic hazard evaluations
  • Liquefaction potential studies
  • Selection of seismic design parameters
  • Stability analyses of reinforced embankments or dikes
  • Stability analyses of slopes, channels and excavations
  • Pile lateral and axial capacity curves
  • Cantilevered, anchored, and braced sheet pile analyses
  • Retaining and flood walls analyses
  • Seepage analyses
  • Dewatering design
geotechnical pile load test and soil nail wall installation
 

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