Despiau Associates Corp. (DAC) specializes in performing geotechnical investigations and analyzes valuable information to provide structural engineers, project developers, planners, and architects with the pertinent engineering assessments and recommendations needed to meet their project requirements.

Our experienced team of professional engineers evaluates the proposed projects with respect to the site conditions and provides recommendations to optimize project development. Among others, we provide recommendations for: site selection and preparation, foundation design, pavement design, slope construction, erosion control, and general site grading.

DAC offers comprehensive geotechnical support, including site reconnaissance, field and laboratory testing, and construction quality control. DAC engineers work as a team with our clients since the pre-design stages to project completion.

Also, as part of the team of Despiau Associates Corp. we have experienced drilling crews. Each drilling crew is composed of a Foreman and laborers. Among others, the fully owned drilling equipment of Despiau Associates Corp. consists of the following:

     - 2 CME-45
     - 2 Acker Drill N5-C Core Drill
     - 2 Acker Model 1200 PM Pipe Mounted Core Drill
     - 3 Motorized Cathead Tripods

We have the added advantage of being able to replace drilling equipment entirely with similar equipment should mechanical failure impair the equipment beyond a normal repair by our mechanic. The replacement of equipment shall be made within 24 hours.

The Geotechnical Services offered by DAC include:
     - Subsurface Drilling, Sampling, and Field Testing
     - Preliminary Geotechnical Investigations
     - Fill and Debris Area / Volume Assessments
     - Foundation Design Assessments and Recommendations
          - Shallow Foundation Design
          - Bearing capacity of soil and rock
          - Deep Foundation Design and Construction
               - Pre-Cast Concrete Piles
               - Drilled Piers
               - Driven Piles
               - Axial and Lateral Pile Capacity Evaluation
               - Sheet and Soldier Piles
          - Retaining Walls
               - Earth Retention Design.
                    - Cantilever System
                    - Tieback System
                    - Gravity Retaining Structures
          - Retaining Structures Stability
     - Soil Movement Monitoring
     - Geologic Studies
     - Geotechnical Feasibility Studies
     - Geotechnical Engineering
     - Foundation Investigations
     - Slope Stability Investigations
          - Inclinometers Installation
     - Fault Investigations
     - Liquefaction Analysis
     - Seismic Analysis
     - Settlement Analysis
          - Piezometers Installation
     - Consolidation Analysis
     - Underground Utilities
          - Trench Safety
          - Earth Pressures
          - Groundwater/Seepage Control
          - Backfilling
     - Percolation Feasibility Studies
     - Pavement Design
     - Grading Observations
     - Geophysical Investigations