Geotechnical Engineering

Collier Engineering Company is proud to announce the addition of Geotechnical Engineering and Materials Engineering and Testing to our portfolio of services.  These services support all phases of our projects, from preliminary engineering to project closeout.  These services are managed by J. Sam Vance, P.E. and Jim Beaudoin, respectively.  Together they represent over 65 years of experience in their respective areas of practice.  Services offered include:

  • Performing subsurface investigations and providing assessments of geologic and geotechnical risks of projects and sites.
  • Determining the characteristics of the soil/rock and anticipating the behavior of these materials under loading and stress.
  • Collaborating with the owner and design team regarding proposed improvements to develop the most appropriate geotechnical design parameters.
  • As an extension of the geotechnical consulting services and to provide continuity to the owner and the project, our geotechnical engineer and the materials staff will perform materials testing and field engineering services.We coordinate with the contractor and observe conditions during construction, and make any necessary design modifications and onsite recommendations to keep projects “on time and under budget”.

Materials Testing

Our materials testing lab provides field analyses of materials such as asphalt concrete, Portland cement concrete, aggregates, and soils.  The materials laboratory and field technical staff are an extension of our geotechnical engineering services.  These services ensure high-level quality control on the construction projects with which we are involved.  This wide range of knowledge and expertise also enhances our engineering design services by allowing us to make site-specific recommendations rather than broad, conservative assumptions that are often commonplace in engineering design.  This results in a high-quality, efficient, and sustainable product for our clients.


We offer field and laboratory testing for the following material types:


Natural Moisture
Wet Sieve
Dry Sieve
Loss on ignition
Field Density
California Bearing Ratio (CBR)
Unconfined compressive strength

 Asphalt Concrete

NCAT burn-off
Bitumen content
Sieve analysis
Marshall testing
Rice gravity
Tensile Shear ratio

Portland cement concrete

Field Testing
Specimen storage / curing
Compressive strength

Mortar / grout

Filed Testing
Storing / curing
Compressive Strength


Sieve analysis
Sodium Soundness
Specific gravity

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