Geotechnical Services




RDA Geotechnical Services

In an effort to expand and to provide comprehensive consultations and solutions to meet the client’s needs, RDA provides Geotechnical Engineering services for transportation, municipal infrastructure, and site/land development projects. As part of this practice, we specialize in geotechnical subsurface investigations and evaluations for various geotechnical problems and design challenges. We plan and execute subsurface explorations to fit your project needs and budget constraints. Our experience includes feasibility studies, soils review, foundation analysis, laboratory classification, and recommending cost-effective solutions for complex problems involving problem soils.

We focus on providing professional service to the client and aiming at more cohesive and flexible approach to ensure that we are responsive and meet the schedule and demand for our clients. We’re confident our clients can expect high-quality technical service and innovation, timely project execution, and professional post-project support.

RDA engineering professionals have a strong and diverse background and bring expertise in:

  • Roads and bridges
  • Parks and recreational facilities
  • Hospitals, parking garages, higher education, and PK-12 Schools
  • Commercial, retail, municipal, manufacturing, and industrial facilities
  • Stormwater management and drainage facilities


RDA Geotechnical Services

  • Project consultation
  • Engineering analysis and design
  • Slope stability studies/ earth retaining structures
  • Foundation analysis for shallow and deep foundation design
  • Pavement evaluation and design


RDA Delivers Expertise, Experience and Service

RDA understands that we are only as good as the work that we do – our work is our reputation. This simple fact is what our business is built upon and a principle that we take to heart. Let us put our reputation to work delivering your geotechnical engineering service’s needs.

Contact: Michael Sun, Director of Geotechnical Services

11100 Endeavor Court
Suite 200
Manassas, VA 20109

Phone: (703) 368-7373


RDA CareersWe help you design the path, construct your job and build your future. RDA is always on the lookout for qualified and motivated individuals to join our team.

Manassas (HQ)

11100 Endeavor Court
Suite 200
Manassas, VA 20109

Manassas (Satellite)

7655 Coppermine Drive
Manassas, VA 20109



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