E. Barrett Prettyman Courthouse


The E. Barrett Prettyman Courthouse project consists of the new construction of the largest courthouse construction project in Washington, DC within the last 50 years. The facility includes approximately 355,000SF. A 6-story annex was also constructed adjacent to the new courthouse for the General Services Administration (GSA). The annex connects to the courthouse by an atrium. The overall project includes nine (9) courtrooms, 19 judge chambers, nine (9) new courtrooms, 15 chambersets, and administrative office space.


Specialized Engineering was responsible for monitoring Construction Quality Assurance/Quality Control (QA/QC) during the phases of construction. Services include testing and inspection of the following:

  • Structural Fill
  • Utility Backfill
  • Reinforcing Steel
  • Concrete Pre-Placement of Elevated Slabs
  • Cast-In-Place Concrete
  • Pre-Cast Concrete Connections
  • Structural Masonry (Mortar/Grout)
  • Structural Steel
  • Fireproofing
  • Stone Sub-base
  • Hot-Mix Asphalt
  • Batch Plant Procedures

Specialized Engineering is conducting laboratory testing and analysis of proposed fill materials, concrete cylinders, masonry grout, fireproofing density samples, hot-mix asphalt, and stone sub-base.

During construction, Specialized Engineering made numerous recommendations related specifically to the foundation system. As drilled piers were being installed, Professional Geologists from Specialized Engineering were able to minimize the costly over-excavation of rock that was suitable for the foundation support system. Concrete placement techniques were reviewed and efficient strategy recommendations were presented that ultimately saved the client and owner costly processes and the contractor from time delay. Wish to learn more about our involvement with this project? Please contact us at 800-773-3808.