Delon Hampton & Associates (DHA) provided civil and structural engineering consulting services for this mixed-use development containing 187,000 gross SF of office and condominium space with two and a half levels of below-grade parking.
DHA designed the structural system with mild steel, flat slab ground floor and parking garage and concrete shear walls below grade. The above-ground portion consisted of post-tensioned flat plate with concrete shear walls for the condo portion. We performed framing studies during schematic design to compare applicable framing solutions and explore project limitations and constraints. Deep foundations were utilized due to a portion of the office tower extending beyond the footprint of the garage, which is adjacent to the existing WMATA transit station's escalator and elevator.
DHA also coordinated with District of Columbia agencies to determine design requirements that would affect utility sizing, grading, streetscape, setbacks, stormwater management, and water and sewer. We obtained and reviewed existing utility records and coordinated with the owner and design team to identify any improvements that needed to comply with regulatory requirements. We also provided construction administration services including shop drawing reviews, responses to RFIs and field questions, and site visits during construction.