As part of a Large Multiple Award Construction Contract (LMACC) with Whiting-Turner Contracting Company, KCI provided engineering services for the RDT&E Support Facility project for the U.S. Naval Facilities Engineering Command Mid Atlantic (NAVFAC). KCI was the engineer of record for the design of this three-story support facility located in Bethesda, Maryland at the Navy’s Carderock Division Base. The 32,000-square-foot facility was being designed to meet a minimum LEED Gold certification. Our team was the design lead providing all site/civil, geotechnical, mechanical, electrical, fire protection, structural, Anti-Terrorism/Force Protection (ATFP), and data/telecommunication design services. KCI also provided topographic survey of 10 acres to support the design-build effort.
Mechanical and structural drawings were developed using Revit 3D Modeling, and civil plans were developed using Civil 3D. All 3D designs were linked into a fully integrated project model.
Special systems of note included the use of LED site lighting, a green roof, roof-mounted photovoltaics, and solar hot water systems. The hot water system design consists of two redundant 400 MBH input gas fired condensing boilers. Two 40 GPM pumps circulate the heated water to approximately 40 VAV reheat boxes, two rooftop VAV air handlers, and several unit heaters throughout stairwells and service spaces. The system was set up on a 35-degree delta so the entering water temperature is 115 degrees Fahrenheit and the leaving is 150 degrees Fahrenheit. The boilers, pumps, and system specialties (air separator, expansion tank, etc.) are all housed in the first floor mechanical room.
The structural systems are designed to prevent progressive collapse, and the site design accounted for ATFP requirements. The Carderock base is considered a historic district requiring additional reviews and approvals of the building façade and concept. In addition the design had to comply with ATFP for stand offs of all parking areas and access roads. The building façade will follow the adjacent structure’s art-deco façade.