Proj Overview

The FBI GSA Field Office complex consists of a three-story office building (121,500 SF), single-story Annex Services building (23,000 SF), Visitor’s Receiving Building (900 SF) and a covered parking canopy system. The exterior facade is primarily architectural precast concrete, which is accented by a
combination curtainwall and metal panels.

Interior space includes office space for 300+ employees, executive office space, specialty use space, conference rooms, event spaces, break-rooms, lab and training space, and storage space (including high density). The Annex features vehicle service bays, office space, locker rooms, workout and training facilities. An outdoor courtyard space incorporates a presentation space, sports court, yoga area, and outdoor kitchen.

Construction involved creating a 14.5-acre continuous site, requiring demolition and relocation of roads, sanitary and storm  water systems, and gas and electric utilities. Advanced security technology and materials were integrated throughout due to the nature of the client.

Some of the specialty design/construction innovations included blast rated precast and curtainwall exterior building skin, radio frequency shielded building exterior skin, enhanced interior sound transmission protection and advance screening for staff, visitors and deliveries.

The design concept for the High-End Government Office Building was inspired by the local landscape. The form pattern on the exterior precast was designed to mimic the striations in the local rock formations and allow light and shadow to play off the depressions throughout the day.

The material and color palette of the project was selected to blend with the local environment and play off the light and shadow patterns. The use of patterns and textures define building form with the use of
two high contrast architectural precast colors (dark charcoal contrasting with light sand).

The biggest hurdle with this project was the complexity of the very specific blast requirements. Precast AND glass curtain wall BOTH had to meet the requirements. This involved precast embeds to make it workable and a number of intricate coordination strategies on the precaster side. Enterprise Precast Concrete had to BIM model everything and do clash detection because everything had such strict tolerances. The trade members were heavily involved, holding weekly coordination meetings while
working with a shared REVIT model.

Precast contributed to the sustainability of the project via recycled content and regional materials and a durable frame that allowed for additional considerations. The HVAC system for the complex consists of (3) large roof mounted air handling units that provide conditioned air to the building. A central boiler system provides heating hot water for reheating at zone terminal units located throughout each space. There is a separate energy recovery unit that provides ventilation air to the vehicle maintenance bay. Domestic hot water is generated from multiple high-efficiency water heaters in the building. All interior and exterior lighting systems are LED and the lighting controls include daylight harvesting and a full relay control system. The building automation system controls all of the HVAC, plumbing and lighting controls to maximize energy efficiency and energy reporting. The building is expected to utilize 33% less energy than the ASHRAE 90.1 baseline system. The building is being designed around the Green Globes certification.

 

Project Team

Architect

Hoefer Welker

Engineer

Bob D Campbell and Associates

Contractor

McCownGordon

Owner

U.S. General Services Administration

Precaster

Enterprise Precast Concrete

Precast Specialty Engineer

Enterprise Precast Engineering

PCI Certified Erector

Building Erection Services, LLC

Image Credits

Bob Greenspan Photography and Enterprise Precast Concrete (completed photos)

Image Credits

Enterprise Precast Concrete (plant and site progress photos)