Boeing Static Test Phase 2 Facility

The 105,000 sf facility has the capability to house and support several twin-aisle airframes. Civil designed the seven-acre site and enclosed an existing on-site jurisdictional ditch, while construction activities began on the remainder of the site. The project design prominently included the demolition of an existing parking lot and accessories. Additionally, the scope included stormwater analysis and conveyance design, new site utilities, pedestrian pathway layout, fire-lane design with truck turning analysis, and the addition of auxiliary support structures.

Mechanical engineering included air-handling units which were designed to condition the space without horizontal ducting. Electrical engineering included lighting design, electrical distribution design, and provisions for a 400Hz system for aircraft power.

Structural engineering included a customized 119 ft tall steel frame hangar design that included 24 ft deep steel trusses spanning 295 ft, steel-sliding pocket-hangar doors, a steel-framed control-room mezzanine platform, and spread and caisson foundations. The building required a 95 ft clear height below the bottom of the trusses. BRBF frames were considered for the lateral system during design, but a special concentrically braced frame was chosen to save both design and procurement time due to the pressing schedule. Coffman designed the system of house rails which supported the design-build bridge crane with a hook capacity of five tons.

The project was on a fast-tracked schedule, with design and construction overlapping for a total duration of 13 months. The project required working seamlessly with Boeing, the construction contractor, the FAA, Paine Field, Army Corp of Engineers, and the City of Everett. Coffman was the prime consultant for civil, structural, mechanical, electrical, fire protection, and commissioning.