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This design-build project includes a new six-bay aircraft
maintenance hangar to support operational aircraft stationed at Navy Air
Station Brunswick, Maine.
The Sheridan Corporation, functioning as a subcontractor to
the JN Gray Company, was a member of the successful design/build team that was
awarded a contract to design and construct this project for the Navy. Sheridan
teamed up with Butler Heavy Structures to provide the design, fabrication and
erection of the steel superstructure for this 190,000 square foot
hangar.
The structure incorporated two door openings into the hangar that
were 385 feet wide with a clear height of over 50 feet. This resulted in an
overall building height of 80 feet to accommodate this opening.
While the design of the door openings was a challenge, the
erection of the box trusses was equally as challenging. The box truss was
constructed of individual wide flange members with most connections having
upwards of 100 bolts. Each of the trusses were assembled in four sections on
the ground and then lifted on to steel shoring towers that were erected on
concrete foundations under the truss. Once the entire 500 ton truss was
assembled atop the shoring towers, a hydraulic jacking system slowly lowered
the entire truss until it supported its own weight.
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