Boeing Future Factory     
Everett - Washington

  

In a transition that will see more than 1200 Boeing engineers moving the Everett Assembly Building, the largest building in the world, SSA Acoustics was selected to complete a detailed study and mitigation plan to help design their new offices.  Working with NBBJ Architects, SSA completed more than 500 hours of measurements related to the fabrication lines for the 747, 767, 777, and 787 aircraft.  In some areas monitors were left to record sound data for days at a time.

This was the first detail study of noise ever completed within the facility comprising more that 4,000 noise level  mesurements of riveting, motors, fans, and general facility operation.  This data enabled our team to accurately predict the noise levels that would be present outside of windows to offices, conference areas and open office areas.  

While waiting for these spaces to be completed, more that 600 engineers were officed in a space that was converted to a temporary office, over 240,000 SF of space previously used for fabrication. SSA Acoustics was hired to provide recommendations to control exposed air-handling units, transformer sub-stations, and sound isolation between workcenters.  The trick was to complete the evaluation and recommendations so that contractors could begin work within 45 days!  Working with NBBJ Architects, SSA was able to issue drawings and material specifications and  then select a contractor that would meet the budget and time requirements.

Back in the main facility sound level measurements were used to design the transmission loss characteristics for walls, windows and doors that would control noise from the floor to the office environments.  Additional evaluations were completed to control HAVC system noise and vibration, as well as, interior absorption treatments for open offices, meeting rooms, and private offices.

In the end, measured noise levels from riveting and other fabrication operations 75 85 dB(A) outside of the windows to open office areas were documented during post-construction measurements at less than 42 dB(A) meeting the design criteria.  This achieve the design intent by providing a visual connection to the factory floor and an acceptable interior noise level for a comfortable office environment.

Noise Control Engineers

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