Harmonizing the science of Engineering with the art of Architecture
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Design-Build Specifications for Mechanical Systems,
Acoustical Finishes & Elevators
The Ventilation Buildings at the North and South SR-99 tunnel portals greet travelers as they re-emerge to the City. The ventilation stacks identify these as working buildings, facilitating both routine and emergency tunnel ventilation.
North Ventilation Building under construction.
Greenbusch Group, as a subconsultant to NBBJ Architects, collaborated with WSDOT and the Architect contributing to mechanical, acoustical and elevator sections of the design/build performance specifications for both the north and south ventilation buildings.

Greenbusch acoustical and mechanical designers worked closely to integrate the mechanical system noise and vibration control with the HVAC bridging documents to ensure appropriate sound isolation for office and administrative spaces.

The facility is being designed to LEED® Silver standards.
Greenbusch provides technical expertise in acoustical engineering, audio/video consulting, mechanical engineering, vertical transportation design, commissioning and hydroacoustics services.


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