Arup’s fire consultants worked to address the Seattle Library’s challenging interior layout of interconnected spaces, which posed complications for egress and smoke management in the event of fire. The unique building geometry meant that the existing code-specified design approach would not be adequate.
Arup’s consultants analysed fire scenarios and potential designs for managing smoke, evaluating them with multiple computerised models for fire prediction, evacuation and visibility. Based on their study, a smoke management design was implemented that would maintain safety and provide adequate visibility with minor building design modifications.
The review saved an estimated US$300,000 in construction costs by eliminating the need for additional fans, numerous additional dampers, automatic vents and louvers and other ventilation controls. It also addressed aesthetic concerns, allowing the library’s unique façade and lofty main atrium to be built as designed.