Chapter 15.12 of the Burien Municipal Code establishes minimum building construction standards to reduce aircraft noise for properties near Seattle-Tacoma International Airport. Buildings are divided into three noise reduction zones (35 dB, 30 dB, and 25 dB), each requiring progressively higher sound transmission ratings for walls, windows, doors, roofs, and ventilation systems. The code applies to all new construction and most additions intended for human occupancy, with limited exceptions for small remodels and non-inhabited structures like warehouses and garages.Open full document
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This chapter of the Burien Municipal Code (BMC 15.12) establishes minimum requirements for the design and construction of buildings for human occupancy in the vicinity of Seattle-Tacoma International Airport. It defines three noise reduction zones (35 dB, 30 dB, and 25 dB) and specifies minimum sound transmission class (STC) ratings for exterior walls, windows, doors, and roof/ceiling assemblies. Ventilation requirements are also included to ensure buildings can be occupied without opening windows or exterior doors.