PERFORMING ARTS CENTRE, SEVENOAKS SCHOOL

摘要

The concert hall's timber roof, a major feature of the building, was designed to provide optimal acoustics. The roof is supported on a slender concrete frame structure. The trusses span 18m with a 50° pitch, and compression members are solid Douglas fir in lengths up to 9m. The tensions members are steel rods with Daversteels couplings. Trusses were fabricated by Construction Timber. Douglas fir common purlins span 3.6m between the trusses, and support Douglas fir boarding. The form of the roof provides the acoustic volume needed, and its constructional detail diffuses and modulates sound reflections. Above the visible construction, 11 further layers of construction create a lightweight but highly soundproofed roof.