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Sava Savov Secondary School in Pirdop renovated its gym – a room of about 700 m². After the floor was replaced, the gym began to echo strongly: every ball, whistle and voice came back many times, and during lessons the noise became exhausting for pupils and teachers.
We modelled the gym and compared the result with the reference of the German standard DIN 18041 for sports halls. Bulgaria has no mandatory reverberation time requirement for a school gym – the regulation for schools gives values for classrooms. According to the model, the reverberation time is about 2.7 s untreated and about 1.9 s with 90 m² of acoustic panels.
Full treatment according to the model needs about 130 m² of acoustic pyramid foam as well – a large investment for the school. So we split the work into two stages, and we funded the second stage ourselves.
130 m² of sound-absorbing surfaces in total. No control measurement was made after installation, so we give no measured figure here – according to the model, the first stage brings the reverberation time down from about 2.7 to about 1.9 s.
Similar problem? See Acoustics and Soundproofing for Public Buildings or contact us via the enquiry form.
“I would like to sincerely thank your company for responding so quickly and carrying out the acoustic treatment.”
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