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Features to be considered when specifying an acoustic partition:

  • The type and level of noise nuisance
  • Reduction of noise transmission from one space to another
  • The Rw (dB) ratings of the manufacturers; not just the dB rating which can be manipulated (NB This is the sound reduction from the partition not an absolute noise level)
  • Reducing the number of breaks in any partitioning run as much as possible
  • Being mindful that all manufacturers acoustic ratings are laboratory tested
  • Remembering that the weakest link in the final on-site installation is unlikely to be the partition itself but its abutment to the building structure or peripheral leakage.

sound leakage partitions

Testing

 

  • BS EN ISO 140 Acoustics – measurement of sound insulation (means of measurement)
  • BS EN ISO 717 Acoustics – ratings of sound insulation (single figure classification)

 

Noise Levels

Recommended maximum noise level (dB) inside various environments

  • Offices 40-45dB
  • Large Offices 45-50dB
  • Classrooms 40dB
  • Large Lecture Room 35dB
  • Music Room 30dB

 

Acoustic performance that can be expected from good quality commercial partitioning

  • Double glazed (6mm thick glass): 39Rw(dB)
  • Double glazed (10mm thick glass): 43Rw(dB)
  • Single doorset: 30Rw(dB)

 

Further references to Acoustics and Glazed Partitions can also be found in the following section on Glass