Gymnasium/Sports hall/Swimming pool (<1500 m³)

Physical training, ball games, swimming and water games are associated with high sound levels. It is important to be able to communicate – instructions must be able to be given and heard. Naturally, consideration must also be given to safety aspects when designing the right sound environment in these spaces.

• Large open areas encourage conversation at a distance, which results in people tending to raise their voices, trying to be heard over others. Sound breeds sound, creating a disturbing "cocktail of noise".
  
• Hard surface materials create problematic sound amplification and sound propagation. The sound is transported a long way and so disturbs a large number of people.
  
• Hard flooring creates noisy footsteps.
  

• Reverberation time of 1.0 seconds. To achieve this, a full acoustic ceiling is needed of sound absorption class A (in accordance with EN ISO 11654).
• Certain wall surfaces may also need to be fitted with sound absorbers to avoid flutter echoes.
• In spaces of more than 1500 m3 a somewhat longer reverberation time must be accepted.

• For gymnasia and sports halls Building Bulletin 93 (BB93) states that an unoccupied mid frequency (Tmf) reverberation time of <1.5 seconds must be achieved. This raises to <2 seconds unoccupied mid frequency (Tmf) reverberation time for swimming pools.
  
• Swedish Standard 02 52 68 recommends a reverberation time of 1.0 or 1.2 seconds, depending on the selected quality level. This applies to normally furnished but unoccupied rooms. The above figure is the highest recommended value for the frequency range 250 - 4,000 Hz. At 125 Hz a value 20% higher is permitted.

• Due to the risk of damage, the acoustic ceiling may need an impact resistant surface layer.
  

• Ecophon Super G Plus for the ceiling.
• Ecophon Wall Panel C/Super G for the walls.

• Ecophon Hygiene Performance with corrosion resistant grid system in the splash zone.
• Ecophon Focus elsewhere.

• Ecophon Super G (impact resistant surface layer).