What is Acoustic Walling?

The following provides information on the requirements for sound absorption in sports halls, gymnasia, dance studios and other normally unfurnished activity spaces.

For more specific information on the Dynamik Acousting Walling please visit the product page here.


Relevant Guidance

Relevant guidance is provided in the following publications:

  • Building Bulletin 93: Acoustic design of schools – Education Funding Agency & Department for Education, Feb. 2015
  • Acoustics of Schools: A design guide – Institute of Acoustics (IOA) & the Association of Noise Consultants (ANC), Nov. 2015
  • Affordable Sports Halls – Sport England, Jul. 2015

Aim Of The Performance Standard & Regulations

The overall objective of the performance standard is to ensure that the design and construction of school buildings provide acoustic conditions that enable effective teaching and learning.

It is now accepted that noise and poor acoustic design have a detrimental effect on pupils’ academic performance and teachers’ vocal health. Pupils with additional learning needs and hearing impaired pupils are particularly susceptible to the negative effects of poor acoustic design.

Practically speaking this means reverberation time (Tmf) which is set out in the below table for different room types.

Type of Room New build (Seconds) Refurbishment (Seconds)
Indoor Sports Hall (>530m2) ≤ 1.5 – 2.0 ≤ 2.0
Assembly/Multi-Purpose Hall 0.8 – 1.2 0.8 – 1.5
Gymnasium/Activity Studio ≤1.5 ≤ 2.0
Dance studio ≤1.2 ≤1.5
Drama studio ≤1.0 ≤1.0

What Do We Mean By Reverberation Time?

Reverberation time is one of the key determinants of room acoustic quality, and the factor to control with regard to sound absorption. It is the time it takes for a sound to reduce by 60db within a given space. It is measured at different frequencies since certain frequency ranges are more important than others.


How Can We Control Reverberation And Its Classification?

Typically reverberation is controlled by introducing sound absorbing surfaces. More effective absorbers and increased coverage within a room will lead to lower reverberation times. The amount of sound energy a material will absorb is known as the absorption coefficient.

The absorption coefficient for Dynamik acoustic panels is Class C over the frequency range of 500Hz to 2000Hz.


Practical Implications

Once the size of a room is known and the absorption characteristics of the finishes within the room an acoustician can predict the reverberation time. An acoustic consultant can then calculate the amount of sound absorbing material to be included within a room based on the class of material specified but also to meet a particular room’s usage and a designer’s preference.

We have experience of working with acousticians to achieve a practical workable solution.

Simplistically sound absorption should be distributed within a room with a minimum of 25% from the walls, 30% from the soffit and the remaining 45% provided by finishes on any of the room surfaces. It is however beneficial for the sound absorption materials to be installed at a lower level rather than higher to improve their effectiveness.


Features of Dynamik Acoustic Sports Wall

Assist in Meeting Building Regulation Requirements

Building Bulletin 93 sets out the acoustic requirements for various sports areas which should now be complied with. Sport England and the Department of Education – Education Funding Authority (EFA) expect full compliance.

Acoustic Absorption Coefficient

Panels are a Class C sound absorber which is above the Class D level typically specified.

Easy Installation

The system is quick and easy to install with hidden clips that provide a 7mm regular gap between adjoining boards.

Shock Absorbing and Indentation Resistant

Panels are constructed from hardwood ply, providing a high degree of shock absorption and indentation resistance, including that imposed by cricket and hockey balls.

Factory Finished

Panels are factory finished and include a surface that is resistant to scratching and are totally maintenance free.

Fire Rated

to European Class D as standard but can be rated to European Class C for a premium to satisfy the fire regulation requirements for a particular area.

Choice of Colours

panels are available in a choice of wood effect finishes or can be manufactured in a RAL colour of your choice.

Cost Benefit

Eliminates the need for block work or other wet finishes – provides for a fast and efficient installation.

Technical Specifications

The technical specification of the Dynamik Acoustic Sports Wall is described below. These can be combined with matching solid panels of similar dimensions.

Panel Sizes

2,448mm length by 608mm height and 15mm depth for standard panels or 16mm for fire rated panels.

Panel Weight

standard non-perforated panels weigh 11.5 kg/m2 and standard perforated panels weigh 9.5 kg/m2. Fire rated non-perforated panels weigh 13.5 kg/m2 and fire rated perforated panels weigh 11.2 kg/m2.

Acoustic Panel Perforations

Precision cut 8mm perforations with a 16mm aligned spacing.

Fixings

each panel has pre-routed edges to allow for hidden fixings with a 7mm gap. A special bracket is supplied for this purpose. The panels are typically fitted to metal vertical beams at 491mm centres.

Acoustic Textile

A black acoustic textile is fitted in front of the vertical beams, this effectively hides the gap between the panels and makes the black metal brackets appear to be ‘invisible’.

Mineral Wool

To achieve the sound absorption a mineral wool may need to be installed between the vertical beams this will be recommended by an acoustician.

SFG
Basketball England
NBS Plus
NBS Bim
Mondo
Haro
ASB
Tarkett