CAN-ASC-2.5/ICC A118: Acoustics in the Built Environment - Notice of intent

This notice is to announce that Accessibility Standards Canada intends to develop a new accessibility standard. The purpose of this notice is to avoid duplication in standards development. 
This notice is aimed at other standards development organizations and the public. It does the following:

  • It defines the scope of the standard that we propose.
  • It defines the need for the project.
  • It states the time period during which the public can send us comments about the standard.

Standards development organization

Accessibility Standards Canada

Contact information


Mailing address:

320, St-Joseph Boulevard
Suite 246
Gatineau, QC K1A 0H3



Work program

The work program lists all of Accessibility Standards Canada’s in-progress and completed standards. It is available on our site.

Designation number

CAN-ASC-2.5/ICC A118

Standard type

National Standard of Canada – Domestic 

Standard development activity

Joint Canada-U.S. National Standard

International Classification for Standards (ICS) codes

  • 13.140 Noise with respect to human beings 
  • 17.140 Acoustics and acoustic measurements 
  • 91.040 Buildings 
  • 91.060 Elements of buildings 
  • 91.120 Protection of and in buildings 

SDO Comment Period Start Date: 

Tuesday, December 20, 2022

SDO Comment Period End Date:

Tuesday, January 17, 2023


Note: The standard designation number for this NOI (originally published on December 20, 2022) was updated by the responsible SDO on October 4 2023.

The purpose of CAN-ASC-2.5/ICC A118 is to develop a standard that goes above mandatory minimum technical specifications and produces equity-based technical requirements.

There are common areas where persons with disabilities may face barriers related to acoustics in the built environment. These include, but are not limited to:

  • Types of noise and their varying impact on human listeners
    • Stationary, non-stationary, and interfering speech
  • Figures of merit including:
    • Reverberation time
    • Absorption / transmission coefficients
    • Sound level
  • General acoustic performance including:
    • Noise level from internal sources
      • Equipment in the room
      • Reverberation and echo
  • The noise level from external sources including:
    • Impact noise
    • Environmental noise
    • HVAC
  • Acoustics of specific spaces including:
    • Government of Canada Work Spaces
    • Open plan offices
    • Closed offices including private or group spaces
    • Phone booths including private or group spaces
    • Conference rooms and videoconferencing
    • Common areas such as:
      • Kitchens, and
      • Bathrooms
      • Quiet / recovery rooms
    • Training and teaching spaces
    • Service counters
  • Assistive technologies including:
    • Assistive listening systems
    • Captioning systems, and
    • The interoperability of assistive technologies with personal technologies

Project need

Accessibility Standards Canada was created under the Accessible Canada Act. Its mandate is to prevent, identify, and remove barriers to accessibility for Canadians with disabilities. In pursuit of this mandate, Accessibility Standards Canada develops standards based on the needs of people with disabilities. These needs have been identified in consultations with Canadians with disabilities, including the Governor in Council appointed Board of Directors, who are primarily people with disabilities and have approved the development of this standard.

In addition to these identified needs, Accessibility Standards Canada standards are developed following the principle of “nothing without us”. This means that Accessibility Standards Canada standards are developed with research that has been led by people with disabilities or lived experience, participation of people with disabilities on our technical committees and produce equity-based requirements that take into account the needs and perspectives of people with disabilities. This also means that the public review process for this standard will be accessible, allowing even more people with disabilities to be part of the standards development process.

Date posted

Thursday, December 15, 2022

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.