Implement acoustic control measures to minimize interior-sourced noises

Rationale: Acoustic control measures that minimize unwanted interior-sourced noise — such as installing silencers in HVAC ducts and sealing interior-facing doors — can support improved cognitive function and sleep and prevent associated health issues such as hearing loss, accidents, and cardiovascular disease.

Requirements

Demonstrate compliance with one of the options below:

Option 1 - Interior Acoustic Control Measures (Full Credit):

Demonstrate that a minimum of two interior acoustic control measures are implemented to limit interior-sourced noises caused by other occupants, appliances, renovations, busy indoor common areas, and other interior sources that meet the below.

1. Implement a minimum of two of the following interior acoustic control measures:

• using sound and vibration-absorption materials such as fiberglass thermal insulation
• sealing interior-facing doors
• adding acoustic panels to floors and ceiling
• installing silencers in HVAC duct lines.

Option 2 - Sound Transmissing Class (STC) Rating (Full Credit):

Demonstrate compliance with the following requirement:

1. Confirm the building meets all of the following Sound Transmission Class (STC) ratings:

Qualifying heat island mitigation practices include but are not limited to the following:

• all interior wall construction materials are at least STC 50
• floor construction materials are at least STC 50 in all residential areas of dwelling units
• floor construction materials are at least STC 60 in all bedroom areas of dwelling units.

Compliance Documentation

Types of compliance documentation required:

• Annotated design drawings
• Certified statements
• Annotated photographs