AAMA has updated its document about sound control for fenestration products. The document is a source of guidance and technical information for reducing sound transmission through residential and commercial building envelopes.
AAMA TIR-A1 has detailed technical information for reducing sound transmission through residential and commercial building envelopes. New definitions were added to the document, which was last updated in 2004.
Newly defined terms include “Apparent Outdoor-Indoor Transmission Class” and “Outdoor-Indoor Transmission Class,” as well as “Sound Transmission Class.”
One significant update clarifies and differentiates between the two methods of fenestration product classification: Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC). It also clearly defines their appropriate applications.
“The document provides a helpful resource for fenestration designers, architects and consultants who want to enhance their understanding of sound control related to windows and doors,” says Scott Warner (Architectural Testing), chair of the AAMA Methods of Test Committee. “This highly technical topic is presented in laymen’s terms such that building owners and sales staff will be able to understand and describe the important differences between OITC and STC, as well as interior and transportation noise abatement.”