Skip to main content
Add as a preferred source on Google

AAMA Releases Updated Sound Control Document

  • 03/05/15

Schaumburg, Ill. — The American Architectural Manufacturers Association (AAMA) has updated a document specific to sound control for fenestration products. AAMA TIR-A1 provides detailed technical information for the reduction of sound transmission through building envelopes in terms of the design and construction of both commercial and residential buildings. Some new definitions were added to this 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.” The document was prepared for those who require information on how sound is transmitted and measured, and how its transmission can be controlled. It is intended to serve as a guide for anyone from window designers working with architects to sales teams trying to meet customers’ needs regarding sound control.

One of the significant updates to the document is the clarification and differentiation between the two methods of fenestration product classification: Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC), as well as the clear definition of their appropriate application.

“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.”

AAMA TIR-A1, along with other AAMA documents, is available from AAMA’s Publication Store. - www.aamanet.org

Featured

  • Spaces4Learning Trends & Predictions for Educational Facilities in 2026: Part II

    As education leaders look toward 2026, the design of K–12 and higher education facilities is being reshaped by powerful, converging forces. Survey respondents point to the rapid growth of Career and Technical Education, deeper alignment with workforce and industry needs, and the accelerating influence of AI and emerging technologies.

  • From Approval to Opening: Inside Travis Unified School District’s Fast Tracked Campus Expansion

    The Travis Unified School District (TUSD) in northern California includes several elementary and high schools serving over 5,400 students. In 2024, the TUSD Board approved the addition of sixth grade to the Golden West Middle School campus for the 2025–26 school year, setting in motion an accelerated effort to bring new facilities online in less than a year.

  • Pitzer College

    Designing for Change in Higher Ed Learning Environments

    Higher education will continue to evolve, and learning environments must evolve with it. By prioritizing adaptable infrastructure, thoughtful reuse, strong energy performance, and wellness-centered design, campuses can create spaces that support learning today while remaining flexible for the future.

  • UT System Approves First Funds for New Campus

    The University of Texas System Board of Regents recently approved funds to build the first facility of a new campus in far west Fort Worth, Texas, according to university news. UTA West will serve as a branch of the University of Texas at Arlington and is scheduled to open in fall 2028.