Flooring's Role in Acoustics

  • By Bob Bethel
  • 04/01/17

When it comes to improving in-class student learning and teacher instruction, multiple factors must be considered. One important factor that should not be overlooked is acoustics.

A number of studies show there is a direct correlation between acoustics and improved student performance. In fact, research shows products with high Noise Reduction Coefficients (NRC) and Impact Insulation Classifications (IIC) promote better voice recognition in the classroom. Inappropriate levels of background noise and reverberations can hinder reading and spelling ability, affect behavior and attention and affect concentration and academic performance.

Laboratories typically use two tests to measure the acoustic properties of interior surfaces and finishes: airborne noise reduction and structure-borne noise reduction.

The airborne noise reduction test, ASTM C423-02a, measures a surface’s ability to absorb airborne sounds, which contribute to ambient (background) noise. A floor covering’s measure of effectiveness in absorbing airborne sound is expressed as a Noise Reduction Coefficient (NRC). The greater the NRC, the better that product is at absorbing airborne sounds.

The structure-borne noise reduction test most used for flooring is ASTM E492-09. This test measures the material’s ability to reduce impact sound transmission into the space below. This test is important to perform on flooring materials selected for multilevel school buildings. Flooring products undergoing this test are expressed as a whole number, the Impact Insulation Class (IIC). The higher the rating the greater the sound insulation.

Soft floor covering materials such as carpet or textile composite flooring are excellent solutions for reducing both airborne and structureborne noise. They have the ability to absorb more sound and transmit less sound than other types of surfaces.

This article originally appeared in the issue of .

About the Author

Bob Bethel is the director of Business Development, Education, for J+J Flooring Group. J+J offers an online calculator, floorlifecost.com. Bob can be reached at [email protected] or 800/241-4586.

Featured

  • RenewAire Releases DX Cooling Coil for Two Existing Energy Recovery Ventilators

    HVAC and indoor-air-quality solutions provider RenewAire recently launched the new HE+DX Coil, a duct-mounted system for the company’s existing HE07 and HE10 energy recovery ventilators (ERVs).

  • Georgia State University Plans Campus Transformation

    Georgia State University in Atlanta, Ga., recently received an $80-million gift that will go toward the largest campus transformation project in university history, according to a news release. The contribution from the Robert W. Woodruff Foundation will go toward a planned $107 million in campus upgrades across nine projects in downtown Atlanta.

  • UTEP Celebrates Construction Milestone for New Academic Building

    The University of Texas at El Paso in El Paso, Texas, recently held a “topping out” ceremony for its new learning complex, Texas Western Hall, according to university news. The construction milestone marks the placement of the last beam of a structure in progress.

  • Texas A&M Breaks Ground on New Space Institute

    The Texas A&M University Space Institute recently broke ground next to NASA’s Johnson Space Center in Houston, Texas, according to a news release. The Nov. 15 groundbreaking ceremony followed the Nov. 7 approval by the Texas A&M University System’s Board of Regents of $200 million for the facility’s construction.

Digital Edition