Concrete Floor Sound Attenuation

Example a concrete floor and sound attenuation.

Concrete floor sound attenuation.

Carpet with an nrc rating of 40 50 is the most efficient absorptive material. The mass m of a concrete floor with density 2300 kg m 3 and thickness 0 2 m can be calculated as. Determining sound transmission class stc for concrete masonry. M 2300 kg m 3 0 2 m 460 kg m 2.

From the chart above the mean sound attenuation for the floor can be estimated to. Vinyl cork and rubber have a fairly high nrc rating with hardwood bamboo tile and stone at the bottom of the scale for sound absorption. Dl 52 db. Sound control requirements are becoming much more stringent in canada.

With the national building code nbc expected to change in the near future builders are taking a proactive approach in increasing their sound transmission class stc and impact insulation class iic ratings in multi family hotels and retirement residences. The large mass weight provides for a great deal of sound isolation from vibrations entering or leaving the room. Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications the stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour stl is the decrease or attenuation in sound energy in db. Sound attenuating floor systems.

Simply put walking down a painted dense high psf weight concrete hallway floor ceiling walls in capped boots will be very noisy but the person in the next room may not hear you very well if there are no. The top layer of flooring is only the tip of the iceberg for flooring sound transmission.