Concrete Floor Sound Attenuation

The mass m of a concrete floor with density 2300 kg m 3 and thickness 0 2 m can be calculated as.

Concrete floor sound attenuation.

The more the concrete weighs or the denser the concrete the more sound insulation the greater sound transmission loss rating. The attenuation dl at 250 hz can be calculated as. 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. 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. Protecting a concrete slab a concrete slab is generally an asset for airborne sound isolation. Determining sound transmission class stc for concrete masonry.

Carpet with an nrc rating of 40 50 is the most efficient absorptive material. Example a concrete floor and sound attenuation. 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. Dl 52 db.

Sound control requirements are becoming much more stringent in canada. Sound attenuating floor systems.