Concrete Floor Sound Attenuation

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.

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 large mass weight provides for a great deal of sound isolation from vibrations entering or leaving the room. 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. 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.

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

Protecting a concrete slab a concrete slab is generally an asset for airborne sound isolation. Determining sound transmission class stc for concrete masonry. From the chart above the mean sound attenuation for the floor can be estimated to. Dl 52 db.

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