Noise Transmission Through Concrete Floor

For laminate the thicker the product the better when it comes to noise reduction.

Noise transmission through concrete floor.

Depending on the material and the frequency the bending wave can travel slower or faster than the speed of sound in air. From the chart above the mean sound attenuation for the floor can be estimated to. Controlling sound transmission through concrete block walls construction technology update no. Warnock this update presents guidelines for controlling the transmission of impact sound through concrete slab and wood joist floor systems in multi family dwellings.

Transmission of impact sound through floors by a c c. National concrete masonry association 2007. Generally an iic rating of 50 will satisfy the building code requirements. Dl 52 db.

The speed of a bending wave traveling through a panel can vary. The speed of any vibration traveling through air sound we hear is a constant. As floor slabs become progressively thinner what consistently effects the achievement of the airborne acoustic design targets between adjacent residential units is the noise flanking transmission through the floor. National research council of canada 1998.

The problems range from noise transmission by noisy upstairs neighbors through adjacent party walls between neighboring units or through windows. It is based primarily on industry supported research conducted by irc 1 impact insulation class. The new zealand building code clause g6 airborne and impact sound specifies minimum requirements for noise transmission reduction for walls and floors that are common between. The attenuation dl at 250 hz can be calculated as.

A much bigger factor is the underlayment that you install soundchoice would be the best option as it has an iic rating of 66 and stc rating of 68 iic is noise transmission within the same space and stc is the transmission to the floor below. The noise control problems associated with floors and ceilings range from airborne noise transmission from voices tvs and music to footfall impact noise and from plumbing noise. For impact noise this is worth the tradeoff because the decoupling element is so effective but it s unnecessary and undesirable in soundproofing a floor if airborne noise is the only concern. Iic is measured in terms of sound impact or how well sound vibration travels through a floor to the room below.

Noise control with concrete masonry tek 13 2a. Iic impact insulation class iic measures a floor ceiling assembly s resistance to the transmission of structure borne or impact noise. For mass a standard technique when soundproofing a floor is to put down one or more layers of mdf or osb. Sound in air always travels at 768 mph.

M 2300 kg m 3 0 2 m 460 kg m 2. The mass m of a concrete floor with density 2300 kg m 3 and thickness 0 2 m can be calculated as. Typically in the new zealand residential market concrete floor systems with lightweight walls are the preferred construction method.