Sound Ratings Of Concrete Block Walls

For example a thick concrete wall will block more sound than a thin gypsum 2x4 wall.

Sound ratings of concrete block walls.

Concrete masonry walls are often used for their ability to isolate and dissipate noise. Stc ratings for concrete masonry walls are determined using standard method for determining the sound transmission class rating for masonry walls tms 0302 ref. Note that in the low frequency range important for music theaters traffic aircraft and most other real world noise sources the lower stc wall is literally 30 decibels better yet lower stc. Decibel ratings for our concrete blocks by multiple factors including workmanship wall ties finishes floor roof flanking junctions and the transmission of sound from other parts of the building and neighbouring structures.

Sound reducing paint is a suitable diy option for controlling the noise level in a room made from concrete block walls. Ratings for concrete masonry walls tek 13 1c sound 2012 introduction unwanted noise can be a major distraction whether at school work or home. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall. National concrete masonry association 2007.

Stc ratings for masonry walls. When the mass of a barrier is doubled the. Leaf thickness 1 4 compared with the results of other labora 1 2 3 1 2. We see two walls.

This rating can be 1 2 3 1 1. 8 concrete block wall painted with 1 2 drywall on independent steel stud walls each side insulation in cavities stc prediction edit there are several commercially available software which predict the stc ratings of partitions using a combination of theoretical models and empirically derived lab data. For the fifth and final section heading called the sound transmission class or level choose among the following. Cellular and hollow blocks are not permitted for use in robust standard detail.

Adding mass the weight or thickness of a partition is the major factor in its ability to block sound. First it effectively blocks airborne sound. Mass is commonly added to existing walls by adding additional layers of gypsum. Ncma tek 13 1c revised 2012.

Controlling sound transmission through concrete block walls construction technology update no. Leaf thickness 1 4 tory tests which use the same rating pro 1 2 3 1 3. Noise control with concrete masonry tek 13 2a. The sound transmission class stc rating provides an indication of how effectively a given wall prevents sound transmission across a range of frequencies.