Lightweight Acoustical Floors on CLT Slabs

Following current acoustic standards and using common testing equipment, it is difficult to mimic the effects of noise generated in gym areas, as the structure is not being excited at low enough frequencies. As no two buildings are the same, drop weight and in situ tests are recommended when designing acoustic floating floors for gym areas. There are many different types of noise being generated in these facilities. In many cases gyms are opening in existing buildings, where the extra weight and height of a wet system is not feasible, and a well-designed lightweight acoustic floor solution may be necessary.

Buildings near roads or railways can be subjected to ground-borne vibration, resulting in unacceptable levels of structure-borne noise and vibration within. Base isolation helps mitigate this by introducing elastomeric bearings or steel springs between the building and its foundation. Although this is established practice, the available design guidance is limited. This course presents some findings from a theoretical study into the effectiveness of base-isolation for a building founded on piles adjacent to an underground railway. It establishes which aspects of the soil-structure interaction between a building and its foundation are significant, and considers some of the practical implications for design.&nbsp, &nbsp, &nbsp, &nbsp, &nbsp,&nbsp,

There are many types of acoustical floating floors, one of which is a jack-up system. Once the concrete has cured, the isolated slab is raised off the structure using pre-cast boxes. If the use of the room or load conditions change in the future, some of these boxes allow the replacement of the isolators inside them. Replaceable acoustical floor systems are perceived as systems with lower sound insulation (airborne noise) than traditional floating floors. This course presents measurements of airborne sound reduction and impact noise isolation of replaceable jack-up systems and confirm factors that can influence its performance.