Many tall, slender residential building have risen from the streets of Manhattan and other cities over the past decade. Numerous problems have been recently published about acoustic disturbances present in these slender buildings due to deflection, principally from wind. These disturbances occur, not due to any structural weakness of the building, but due to excessive rigidity and lack of resiliency of the interior architectural elements, such as wall studs, tracks and gypsum board. These components must be designed and installed for resiliency in order to respond to the slender building movement, which is essential in order to ensure the building’s structural integrity. This movement consists of deflection and torquing of the slabs relative to each other. These acoustic disturbances cause occupants to lose sleep and cause them to feel unsafe, as though structural failures are occurring. Additionally, interior finishes become warped and lose aesthetic quality. These issues are detrimental to the value of units within these slender buildings. This paper presents case studies of innovative methodologies to solve these acoustic disturbances present in slender buildings. These include methodologies which ensure resiliency of the interior architectural elements. These case study examples have been successfully implemented during the base-unit design and also retrofitted after construction.
Historically, new and existing racetracks and raceways encounter conflict between owners, racecar drivers, and the surrounding community. Racecar drivers enjoy the thrill of a raceway, but neighboring residents often complain about the noise negatively impacting the quiet enjoyment of their homes. This is true even when the homes are near a major highway or road. Raceways and neighboring communities are attempting to find workable solutions without compromise to the safety and enjoyment of the raceway. The presentation discusses objective information used to assist communities or town boards, nearby neighbors, and track owners to engage in productive dialogue of the outcome of the possible solution sets. Multiple solution sets are discussed which are typically acceptable to all parties, including various barriers and other innovative noise mitigation plans. The mathematical modeling and analysis of the topography around the track is presented to show how the local terrain can be used to help to achieve the required level of track noise reduction. The information will be presented through the lenses of three case studies. Two studies demonstrate solutions for specific raceways. The other case study is used to further emphasize the importance of incorporating the local terrain into the solution set.
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