| 1. |
- Bard, Delphine, et al.
(författare)
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Swiss pendling hammer for decoupling measurement of Swiss methodology for decoupling measurement of service equipment in buildings
- 2012
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Ingår i: 41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012. - 9781627485609 ; 12, s. 10293-10301
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Konferensbidrag (refereegranskat)abstract
- The latest edition of the Swiss standard SIA181(2006) Protection against noise in Buildings [1], introduces a new methodology regarding the tests to be performed in new constructions for noise induced by human using service equipment in bathroom and kitchen. In this method, a specific pendling hammer has been developed especially for evaluating the decoupling efficiency of service equipment. The goals for this work are to determine the advantages and the limitations of method especially for lightweight constructions. For example, in some cases the airborne contribution of the pendling hammer noise can become critical and leads to an overestimation of the uncoupling. This project should also identify the main propagation paths for equipment noise. A large number of in-situ measurements have been done for various building constructions and services equipment in Swiss and Swedish constructions. Some additional laboratories investigations have been conducted to optimize the decoupling of service equipment to fulfill the Swiss requirements.
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| 2. |
- Hagberg, Klas, et al.
(författare)
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Design principles of small multi storey wooden houses
- 2012
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Ingår i: 41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012. ; 3, s. 2327-2333
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Konferensbidrag (refereegranskat)abstract
- Many multifamily houses are produced by small or medium size enterprises (SME's). These developers produce a substantial number of residential units per year. They have normally limited resources and need to have easy access to cost - effective structural solutions. Typical buildings comprise two storeys and four to eight flats. Due to costs and production efficiency these buildings are produced in light material, mainly wood. Each building is unique and the limited size of each project means that it cannot defray costs to adapt each building of interest, to available building system on the market. Instead, the builders need to have access to; 1. structural design guidelines to secure dimensions and acoustic performance; 2. assembly information regarding details; 3. process guidance to minimize risk exposure, secure the final result. This paper describes a typical design procedure and final results, for a small two - storey building comprising six residential units. The procedure fits to an SME, with limited resources for technical development. The building was designed and erected presupposing that everything has to be built "on site". This paper is also an introduction to a new guidance book, being prepared within the Swedish research project AkuLite.
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| 3. |
- Sjöström, Anders, et al.
(författare)
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Modeling walking on a lightweight wooden floor
- 2015
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Ingår i: 44th International Congress and Exposition on Noise Control Engineering (Internoise 2015) : Implementing Noise Control Technology - Implementing Noise Control Technology. - 9781510810822 ; , s. 6263-6270
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Konferensbidrag (refereegranskat)abstract
- The most common sound insulation problem for lightweight timber structures is impact sounds from people walking. This is especially apparent in the low frequency range, due to differences in weight, stiffness, density and repartitioning as compared to more traditional materials. As lightweight timber structures increase their market share, the understanding of their behaviour and the ability to predict the production and spread of these impact sounds by numerical models during the design phase of a building, become more important. The subject of this paper is a typical wooden floor constructed from particleboards on top of wooden beams. The floor is subjected to loads from test subjects walking on the floor. We compare measurements on this floor with simulations of the same floor construct using a finite element model with idealised walking loads. The frequency range of interest here is from 20Hz to 200Hz. The aim of the comparison is to create an accurate model of the floor that can capture the behaviour of the real structure and that can be used in subsequent models of larger structures i.e. multi-storey wooden buildings.
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