By Eckard Mommertz

ISBN-10: 3764399538

ISBN-13: 9783764399535

Acoustics and defense opposed to noise don't possibly quantity one of the fundamental parameters that as a rule effect the layout of a construction. however, on the very most modern while the lecturer within the seminar room can't be heard, while the noise point in an open-plan workplace reaches insufferable degrees, or while a buddies noise deprives you of sleep, it turns into transparent simply how crucial acoustic should be to daily healthiness. it's not simply live performance halls or the amphitheaters of antiquity that decision for acoustic caliber; particularly, each construction, certainly each room, has an acoustic measurement that alterations in response to the character of its specific requisites. This practice-oriented quantity offers specialist planners and designers but in addition builders with functional wisdom as regards to acoustics in high-rise structure, starting with criteria on equipment of making plans and analysis and relocating directly to the components of acoustics of rooms and structure and noise safety in city making plans. Typologically prepared chapters touch upon right techniques to the topic with examples of other different types of construction reminiscent of residential and place of work structures, colleges, kindergartens, lecture halls, occasion areas, and so forth, simply because acceptable acoustic stipulations make an important contribution to the luck of a undertaking. Schallschutz und Akustik gehören vielleicht nicht zu den primären Parametern, die den Entwurf eines Gebäudes normalerweise beeinflussen. Doch spätestens wenn guy den Vortragenden im Seminarraum nicht versteht, der Geräuschpegel im Großraumbüro unerträgliche Ausmaße annimmt oder das Rumoren des Nachbars einem den Schlaf raubt, wird klar, wie wesentlich die Raumakustik zum alltäglichen Wohlbefinden beiträgt. Nicht nur Konzertsäle oder das antike Amphitheater erheben Anspruch auf akustische Qualität, sondern jedes Gebäude, sogar jeder Raum besitzt eine akustische measurement, die je nach Funktion in ihren individuellen Anfo

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Here again, there are differences in terms of quality and cost. For example, double glazing with a cavity width of, for example, 60 mm and an intervening reveal made from an absorbent material can certainly achieve weighted sound reduction indexes of Rw,P = 45 dB. Single glazing cannot achieve values higher than about Rw,P = 37 dB. Lightweight (non-rigid) wall linings The good acoustic properties of dry forms of construction described above can also be employed as wall linings to improve the sound insulation of solid walls.

Cutting a slit with a trowel is not an adequate way of preventing a structure-borne sound bridge. Where lightweight walls are built off continuous floating screeds, the maximum weighted sound reduction index feasible is R'w ≈ 35 – 40 dB because the sound propagates horizontally within the screed (similar to flanking thin solid walls with a low mass). Another effect should be pointed out here: the resonant frequency of floating screeds usually lies in the range 60 – 80 Hz – the range in which vibrations due to railborne 33 Building acoustics Suspended floors and floor finishes a 1 b c d e f g h i 2 1 traffic also occurs.

One remedy is to use fixings that dampen the structureborne sound transmissions. Roof structures The airborne sound insulation of roofs is usually only relevant when the level of external noise is high, or in the case of venues. The weighted sound reduction index of a pitched roof with insulation over or between the rafters is Rw ≈ 42–52 dB, depending on the particular construction. Lightweight roofs made from steel trapezoidal profile sheeting can achieve similar values; indeed, even higher values are feasible.

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Acoustics and Sound Insulation by Eckard Mommertz

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