M00020435
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ISO DIS 12354-2 2016 Edition, January 28, 2016 BUILDING ACOUSTICS - ESTIMATION OF ACOUSTIC PERFORMANCE OF BUILDINGS FROM THE PERFORMANCE OF ELEMENTS - PART 2: IMPACT SOUND INSULATION BETWEEN ROOMS
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Description / Abstract:
This European Standard specifies calculation models designed to
estimate the impact sound insulation between rooms in buildings,
primarily on the bases of measured data which characterizes direct
or indirect flanking transmission by the participating building
elements and theoretically derived methods of sound propagation in
structural elements.
A detailed model is described for calculation in frequency
bands, in the frequency range 1/3 octave 100 - 3150 Hz according to
EN ISO 717-1, possibly extended down to 1/3 octave 50 Hz if element
data and junction data are available (Annex E); the single number
rating of buildings can be determined from the calculation results.
A simplified model with a restricted field of application is
deduced from this, calculating directly the single number rating,
using the single number ratings of the elements; the uncertainty on
the apparent impact sound pressure level calculated using the
simplified model can be determined according to the method
described in EN 12354-1 Annex K (section 5).
This European Standard describes the principles of the
calculation scheme, lists the relevant quantities and defines its
applications and restrictions. It is intended for acoustical
experts and provides the framework for the development of
application documents and tools for other users in the field of
building construction, taking into account local circumstances.
The calculation models described use the most general approach
for engineering purposes, with a clear link to measurable
quantities that specify the performance of building elements. The
known limitations of these calculation models are described in this
standard. Users should, however, be aware that other calculation
models also exist, each with their own applicability and
restrictions.
The models are based on experience with prediction for
dwellings; they could also be used for other types of buildings
provided the construction systems and dimensions of elements are
not too different from those in dwellings.
The 1999 version of this standard has been revised with greater
details for application to lightweight constructions (typically
steel or wood framed lightweight elements as opposed to heavier
masonry or concrete elements).