Building acoustics. Estimation of acoustic performance of buildings from the performance of elements - Airborne sound insulation between rooms1 Scope This document specifies calculation models designed to estimate the airborne sound insulation between adjacent rooms in buildings, primarily using measured data which characterize 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 Hz

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1 General terms

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It is vital that lifts are safe and reliable when in operation such that potential accidents and risks to personnel are minimized

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