Laboratory Studies of Protection against Propagation of Impact Noise from Staircases

Invited paper

Anna Izewska

Building Research Institute

Tuesday 2 june, 2015, 17:00 - 17:20

Auditorium 2 (592)

Reducing the propagation of impact and structure-borne sound from the stairwell to the adjacent protected areas requires the application of special protection in the form of flexible mounting the staircase elements (as landings and flights of stairs) in the construction of the building. The elastic interlayers used for separating the construction should be specified by the acoustic properties based on laboratory tests. Unfortunately, there are no international standards for this kind of measurements. In Acoustic Laboratory of ITB, number of solutions of acoustic protection of staircases have been investigated. The study has used a standardized method of measuring the sound impact level and has been conducted on the models of parts of a staircase in a 1:1 scale, without and with anti-vibration protection. Applying the method of testing similar to the test methods for floating floors, ΔLw indicators determining impact sound reduction of particular solutions (flexible mounting of landing in the wall and flexible supports of the stair flights at the landings) have been determined. In studies, the different load of the staircase elements, leading the various tensions in the elastic interlayer, have been taking into account.

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