Search

Sound insulation with rear‐ventilated rainscreen façades As early as 1992–1994, more than 30 suitability and type tests on rear‐ventilated rainscreen façades were carried out in the test stand of ita Ingenieurgesellschaft für Technische Akustik mbH. At that time, 60 mm and 120 mm thick thermal insulation was used for the measurements. Since the thickness of the thermal insulation has increased in the course of progressive requirements for energy saving, more than 40 measurements of the airborne sound insulation were again carried out in the laboratory of ita Ingenieurgesellschaft für Technische Akustik mbH on rear‐ventilated rainscreen façades. Most of the measurements were carried out with mineral wool insulation with a thickness of d = 180 mm. Furthermore, the variety of façade claddings and fastening systems has increased, which again underlines the necessity of a new measurement campaign. Since DIN 4109‐34:2016‐07 "Sound insulation in buildings – Part 34: Data for the analytical verification of sound insulation (component catalogue) – Facing constructions in front of solid building components" does not yet contain any elaborations for rear‐ventilated rainscreen façades, the measurement results presented in this article provide useful information for the planning of sound insulation. [ABSTRACT FROM AUTHOR]

Impact sound level reduction, sound insulation dimensions and impact sound levels of prefabricated bathrooms Prefabricated bathrooms have been used in the construction industry for decades. They are assembled in the factory as closed elements with all installations, objects, wall cladding and accessories, and only have to be set up and connected on site. Prefabricated bathrooms are available as concrete cells but also as sheet steel structures that receive a cladding of plasterboard panels on site. DIN 4109 does not contain a component catalog for prefabricated bathrooms, so that manufacturers of such prefabricated bathrooms must submit test certificates on sound insulation. For the most part, these test certificates contain the weighted impact sound level reduction in order to be able to predict the weighted standard impact sound level on the basis of the reinforced concrete raw ceiling. However, there are also test results on the sound insulation dimensions of the partition walls and of the complete system on the building. The following is a summary of the findings on the sound insulation properties of prefabricated bathrooms obtained from a large number of measurements. [ABSTRACT FROM AUTHOR]