buildings acoustics Classification: UNI 11367
published shortly in the Council of Ministers decree on the classification of the acoustic requirements of buildings
Ross Calabrese 23/07/2010 - It was published last July 22 to the UNI 11367 "Acoustics in buildings - Rating of sound housing units - Evaluation and verification work."
The standard defines the acoustic classification of buildings based on measurements taken at the end of the work, which will inform future owners / residents on the acoustic characteristics of the dwelling and to protect the various actors involved in the construction process (designers, manufacturers of building materials, manufacturers, vendors, etc.). from possible future claims.
The UNI 11367 applies to all types of buildings, except those used for agricultural, industrial and handicraft. Within the scope of the rule, the acoustic requirements of hospitals, clinics, nursing homes and schools are defined by a specific appendix.
The UNI 11367 provides four different classes of acoustic efficiency, ranging from Class 1, which identifies the highest level (quieter), class 4, which is the lowest (louder): It is considered that, although the level performance "Basic" is represented by the third class, the vast majority of Italian buildings that currently exist do not even reach the fourth grade.
The class is given - on the basis of measurements of noise levels and not only design data - with the individual units and not the whole building (for example, in the case of a condominium, the class must be assigned to each of the apartments that compose it, and not generically to the entire building). If, on the one hand, this makes it difficult to determine acoustical efficiency, the other is a better guarantee on the final result.
The overall evaluation of efficiency must be accompanied by tests for each requirement considered: they are subject to a classification of facade insulation, isolation from neighbors (both for aircraft noise, both for foot traffic noise) and the noise level of the plant. In the case of the hotels are also considered as the noise insulation between rooms in the same housing unit (eg, between the rooms).
development of standards was attended by over 60 experts representing all interests "at stake". In fact, all the steps that converge in the completion of the building are key to the acoustic results: planning, execution of works, the laying in place of the materials, construction management, any inspections during construction, etc..
"The rule of acoustic classification of buildings - Piero said Torretta, UNI-President is in addition to the energy performance of buildings (UNI TS 11300), by improving the information available to the user of the asset building. Framework, with the mechanism of graded classification gives the building a fine new economic value related to the ability to meet the needs of that user often intangible (convenience, privacy, CO2 emissions, material consumption ...).
Recall that by July 2010, the Government must enact the new rules on sound insulation in buildings, implementing the delegation referred to in Article 11 of Law No 88, July 7, 2009.
One of the next Ministerial Council will consider two measures:
- an enactment relating to noise standards;
- a legislative decree on the classification of the acoustic requirements of buildings.
The definition of "criteria for the design, construction and renovation of buildings and construction of transport infrastructure, in order to protect against noise" will come with a decree of the Minister of Infrastructure and Transport, in consultation with Minister for the Environment (read more).
Source: UNI (reproduction reserved)
http://www.edilportale.com/news/2010/07/normativa/classificazione-acustica-edifici-pubblicata-la-norma-uni-11367_19672_15.html
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