The licence of first occupation is a key step in the obtaining the document administrative document issued by the public administration justifying that a building has been constructed in compliance with the legal requirements for its construction and that it is suitable for occupation.
One of the reports required to obtain the licence of first occupation as a key step is the one that indicates compliance with the DB-HR of the cechnical building code. DB-HR is a document that specifies the basic noise requirements that must be met and exceeded.
Continuing with the sound insulation requirements of DB-HR in residential buildings, these are:
- Party walls between adjoining buildings.
- Activity site and facilities.
- Facades, roofs and floors of outdoor spaces.
- Enclosures of adjoining dwellings.
- Partitioning.
Therefore, airborne sound insulation, impact sound insulation and façade sound insulation are measured as part of the test.
In addition, indoor and outdoor noise immission is also measured, both during the day and at night.
However, the complexity will depend on neighbouring and adjacent enclosures and the area in which the measurement takes place.
Steps for measuring and testing sound insulation in DB-HR:
Previous dataCollect data from the area, know the value of the noise index of the area where the building is located.
Zoning and requirements: To know the uses of the building, in this case a residence, and to know the requirements that apply.
Choice of option: There are two sound insulation options, the simplified option which contains tables of solutions to sound insulation requirements and the general option which consists of a predictive calculation and simulation method.
Definition of the constructive elements and meetingsPartitioning elements of slab, partition walls and façade can be combined. However, there are some combinations that are not suitable for acoustic insulation and can therefore be penalised, and it is therefore important to provide the joints of these elements with adequate absorption.
Once the acoustic tests have been completed and taking into account the requirements of the regulations, the final report can be drawn up and the acoustic certificate can be obtained in order to obtain the first occupancy licence.
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