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Solutions
AcouBAT by CYPE
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AcouBAT by CYPE

Italian acoustic code D.R.A.P.D.E. (D.P.C.M. 5 December 1997)

As of the 2018.f version, AcoubatBIM by CYPE allows users to import the configuration of the acoustic limits covered in D.P.C.M. 5 December 1997 (Determinazione dei requisiti acustici passive degli edifici). The types of spaces that can be selected, with acoustic requirements, are the following:

Categoria A: edifici adibiti a residenza o assimilabili
Categoria B: edifici adibiti ad uffici e assimilabili
Categoria C: edifici adibiti ad alberghi, pensioni ed attività assimilabili
Categoria D: edifici adibiti ad ospedali, cliniche, case di cura e assimilabili
Categoria E: edifici adibiti ad attività scolastiche a tutti I livelli e assimilabili
Categoria F: edifici adibiti ad attività ricreative o di culto o assimilabili
Categoria G: edifici adibiti ad attività commerciali o assimilabili

French acoustic code NF NRA 2000

As of the 2018.f version, AcoubatBIM by CYPE allows users to configure the acoustic limits of the Nouvelle Réglementation Acoustique (NRA). Specifically, the verification of the following decrees has been implemented:

Arrêté du 30 juin 1999 relatif aux caractéristiques acoustiques des bâtiments d’habitation
Arrêté du 25 avril 2003 relatif à la limitation du bruit dans les hôtels
Arrêté du 25 avril 2003 relatif à la limitation du bruit dans les établissements d’enseignement
Arrêté du 25 avril 2003 relatif à la limitation du bruit dans les établissements de santé
Arrêté du 30 mai 1996 relatif aux modalités de classement des infrastructures de transports terrestres et à l’isolement acoustique des bâtiments d’habitation dans les secteurs affectés par le bruit

Spectrum adaptation term

As has been implemented in CYPESOUND, as of the 2018.f version of AcoubatBIM by CYPE, users can tell the program to add the spectrum adaptation term C or Ctr (depending on the predominant type of noise) to the acoustic insulation index against outdoor airborne noise.

Outdoor airborne noise on façades

As has been implemented in CYPESOUND and CYPESOUND NRA, now, in AcoubatBIM by CYPE, users can force the outdoor airborne noise limit value of a façade of the project. If this option is selected, the program will compare the level of insulation that was obtained for the façade with this new value instead of that indicated in the general parameters of the application.

Furthermore, if the French NRA code is used (also implemented in this version in AcoubatBIM by CYPE), an assistant to determine this limit based on “Larrêté du 30 mai 1996 modifié en juillet 2013”.

Minimum reverberation time

As of the 2018.f version, it is possible to indicate a minimum reverberation time limit in the configuration of the types of spaces.

Reverberation time and equivalent acoustic absorption area depending on volume

As occurs in CYPESOUND, as of the 2018.f version, a new formula has been added to limit the reverberation tine and equivalent acoustic absorption area of a space depending on its volume.

Reverberation time and equivalent acoustic absorption area with and without furniture

Now users can calculate the reverberation time and equivalent absorption area of a space taking into account the furniture included in it, or not taking it into account or with both options.

Reverberation times depending on volume

A new option has been included in the configuration of types of spaces that allows users to indicate different reverberation time limits depending on the volume of the space.

Airborne noise and impact noise insulation between spaces with doors or windows

Now users can indicate a limit value for airborne noise or impact noise insulation between spaces when there are openings between them, different to the value provided for when there are no openings.

Analysis of sound transmission via corridors or halls

The difference of the normalised level for the acoustic transmission of indirect airborne noise via halls or corridors, D_n,s, has been implemented in the analysis. To do so, the method described in “section 2.1” of “Annex F” of the EN 12354-1 code has been used.

To activate this analysis, users must select, in the general parameters of the project, the option “Calculate the indirect airborne noise transmission across this space” for each type of corridor or hall.

When a project is linked to a BIM model containing geometric information, the project automatically detects the orientation and relative distance between doors with the aim to determine the value of the parameter C_doorposition, which is required when using the formula of the code.

In the results table of the “Analysis” tab, this new analysis will appear in the receptor space with a different icon and the reference of the intermediate space. When opened, the analysis of the insulation between the emitter and intermediate spaces is displayed as well as that of the intermediate and receptor spaces.

Materials list

In the “Analysis” tab of AcoubatBIM by CYPE, an option has been added that generates a new document that relates the types of elements defined in the library of the program to those in the Acoubat database. For each separator, the product used as the base element is shown, as well as the products of the claddings of the construction solution, if their use has been indicated. The total area occupied by the separation elements and the amounts of each type of door, window, skylight, etc. that have been placed are indicated.

Export results in “xls” format

As of the 2018.f version, AcoubatBIM by CYPE allows users to export to “xls” format, all the analysis results that are generated in the octave third bands centred in the frequency range of 50 to 5000 Hz. This way, users can open and work with the data obtained by the application in spreadsheet programs.

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