ESSAY REPORTACOUSTIC IN LABORATORY

Industrialdea Zona A. Pab 35. Asteasu E-20159, Gipuzkoa

Cerramie horizontal point: Forged fromreference light + the ceiling discontinuedconsisting of: Ceiling bracket "Akustik Super T47 + Sylomer® 30 Type B" + double 12.5 mm thick laminated gypsum board, with 280 mm plenum with two layers of 45 mm thick mineral wool inside

Ref: CAM21010001-4 / AER

Date of issue:July 6, 2021

Ref .: CAM 21010001-4 / AERPage: 1/17

ESSAY REPORTReport of test

TEST LOCATION AUDIOTEC STANDARD TEST CHAMBERS. C / JUANELO TURRIANO, 4. BOECILLO TECHNOLOGICAL PARK. BOECILLO. (VALLADOLID) SPAIN

Place of test

TESTTest

Laboratory measurement of airborne noise insulation of a horizontal enclosure composed of:

SHOWSpecimen

Lightweight reference wood slab +Suspended ceiling consisting of: Ceiling support “Akustik Super T47 + Sylomer® 30 Type B” + double 12.5 mm thick laminated gypsum board, with 280 mm plenum with two layers of mineral wool45mm thick inside

TESTING METHOD UNE EN ISO 10140-1: 2016. Annex G UNE EN ISO 10140-2: 2011Method of Test

PETITIONER AMC MecanocauchoCustomer Industrialdea Zona A. Pab 35.

Asteasu E-20159, Gipuzkoa

DATE TEST: March 29, 2021Date of Issue

Made by reviewed byDonate Reviewed

Signed: Marcos Merillas Fernández Signed: Ángel Arenaz GombauLaboratory Technician Laboratory Technical Director

This report is issued in accordance with the conditions of the accreditation granted by ENAC, which has verified the laboratory's measurement capabilities.This report may not be partially reproduced without the written approval of the Laboratory that issues it and ENAC.

This report is issued in accordance with the conditions of accreditation granted by ENAC which has assessed the measurement capability of the Laboratory.This report may not be partially reproduced, except with the prior written permission of the issuing Laboratory and ENAC.

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CONTENTS

1.- Purpose of the report

2.- Test procedure

2.1.- Procedures and Standards used

2.2.- Methodology and test parameters

2.3.- Instrumentation used

2.4.- Identification of the products and description of the sample

2.5.- Sample installation process

2.6.- Characteristics and test conditions

2.7- Photographs of the assembly

3.- Test results

Ref .: CAM21010001-4 / AERPage: 3/17

1.- PURPOSE OF THE REPORTEvaluation in standard test chambers of acoustic insulation to airborne noise,

noise reduction index, R, of the following construction system:

Identification of the construction system: Horizontal system composed of:

Light reference slab type C.1. referred to in annex C of the UNE EN ISO

10140-5: 2011 standard, consisting of: Wood chipboard flooring 22 mm

thick, on wooden beams every 625 mm, 120 x 180 mm in section,

wooden battens perpendicular to the beams, each 625 mm, 24 x 48 mm

in section, 100 mm of mineral wool in the gaps between the beams, and

a 12.5 cm thick plasterboard screwed to the battens. +Suspended

ceiling consisting of: Ceiling bracket "Akustik Super T47 + Sylomer® 30

Type B" + double 12.5 mm thick laminated gypsum board, with 280 mm

plenum with two layers of 45 mm thick mineral wool inside

The test was carried out in the standard AUDIOTEC chambers at the Boecillo

Technology Park (Valladolid).

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2.- TEST PROCEDURE2.1- Procedures and Standards used

The test has been carried out taking into account the following laboratory

standards and procedures:

  UNE-EN ISO 10140-2: 2011. Acoustics. Laboratory measurement of acoustic insulation to airborne noise of building elements.

  Annex E of the Basic Document DB HR Protection Against Noise. April 2009.

  Measurement procedure and calculations set forth in the specific test procedure PE-36 of the AUDIOTEC Acoustics Laboratory.

2.2- Methodology and test parameters

The chambers where the test was carried out comply with the provisions and

requirements established in the UNE EN ISO 10140-5: 2011 Standard. They are

vertically adjacent chambers. One of them, the lower or receiver, is fixed and is

below ground level, and the other, the upper or receiver, is mobile and is placed on

the receiving chamber. Both are shaped like an irregular prism, without parallel

edges. The receiving chamber has 30 cm thick concrete wall walls and interior

acoustic linings with a 15 mm laminated plasterboard lining, with a volume of 52.8

m3, while the walls of the upper chamber are composed of a 15 cm outer sandwich

metal structure. thick reinforced with insulating and acoustic absorbent materials,

and an interior acoustic lining.

For the test, pink noise was generated with 2 source positions in the emitting

chamber (mobile camera), located at least 0.7 meters from the existing enclosures,

and on a tripod at different heights. For each source position, three measurements

were made with a rotary microphone in the diffuse field area of the emitting

chamber. The microphone kept a minimum distance of 0.7 m from the side walls, 1

m from the sound source and 1 m from the sample under test at all times. The

sweep radius of the microphone was one meter and with a minimum inclination of

10º.

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For each source position, three measurements were made with a rotary

microphone in the diffuse field area of the receiving chamber. The microphone

kept a minimum distance of 0.7 m from the side walls and 1 m from the sample

under test at all times. The sweep radius of the microphone was one meter and

with a minimum inclination of 10º.

Subsequently, the background noise in the receiving chamber was measured with the sound

source stopped.

The time of each of the measurements was 48 seconds (3 full sweeps), enough

time for the signal to stabilize, and the measurements were made in each of the

third octave bands between 100 and 5000 Hz.

To measure the reverberation time, 2 source positions were used in the receiving

chamber separated by more than 3 meters. For each source position, 3 microphone

positions were used in the receiving chamber to measure reverberation. All of them

were more than 1 m away. from the side walls, 1.8 m between them and 2 m from the

sound source. Two measurements were taken in each position and the respective

averages were obtained. TR20 was measured.

2.3.- Instrumentation used

The instrumentation used in the test was as follows:

  Brüel & Kjaer noise source type 4292, serial number 004007.

  PULSE analyzer model B&K 3560-B-030 with serial number 2538701.

  PHONIC MAX 860 amplifier with serial number ABA2GBA171.

  BEHRINGER model DEQ2496 thirds octave equalizer.

  B&K 4189 microphone with serial number 2534182 and B&K 2669 preamplifier with

serial number 2532870.

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  B&K 4189 microphone with serial number 2345614 and B&K 2669 preamplifier with

serial number 2532823.

  B&K type 4231 calibrator-verifier, class 1, with serial number 3015136.

  BARIGO thermoanemometer, model no. 525.

2.4.- Identification of the products and description of the sample.

BRAND /MODEL

PROPERTIESPRODUCT DIMENSIONS

ESSENTIALS

LIGHTWEIGHT REFERENCE FLOOR

120 x 180 x 3920 mm (width x height

x length)

Density 450 kg / m3

Beams - -Material Fir tree

Boardagglomerate of

wood

Density 650 kg / m3

- - - -Thickness 22 mm

Mass sup. 2 kg / mtwo

Mineral wool - - - -Thickness 100 mm

Density 408 kg / m324 x 48 mm (height

x width)Lower tracks - -Material Pine tree

Mass sup. 8 kg / mtwo

Plasterboardlaminate - - - -

Thickness 12.5 mm

SUSPENDED CEILING

Akustik SuperT47 + Sylomer®

30 Type B

Loadmaximum

Ceiling brackets - - 30 kg

Profiling (primaryand secondary)

45 x 18 mm F530 - - - -

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BRAND /MODEL

PROPERTIESPRODUCT DIMENSIONS

ESSENTIALS

Mass sup. 2 kg / mtwo

Mineral wool - - - -Thickness 45 mm

Plasterboardlaminate

2500 x 1200 mm(length x WIDTH)

- - Thickness 12.5 mm

Screws andnuts - - - - - - - -

Threaded rod M6 - - - - - - - -

Joint paste - - - - - - - -

Joint tape - - - - - - - -

Watertight band - - - - - - - -

Sample sketch:

Light forging ofreference

2x 45 mm thick mineral wool

Plasterboard12.5 laminatemm thick

Threaded rodM6Profiles F-530

primary and

secondaryAkustik Super Stands

T47 + Sylomer® 30Type B

Plenum 280 mm

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Support sketch:

Photographs of the support:

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2.5.- Sample installation process

First, the lightweight reference slab was installed in the gap above the receiving

chamber. They were installed in two modules of beams + chipboard, which were

subsequently joined with screws already on the hole of the chamber. The beams

were spaced 625 mm off center. Next, the wooden battens were installed in the

lower part, screwing them perpendicular to the beams and at a distance between

axes of 625 mm. Next, the system was filled with 100 mm of mineral wool,

supported on the wooden strips. To finish, a 12.5mm layer of gypsum plasterboard

was bolted to the battens, completely enclosing the reference floor. Finally, all the

joints between plates, and on the perimeter of the plates with the chamber, were

duly taped and sealed with joint paste.

First of all, to begin the execution of the roof, M6 double-threaded lag beams were

screwed to the beams at each of the points where the supports were. An M6

threaded rod was attached to these lag screws by a coupling nut. In each of the

rods a support was installed "Akustik Super T47

+ Sylomer® 30 Type B ”so that they will all be level. The supports are

They installed in 3 rows of 5 supports each, in the central beam and in the side beams,

leaving a space of 80 cm between supports of the same row and 125 cm between rows

of supports.

Once the supports were positioned and leveled, an F-530 primary profile was

installed in each row of supports. Then, F-530 secondary profiles were installed

perpendicular to the primary ones, every 50 cm. Once the profiles were installed,

the plenum was filled with two layers of 45 mm thick mineral wool panel. Next, a

first layer of 12.5 mm thick plasterboard was screwed in so that the space between

this plate and the reference floor was 280 mm. At the meeting of the plates with

the wall of the chamber, a watertight band was installed. All joints between plates

and between the plates and the

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perimeter were sealed with joint paste. Subsequently, a second layer of 12.5 mm

thick laminated plasterboard was screwed on, whose perimeter junction with the

chamber also had a watertight band.

Finally, all the joints between the plates were taped and sealed with joint paste, as

well as the perimeter encounters of the plasterboard with the walls of the chamber.

2.6.- Characteristics and test conditions

The approximate nominal thickness of the system: 54.5 cm (24 cm of the floor + 28

cm plenum + 2.5 cm of the plasterboard). The surface mass of the system is 65.6

kg / mtwo (45.5 kg / mtwo of the slab + 0.8 kg / mtwo of supports + rods + 1.3 kg / mtwo of

the profiles + 2 kg / mtwo of mineral wool + 16 kg / mtwo plasterboard).

The dimensions of the metering opening are 3.3 m wide by 3.675 m long. The

common area between the two chambers is 12.12 mtwo. The approximate total area

of the sample is 14.58 mtwo. The volume of the upper chamber is

58.35 m3 and that of the receiving chamber or lower of 52.83 m3.

The tested sample was installed by operators subcontracted by AUDIOTEC.

Environmental conditions:

Temperature (ºC) RH (%) Atmospheric pressure (mba)

Camera Initial Final Initial Final Initial Final

Station 17.6 17.6 49 491026 1026

Receiver 18.2 18.2 52 52

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2.7.- Photographs of the assembly.

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3.- RESULTS OF THE ACOUSTIC INSULATION TO AERIAL NOISE

Below is a page with a brief description of the tested sample, a table with the

isolation values obtained for each frequency band in dB, as well as its

corresponding graph. It also shows the global insulation value in dB calculated

according to the ISO 717-1: 2013 standard.

Notes:

  The results of this test only concern the objects presented for testing

and at the time and conditions in which the measurements were made.

  The measurement uncertainty is available to the client at the AUDIOTEC

Acoustics Laboratory.

  This report should not be reproduced by any means unless it is done in

its entirety and with the authorization of Laboratorio de Acústica de

AUDIOTEC SA

  The UNE EN ISO 10140-2: 2011 standard replaces the UNE EN ISO 140-3: 1995

standard.

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Client:AMC MecanocauchoTest date: March 29, 2021Sample identification:(1) Double 12.5mm gypsum board(two) Secondary profiles F-530(3) Primary Profiles F-530(4) 45mm double mineral wool panel(5) Plenum 280 mm(6) Threaded rod M-6(7) Medium Akustik Super T47 + Sylomer® 30 TypeB(8) Light reference slab

two 3 4 5 6 7Testing method: UNE-EN ISO 10140-2Thickness: 54.5 cm; Surface mass: 65.6 kg / m2

1 8

80Freq.F

Hz

R

dB 70

60100125160200250315400500630800

10001250160020002500315040005000

35.642.244.1

≥ 49.1≥ 59.0

fifty

40≥ 56.9≥ 56.8≥ 62.0≥ 65.3≥ 68.3≥ 68.3

69.071.069.168.0

≥ 71.9≥ 75.4

30

twenty

10Curve ref.

0 Results

≥ 75.5 Frequency (Hz)

Global insulation calculated according to ISO 717-1: 2013:Rw (C; Ctr) ≥ 63 (-3; -10) dB

Evaluation based on laboratory measurement results obtained using an engineering method

Global isolation in dBA according to DB-HR.R (A) ≥ 60.8 dBA

Made by: Reviewed by:

Signed: Marcos Merillas Signed: Ángel Arenaz

R (d

B)