DAY DESIGN PTY LTD - Supawood · DAY DESIGN PTY LTD A.B.N. 73 107 291 494 C O N S U L T I N G A C O U S T I C A L E N G I N E E R S Email: [email protected]

DAY DESIGN PTY LTD A.B.N. 73 107 291 494

C O N S U L T I N G A C O U S T I C A L E N G I N E E R S

• A I R C R A F T , R O A D T R A F F I C A N D T R A I N N O I S E C O N T R O L • A R C H I T E C T U R A L A C O U S T I C S • I N D U S T R I A L N O I S E A N D V I B R A T I O N C O N T R O L

• E N V I R O N M E N T A L N O I S E I M P A C T I N V E S T I G A T I O N A N D C O N T R O L • O C C U P A T I O N A L N O I S E I N V E S T I G A T I O N S • Q U I E T P R O D U C T D E V E L O P M E N T

Suite 17, 808 Forest Road Peakhurst Sydney NSW 2210

Phone: (02) 9584 2639 Fax: (02) 9584 2619 Email: [email protected]

www.daydesign.com.au

MEASUREMENTS OF SOUND ABSORPTION COEFFICIENTS

SUPAWOOD ARCHITECTURAL LINING SYSTEMS

SLOTTED ACOUSTIC PANEL SYSTEM

REPORT NUMBER:

4600 REV A

PREPARED FOR:

Supawood Architectural Lining Systems 18 Bradwardine Road Bathurst NSW 2795 Attention: Mr Colin Beattie Telephone: (02) 6333 8000

DATE ISSUED: 8 October 2013

Report Status Prepared by: Phillip Lu Approved by: Stephen Gauld

Final

Document R\4600-r1 rev a, 22 pages plus attachments

DAY DESIGN PTY LTD MEASUREMENTS OF SOUND ABSORPTION COEFFICIENTS Report 4600 Rev A Page 2

Document: 4600-r1 rev a


8 Oct 13

TABLE OF CONTENTS

1.0 INTRODUCTION ....................................................................................................3

2.0 SOUND SURVEY INSTRUMENTATION ..........................................................3

3.0 ACOUSTIC TEST LABORATORY .....................................................................4

4.0 MEASUREMENT PROCEDURE ..........................................................................5 4.1 Sound Absorption Coefficients (αs) ....................................................................................... 6 4.2 Practical Sound Absorption Coefficients (αp) ........................................................................ 6 4.3 Weighted Sound Absorption Coefficient (αw) ....................................................................... 6 4.4 Shape Indicators ..................................................................................................................... 7 4.5 Noise Reduction Coefficient (NRC) ....................................................................................... 7

5.0 TEST SPECIMEN DESCRIPTIONS AND RESULTS ......................................8




8 Oct 13

1.0 INTRODUCTION

Day Design was commissioned by Supawood Architectural Lining Systems to measure the sound absorption coefficients for a range of their slotted timber panels.

The tests were conducted in a reverberation chamber at the National Acoustic Laboratories in accordance with Australian Standard AS ISO 354-2006: “Acoustics – Measurement of sound absorption in a reverberation room”.

The measurement results were rated in accordance with AS ISO 11654-2002” “Acoustics – Rating of Sound Absorption – Materials and Systems”.

2.0 SOUND SURVEY INSTRUMENTATION

Noise level measurements and analysis were made with instrumentation as follows in Table 2.1:

Table 2.1 Instrumentation

Description Serial No.

Brüel and Kjær Two Channel Pulse Analyser (assembly 2825, 7521, 2 x 3015)

Brüel and Kjær Cathode Follower type 2660

Brüel and Kjær Microphone type 4179

Brüel and Kjær Sound Level Calibrator type 4231

Yamaha Professional Sound Sources type S500 (2x units)

Murray 100 Watt Amplifier type MA534

Vaisala Digital Barometer type PTB201AD

Testo Temperature/Humidity Logger, type 177-H1

2005502

1338051

2245154

2095415

1068 & 1069

15

R3330001

00886924

All acoustic instrument systems have been laboratory calibrated using instrumentation traceable to Australian National Standards and certified within the last two years thus conforming to Australian Standards. The acoustic measurement system was also calibrated prior to and after the noise level measurements.




8 Oct 13

3.0 ACOUSTIC TEST LABORATORY

Location: National Acoustic Laboratories

126 Greville Street, Chatswood, NSW.

Room Construction: The Receiving Reverberation Room was used for the acoustical measurements with the dividing steel doors closed. The room is of concrete and masonry construction having an internal volume of 202 cubic metres. The floor is pentagonally shaped and the ceiling is inclined so that no two surfaces are parallel. The room is vibration and sound isolated from the enclosing building, being floated on steel springs and rubber dampers below the concrete floor.

Large panels of 19 mm thick plywood, heavily coated with an epoxy resin are suspended inside the test room in random orientation to aid in the diffusion of the sound field.

Room Surface Area: 231 m2

Atmospheric Conditions:

The relative humidity inside the reverberation room throughout testing was approximately 55%. The temperature was 21oC.

Test Specimens: - 12 mm Parallel-slotted MDF panels with acoustic backing.

- 12 mm V-slotted MDF panels with acoustic backing.

- Tested with various air-spaces behind.

Date of Tests: Thursday 14th April, 2011




8 Oct 13

4.0 MEASUREMENT PROCEDURE

Before testing commenced, the reverberation room temperature, relative humidity and barometric air pressure were noted (refer attached spreadsheet). The measurement microphone was acoustically calibrated and the acoustical noise floor of the room checked.

AS ISO 354-2006 requires the area of plane absorber test specimens to be between 10 m2 to 12 m2.

All reverberation rooms have small space variations of the sound field distribution and time variations in sound field decay (of reverberation time) during the measurement period. The gathering of meaningful results therefore requires multiple measurements to determine the extent of these variations. The testing procedure uses 48 sets of data to determine the spread of results around the estimate of the mean, each set containing eighteen measurements of one-third-octave reverberation times (refer attached spreadsheet).

Sound levels generated in the reverberation room for this test were at least 48 dB above the combined background noise level in the reverberation room and the recording equipment electrical noise level for each one-third-octave band. Thus these tests provide a minimum 33 dB evaluation range for measurement of sound decay starting from 5 dB below the initial sound pressure level and with a margin of at least 10 dB between the background noise level and the lowest level of measurement. Item 7.4.1 of AS ISO 354-2006 requires a minimum evaluation range of 20 dB.

The suite of data is divided into two sets of 24 measurements; the first set for the empty reverberation room; and the second set for the reverberation room with the test specimen. The difference between the two measurement data sets is used to determine the absorption characteristics of the test specimen.

These 24 sets of data for each of the two measurement suites consists of a spatial average of six different combinations of two loudspeakers and three microphone positions, and four measurements taken at each combination for a time average to obtain an estimate of the reverberation time precision.

At all times care was taken to ensure that the microphone was separated by at least one metre from the test specimen and room surfaces or diffusers and at least two metres from a sound source as required by AS ISO 354-2006.

This space-time measurement data was computer processed on a pre-configured Excel spreadsheet to obtain a final average and standard deviation for the test specimen results. The calculations provide sound absorption coefficients and precision level of the measurements to a 95% confidence level.

The complete measurement data, calculated sound absorption coefficients and the precision of each coefficient to the 95% confidence level is shown on the attached spreadsheets and is tabulated throughout this report.




8 Oct 13

Note: The first measurement of empty room reverberation time can be used for measurements involving more than one test specimen since the temperature and humidity are stable over long periods of time in all of the test facility measurement rooms. However, re-measurement of the empty room reverberation time is always undertaken if the data is suspect or multiple samples are to be evaluated over a long period of time.

4.1 Sound Absorption Coefficients (αs)

The sound absorption coefficient (αs) in one-third-octave bands (centre frequencies of 100 to 500 Hz inclusive) is the ratio of the equivalent sound absorption area of a test specimen divided by the area of the test specimen. It should be noted that a sound absorption coefficient evaluated from reverberation time measurements can have values larger than 1.00 due to edge effects. Sound absorption coefficient results were rounded to the nearest 0.01 as required by AS ISO 354-2006, item 8.3.

4.2 Practical Sound Absorption Coefficients (αp)

The practical sound absorption coefficient (αp) is given in octave bands (centre frequencies of 125 to 4000 Hz inclusive) based on the arithmetic mean value of the three corresponding one-third-octave sound absorption coefficients, with the mean value calculated to the second decimal, rounded in steps of 0.05.

4.3 Weighted Sound Absorption Coefficient (αw)

The weighted sound absorption coefficient (αw) is calculated from the practical sound absorption coefficients (αp) using the reference curve as shown in Table 1 below. The reference curve is shifted in steps of 0.05 towards the measured αp value, until the sum of the unfavourable deviations is less than 0.10. An unfavourable deviation occurs at a particular frequency when the measured value is less than the value of the reference curve. The weighted sound absorption coefficient αw is defined as the value of the shifted reference curve at 500 Hz.

Table 1 Reference curve for evaluation of weighted sound absorption coefficient, αw

Frequency (Hz) 250 500 1000 2000 4000

Value 0.80 1.00 1.00 1.00 0.90

The single number rating, αw, obtained by the method of this standard does not convey enough information when products are to be used in environments requiring specialist acoustical design. In such cases, complete sound absorption data, αs, as a function of frequency are needed.




8 Oct 13

4.4 Shape Indicators

Whenever αp exceeds the value of the shifted reference curve by 0.25 or more, one or more shape indicators are added in parentheses, to the single number αw rating. If the excess absorption occurs at 250 Hz, “(L)” notation is used. If the excess absorption occurs at 500 Hz or 1000 Hz, “(M)” notation is used. If the excess absorption occurs at 2000 Hz or 4000 Hz, “(H)” notation is used. A “shape indicator” means the sound absorption coefficient at one or more frequencies is considerably higher than the values of the shifted reference curve and therefore, the complete sound absorption coefficient curve should be examined.

4.5 Noise Reduction Coefficient (NRC)

The noise reduction coefficient (NRC) is a commonly used descriptor determined by arithmetically averaging the sound absorption coefficients measured in octave bands centred on 250 – 2000 Hz inclusive, as defined in the American Standard ASTM C 423–89: “Standard test method for sound absorption and sound absorption coefficients by the reverberation room method”. The calculated NRC is rounded to the nearest 0.05.

The NRC is not defined by Australian Standards. However, we have included the NRC rating in this report, for comparison with other test data.




8 Oct 13

5.0 TEST SPECIMEN DESCRIPTIONS AND RESULTS

Each test specimen comprised of six or eight 1.19 m x 1.19 m panels. Two types of panels (Parallel-slotted and V-slotted) were combined with the following mountings:

• NCK LOW, Type E-25 (eight panels)

• NCK MEDIUM, Type E-55 (eight panels)

• NCK HIGH, Type E-100 (eight panels)

• NCK SAWTOOTH, Type E-60 to 200(eight panels)

All tested with and without insulation and,

• NCK FLOAT, Type G-400 (six panels)

Tested with insulation.

Type E Mounting denotes that the test specimen was installed with an air-space behind it. The size of the air-space is indicated by the number (to the nearest 5 mm) following the mounting type descriptor e.g. Type E-25.

Where a Sawtooth frame was used, the mounting type is rated as Type E-60 to 200 where the minimum air-space is 60 mm and the maximum air-space is 200 mm as shown in the figure below.

Type G Mounting denotes that the test specimen is hung parallel to the room surface. The distance from the face of the test specimen to the room surface is indicated by the number (multiple of 50 mm) following the mounting type descriptor e.g. Type G-400.

In this instance panels were raised from the floor by 415 mm to simulate them hanging from a soffit. The edges were not closed in to allow sound absorption around the edges of each panel.

The NRC and αw rating of the test specimens are presented in Tables 5.1 – 5.10 below.




8 Oct 13

Table 5.1 NCK LOW – Type E-25 Mounting

Test Specimen Panel

Noise Reduction Coefficient

(NRC)

Weighted Sound

Absorption Coefficient (αw)

NCK LOW Parallel-slotted

25 mm air-space No insulation

0.45 0.45

NCK LOW V-slotted

25 mm air-space No Insulation

0.40 0.30 (MH)


25 mm air-space VHP25 Insulation

0.55 0.60




8 Oct 13

NCK LOW V-slotted


0.75 0.75




8 Oct 13

Table 5.2 NCK LOW - Measured Sound Absorption Coefficients

1/3 Octave Band

Centre Frequency

(Hz)

Sound Absorption Coefficients



NCK LOW V-slotted

25 mm air-space No Insulation



NCK LOW V-slotted


100 0.04 0.04 0.12 0.08 125 0.08 0.08 0.17 0.12

160 0.15 0.11 0.39 0.28

200 0.17 0.11 0.44 0.33 250 0.20 0.13 0.53 0.44

315 0.30 0.18 0.58 0.63

400 0.33 0.18 0.57 0.75 500 0.41 0.22 0.61 0.79

630 0.47 0.26 0.58 0.83

800 0.51 0.49 0.57 0.87 1000 0.55 0.67 0.60 0.87

1250 0.60 0.72 0.58 0.88

1600 0.64 0.71 0.57 0.86 2000 0.65 0.70 0.59 0.83

2500 0.56 0.62 0.56 0.84

3150 0.48 0.57 0.56 0.78 4000 0.49 0.49 0.61 0.65

5000 0.60 0.59 0.71 0.63

NRC 0.45 0.40 0.55 0.75

αw 0.45 0.30 (MH) 0.60 0.75




8 Oct 13

Table 5.3 NCK MEDIUM - Type E-55 Mounting

Test Specimen Panel


(NRC)

Weighted Sound Absorption

Coefficient (αw)

NCK MEDIUM Parallel-slotted


0.55 0.60

NCK MEDIUM V-slotted


0.50 0.55

NCK MEDIUMI Parallel-slotted

55 mm air-space HP50 Insulation

0.65 0.65




8 Oct 13



0.75 0.75




8 Oct 13

Table 5.4 NCK MEDIUM - Measured Sound Absorption Coefficients

1/3 Octave Band

Centre Frequency

(Hz)



55 mm air-spaceNo insulation


55 mm air-spaceNo insulation




55 mm air-spaceHP50 Insulation

100 0.18 0.14 0.37 0.25 125 0.20 0.12 0.36 0.24

160 0.34 0.27 0.59 0.49

200 0.38 0.26 0.61 0.53 250 0.46 0.31 0.63 0.62

315 0.55 0.40 0.70 0.74

400 0.52 0.42 0.67 0.84 500 0.61 0.47 0.69 0.95

630 0.64 0.56 0.69 0.98

800 0.66 0.63 0.69 0.86 1000 0.65 0.70 0.67 0.78

1250 0.66 0.69 0.64 0.74

1600 0.60 0.64 0.61 0.70 2000 0.60 0.57 0.59 0.63

2500 0.45 0.50 0.49 0.61

3150 0.41 0.53 0.47 0.65 4000 0.47 0.51 0.51 0.61

5000 0.61 0.55 0.64 0.63

NRC 0.55 0.50 0.65 0.75

αw 0.60 0.55 0.65 0.75




8 Oct 13

Table 5.5 NCK HIGH - Type E-100 Mounting

Test Specimen Panel


(NRC)

Weighted Sound


NCK HIGH Parallel-slotted


0.60 0.60

NCK HIGH V-slotted


0.60 0.60



0.65 0.65

NCK HIGH V-slotted


0.75 0.70 (L)




8 Oct 13

Table 5.6 NCK HIGH - Measured Sound Absorption Coefficients

1/3 Octave Band

Centre Frequency

(Hz)




NCK HIGH V-slotted




NCK HIGH V-slotted


100 0.47 0.29 0.54 0.38

125 0.41 0.26 0.47 0.35

160 0.59 0.47 0.72 0.59

200 0.61 0.51 0.66 0.68

250 0.63 0.60 0.67 0.79

315 0.62 0.68 0.69 0.87

400 0.64 0.64 0.67 0.93

500 0.70 0.70 0.69 0.96

630 0.67 0.58 0.70 0.87

800 0.63 0.57 0.66 0.69

1000 0.62 0.59 0.64 0.65

1250 0.61 0.57 0.61 0.62

1600 0.53 0.50 0.55 0.63

2000 0.50 0.47 0.54 0.65

2500 0.48 0.55 0.50 0.67

3150 0.43 0.57 0.47 0.66

4000 0.49 0.51 0.54 0.62

5000 0.62 0.59 0.67 0.63

NRC 0.60 0.60 0.65 0.75

αw 0.60 0.60 0.65 0.70 (L)




8 Oct 13

Table 5.7 NCK SAWTOOTH – Type E-60 to 200

Test Specimen Panel


(NRC)

Weighted Sound


NCK Parallel-slotted SAWTOOTH No Insulation

0.60 0.60

NCK V-slotted

SAWTOOTH No Insulation

0.60 0.60 (L)

NCK Parallel-slotted SAWTOOTH

HP50 Insulation

0.65 0.60 (L)




8 Oct 13

NCK V-slotted

SAWTOOTH HP50 Insulation

0.75 0.70 (L)




8 Oct 13

Table 5.8 NCK SAWTOOTH Measured Sound Absorption Coefficients

1/3 Octave Band Centre Frequency

(Hz)


NCK Parallel-slotted SAWTOOTH No Insulation

NCK V-slotted

SAWTOOTH No Insulation

NCK Parallel-slotted SAWTOOTH

HP50 Insulation

NCK V-slotted

SAWTOOTH HP50 Insulation

100 0.47 0.36 0.51 0.50125 0.50 0.42 0.48 0.51160 0.60 0.57 0.67 0.75200 0.53 0.56 0.58 0.80250 0.62 0.64 0.65 0.85315 0.62 0.70 0.69 0.96400 0.65 0.71 0.71 1.01500 0.63 0.72 0.70 0.95630 0.64 0.55 0.64 0.76800 0.65 0.54 0.65 0.64

1000 0.60 0.55 0.60 0.631250 0.60 0.57 0.59 0.651600 0.53 0.57 0.56 0.672000 0.53 0.56 0.59 0.672500 0.50 0.57 0.53 0.693150 0.48 0.61 0.54 0.704000 0.53 0.59 0.57 0.665000 0.69 0.65 0.71 0.70

NRC 0.60 0.60 0.65 0.75

αw 0.60 0.60 (L) 0.60 (L) 0.70 (L)




8 Oct 13

Table 5.9 NCK FLOAT – Type G-400

Test Specimen Description


(NRC)

Sound Absorption Coefficient

(αw)

NCK FLOAT* (430 BFCL)

Parallel-slotted 415 mm air-space HP50 Insulation

Separated by 340 mm

0.80 0.85

NCK FLOAT* (430 BFCL)

V-slotted 415 mm air-space HP50 Insulation

Separated by 340 mm

0.80 0.85

* Simulates floating panels that are suspended from a ceiling. Panels were tested in a 11.6 m2 area with six panels contributing 8.5m2 and the floor 3.1 m2. Panels were separated with a gap of 340 mm. The αw and NRC of the panels were calculated with the specimen surface area of 11.6 m2.




8 Oct 13

Table 5.10 NCK FLOAT Measured Sound Absorption Coefficients

1/3 Octave Band Centre Frequency

(Hz)


NCK FLOAT* (430 BFCL) Parallel-slotted 415 mm air-gap HP50 Insulation

Separated by 340 mm

NCK FLOAT* (430 BFCL) V-slotted

415 mm air-gap HP50 Insulation

Separated by 340 mm

100 0.23 0.23 125 0.34 0.31

160 0.58 0.55

200 0.60 0.71 250 0.72 0.80

315 0.76 0.85

400 0.76 0.77 500 0.79 0.72

630 0.81 0.80

800 0.82 0.81 1000 0.86 0.86

1250 0.83 0.88

1600 0.83 0.84 2000 0.79 0.87

2500 0.75 0.83

3150 0.71 0.86 4000 0.79 0.86

5000 0.92 0.90

NRC 0.80 0.80

αw 0.85 0.85

* Simulates floating panels that are suspended from a ceiling. Panels were tested in a 11.6 m2 area with six panels contributing 8.5m2 and the floor 3.1 m2. Panels were separated with a gap of 340 mm. The αw and NRC of the panels were calculated with the specimen surface area of 11.6 m2.




8 Oct 13

Sound absorption coefficients (rounded to the nearest 0.01) are tabulated for each one-third-octave band tested and presented in the Tables above. Formulae used in deriving results are presented in the attached Appendix A.

Reverberation times at one-third octave centre frequencies 100 to 5000 Hz were measured and sound absorption coefficients calculated by the methods and procedures of AS ISO 11654-2002: “Acoustics – Rating of Sound Absorption – Materials and Systems”.

Test measurements and calculations were conducted by the undersigned.

Phillip Lu, BSc (Physics)

Acoustical Scientist for and on behalf of Day Design Pty Ltd.

AAAC MEMBERSHIP

Day Design Pty Ltd is a member company of the Association of Australian Acoustical Consultants, and the work herein reported has been performed in accordance with the terms of membership.

Attachments:

• Appendix A: Method of Calculation of Sound Absorption Coefficients

• Test Certificates 4600A – 4600R – Slotted Panels

Manufacturer: Test Specimen:

Supawood Architectural Lining Systems NCK LOW18 Bradwardine Road, Bathurst, NSW, 2795 25 mm air-space

Parallel - Slotted

ααααs ααααp Australian Standards: 0.04 Measured according to AS ISO 354-20060.08 0.10 Rated according to AS ISO 11654-20020.150.17 Specimen Area:0.20 0.20 11.3 m2 (4.76 m x 2.38 m)0.300.33 Mounting:0.41 0.40 Type E-250.470.51 Test Location:0.55 0.55 Twin Reverberation Rooms0.60 National Acoustic Laboratories0.64 126 Greville Street, Chatswood NSW0.65 0.600.56 Instrumentation:0.48 - Brüel and Kjær Two Channel Pulse Analyser 0.48 0.50 (assembly 2825, 7521, 2 x 3015)

16002000

630800

100

10001250

25003150

Test 4600A


4000

Frequency - Hz

160200250315

D A Y D A Y D A Y D A Y

D E S I G N D E S I G N D E S I G N D E S I G N

125

400500

SOUND ABSORPTIONTEST CERTIFICATE

0.48 0.50 (assembly 2825, 7521, 2 x 3015)

0.60 - Brüel and Kjær Cathode Follower type 2660

- Brüel and Kjær Microphone type 4179

- Brüel and Kjær Sound Level Calibrator type 4231- Yamaha Professional Sound Sources type S500

..................................................................Date of Test: Test Officer: Phillip Lu, BSc (Physics)

Project Number: 4600A For and on behalf of Day Design Pty LtdThursday, 14 April 2011

Noise Reduction Coefficient, NRC 0.45

Weighted Sound Absorption Coefficient, ααααw 0.45

50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz

Sound Absorption Coefficients Reference Curve



V - Slotted

ααααs ααααp Australian Standards:

0.04 Measured according to AS ISO 354-2006

0.08 0.10 Rated according to AS ISO 11654-20020.110.11 Specimen Area:

0.13 0.15 11.3 m2 (4.76 m x 2.38 m)0.180.18 Mounting:

0.22 0.20 Type E-25

0.260.49 Test Location:

0.67 0.65 Twin Reverberation Rooms0.72 National Acoustic Laboratories

0.71 126 Greville Street, Chatswood NSW

0.70 0.700.62 Instrumentation:

0.57 - Brüel and Kjær Two Channel Pulse Analyser

0.49 0.55 (assembly 2825, 7521, 2 x 3015)

630800

16002000

10001250

25003150

Test 4600B


4000

Frequency - Hz


200250315



100

160125

400500

0.49 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600B For and on behalf of Day Design Pty Ltd


Weighted Sound Absorption Coefficient, ααααw 0.30 (MH)

Thursday, 14 April 2011

50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz




Parallel - SlottedVHP25 Insulation


Test 4600C


4000

Frequency - Hz

160200250315



125

400500


100

16002000

630800

10001250

25003150

0.61 0.65 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600C For and on behalf of Day Design Pty Ltd

4000




5000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz




V - SlottedVHP25 Insulation




0.44 0.45 11.3 m2 (4.76 m x 2.38 m)0.630.75 Mounting:

0.79 0.80 Type E-25






0.65 0.70 (assembly 2825, 7521, 2 x 3015)

630800

16002000

10001250

25003150

Test 4600D


4000

Frequency - Hz


200250315



100

160125

400500

0.65 0.70 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600D For and on behalf of Day Design Pty Ltd




50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz



Supawood Architectural Lining Systems NCK MEDIUM18 Bradwardine Road, Bathurst, NSW, 2795 55 mm air-space

Parallel - Slotted


630800

16002000

10001250

25003150

Test 4600E



4000

Frequency - Hz

200250315



100

160125

400500

0.47 0.50 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600E For and on behalf of Day Design Pty Ltd




50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz




V - Slotted




0.31 0.30 11.3 m2 (4.76 m x 2.38 m)0.400.42 Mounting:

0.47 0.50 Type E-55






0.51 0.55 (assembly 2825, 7521, 2 x 3015)

Test 4600F



4000

Frequency - Hz

200250315



125

400500

100

160

16002000

630800

10001250

25003150

0.51 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600F For and on behalf of Day Design Pty Ltd

4000




5000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz




Parallel - SlottedHP50 Insulation


16002000

630800

10001250

25003150

Test 4600G



4000

Frequency - Hz

200250315



125

400500

100

160

0.51 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600G For and on behalf of Day Design Pty LtdThursday, 14 April 2011



50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz




V - SlottedHP50 Insulation


Test 4600H



4000

Frequency - Hz

200250315



125

400500

100

160

16002000

630800

10001250

25003150

0.61 0.65 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600H For and on behalf of Day Design Pty Ltd

4000




5000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz






Test 4600H



4000

Frequency - Hz

200250315



125

400500

100

160

16002000

630800

10001250

25003150

0.61 0.65 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600H For and on behalf of Day Design Pty Ltd

4000




5000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz



Supawood Architectural Lining Systems NCK HIGH18 Bradwardine Road, Bathurst, NSW, 2795 98 mm air-space

Parallel - Slotted


Test 4600I

Sound Absorption CoefficientsFrequency - Hz




100

160

10001250

2500

125

400500

200250315

16002000

630800

40003150

0.49 0.50 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600I For and on behalf of Day Design Pty LtdThursday, 14 April 2011

40005000



0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz




V - Slotted




0.60 0.60 11.3 m2 (4.76 m x 2.38 m)0.680.64 Mounting:

0.70 0.65 Type E-100






0.51 0.55 (assembly 2825, 7521, 2 x 3015)

630800

16002000

10001250

25003150

Test 4600J



4000

Frequency - Hz

200250315



100

160125

400500

0.51 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600J For and on behalf of Day Design Pty Ltd




50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz








0.67 0.65 11.3 m2 (4.76 m x 2.38 m)0.690.67 Mounting:

0.69 0.70 Type E-100






0.54 0.55 (assembly 2825, 7521, 2 x 3015)

Test 4600K



4000

Frequency - Hz

200250315



100

160125

400500

16002000

10001250

25003150

630800

0.54 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600K For and on behalf of Day Design Pty Ltd

4000


5000



0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz








0.67 0.65 11.3 m2 (4.76 m x 2.38 m)0.690.67 Mounting:

0.69 0.70 Type E-100






0.54 0.55 (assembly 2825, 7521, 2 x 3015)

Test 4600K



4000

Frequency - Hz

200250315



100

160125

400500

16002000

10001250

25003150

630800

0.54 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600K For and on behalf of Day Design Pty Ltd

4000


5000



0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

So

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Frequency - Hz








0.79 0.80 11.3 m2 (4.76 m x 2.38 m)0.870.93 Mounting:

0.96 0.90 Type E-100






0.62 0.65 (assembly 2825, 7521, 2 x 3015)

Test 4600L



4000

Frequency - Hz

200250315



100

160125

400500

16002000

10001250

25003150

630800

0.62 0.65 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600L For and on behalf of Day Design Pty Ltd

4000


5000


Weighted Sound Absorption Coefficient, ααααw 0.70 (L)

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz



Supawood Architectural Lining Systems NCK SAWTOOTH18 Bradwardine Road, Bathurst, NSW, 2795 60 mm to 200 mm air-space

Parallel - Slotted




0.62 0.60 11.3 m2 (4.76 m x 2.38 m)0.620.65 Mounting:

0.63 0.65 Type E-60 to 200






0.53 0.55 (assembly 2825, 7521, 2 x 3015)

630800

16002000

10001250

25003150

Test 4600M


4000

Frequency - Hz


200250315



100

160125

400500

0.53 0.55 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600M For and on behalf of Day Design Pty Ltd




50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz




V - Slotted

αs αp Australian Standards: 0.36 Measured according to AS ISO 354-20060.42 0.45 Rated according to AS ISO 11654-20020.570.56 Specimen Area:0.64 0.65 11.3 m2 (4.76 m x 2.38 m)0.700.71 Mounting:0.72 0.65 Type E-60 to 2000.550.54 Test Location:0.55 0.55 Twin Reverberation Rooms0.57 National Acoustic Laboratories0.57 126 Greville Street, Chatswood NSW0.56 0.550.57 Instrumentation:0.61 - Brüel and Kjær Two Channel Pulse Analyser 0 59 0 60 ( bl 2825 7521 2 3015)

630800

16002000

10001250

25003150

Test 4600N


4000

Frequency - Hz

200250315


D A Y D E S I G N

100

160125

400500

0.59 0.60 (assembly 2825, 7521, 2 x 3015)

0.65 - Brüel and Kjær Cathode Follower type 2660- Brüel and Kjær Microphone type 4179- Brüel and Kjær Sound Level Calibrator type 4231- Yamaha Professional Sound Sources type S500


Project Number: 4600N For and on behalf of Day Design Pty Ltd


Weighted Sound Absorption Coefficient, αw 0.60 (L)


50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

Soun

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sorp

tion

Coe

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Frequency - Hz




Parallel-SlottedHP50 Insulation

αs αp Australian Standards: 0.51 Measured according to AS ISO 354-20060.48 0.55 Rated according to AS ISO 11654-20020.670.58 Specimen Area:0.65 0.65 11.3 m2 (4.76 m x 2.38 m)0.690.71 Mounting:0.70 0.70 Type E-60 to 2000.640.65 Test Location:0.60 0.60 Twin Reverberation Rooms0.59 National Acoustic Laboratories0.56 126 Greville Street, Chatswood NSW0.59 0.550.53 Instrumentation:0.54 - Brüel and Kjær Two Channel Pulse Analyser 0 57 0 60 ( bl 2825 7521 2 3015)

630800

16002000

10001250

25003150

Test 4600O


4000

Frequency - Hz


200250315

D A Y D E S I G N

100

160125

400500

0.57 0.60 (assembly 2825, 7521, 2 x 3015)

0.71 - Brüel and Kjær Cathode Follower type 2660- Brüel and Kjær Microphone type 4179- Brüel and Kjær Sound Level Calibrator type 4231- Yamaha Professional Sound Sources type S500


Project Number: 4600O For and on behalf of Day Design Pty Ltd


Weighted Sound Absorption Coefficient, αw 0.60 (L)


50004000

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

Soun

d Ab

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tion

Coe

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ent

Frequency - Hz







0.85 0.85 11.3 m2 (4.76 m x 2.38 m)0.961.01 Mounting:

0.95 0.90 Type E-60 to 200






0.66 0.70 (assembly 2825, 7521, 2 x 3015)

Test 4600P


4000

Frequency - Hz


200250315



125

400500

100

160

16002000

630800

10001250

25003150

0.66 0.70 (assembly 2825, 7521, 2 x 3015)





Project Number: 4600P For and on behalf of Day Design Pty Ltd

4000


Weighted Sound Absorption Coefficient, ααααw 0.70 (L)


5000

0.00

0.20

0.40

0.60

0.80

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz



Supawood Architectural Lining Systems NCK Float18 Bradwardine Road, Bathurst, NSW, 2795 415 mm air-space


ααααs ααααp Australian Standards: 0.23 Measured according to AS ISO 354-20060.34 0.40 Rated according to AS ISO 11654-20020.580.60 Specimen Area:0.72 0.70 Panel Test Area 8.5 m2 + Floor 3.1 m2

0.76 Total Test Area 11.6 m2

0.760.79 0.80 Mounting:0.81 Type G - 400

0.820.86 0.85 Test Location:0.83 Twin Reverberation Rooms0.83 National Acoustic Laboratories

0.79 0.80 126 Greville Street, Chatswood NSW

0.750.71 Instrumentation:


10001250

2500



16002000

630800

125100

Frequency - Hz

Test 4600Q


250

160200

315

3150

400500

0.71 Instrumentation:0.79 0.80 - Brüel and Kjær Two Channel Pulse Analyser

0.92 (assembly 2825, 7521, 2 x 3015)

- Brüel and Kjær Cathode Follower type 2660



..................................................................Date of Test: Test Officer Phillip Lu, BSc (Physics)

4000



5000


3150

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz


Project Number: 4600Q For and on behalf of Day Design Pty Ltd


Supawood Architectural Lining Systems NCK Float18 Bradwardine Road, Bathurst, NSW, 2795 415 mm air-space


ααααs ααααp Australian Standards: 0.23 Measured according to AS ISO 354-20060.31 0.35 Rated according to AS ISO 11654-20020.550.71 Specimen Area:0.80 0.80 Panel Test Area 8.5 m2 + Floor 3.1 m2

0.85 Total Test Area 11.6 m2

0.770.72 0.75 Mounting:0.80 Type G - 4000.810.86 0.85 Test Location:0.88 Twin Reverberation Rooms0.84 National Acoustic Laboratories0.87 0.85 126 Greville Street, Chatswood NSW0.830.86 Instrumentation:


250

160200

315400500

10001250

2500

Test 4600RSOUND ABSORPTION

TEST CERTIFICATE D A Y D A Y D A Y D A Y


16002000

630800

125100

Frequency - Hz

3150 0.86 Instrumentation:0.86 0.85 - Brüel and Kjær Two Channel Pulse Analyser 0.90 (assembly 2825, 7521, 2 x 3015)

- Brüel and Kjær Cathode Follower type 2660




5000




40003150

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

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Frequency - Hz


Date of Test: Test Officer: Phillip Lu, BSc (Physics)Project Number: 4600R For and on behalf of Day Design Pty Ltd

D A Y D E S I G N

METHOD OF CALCULATION OF SOUND ABSORPTION COEFFICIENTS

APPENDIX A4600

The absorption coefficient is calculated from the change in reverberation time between the empty room and the room with the test specimen. Calculations have been carried out in accordance with the Australian Standard AS ISO 354-2006: “Acoustics – Measurement of sound absorption in a reverberation room” in conjunction with Australian Standard AS ISO 11654-2002: -“Acoustics Rating of sound absorption – Materials and systems”, as outlined below: The equivalent sound absorption area, AT of the test specimen, in square metres, is calculated using the following formula:

TA = 12 AA −

= )(4113.55 211122

mmVTcTc

V −×−⎟⎟⎠

⎞⎜⎜⎝

⎛−×

Where = Equivalent sound absorption area of only the test specimen (m2) TA

1A = The equivalent sound absorption area of the empty reverberation Room (m2)

= The equivalent sound absorption area of the reverberation room including the test specimen (m2)

2A

V = Room volume (m3)

= propagation of sound in air at temperature T1 ie. C1 = (331 + 0.6 × T1) in (m/sec) for temperatures in the range of 15 oC to 30 oC

1C

= propagation of sound in air at temperature T2 ie. C2 = (331 + 0.6 × T2) in (m/sec) for temperatures in the range of 15 oC to 30 oC

2C

21, mm = The power attenuation coefficient, in reciprocal metres calculated according to ISO 9613-1 using climatic conditions that have been present in the empty reverberation room and the reverberation room with the test specimen respectively, during the measurement. The value of m can be calculated from the attenuation coefficient, α (not the absorption coefficient) which is used according to the formula:

10Log(e)

α=m

The sound absorption coefficient of the test specimen, αs, in square metres, is calculated using the following formula:

SAT

s =α

Where sα = The sound absorption coefficient

TA = Equivalent sound absorption area of only the test specimen (m2)

= the area, in square metres, covered by the test specimen S

Documents

DAY DESIGN PTY LTD - Supawood · DAY DESIGN PTY LTD A.B.N. 73 107 291 494 C O N S U L T I N G A C O U S T I C A L E N G I N E E R S Email: [email protected]