field impact nsulation ests · instrumentation used in this assessment holds a current calibration...

acoustics Australia Pty Ltd

palmer

24 Mexicanus Drive PO Box 790 Park Ridge Queensland 4125 Australia p. +61 7 3802 2155 [email protected] www.palmeracoustics.com

Principal: Ross H. Palmer CPEng Associate: Bob Thorne PhD

O f f i c e s • B r i s b a n e • B a n g k o k ACN 058 751 349 ABN 48 058 751 349

FIELD IMPACT INSULATION TESTS

21 BROUGHAM STREET, GEELONG

TEST REPORT

Commissioned by: Forbo Flooring Systems Date: 27 November 2017 Project number: 4311 Version: V.0 Author: Rasika Chandrasekara


palmer PN4311 Forbo Flooring systems NSW LNT i

DOCUMENT INFORMATION

Author: Rasika Chandrasekara Date: 27 November 2017

Approved by: Roger Hawkins Date: 27 November 2017

VERSION HISTORY

Version Description Date Author Approved by

V.0 Final 27-11-17 Rasika Chandrasekara Roger Hawkins

V.1

DOCUMENT DISTRIBUTION

Copy Name/Company Hard Copy Electronic Copy

01 Forbo Flooring Systems

02

03

04

05


palmer

FIELD IMPACT INSULATION TESTS 21 BROUGHAM STREET, GEELONG

TEST REPORT

PN4311 Forbo Flooring systems NSW LNT ii

TITLE Field Impact Insulation Tests

U F4.610, 21 Brougham Street Geelong

Test Report TESTS BY Rasika Chandrasekara Acoustic Engineer - Palmer Acoustics (Australia) Pty Ltd

REPORT DATE 27 November 2017

TEST DATE 22 November 2017 TEST LOCATION Level 3 Unit F4.610 Studio room area to Level 2 Unit F3.610 Studio room area FOR Forbo Flooring Systems


palmer


TEST REPORT

PN4311 Forbo Flooring systems NSW LNT iii

CONTENTS

1.0 INTRODUCTION ................................................................................................................................ 1

2.0 EQUIPMENT AND PROCEDURES ................................................................................................. 1

2.1 Instrumentation ..................................................................................................................................... 1 2.2 Measurement Procedures ..................................................................................................................... 1

3.0 DESCRIPTION OF ROOMS .............................................................................................................. 2

4.0 RESULTS ............................................................................................................................................... 2

5.0 DISCUSSION ....................................................................................................................................... 3

APPENDIX A ....................................................................................................................................................... 4

APPENDIX B ....................................................................................................................................................... 6


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TEST REPORT

PN4311 Forbo Flooring systems NSW LNT Page 1 of 6

1.0 INTRODUCTION

Palmer Acoustics were engaged by Forbo flooring systems to perform field impact insulation tests in Unit F4.610 of 21 Brougham Street, Geelong. The tests were conducted on vinyl plank flooring samples installed in the studio room area of Unit F4.610. The measurements were conducted in Unit F3.610 – the unit directly beneath Unit F4.610. The descriptions of the tests as follows:

• Test 1: 200mm Bare concrete slab • Test 2: Forbo Allura flex 5mm Vinyl planks • Test 3: Forbo Allura Flex 5mm vinyl plank + 2mm Acoustic Silence underlay

2.0 EQUIPMENT AND PROCEDURES 2.1 Instrumentation

The following instruments were used in the tests.

• Norsonics 140 Sound level meter (serial number 1403252)

• Look Line tapping machine EM50 (serial number TM.14031)

• B & K 4230 Calibrator (serial number 1638750)

The sound level measuring equipment was field calibrated before and after each measurement session and was found to be within 0.2dB of the reference signal. All instrumentation used in this assessment holds a current calibration certificate from a certified NATA calibration laboratory.

2.2 Measurement Procedures

Testing was conducted in conformance with ISO 16283-2 “Field measurement of impact sound insulation of floors”. The evaluation of the results, to derive the single figure L’nT,w rating, was conducted to ISO 717-2 1996 “Rating of insulation in buildings and of building elements – Part 2 Impact Sound Insulation”. The vinyl flooring samples installed in the studio room area were tapped in two (2) different positions with the receiving space’s sound measurements averaged over a 1-minute period - per test position. Ambient sound levels were measured before the testing with the results included in the assessment as per standard. Receiving room reverberation measurements were performed, utilising RT Software in the Norsonics 140 analyser, at four locations throughout the space, with the results arithmetically averaged.


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TEST REPORT


3.0 DESCRIPTION OF ROOMS

All windows and doors were closed in the source and receiving rooms.

Transmitting Rooms Test Floor: Vinyl plank samples;

Walls: Plasterboard; Enclosure: Windows and all doors were closed;

Room finish: Not furnished. Receiving Rooms Floor: Concrete slab; Ceiling: Bare concrete slab; Walls: Plasterboard; Enclosure: Windows and all doors were closed; Room finish: Not furnished.

4.0 RESULTS

Our tests gave the following results:

Test System L'nT,w

Test 1: 200mm Bare concrete slab 69

Test 2: Forbo Allura flex 5mm Vinyl planks 52

Test 3: Forbo Allura Flex 5mm vinyl plank + 2mm Acoustic Silence underlay 45 Table 1: Test Results Summary – impact tests Test certificates detailing the 1/3 octave band results are provided in Appendix B to this report in terms of L’nT,w, and related spectrum adaptation terms in accordance with ISO 717 - 2: 1996 L’nT,w is a term used in the Building Code of Australia (BCA), see also Appendix A. It should be noted that L’nT,w is a weighted room noise level and that a lower number represents better performance.


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TEST REPORT


5.0 DISCUSSION

The following table shows the vinyl plank and underlay samples’ impact insulation rating reduction from the 200mm bare concrete slab:

Flooring types Δ L’nT,w

Reduction 1. Forbo Allura flex 5mm Vinyl planks 17 2. Forbo Allura Flex 5mm vinyl plank + 2mm Acoustic Silence underlay 24

Author: Reviewed by:

RASIKA CHANDRASEKARA BSc Eng Engineer

ROGER HAWKINS RPEQ 6022 Senior Engineer


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TEST REPORT


APPENDIX A

GLOSSARY

IMPACT MEASUREMENT AND ASSESSMENT DESCRIPTORS

• LAeq,T – Time average A-weighted sound pressure level is the average energy equivalent level of the A Weighted sound over a period "T".

• LAeq – Equivalent Continuous Noise Level. The noise level in dB(A) which if present for the

entire measurement period would produce the same sound energy to be received as was actually received as a result of a signal which varied with time. Normally abbreviated to "Leq" or "LAeq", often followed by a specification of the time period (such as 1 hour or 8 hours) indicating the period of time to which the measured value has been normalized;

• L’nT,w – Weighted Standardised impact sound pressure level; a measurement of impact sound

transmission between rooms. Lower values denote better performance. The single figure measure is derived by adapting a standard response curve to measured 1/3 octave band sound pressure levels. Measured results are adjusted based upon a reverberation time of 0.5 sec in receiving room. Normally derived from a field test.

• L’n,w – Weighted Normalized impact sound pressure level; a laboratory measurement of impact

sound transmission between rooms. Lower values denote better performance. The single figure measure is derived by adapting a standard response curve to measured 1/3 octave band sound pressure level measurements. Measured results are adjusted based on the absorption of 10m2 in the receiving room. Normally derived from a laboratory test.

• CI – A spectrum adaptation term compensating for the effect of floor coverings when applied to

bare floors under test. The usually negative value, in decibels, is added to the single-number quantity, L’nw or L’nTw.

• Field Impact Insulation Class (FIIC) – a single-number rating derived from measured values of

normalized one-third octave band impact sound pressure levels in accordance with Eq 4 and the reference contours in Classification E 989. It provides an estimate of the sound insulating performance of a floor-ceiling assembly and associated support structures under tapping machine excitation.

• Impact Insulation Class (IIC) – This classification covers the determination of a single-figure

rating that can be used for comparing floor-ceiling assemblies for general building design purposes.

• Impact Sound Pressure Level (L) – the average sound pressure level in a specified frequency

band produced in the receiving room by the operation of the standard tapping machine on the floor assembly, averaged over each of the specified machine positions.

• L’nT – Standardised Impact Sound Pressure Level – the impact sound pressure level

standardised to room with a reference reverberation time of 0.5 seconds.

• L’n – Normalized Impact Sound Pressure Level – the impact sound pressure level normalized to reference absorption area of 10 metric sabins (108 sabins).


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TEST REPORT


• Receiving Room – a room below or adjacent to the floor specimen under test in which the impact

sound pressure levels are measured. • Source Room – the room containing the tapping machine. STANDARDS • ISO 140 – 6

Acoustics – Measurement of sound Insulation in buildings and of building elements – Part 6: Laboratory measurements of impact sound insulation of floors

• ISO 140 – 7

Acoustics – Measurement of sound Insulation in buildings and of building elements – Part 7: Field measurements of impact sound insulation of floors

• ISO 717 – 2

Acoustics – Rating of sound insulation in building and of building elements – Part 2: Impact sound insulation

• ASTM Classification E 1007 – 97

Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures

• ASTM Classification E 989 – 89

Standard Classification for Determination of Impact Insulation Class (IIC)


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TEST REPORT


APPENDIX B

Test certificates (3)

Test 1 Slab

Test 1 of 3

200mm Concrete slab

PROJECT: PN4311 L3 U610 Deakin CBD Housing Geelong Waterfront Campus G Meas. Date: 22-Nov-17Test Location: L3 UF4.610 to L2 UF3.610 Meas. Parameter: LLeqTest Surface: 200mm Concrete slab Tapping Machine: Look Line EM50Client: Forbo Flooring Systems Receiving Room Volume: 102 m3

Test Performed: Rasika Chandrasekara

DESCRIPTION OF FLOOR AND SPECIMEN No. of Source posn: 4Floor: 200mm Concrete slab Mic. posn: 4 sweepsProduct: RT meas: 4 Imp.Adhesive: SLM: Nor 140Ceiling: Exposed concrete slab Slab: Concrete

Weighted Standardized Impact SPLResults standardized to a RT of 0.5 secondsImpact Insulation Class FIIC 30 ASTM E1007-97 & E989-89

Cen

tre F

requ

ency

Sta

nd. I

mpa

ct S

PL

Impa

ct R

ef C

onto

ur

Def

icie

ncie

s

Hz dB dB dB

100 53.7 71 125 55.5 71 160 56.6 71 200 57.9 71 250 56.8 71 315 57.3 71 400 58.4 70 500 59.1 69 630 59.1 68 800 60.2 67

1k 60.7 66 1.25k 61.1 63 1.6k 62.1 60 2.1

2k 62.9 57 5.92.5k 63.5 54 9.5

3.15k 64.1 51 13.1

TotalL'nT,w 69 30.5

24 Mexicanus Drive Park Ridge QLD 4125 Ph (61 7) 3802 2155 www.palmeracoustics.com

FIELD IMPACT SOUND INSULATION - TEST CERTIFICATE

L'nT,w 69 ISO 16283-2:2015 & 717-2:1996

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100

125

160

200

250

315

400

500

630

800 1k

1.25

k

1.6k 2k

2.5k

3.15

k

Stan

dard

ized

Impa

ct S

PL, L

'nT,

dB

1/3 Octave Band Centre frequency HZ

STANDARDIZED IMPACT SPL

Stand. Impact SPL

Impact Ref Contour

Member Firm: AAAC

Association of Australian Acoustical Consultants


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http://www.palmeracoustics.com/

Test 2 Vinyl

Test 2 of 3

5mm Allura Flex vinyl planks

PROJECT: PN4311 L3 U610 Deakin CBD Housing Geelong Waterfront LNT Meas. Date: 22-Nov-17Test Location: L3 UF4.610 to L2 UF3.610 Meas. Parameter: LLeqTest Surface: 5mm Allura Flex vinyl planks Tapping Machine: Look Line EM50Client: Forbo Flooring Systems Receiving Room Volume: 102 m3


DESCRIPTION OF FLOOR AND SPECIMEN No. of Source posn: 4Floor: 5mm Allura Flex vinyl planks Mic. posn: 4 sweepsProduct: RT meas: 4 Imp.Adhesive: SLM: Nor 140Ceiling: Exposed concrete slab Slab: 200mm Concrete slab


Cen

tre F

requ

ency

Sta

nd. I

mpa

ct S

PL

Impa

ct R

ef C

onto

ur

Def

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ncie

s

Hz dB dB dB

100 48.1 54 125 51.7 54 160 53.5 54 200 52.6 54 250 53.8 54 315 53.3 54 400 54.9 53 1.9500 54.3 52 2.3630 54.2 51 3.2800 54.2 50 4.2

1k 52.8 49 3.81.25k 50.8 46 4.81.6k 47.7 43 4.7

2k 42.1 40 2.12.5k 34.5 37

3.15k 28.3 34

TotalL'nT,w 52 27.1



L'nT,w 52 ISO 16283-2:2015 & 717-2:1996

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100

125

160

200

250

315

400

500

630

800 1k

1.25

k

1.6k 2k

2.5k

3.15

k

Stan

dard

ized

Impa

ct S

PL, L

'nT,

dB



Stand. Impact SPL

Impact Ref Contour

Member Firm: AAAC



palmer


palmer


Test 3 Vinyl + underlay

Test 3 of 3

5mm Allura Flex vinyl planks 2mm Acoustic silence underlay

PROJECT: PN4311 L3 U610 Deakin CBD Housing Geelong Waterfront LNT Meas. Date: 22-Nov-17Test Location: L3 UF4.610 to L2 UF3.610 Meas. Parameter: LLeqTest Surface: 5mm Allura Flex vinyl planks Tapping Machine: Look Line EM50Client: Forbo Flooring Systems Receiving Room Volume: 102 m3


DESCRIPTION OF FLOOR AND SPECIMEN No. of Source posn: 4Floor: 5mm Allura Flex vinyl planks Mic. posn: 4 sweepsProduct: 2mm Acoustic silence underlay RT meas: 4 Imp.Adhesive: Loosely laid SLM: Nor 140Ceiling: Exposed concrete slab Slab: 200mm Concrete slab


Cen

tre F

requ

ency

Sta

nd. I

mpa

ct S

PL

Impa

ct R

ef C

onto

ur

Def

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ncie

s

Hz dB dB dB

100 49.0 47 2.0125 53.2 47 6.2160 52.5 47 5.5200 51.8 47 4.8250 51.9 47 4.9315 49.3 47 2.3400 48.5 46 2.5500 43.8 45 630 38.5 44 800 < 30.3 43

1k < 25.4 42 1.25k < 21.2 39 1.6k < 18.2 36

2k < 16.2 33 2.5k 14.7 30

3.15k < 14.7 27

TotalL'nT,w 45 28.2



L'nT,w 45 ISO 16283-2:2015 & 717-2:1996

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100

125

160

200

250

315

400

500

630

800 1k

1.25

k

1.6k 2k

2.5k

3.15

k

Stan

dard

ized

Impa

ct S

PL, L

'nT,

dB



Stand. Impact SPL

Impact Ref Contour

Member Firm: AAAC



palmer


palmer


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