429 swan st pty ltd 16 - 26 farmer street, richmond ... · • roof top terraces ... distance...

PLANNING & ENVIRONME ACT 1987 YARRA PLANNING S ME

Report referred to in Permit Noy, ...... relating to Condition No: ••••

Fo nd on behalf of the R.-4:4.44;.:„. - tteiR DATE co 101 kok.--4 PAGES fUQ.0,

This is NOT a Building Per it

429 Swan St Pty Ltd

16 - 26 Farmer Street, Richmond

Acoustic Assessment

AAc1200

Final 15 July 2016

This report takes into account the particular instructions and requirements of our client.

It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party.

Job number 240122-00

Arup

Amp Ply Ltd ABN 18 000 966 165

Arup Level 17 I Nicholson Street Melbourne VIC 3000 Australia www.arup.com

Document Verification ARUP

Job title 16 - 26 Farmer Street, Richmond Job number

240122-00

Document title Acoustic Assessment File reference

Document ref AAc_R001

Revision Date Filename AAc_R001 Preliminary Acoustic Assessment_FarmerSt.docx

Final 15 July 2016

Description Final

Prepared by Checked by Approved by

Name Helen Searle/Mhairi Riddet

Frank Butera Frank Butera

Signature ,./44 el"-- -ILL_ ILL Filename Description

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AAc_R001 I Final 115 July 2016 1 Arup

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429 Swan St Pty Ltd 16 - 26 Farmer Street, Richmond Acoustic Assessment

Contents

Page

1 Introduction

1

2 Site Description 2

2.1 Subject Site 2 2.2 Proposed Development 2

3 Noise Criteria 4

3.1 Noise to the Environment 4 3.2 Noise Ingress to the Development 5

4 Preliminary Noise Mitigation Recommendations

7

4.1 Noise to the Environment 7 4.2 Noise within the Development 7

5 Proposed Planning Permit Conditions 8

6 Conclusion

9

Append ices

Appendix A

Glossary of Acoustic Terminology

Appendix B

Planning Map

Appendix C

Noise Survey

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429 Swan St Pty Ltd 16 - 26 Farmer Street. Richmond Acoustic Assessment

I Introduction

429 Swan St Pty Ltd propose to construct a residential development consisting of nine (9) three (3) storey townhouses at 16 — 26 Farmer Street, Richmond (hereafter the subject site).

Amp have been engaged to undertake a preliminary acoustic assessment of the development.

This report:

• Has been requested by City of Yarra in the Planning Permit (No. PLN14/1205)

• Identifies all existing noise sources impacting on the subject site

• Outlines the relevant noise criteria for the development

• Contains results of attended noise measurements used to assess the current noise environment at the subject site

• Recommends noise control treatment to be incorporated into the architectural design to achieve the recommended noise criteria

• Provides preliminary noise conditions for the subject site that may be considered by the Responsible Authority and VCAT for inclusion in a Planning Permit.

A glossary of acoustic terminology is provided in Appendix A.

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2 Site Description

2.1 Subject Site

The subject site is within the General Residential Zone (GRZ) and is adjacent to Commercial 2 Zone (C2Z) to the South. The planning map is provided in Appendix B.

The subject site is bounded by the following:

North

Farmer Street abuts the subject site to the north and comprises two lanes of local traffic. Directly across Farmer Street from the subject site are residential properties at 13 — 19 Farmer Street, Richmond.

East

Directly adjacent to the site is Cutter Street. Residential properties along Farmer Street to the north east, commercial properties to the south east.

South

A laneway, followed by future mixed use development of commercial and residential properties at 429 Swan Street. This is followed by Swan Street (a major road, with two lanes of traffic in each direction and a central tram corridor), which abuts the proposed mixed use development along its southern boundary. Further to the south (approximately 100 m) is a rail line and Burnley Station. The line of site to the rail line is shielded from the development by the bulk form of the industrial buildings along Swan Street.

West

Directly adjacent to the site are residential properties along Farmer Street to the north-west.

2.2 Proposed Development

The proposed development comprises of:

• Three (3) storey residential townhouses at 16 — 36 Farmer Street, Richmond

• At grade car parking, with a car stacker

• Residential units

• Roof top terraces

Arup has reviewed architectural drawing submitted by MA Architects for Planning Permit Endorsement/Amendment Submission dated July 2016.

2.2.1 Potential Noise Issues

Potential noise emissions associated with the development that may affect nearby noise sensitive properties include:

• Mechanical services noise

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429 Swan St Ply Lt 16 - 26 Farmer Street, Richmobd Acoustic Assessment

Potential existing noise sources which may affect the acoustic amenity within the development include:

• Traffic/ tram noise

• Mechanical services noise (commercial properties)

• Operational noise from cafe

Rail infrastructure noise was not assessed for the following reasons:

The proximity of the rail line is in excess of 100 m from the subject site. This distance results in lower noise levels at the development compared against noise levels resulting from other sources such as traffic/trams. In our opinion rail noise will not adversely impact the future occupants at the subject site.


2.V:00112..22. ASS SWAN STREETWOR.NTERNAL CCCUMENTSAAC_ROJ, PRELIMINARY ACOUSTIC ASSESSMENT_PARNERST OCC X


3 Noise Criteria

Noise criteria applicable to the subject site are to provide guidelines and/or limits for;

• noise egress from the site (mechanical services)

• impact to the proposed developments from surrounding noise sources (road, industry, music)

For reference, the criteria adopted in this study have been based primarily on legislation and Australian Standards provided by the applicable authorities.

This report refers to the following documents and recognised standards:

• State Environment Protection Policy (Control of Noise from Commerce, Indust?), and Trade) No. N-1, (SEPP N-1).

• AS2107-2000, Acoustics — Recommended design sound levels and reverberation times for building interiors

3.1 Noise to the Environment

3.1.1 Mechanical Services Noise

Within the Melbourne metropolitan area, noise from air-conditioning, ventilation, exhaust and refrigeration equipment and deliveries from commercial premises is governed by State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1 (SEPP N-1).

The objective of SEPP N-1 is to protect residential areas from noise generated by commercial, industrial or trade premises.

The calculation of noise limits requires the calculation of a zoning level that is based on land use in the surrounding area. The zoning level is then adjusted appropriately, depending on the measured background noise level. SEPP N-1 separates the day into three different time periods - day, evening and night, the time period as shown in Table 1.

Table 1: SEPP N-1 time periods

Period Day of week Time period

Day Monday — Friday 0700-1800hrs

Saturday 0700-1300hrs

Evening Monday — Friday 1800-2200hrs

Saturday 1300-2200 hrs

Sunday, Public Holidays 0700-2200hrs

Night Monday — Sunday 2200-0700hrs

SEPP N-1 requires that noise measurements be made directly outside the residence potentially affected by noise from commerce or industry. For multiple

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429 Swan St Pty Ltd 16 • 26 Farmer Street, Richmofid Acoustic Assessment

level buildings, measurements can be made outside the building on a balcony or with the microphone extended from an open window.

Arup undertook a noise survey on 19 January 2015 during the day/ evening period which comprised attended noise measurements and a site survey to:

• Gain an understanding of the existing noise environment at the subject site and nearest noise sensitive receivers

• Measure background noise levels to establish limits for noise emissions from the proposed development

Full details of the survey are provided in Appendix C.

Presented in Table 2 are the SEPP N-1 noise limits determined for the day, evening and night-time periods at the nearest affected residential properties. To comply with SEPP N-1, noise emission from any mechanical services emissions from the subject site must not exceed these noise limits.

Table 2: SEPP N-1 noise limits at 15 Farmer Street, Richmond dB re 20pPa.

Period Zoning Level, Leq dB (A)

Background Noise Level, L90 dB (A)

Neutral? Noise Limit, Leq dB (A)

Day 56 47 Yes 56

Evening 50 43 Yes 50

Night 45 41' Yes 45

3.2 Noise Ingress to the Development

3.2.1 Road Traffic Noise

VicRoads Requirements for Developers has been reviewed however does not apply to this development, as it is not adjacent to a freeway under VicRoads control. As a result it is common practise to consider Australian Standards to control road traffic noise. It is suggested to consider the following standards:

• AS 2107 — 2000 Acoustics — Recommended design sound levels and reverberation times for building interiors

• AS 3671 — 1989 Acoustics — Road traffic noise intrusion — Building siting and construction.

AS36712 recommends that satisfactory indoor sound levels should be determined from AS2I073• AS 2107 provides guideline design criteria for conditions affecting the acoustic environment within occupied spaces. The ambient sound levels recommended take into account the function of the area(s) and apply to the sound level measured with the space unoccupied but ready for occupancy. The

'Night-time noise level was taken from the Arup database based on experience of similar noise environments. 2 AS3671-1989 Acoustics — Noise traffic Noise Intrusion — Building Siting and Construction. 3 AS2107-2000 Acoustics - Recommended design sound levels and reverberation times for building interiors

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an Swan St Pty Ltd

16 - 26 Farmer Street, Richmond Acoustic Assessment

Standard also provides methods of measuring the ambient sound level and reverberation time in occupied spaces in new and existing buildings.

The purpose of AS3671 is to achieve compliance with AS2107. Demonstrating compliance with AS2107 is therefore equivalent to conformance with AS3671.

An extract of some of the recommended levels that are applicable to the proposed development is provided in Table 3 below.

Table 3: Recommended design sound levels for different areas of occupancy in buildings

Type of occupancy/activity Recommended design sound level, LAN, dB(A)

Satisfactory Maximum

Houses and apartments near minor roads-

Living areas 30 40

Sleeping areas 30 35

Work areas 35 40

Apartment common areas (e.g. foyer, lift lobby)

45 55

Houses and apartments near major roads-

Living areas 35 45


Work areas 35 45


45 55

Office Buildings

Board and conference rooms 30 40

General office areas 40 45

3.2.2 Mechanical Services Noise Ingress

As well as the statutory requirements of SEPP N-1, it is often appropriate to address the internal noise levels to ensure that the residential dwellings within the subject site have an acceptable acoustic amenity.

Mechanical services noise break-in from within the development shall be controlled to the noise levels provided in Table 3.


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429 Swan St Pty Ltd 16 - 26 Farmer Street, Richrnofid Acoustic Assessment



4.1.1 Car stacker and roller doors

Noise emitted from mechanical plant and doors associated with the car stacking equipment must comply with the SEPP N-1 noise limits to the nearby noise sensitive receivers. This includes residences within the subject site.

Methods to control noise and vibration from the roller door and car stacker include:

• Using resilient mountings for equipment

• Enclosing plant in a sound insulating material

A suitably qualified acoustic consultant shall review mechanical services equipment during the appropriate design phase and provide noise mitigation strategies, if required.

4.2 Noise within the Development

4.2.1 Glazing to Windows South Elevation

Double glazing in the form of 6 mm glass / 12 mm air gap / 6 mm glass has been recommended to all bedrooms along the southern elevations. This is expected to provide adequate internal acoustic amenity within the apartments.

4.2.2 Traffic/Tram Noise Ingress

Noise ingress to the development from traffic and trams along Swan Street, Cutter Street and Farmer Street shall be controlled to comply with the noise limits presented in Table 3.

Traffic/tram noise measurements were undertaken along Swan Street during the site survey on 19 January 2015 to inform the preliminary design requirements for the façade. Full details are provided in Appendix C.

To achieve the recommended internal noise levels, the building envelope elements (glazing including framing and all cladding elements) must achieve the following minimum sound reduction index:

• Ctr= 32

For glazing elements, this can be achieved with standard 6 mm glass / 12 mm air gap / 6 mm glass double glazing system or 10 mm laminated glass or other similar glazing configurations.

A suitably qualified acoustic consultant shall review the façade design during the appropriate design phase and provide noise mitigation strategies, if required.

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5 Proposed Planning Permit Conditions

The acoustic design of the development must:

• Control the noise intrusion of external noise sources, in accordance with the internal design criteria specified by relevant Australian Standards AS 2107 —2000 Acoustics — Recommended design sound levels and reverberation times for building interiors

• Achieve the sound insulation requirements of the National Construction Code (NCC);

• Comply with the State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1 (SEPP N-1).

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429 Swan St Pty Ltd 16 - 26 Farmer Street . Richmond Acoustic Assessment

6 Conclusion

Arup have undertaken an acoustic assessment for the proposed development at 16 — 26 Farmer Street, Richmond.

A site survey and noise measurements have been undertaken to understand the current noise environment at the subject site and establish noise limits for noise emissions from the site.

Preliminary noise mitigation measures have been provided for the development including:

• Noise limits for mechanical services noise emissions from the development

• Control of traffic/tram noise ingress to the development

• Control of noise within the mixed-use development from commercial activities

Proposed noise conditions for inclusion in the Planning Permit have been provided.


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Appendix A


429 Swan St Ply Ltd 16 - 26 Farmer Street. Rtchmdhd Acoustic Assessment

Background Noise Level

The background noise level is the noise level that is generally present at a location at all or most times. Although the background noise may change over the course of a day, over shorter time periods (e.g. 15 minutes) the background noise is almost-constant. Examples of background noise sources include steady traffic (e.g. motorways or arterial roads), constant mechanical or electrical plant and some natural noise sources such as wind, foliage, water and insects.

Decibel

The decibel scale is a logarithmic scale which is used to measure sound and vibration levels. Human hearing is not linear and involves hearing over a large range of sound pressure levels, which would be unwieldy if presented on a linear scale. Therefore a logarithmic scale, the decibel (dB) scale, is used to describe sound levels.

An increase of approximately 10 dB corresponds to a subjective doubling of the loudness of a noise. The minimum increase or decrease in noise level that can be noticed is typically 2 to 3 dB.

dB(A)

dB(A) denotes a single-number sound pressure level that includes a frequency weighting ("A-weighting") to reflect the subjective loudness of the sound level.

The frequency of a sound affects its perceived loudness. Human hearing is less sensitive at low and very high frequencies, and so the A-weighting is used to account for this effect. An A-weighted decibel level is written as dB(A).

Some typical dB(A) levels are shown below.

Sound Pressure Level dB(A) Example

130 Human threshold of pain

120 Jet aircraft take-off at 100 m

110 Chain saw at 1 m

100 Inside nightclub

90 Heavy trucks at 5 m

80 Kerbside of busy street

70 Loud stereo in living room

60 Office or restaurant with people present

50 Domestic fan heater at I m

40 Living room (without TV, stereo, etc)

30 Background noise in a theatre

20 Remote rural area on still night

10 Acoustic laboratory test chamber

0 Threshold of hearing

RECE lVL

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L90

The L90 statistical level is often used as the "average minimum" or "background" level of a sound level that varies with time.

Mathematically, L90 is the sound level exceeded for 90% of the measurement duration. As an example, 45 dB LA9o,ismin is a sound level of 45 dB(A) or higher for 90% of the 15 minute measurement period.

Leq

The 'equivalent continuous sound level', Leq, is used to describe the level of a time-varying sound or vibration measurement.

Leg is often used as the "average" level for a measurement where the level is fluctuating over time. Mathematically, it is the energy-average level over a period of time (i.e. the constant sound level that contains the same sound energy as the measured level). When the dB(A) weighting is applied, the level is denoted dB LAN Often the measurement duration is quoted, thus LAeq,15 mm represents the dB(A) weighted energy-average level of a 15 minute measurement.

Sound Power and Sound Pressure

The sound power level (Lw) of a source is a measure of the total acoustic power radiated by a source. The sound pressure level (Lp) varies as a function of distance from a source. However, the sound power level is an intrinsic characteristic of a source (analogous to its mass), which is not affected by the environment within which the source is located.

Sound Reduction Index (R)

The sound reduction index (or transmission loss) of a building element is a measure of the loss of sound through the material, i.e. its sound attenuation properties. It is a property of the component, unlike the sound level difference, which is affected by the common area between the rooms and the acoustics of the receiving room. R is the ratio (expressed in decibels) of the sound energy transmitted through the building element to the sound energy incident on the building element for a particular frequency.

The weighted sound reduction index, Rw, is a single figure description of sound reduction index across a wider frequency range and is defined in BS EN ISO 717-1: 1997. Rw values are calculated from measurements in an acoustic laboratory. Sound insulation ratings derived from site measurements (which are invariably lower than the laboratory figures) are referred to as apparent sound reduction index (R'w ) ratings.

Spectrum Adaptation Terms (C and Ctr)

The terms C and Ct, are spectrum adaptation terms (in dB) that are added to the Rw or Dw value of a partition in order to determine the overall sound insulation rating of a partition for various conditions. The overall performance of the partition is quoted as the sum of the Rw value and the spectrum adaptation terms, e.g. Dw+ C 55 dB; Rw + Ct, 60 dB.

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C is a spectrum adaptation term used to measure the performance of a partition for medium to high-frequency noise sources, such as speech.

Ctr is a spectrum adaptation term used to measure the performance of a partition for low-frequency noise sources such as traffic noise.

The values of C and Ctr are dependent on the construction of the partition. Because C and Ctr are (usually) negative quantities, they typically increase the Rw requirement of a partition (eg if Ctr is -6 dB, an Rw of 56 dB is required to achieve a rating of R,, + Ctr 50 dB).

RECEIVED

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Appendix B

Planning Map

Planning Map

Planning Map

Department of Transport, Planning and

Local Infrastructure

Al aPARK STR EET

CQZ117AvEliguE Copyright © State Government of Victoria. Service provided by www.land.vic.gov.au

ZONES ACI - Activity Centre

0 B12 . Commerce' I El 622 • Commercial I

632 • Conirrercsal 2 ▪ 642 • Commercial 2 N I P52 - Commercial I El CU • Comm.! I

czz - Cortmeruel 2 El CA • Commonwealth Land

I CC2 • Capital City

Cil CDZ • COMplehensive Development El D2 - Docklani El EP.2 - Enwermenta gsa

,2 Farming - General Reselenbal

- Green Wedge A El • Gem Wedge O - Industrial I • iri27_ - Industrial 2

ir132 Indostrid 3

1 tDP2 low Densey Resderbal • MUZ - fAxed Use

Pef.• Neelitiourhood Residential

PCRZ • Pubk Conservation ei Resource

▪

PD2 • Priority Development El PPRZ • Park Park e+ Recreation

PUZI • Pubk Use -Service alkiky O PUZ2 • Pubk Use - Education El PIM Pubk Use - Health Commtrety Ej Put, - Pr use - Transport O PUZS P. Use • CerneteryfCrematobrn

PUZ6 • Putt use • Local Government PUZ7 • Pubk Use • Other Pubic Use

▪ pz - Port o RIZ • General Residential El 022 - General Residential

P22 i General Resskinhal III RAZ • avai Actmtr

ACZ • Rand Consesvabon RUZI - Road - Category 1

11/11 RD22 - Road Category 2 RGZ Regdential Grogth 16.2 • Rural living

0 RU2 Rural El 5112 • Vocal Use

T2 • Township UFZ urban Roadway

• Urban Growth

Legend

seeitatilassoos Major Town Mart Road, Road

si,ws smear Road name Realreav, Tram/ray

0= PropertyParcel. Select, 2s 2 PC Address, Lot, Crown allotrnenz River. Stearn. Coastline I Waterbody

Locally Locakty Name Local Government Area

seill180,1n Local Government Name Urban Growth Boundalir Area outside the ()GB

7,17 ,71 Investigation Area Land added to 1103 once 2001 Boundary of Searched Suburb

OVERLAYS 0 AEO - Airport Environs =I (SIC Land Subs., to Inurkision

0 61.40 • flushlve Management lalso WMOI I=1 MAE01 ' Neb.... AV.' Enw... I=1 CLPO CA Lae Protect 0 ato.E02 • Melbourne Amon Emmons

DEP° Development Ccntebusons Plan 0 NCO - Nerghbotahood Oswego

EZ3 D00 • Deor &Development =I PO • Parkng

1:3 ODOPT • Ciesco a Development Pan 0 PAO PubkAcquiskko DPO • Development Plan Ml RO -Restructure

El EA0 Envecrerentalkelt Si:: RCO • Road Csure

O EMO . Egotion Management 0 SBO . Special Buldvg

El ISO i Err/sonars/kg Sgslocancer = SLO • Sconce,* Landscape

lE/ FO Floodway 0 SMO - Sakstyklanagernew

O HO Media. 0 SRO • Stets Resource

O IFO Incaresated Kin 0 VP0 Vegeta= Protects.

Disclaimer This map is a snapshot generated from Victorian Government data This material may be of assistance to you but the Stale of Victoria does not guarantee that the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaims all liability for error, loss or damage which may arise

from reliance upon it All persons accessing this information should mace appropriate enquiries to assess the currency of data

Map Centre - Melways 2H E10

Map Scale Ate

January 9, 2015 12 2W-lalfr. 'Victoria

c.)

Appendix C

Noise Survey

429 Swan St Ply Ltd

16 - 26 Farmer Street, Richmond Acoustic Assessment

Cl Noise Survey

C1.1 Measurement Procedure

C1.1.1 Measurement Locations

Noise measurements were undertaken at the locations identified below in Figure 1.

Figure 1: Noise measurement locations

Attended measurements were taken at the locations shown in Figure 1 on 19 January 2015 between 1500 hours (3.00 p.m) and 1930 hours (7.30 p.m). Measurement Location 1 and 2 were chosen to be representative of noise environment at the nearest noise sensitive receiver and the facade line of the proposed development, respectively.

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Page Cl

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5 OC1 `16


The sound level meter was mounted on a tripod with the microphone at 1.5 m above ground level and set to fast time response for all measurements. The measurements were undertaken in free-field conditions (i.e. away from noise reflecting structures).

Noise measurements wereperformed in general accordance with Australian Standards 10554 and 2702'.

C1.1.2 Equipment

The equipment used to measure the noise levels is provided in Table 4 below.

Table 4: Noise monitoring equipment list

Manufacturer Name of Instrument Serial Number

Briiel and Kjwr 2250 Sound Level Meter 2630367

Brilel and Kjwr Type 4321 Calibrator 1790603

The equipment was checked for calibration before and after each set of measurements, with no significant drift occurring.

C1.2 Measured Noise Levels

C1.2.1 Traffic/Tram Noise Levels

The existing traffic noise levels at 429 Swan Street have been measured. These are summarised in Table 5 below.

Table 5: Measured tram/traffic noise levels at 429 Swan Street, Richmond

Measured noise levels dB(A) Octave Band Centre Frequency, Hz

63 125 250 500 lk 2k 4k 8k

LAN,10. (measurement across the evening peak traffic period)

70 74 67 66 64 67 62 53 4

LAmpassby (tram noise only) 77 72 72 68 711 74 69 -36 4 3

C1.2.2 Background Noise Levels

The background noise levels at the nearest noise sensitive receiver have been measured to establish the noise limits for industrial noise emissions from the subject site. The measured noise levels for the daytime and evening time periods are provided in Table 6 below.

AS 1055-1997 Acoustics — Description and measurement of Environmental Noise, Standards Australia 5 AS2702-1984 Acoustics — Methods for the measurement of Road Traffic Noise, Standards Australia

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429 Swan St Pty Ltd 16 - 26 Farmer Street. Richmotid Acoustic Assessment

Table 6: Measured background noise levels at 15 Farmer Street, Richmond


63 125 250 500 1k 2k 4k 8k

LA90, IOmm (day time) 47 54 47 45 44 43 37 31 25

LA90, I Ornm (evening time) 43 5I 45 40 40 38 33 28 21

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429 Swan St Pty Ltd

429 - 437 Swan Street, Richmond

Preliminary Acoustic Assessment

AAc_R001

Final I 15 July 2016

This report takes into account the particular instructions and requirements of our client.

It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party.

Job number 240122-00

Amp Arup Pty Ltd ABN 18 000 966 165

Arup Level 17

I Nicholson Street Melbourne VIC 3000 Australia www.arup.com ARUP

Document Verification

ARUP Job title 429 - 437 Swan Street, Richmond Job number

240122-00

Document title Preliminary Acoustic Assessment File reference

Document ref AAc R001 _

Revision Date Filename AAc_R001 Preliminary Acoustic Assessment_SwanSt.docx

Final 15 July 2016

Description Final


Name Helen Searle/Mhairi Riddet

Frank Butera Frank Butera

Signature ,s'-—" --ILL ILL Filename Description


Name

Signature

Filename Description


Name

Signature

Filename

Description


Name

Signature

Issue Document Verification with Document


J l2■00031240122.00 429 SWAN SIRE ET WORM NTERNAL EMU ME NTSWCJI 001 PRELIMINARY ACOUSTIC ASSESSMENT_SWANST COGS

429 Swan St Pty Ltd 429 - 437 Swan Street, Richmond Preliminary Acoustic Assessment

Contents

Page

1 Introduction 1

2 Site Description 2

2.1 Subject Site 2

2.2 Proposed Development 2

3 Noise Criteria 4

3.1 Noise to the Environment 4

3.2 Noise Ingress to the Development 5

4 Preliminary Noise Mitigation Recommendations 7

4.1 Noise to the Environment 7

4.2 Noise within the Development 7

5 Proposed Planning Permit Conditions 11

6 Conclusion 12

Append ices

Appendix A


Appendix B

Planning Map

Appendix C

Noise Survey


.1.3100:0,240,22C0 129 SWAN STR EEYWYORKJNTERNAE\D0cUME NTSWAC_RCOI PRELIMINARY ACOUSTIC ASSESS ME NT_SWANST 00CX

429 Swan St Pty Ltd 429 - 437 Swan Street, Rithmorld Preliminary Acoustic Assessment

1 Introduction

429 Swan St Pty Ltd propose to construct a six (6) storey mixed-use development at 429 — 437 Swan Street, Richmond (hereafter the subject site).

Arup have been engaged to undertake a preliminary acoustic assessment of the development.

This report:

• Has been requested by City of Yarra in the Planning Permit (No. PLN14/1205)

• Identifies all existing noise sources impacting on the subject site

• Outlines the relevant noise criteria for the development

• Contains results of attended noise measurements used to assess the current noise environment at the subject site

• Recommends noise control treatment to be incorporated into the architectural design to achieve the recommended noise criteria

• Provides preliminary noise conditions for the subject site that may be considered by the Responsible Authority and VCAT for inclusion in a Planning Permit.

A glossary of acoustic terminology is provided in Appendix A.

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2 Site Description

2.1 Subject Site

The subject site is in Commercial 1 Zone (C1Z) and is adjacent to Commercial 2 Zone (C2Z) to the South. The planning map is provided in Appendix B.

The subject site is bounded by the following:

North

A laneway, followed by a future residential development and Farmer Street (a local traffic street with two lanes of traffic) abuts the subject site to the north.

East

Directly adjacent to the site is Cutter Street. Residential properties along Farmer Street to the north east, commercial properties to the south east.

South

Swan Street (major road, two lanes of traffic in each direction with a central tram corridor) abuts the proposed mixed use development along its southern boundary. Further to the south (approximately 100 m) is a rail line and Burnley Station. The line of site to the rail line is shielded from the development by the bulk form of the industrial buildings along Swan Street.

West

Directly adjacent to the site are residential properties along Farmer Street to the north-west and commercial properties along Swan Street to the south-west.

2.2 Proposed Development

The proposed development comprises:

• A six (6) storey mixed-use development at 429 — 437 Swan Street, Richmond comprising:

• Basement car parking, including a car stacker and associated entry gates

• Café, commercial spaces and two residential apartments at ground level

• Residential apartments on the upper levels

• Roof-top plant area

Amp has reviewed architectural drawing submitted by MA Architects for Planning Permit Endorsement/Amendment Submission dated July 2016.

2.2.1 Potential Noise Issues

Potential noise emissions associated with the development that may affect nearby noise sensitive properties include:

• Mechanical services noise


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Potential existing noise sources which may affect the acoustic amenity within the development include:

• Traffic/ tram noise

• Mechanical services noise (commercial properties)

• Operational noise from cafe

Rail infrastructure noise was not assessed for the following reasons:

The proximity of the rail line is in excess of 100 m from the subject site. This distance results in lower noise levels at the development compared against noise levels resulting from other sources such as traffic/ trams. In our opinion rail noise will not adversely impact the future occupants at the subject site.

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425 Swan St Ply Ltd 429 - 437 Swan Street, Richmond Preliminary Acoustic Assessment

3 Noise Criteria

Noise criteria applicable to the subject site are to provide guidelines and/or limits for;

• noise egress from the site (mechanical services)

• impact to the proposed developments from surrounding noise sources (road, industry, music)

For reference, the criteria adopted in this study have been based primarily on legislation and Australian Standards provided by the applicable authorities.

This report refers to the following documents and recognised standards:

• State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1, (SEPP N-1).

• AS2I07-2000, Acoustics — Recommended design sound levels and reverberation times for building interiors


3.1.1 Mechanical Services Noise

Within the Melbourne metropolitan area, noise from air-conditioning, ventilation, exhaust and refrigeration equipment and deliveries from commercial premises is governed by State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-I (SEPP N-1).

The objective of SEPP N-1 is to protect residential areas from noise generated by commercial, industrial or trade premises.

The calculation of noise limits requires the calculation of a zoning level that is based on land use in the surrounding area. The zoning level is then adjusted appropriately, depending on the measured background noise level. SEPP N-1 separates the day into three different time periods - day, evening and night, the time period as shown in Table 1.

Table 1: SEPP N-1 time periods

Period Day of week Time period

Day Monday — Friday 0700-1800hrs


Evening Monday — Friday 1800-2200hrs


Sunday, Public Holidays 0700-2200hrs

Night Monday — Sunday 2200-0700hrs

SEPP N-1 requires that noise measurements be made directly outside the residence potentially affected by noise from commerce or industry. For multiple


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429 Swan St Pty Ltd 429 - 437 Swan Street Richrnorld Preliminary Acoustic Assessment

level buildings, measurements can be made outside the building on a balcony or with the microphone extended from an open window.

Arup undertook a noise survey on 19 January 2015 during the day/ evening period which comprised attended noise measurements and a site survey to:

• Gain an understanding of the existing noise environment at the subject site and nearest noise sensitive receivers

• Measure background noise levels to establish limits for noise emissions from the proposed development

Full details of the survey are provided in Appendix C.

Presented in Table 2 are the SEPP N-1 noise limits determined for the day, evening and night-time periods at the nearest affected residential properties. To comply with SEPP N-1, noise emission from any mechanical services emissions from the subject site must not exceed these noise limits.

Table 2: SEPP N-1 noise limits at 15 Farmer Street, Richmond dB re 20gPa.

Period Zoning Level, L. dB (A)

Background Noise Level, L90 dB (A)

Neutral? Noise Limit, LI dB (A)

Day 56 47 Yes 56

Evening 50 43 Yes 50

Night 45 41' Yes 45

3.2 Noise Ingress to the Development

3.2.1 Road Traffic Noise

VicRoads Requirements for Developers has been reviewed however does not apply to this development, as it is not adjacent to a freeway under VicRoads control. As a result it is common practise to consider Australian Standards to control road traffic noise. It is suggested to consider the following standards:

• AS 2107 — 2000 Acoustics — Recommended design sound levels and reverberation times for building interiors

• AS 3671 — 1989 Acoustics — Road traffic noise intrusion — Building siting and construction.

AS36712 recommends that satisfactory indoor sound levels should be determined from AS21073. AS 2107 provides guideline design criteria for conditions affecting the acoustic environment within occupied spaces. The ambient sound levels recommended take into account the function of the area(s) and apply to the sound level measured with the space unoccupied but ready for occupancy. The

Night-time noise level was taken from the Arup database based on experience of similar noise environments. 2 AS367I -1989 Acoustics — Noise traffic Noise Intrusion — Building Siting and Construction. 40\%4C'C. 3 AS2 107-2000 Acoustics - Recommended design sound levels and reverberation times for building cy

f\.% interiors

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429 Swan St Pty Ltd

429 - 437 Swan Street, Richmond Preliminary Acoustic Assessment

Standard also provides methods of measuring the ambient sound level and reverberation time in occupied spaces in new and existing buildings.

The purpose of AS3671 is to achieve compliance with AS2107. Demonstrating compliance with AS2107 is therefore equivalent to conformance with AS3671.

An extract of some of the recommended levels that are applicable to the proposed development is provided in Table 3 below.

Table 3: Recommended design sound levels for different areas of occupancy in buildings

Type of occupancy/activity Recommended design sound level, LAN, dB(A)


Houses and apartments near minor roads-

Living areas 30 40


Work areas 35 40


45 55


Living areas 35 45


Work areas 35 45


45 55

Office Buildings

Board and conference rooms 30 40

General office areas 40 45

3.2.2 Mechanical Services Noise Ingress

As well as the statutory requirements of SEPP N-1, it is often appropriate to address the internal noise levels to ensure that the residential dwellings within the subject site have an acceptable acoustic amenity.

Mechanical services noise break-in from within the development should be controlled to the levels provided in Table 3.


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4.1.1 Mechanical Plant

Noise emitted from commercial activities related to the café must comply with SEPP N-1 noise limits to the nearby noise sensitive receivers. This includes mechanical services plant associated with the venue.

The café tenant must select and located suitable mechanical services equipment to ensure compliance with the SEPP N-1 noise limits.


4.1.2 Car stacker and roller doors

Noise emitted from mechanical plant and doors associated with the car stacking equipment must comply with the SEPP N-1 noise limits to the nearby noise sensitive receivers. This includes residences within the subject site.

Methods to control noise and vibration from the roller door and car stacker include:

• Using resilient mountings for equipment

• Enclosing plant in a sound insulating material


4.2 Noise within the Development

4.2.1 Ground Floor Units Adjoining Café and Substation

The café (COMM 06) is proposed to be located adjacent to the ground floor residential unit (0.01). It is recommended that the common wall shall conform to the NCC requirements as required for residential to plant room sound insulation, as a minimum. An example construction to meet this requirement is shown in Table 4.

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429 Swan St Pty Ltd


Table 4: Example construction for cafe/residential common wall

Construction Sketch Construction Description Acoustic Rating

• Concrete/ precast panel (minimum thickness 100mm)

Rw + Ct, > 50 dB

Discontinuous In • 64 mm steel stud

• 50 mm glass wool insulation in cavity (min. 11 kgm-3)

• 20 mm minimum clearance between stud and lining

ri

• 13 mm fire-rated plasterboard

A suitably qualified acoustic consultant should review the proposed construction to assist with minimising the risk of noise disturbance to this unit during the appropriate design phase.

4.2.2 Glazing to windows

Double glazing in the form of 6 mm glass / 12 mm air gap / 6 mm glass has has been included to all bedrooms along the northern elevation and above the café on the east elevation along Cutter Street. This is expected to provide adequate internal acoustic amenity within the apartments.

4.2.3 Glazing to Walkways

To meet the acoustic NCC requirement for a minimum of Rw 50 between public corridors and sole occupancy units while maintaining the architectural intent to incorporate a window (required for day-lighting) in the partition, a double glazed unit or "wintergarden" type approach will be required. The current architectural design shows "push out" windows to walkways (Figure 1) which are predicted to meet the NCC requirement with the use of conventional glazing and well-sealed sliding screens.

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429 Swan St Pty Ltd

429 - 437 Swan Street, Richmortd Preliminary Acoustic Assessment

Figure 1: Partitions incorporating glazing between bedrooms to walkways

Although the acoustic intent is predicted to be satisfied by the above construction, the current NCC is unclear as to whether a window can be included in a partition of this nature. This issue will require clarification by the Building Surveyor.

A suitably qualified acoustic consultant will be required to review the glazing design against NCC criteria during the appropriate design phase and provide further design input as required.

4.2.4 Residential Units Above Ground Level Commercial Tenants

Noise ingress from the café, services platform and commercial tenants on Ground Level has potential to disturb residential units situated on Level One.

The common floor/ceiling shall conform to National Construction Code acoustic requirements, as detailed for residential to residential floor/ceiling airborne sound insulation, as a minimum. However, it is recommended that this common element have a greater performance than that required to comply with the National Construction Code to reduce the risk of potential noise emission.

A suitably qualified acoustic consultant shall review the proposed construction to assist with minimising the risk of noise disturbance to these units.

4.2.5 Traffic/Tram Noise Ingress

Noise ingress to the development from traffic and trams along Swan Street shall be controlled to comply with the noise limits presented in Table 3.

Traffic/tram noise measurements were undertaken along Swan Street during the site survey on 19 January 2015 to inform the preliminary design requirements for the façade. Full details are provided in Appendix C.

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To achieve the recommended internal noise levels, the building envelope elements (glazing including framing and all cladding elements) must achieve the following minimum sound reduction index:

• Rw+ Ct, = 32

For glazing elements, this can be achieved with standard 6/12/6 double glazing, 10 mm laminated glass or other similar glazing configurations.

Unit 1.06, 2.06, 3.06, 4.06 have bedroom windows overlooking Swan Street which may require additional acoustic treatment to meet recommended internal noise levels.

A suitably qualified acoustic consultant shall review the façade design during the appropriate design phase and provide noise mitigation strategies, if required.


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429 Swan St Pty Ltd 429 • 437 Swan Street. Richmodd Preliminary Acoustic Assessment

5 Proposed Planning Permit Conditions

The acoustic design of the development must:

• Control the noise intrusion of external noise sources, in accordance with the internal design criteria specified by relevant Australian Standards AS 2107 —2000 Acoustics — Recommended design sound levels and reverberation times for building interiors

• Achieve the sound insulation requirements of the National Construction Code (NCC);

• Comply with the State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1 (SEPP N-1).


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6 Conclusion

Amp have undertaken an acoustic assessment for the proposed development at 429 — 437 Swan Street, Richmond.

A site survey and noise measurements have been undertaken to understand the current noise environment at the subject site and establish noise limits for noise emissions from the site.

Preliminary noise mitigation measures have been provided for the development including:

• Noise limits for mechanical services noise emissions from the development

• Control of traffic/tram noise ingress to the development

• Control of noise within the mixed-use development from commercial activities

Proposed noise conditions for inclusion in the planning permit have been provided.

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Appendix A



Background Noise Level

The background noise level is the noise level that is generally present at a location at all or most times. Although the background noise may change over the course of a day, over shorter time periods (e.g. 15 minutes) the background noise is almost-constant. Examples of background noise sources include steady traffic (e.g. motorways or arterial roads), constant mechanical or electrical plant and some natural noise sources such as wind, foliage, water and insects.

Decibel

The decibel scale is a logarithmic scale which is used to measure sound and vibration levels. Human hearing is not linear and involves hearing over a large range of sound pressure levels, which would be unwieldy if presented on a linear scale. Therefore a logarithmic scale, the decibel (dB) scale, is used to describe sound levels.

An increase of approximately 10 dB corresponds to a subjective doubling of the loudness of a noise. The minimum increase or decrease in noise level that can be noticed is typically 2 to 3 dB.

dB(A)

dB(A) denotes a single-number sound pressure level that includes a frequency weighting ("A-weighting") to reflect the subjective loudness of the sound level.

The frequency of a sound affects its perceived loudness. Human hearing is less sensitive at low and very high frequencies, and so the A-weighting is used to account for this effect. An A-weighted decibel level is written as dB(A).

Some typical dB(A) levels are shown below.

Sound Pressure Level dB(A) Example

130 Human threshold of pain

120 Jet aircraft take-off at 100 m

110 Chain saw at 1 m

100 Inside nightclub

90 Heavy trucks at 5 m

80 Kerbside of busy street

70 Loud stereo in living room

60 Office or restaurant with people present

50 Domestic fan heater at 1m

40 Living room (without TV, stereo, etc)

30 Background noise in a theatre

20 Remote rural area on still night

10 Acoustic laboratory test chamber

0 Threshold of hearing

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L90

The L90 statistical level is often used as the "average minimum" or "background" level of a sound level that varies with time.

Mathematically, L90 is the sound level exceeded for 90% of the measurement duration. As an example, 45 dB LA9o,15min is a sound level of 45 dB(A) or higher for 90% of the 15 minute measurement period.

Leq The 'equivalent continuous sound level', Leq, is used to describe the level of a time-varying sound or vibration measurement.

Leg is often used as the "average" level for a measurement where the level is fluctuating over time. Mathematically, it is the energy-average level over a period of time (i.e. the constant sound level that contains the same sound energy as the measured level). When the dB(A) weighting is applied, the level is denoted dB LAN Often the measurement duration is quoted, thus LAeq,15 min represents the dB(A) weighted energy-average level of a 15 minute measurement.

Sound Power and Sound Pressure

The sound power level (LW) of a source is a measure of the total acoustic power radiated by a source. The sound pressure level (Lp) varies as a function of distance from a source. However, the sound power level is an intrinsic characteristic of a source (analogous to its mass), which is not affected by the environment within which the source is located.

Sound Reduction Index (R)

The sound reduction index (or transmission loss) of a building element is a measure of the loss of sound through the material, i.e. its sound attenuation properties. It is a property of the component, unlike the sound level difference, which is affected by the common area between the rooms and the acoustics of the receiving room. R is the ratio (expressed in decibels) of the sound energy transmitted through the building element to the sound energy incident on the building element for a particular frequency.

The weighted sound reduction index, R, is a single figure description of sound reduction index across a wider frequency range and is defined in BS EN ISO 717-1: 1997. Rw values are calculated from measurements in an acoustic laboratory. Sound insulation ratings derived from site measurements (which are invariably lower than the laboratory figures) are referred to as apparent sound reduction index (R'w ) ratings.

Spectrum Adaptation Terms (C and Ctr)

The terms C and Ctr are spectrum adaptation terms (in dB) that are added to the Rw or Dw value of a partition in order to determine the overall sound insulation rating of a partition for various conditions. The overall performance of the partition is quoted as the sum of the Rw value and the spectrum adaptation terms, e.g. Dw+ C 55 dB; Rw + Ctr 60 dB.

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C is a spectrum adaptation term used to measure the performance of a partition for medium to high-frequency noise sources, such as speech.

Cti- is a spectrum adaptation term used to measure the performance of a partition for low-frequency noise sources such as traffic noise.

The values of C and Ct are dependent on the construction of the partition. Because C and Cu are (usually) negative quantities, they typically increase the Rw requirement of a partition (eg if Ctr is -6 dB, an R., of 56 dB is required to achieve a rating of R., + Ctr 50 dB).

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Appendix B

Planning Map

IoM.-

Planning Map

Planning Map

Department of Transport, Planning and

Local Infrastructure

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7

AVEN E111 gt!uuREET SAGO STREET

STREET

ju,PARKVILLE STREET p

cc w c:i ,

1: , 1.- Ea. en BURLEY-, cp• r

0 110 220 11 if coil, Ctazz,

AVENuE Copyright State Government of Victoria. Service provided by www.land vier gov au

Legend

WILINOZWIDOOL Major Town - - Maier Road, Road

°eureka sumer Road name - , Railway, Tramway

Property/Parcel, Selected

25 2 t C Address. Lot, Crown allotment River. Stearn. Coastline Waterbeds,

Locality

Locality Name Local Government Area

551M5A.. Local Government Name

Urban Growth Boundary (UGB)

Area outside the UG8

7.74.7.4.7, Investigation Area

Land added to UGB since 2005

Boundary of Searched Suburb

ZONES ACZ Actney Centre

El 1312 - Commercial B2Z - Cornmerckil I

.11 B32 - Commardal 1342 - Commercial 2 135Z - Commercial I

El C12 - Commerclal t 1.1 C2Z - Commercial 2 0 CA - Commonwealth Land 1121 CCZ - Cape& City

CD2 - Careorehensrve Development 1.1 DZ - Dockland I= ERZ - Enwronmental Rural 0 F2 • Farrang El GRZ - General Residential

..JYAZ - Green Wedge A Green Wedge

- Industrial '. IT - Industrial 2

.•. Industrial 3 L. Density Repdennal

. r MNed Use rIRZ Neighbourhood Residential

PCRZ - Pubic Conservation & Resource POZ Priorty Development PPRZ - Pubic Park &Recreation

El FIR! - Pubic Use - Service & 0 PU22 Pubk Use - Eckkatker

PLI23 - Pubk Use • Heakh Community

El PUZe - Pubic Use • Transport

CI PU25 - Rabic Use - CenosteryJCrematorkrn

El PLI26 - Re* Use - local Government

0 PU27 • Pubic Use - Other Pubk Use

0 02 - Port

El RIZ - General Rendentrd

El R22 - General Residenhd R32 - General Residential

• RAZ - Rural Activity RCZ Rurd Conservation RDZI - Road - Category I RDZ2 - Road • Category 2

123 RG2 - Reskientid Growth

El RLZ - Rural Living

El RUZ - 0.u-el

CI SUZ - Special Use TZ - Township

El uP2 - Urban Ploodway

El UGZ - Urban Growth

OVERLAYS O AEO • Akport Envions I=I BIM 0 • Buda. Menagement {also WMEN O CLP13 • Cory Link Project O EICRO • Development Contrhunons Ken El DDO • Dingo& Develatment EMI DDOPT • Design 6 Devebmment Part

DPO - Development Plan EA0 Erwronmental Audi EMO • Erosion Management

I=I ESC • Enveorenental Sogreficance 1=1 FO • Headway I= HO • Hate,

IPO • Incorporated Plan

II 1510 Leal Subsea to I nadation MAE01 • Melbourne Akron Enaons I

El MAE 02 • Melocume Mood Emmons 2 =I NCO • Neighbourhood Character [=1 PO • Parkre 1=1 PAO . Public Acqurstbon

RO • Re-Pruett. Rai • Road Closue

1:3 SBO Special Balding SLO • Srooncantlandeeke

SMO • Sande idenePantlnl = SRO • State Resat..

VPO • Vegetation Prdectao

Disclaimer: This map is a snapshot generated from Victorian Government data This material may be of assistance to you but the State of Victoria does not guarantee that

the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaims all liability for error, loss or damage which may arise

from reliance upon it All persons accessing this informaton should make appropriate enquiries to assess the currency of data.

Map Centre - Melways 2H El 0 Map Scale 1:5,000

January 9, 2015 12:23:57 PM

IN3Z

Appendix C

Noise Survey

429 Swan St Pty Ltd


Cl Noise Survey

C1.1 Measurement Procedure

C1.1.1 Measurement Locations

Noise measurements were undertaken at the locations identified below in Figure 2.

Figure 2: Noise measurement locations

Attended measurements were taken at the locations shown in Figure 2 on 19 January 2015 between 1500 hours (3.00 p.m) and 1930 hours (7.30 p.m). Measurement Location 1 and 2 were chosen to be representative of noise environment at the nearest noise sensitive receiver and the façade line of the proposed development, respectively.

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429 Swan St Pty Ltd 429 - 437 Swan Street, Rithmorrd Preliminary Acoustic Assessment

The sound level meter was mounted on a tripod with the microphone at 1.5 m above ground level and set to fast time response for all measurements. The measurements were undertaken in free-field conditions (i.e. away from noise reflecting structures).

Noise measurements wereperformed in general accordance with Australian Standards 10554 and 2702'.

C1.1.2 Equipment

The equipment used to measure the noise levels is provided in Table 5 below.



Brilel and Kjxr 2250 Sound Level Meter 2630367

Briiel and Kjxr Type 4321 Calibrator 1790603

The equipment was checked for calibration before and after each set of measurements, with no significant drift occurring.

C1.2 Measured Noise Levels

C1.2.1 Traffic/ Tram Noise Levels

The existing traffic noise levels at 429 Swan Street have been measured. These are summarised in Table 6 below.

Table 6: Measured tram/ traffic noise levels at 429 Swan Street, Richmond


63 125 250 500 lk 2k 4k 8k

LAeri, 10min (measurement across the evening peak traffic period)

70 74 67 66 64 67 62 53 43

LAeq,passby (tram noise only) 77 72 72 68 70 74 69 56 43

C1.2.2 Background Noise Levels

The background noise levels at the nearest noise sensitive receiver have been measured to establish the noise limits for industrial noise emissions from the subject site. The measured noise levels for the daytime and evening time periods are provided in Table 6 below.

AS 1055-1997 Acoustics Description and measurement of Environmental Noise, Standards Australia 5 AS2702-1984 Acoustics — Methods for the measurement of Road Traffic Noise, Standards Australia


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42,9 Swan St Pty Ltd

429 - 437 Swan Street. Richmond Preliminary Acoustic Assessment

Table 7: Measured background noise levels at 15 Farmer Street, Richmond


63 125 250 500 lk 2k 4k 8k

LA90,10min (day time) 47 54 47 45 44 4; 37 ;I 25

LA90.10mm (evening time) 43 51 45 an 411 38 33 28 21

OCV

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Your ref

Our ref 240122-00

File ref L001 A RU P

Tim McBride-Burgess Contour Consultants Aust Pty Ltd Level 1/283 Drummond Street Carlton, VIC, 3053

Arup Level 17

1 Nicholson Street VIC

East Melbourne, 3002 Australia

t +61 396631546 [email protected]

www.arup.com

16 February 2017

Dear Tim

429-437 Swan Street and 16-26 Farmer Street, Richmond Traffic Noise Assessment

Arup has completed a Preliminary Acoustic Assessment of the proposed mixed use development at 429-437 Swan Street and 16-26 Farmer Street, Richmond, in ArLip' s Acoustic Assessment reports dated 15 July 2016. In response to a review and feedback of these reports from Yarra City Council, this letter provides detailed information regarding the traffic noise assessment for the proposed development. Noise mitigation recommendations for the facade is are also provided in order to limit traffic noise intrusion into noise sensitive areas within the proposed development. This is to address Conditions 9(a) and 9(b) of Planning Permit No. PLN14/1205. These conditions state:

• 9) Before the plans for each stage are endorsed, an amended Acoustic Report (relevant to that stage) to the satisfaction of the Responsible Authority must be submitted to and approved by the Responsible Authority. When approved, the amended Acoustic Report will be endorsed and will form part of this permit. The amended Acoustic Report must include the details in the Acoustic Report prepared by Arup dated 12 February 2015 and must include the following:

• a) Internal noise levels in habitable rooms in relation to road traffic to not exceed the AS/NZS2107 'maximum' levels for any single hour; or the LAeq, 15 hour and LAeq, 9 hour levels to not exceed the mid-point between the AS/NZS2107 `satisfactory' and 'maximum' levels; and

• b) Preliminary advice must be included in the report for controlling noise from the car park entrance gates and car stackers to the apartments directly above; and between the cafe/commercial kitchen and the abutting apartments. The advice must include guidance for vibration isolation to minimise structure borne sound transmission, and a recommended maximum noise level for these items (e.g. Lmax at 1 m from any part of the gate or motor, to be not greater than 65 dB(A)) and to limit sleep disturbance to 40 dB(A) Lmax in the bedrooms and 45 dB(A) Lmax in the living rooms.

-W4000024012240 420 SWAN STREETWORKNINTERNALVDOCUNENTS1AAC _LOW TRAFFIC NOISE ASSESSMENT.DOCX

Arup Arup Ply Ltd ABN 18 000 966 165

Tr

240122-00

16 February 2017

Page 2 of 7 . gm%

• 10) The provision, recommendations and requirements of the endorsed Acoustic Report must be implemented and complied with to the satisfaction of the Responsible Authority.

Traffic Noise Measurements

Amp completed long term traffic noise measurements between 16 and 24 January 2017. The noise measurement location was on top of the commercial premises at 437 Swan Street. The microphone was placed 1.2 m above roof height.

There was a brick wall shielding the microphone from traffic at street level. The brick wall was approximately 1.5 m above roof height, and shielded the microphone from direct, perpendicular line of sight to Swan Street. The microphone was still partially exposed to traffic noise from Swan Street to the south, as shown on the left in Figure 1 below.

Figure 1: Position of noise monitoring microphone on roof of 437 Swan Street

In order to compensate for the decrease in noise level caused by the barrier effect of the brick wall and the distance from the facade, a calibration factor of 4 dB(A) was added to the measurements obtained from the noise logger.

The calibration factor was determined by comparing attended, unshielded street level measurements with the unattended, shielded measurements. Attended measurements were taken between 10:30 hrs (10:30 am) and 11:30 hrs (11:30 am) in order to determine the correction factor.

Equipment used to measure noise levels is listed in Table 1 below.



Briiel and Kjxr 2250 Sound Level Meter 2630367

Briiel and Kjaer Type 4321 Calibrator 1790603

Acoustics Research Laboratories

Ngara Noise Logger 87807F

All equipment was checked for calibration before and after each set of measurements with no significant drift occurring.

The average noise levels for the site are presented in Table 2.

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Table 2: Adjusted measured long term noise levels at proposed Swan Street facade, dB(A) re 200'a.

Noise level descriptor Noise level, dB(A)

LAeq,I5hr 65 — 67

LAeq,9hr 62 — 63

Peak LAl 0,10min 76

The LAeq,15hr is the logarithmic average of the measured noise levels between 07:00 hrs-22:00 hrs (7:00 am-10:00 pm), and the LAeq,9hr is the logarithmic average of the measured noise levels between 22:00 hrs-07:00 hrs (10:00 pm-7:00 am).

The peak LAio,iomin is the maximum LAID recorded over the measurement period. This level has been used for the design of the facades, and is broadly comparable with the previous noise levels measured by Amp in January 2015 (detailed in Arup's Acoustic Assessment reports dated 15 July 2016).

Graphed noise level data is presented in Appendix A.

Acoustic Recommendations to Satisfy Planning Permit Condition 9(a)

Traffic noise in habitable spaces in the proposed development shall be limited to the noise levels recommended in AS2107:20001. An extract of the recommended noise levels applicable to the proposed development are presented in Table 3.

Table 3: Recommended design sound levels for different areas of occupancy in buildings (from Table 1 of AS2107:2000)

Type of occupancy/activity Recommended design sound level, Leg, dB(A)



Living areas 35 45


The glazing along the southern facade of the proposed development (facing Swan Street) has been designed to limit traffic noise intrusion to the levels shown in Table 3. This is in line with Condition 9(a) of the Planning Permit.

Sleeping Areas

In order to limit traffic noise intrusion into sleeping areas along the Swan Street facade, the following glazing is recommended:

• Levels 1 to 4: 10 mm thick laminated glass, 12 mm (minimum) air gap, 6 mm thick float glass

• Level 5: 6 mm thick float glass, 12 mm (minimum) air gap, 6 mm thick float glass OR One layer of 10 mm thick laminated glass

1 AS2107-2000 Acoustics - Recommended design sound levels and reverberation times for building interiors

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Li ing Areas

In order to limit traffic noise intrusion into living areas along the Swan Street facade, the following glazing is recommended:

• 6 mm thick float glass, 12 mm (minimum) air gap, 6 mm thick float glass OR One layer of 10 mm thick laminated glass

Any operable windows shall be constructed with a standard of seal that shall maintain the specified sound reduction performance throughout the design life of the glazing.

Double glazing in the form of 6 mm thick float glass, 12 mm (minimum) air gap, 6 mm float glass shall be included for all bedrooms along the northern elevation of the subject site and above the café on the eastern elevation along Cutter Street.

Acoustic Recommendations to Satisfy Planning Permit Condition 9(b)

In order to control noise and vibration from the car stacker, resilient mounts shall be used for any mechanical connections between the car stacker and the building structure. The resilient mounts may be elastomeric pads, springs or a combination thereof depending on connection locations. The exact type of resilient mounts shall be developed with the car stacker supplier.

Amp has had preliminary discussions with the car stacker manufacturer, and in the experience of the manufacturer, and Amp, noise and vibration from car stackers have not previously been an issue.

All walls between commercial spaces and residential units shall have an acoustic rating of at least Rw50. The wall shall be constructed as shown in Table 4 of Amp's Acoustic Assessment dated 15 July 2016.

The maximum sound level at 1 m from any plant in the first basement (i.e. all plant associated with car stackers and electric gates) shall be Lmax 75 dB(A). This will result in a noise level of less than Lmax 40 dB(A) in the bedrooms.

We trust that this information answers your queries. Please do not hesitate to contact us should you require any further information.

Yours sincerely

Frank Butera Acoustic Consultant

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cc James Monahan Mhairi Riddet

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429 swan st pty ltd 16 - 26 farmer street, richmond ... · • roof top terraces ... distance...

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