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Attachment 6 - Acoustic Report (Updated) 20.08.2020 · OPW20/0145
MATTHEW PALAVIDIS
VICTOR FATTORETTO
MATTHEW SHIELDS
Noosa Civic
Noise Impact Assessment
BRISBANE ABN 11 068 954 343
Level 1 www.acousticlogic.com.au
82 Arthur Street
FORTITUDE VALLEY QLD 4006
(07) 3211 5591
The information in this document is the property of Acoustic Logic Consultancy Pty Ltd 11 068 954 343 and shall be returned on
demand. It is issued on the condition that, except with our written permission, it must not be reproduced, copied or communicated
to any other party nor be used for any purpose other than that stated in particular enquiry, order or contract with which it is issued.
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Project ID 20191414.2
Document Title Noise Impact Assessment
Attention To Stockwell Development Group Pty Ltd
Attn:Harrison Hurst
Revision Date Document Reference Prepared By Checked By Approved
By
0 24/07/2020 20191414.2/2407A/R0/OB OB
1 26/08/2020 20191414.2/2608A/R1/OB OB TS
2 27/08/2020 20191414.2/2708A/R2/OB OB OB
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TABLE OF CONTENTS 1 INTRODUCTION.................................................................................................................. 4 2 SITE DESCRIPTION.............................................................................................................. 5 3 NOISE TARGETS .................................................................................................................. 6 4 NOISE MEASUREMENTS..................................................................................................... 7 4.1 MEASUREMENT LOCATIONS ...................................................................................... 7 4.2 MEASURED NOISE LEVELS .......................................................................................... 8 4.2.1 Unattended Measurements Results .............................................................................................. 8 4.2.2 Attended Measurement Results...................................................................................................... 9 5 NOISE SOURCES/IMPACTS............................................................................................... 10 5.1 LOADING DOCKS ....................................................................................................... 10 5.1.1 Trolley Collection ................................................................................................................................10 5.1.2 Delivery Trucks.....................................................................................................................................10 5.1.3 Mechanical Plant .................................................................................................................................10 5.1.4 Compactor.............................................................................................................................................10 5.2 NOISE CALCULATION ................................................................................................ 10 6 RECOMMENDATIONS ...................................................................................................... 25 6.1 MANAGEMENT CONTROLS ...................................................................................... 25 6.2 ACOUSTIC BARRIER................................................................................................... 25 6.3 RESIDENTIAL BUILDINGS FAÇADE CONSTRUCTION ............................................... 26 6.4 MECHANICAL PLANT NOISE LEVELS ........................................................................ 27 7 CONCLUSION.................................................................................................................... 28 I:\Jobs\2019\20191414\20191414.2\20200827OBA_R2_Noise_Impact_Assessment.docx 3
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1 INTRODUCTION
Acoustic Logic consultancy (ALC) have been engaged to conduct an assessment of major noise source
impacts from the Noosa Civic Shopping Centre onto proposed adjacent residential development.
The report is in response to the Council’s request:
1. Prepare and submit to Council for approval with and Operational Works application a revised acoustic
report which includes measures to mitigate noise generated from the shopping centre operations and
equipment, including deliveries, truck movements and rubbish collection. This report should consider
attenuation at the noise source as well as a noise barrier along the shared boundary of Lots 19 and
21. All measures to mitigate noise must be implemented prior the submission of the subdivision plan
to Council.
Noise attenuation is required to achieve the following acoustic quality for potential residential uses on
Lots 17-19. The measurement location must include receivers being places at the closest point to the
future residential and office buildings.
Criteria (measured at the receptor) dB(A)
Sensitive receptor Time of Day
LAeq,adj,1hr 1 LA1,adj,1hr2
Daytime and evening
35 45
(habitable spaces)
Dwelling (indoors)
Night-time (sleeping
30 40
areas)
1
Acoustic descriptor/noise target for continuous noise sources (eg. Mechanical plant).
2
Acoustic descriptor/noise target for transient impacts arising from loading dock activities (e.g. truck
movements, reversing alarms, compactor, trolley etc.)
The purpose of this assessment is the following:
• Establish the predicted intrusive noise levels at the proposed subdivision site on Hofmann Road for
lots 17-21.
• Provide acoustic attenuation recommendations to meet the indoor acoustic criteria set by Noosa
Shire Council. These are applied at the source, boundary and receiver.
This report includes attended and unattended noise measurements from the previous ALC acoustic report
(ref: 20191414.1/1501A/R2/SS, dated 15/01/2020).
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2 SITE DESCRIPTION
The site comprising the proposed lots 17, 18, 19, and 21 is bound by the following:
• North, North-east - Noosa Civic Shopping Precinct
• West – Commercial precinct
• South - Townhouses across Hofmann Drive.
The loading docks are indicated in Figure 1 below.
LD 1
Woolworths
LD 2
W
LD 3
Big W
Site (Lots 17,18,19,21)
Noosa Civic Loading Docks
Figure 1 – Site Location
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3 NOISE TARGETS
In accordance to the Information Request, Noosa Shire Council has requested that the development be
assessed in accordance with the criteria below.
Table 1 – EPP Noise 2008, Schedule 1 - Acoustic Quality Objectives for Residential
Sensitive Time of Day Criteria (measured at the receptor)
receptor dB(A)
LAeq,adj,1hr1 LA1,adj,1hr2
daytime and evening 35 45
dwelling (indoors) (habitable spaces)
night-time (sleeping areas) 30 40
1
Acoustic descriptor/noise target for continuous noise sources (e.g. mechanical plant).
2
Acoustic descriptor/noise target for transient impacts arising from loading dock activities (e.g. truck
movements, reversing alarms, compactor, trolley etc.).
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4 NOISE MEASUREMENTS
Measured noise levels are obtained from the previous ALC acoustic report (ref: 20191414.1/1501A/R2/SS,
dated 15/01/2020) and are presented below.
4.1 MEASUREMENT LOCATIONS
Monitor locations were selected upon accessibility and accuracy in considering ambient conditions whilst
capturing dominant noise sources around site.
Mech. plant deck
Exhaust/ Mech. plant
3
NGARA
6
4
2 1
RION NL 42
5
N
Unattended Attended
Figure 2- Noise Measurement Locations
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4.2 MEASURED NOISE LEVELS 4.2.1 Unattended Measurements Results Table 2 -NGARA Measurement Summary Date Average Acoustic Descriptor, dB(A) leq Loo Lio Li D* E* N* D* E* N* D* E* N* | D* E* N* 20/11/19 59 48 48 57 45 42 60 50 50 61 53 53 21/11/19 57 52 50 55 50 45 59 54 51 61 56 54 22/11/19 58 48 48 56 44 43 59 50 49 61 53 53 23/11/19 58 52 48 56 46 43 59 54 49 60 56 53 24/11/19 58 45 49 56 42 43 59 46 50 60 48 54 25/11/19 59 49 50 57 45 46 60 50 51 62 53 54 26/11/19 59 48 48 57 46 44 60 50 50 62 52 54 27/11/19 59 57 61 63 AVERAGE 58 49 49 56 45 44 60 50 50 | 61 53 54 * D- Day (7:00-18:00), E- Evening (18:00 — 22:00), N-Night (22:00-7:00) I:\Jobs\2019\20191414\20191414.2\202008270BA_R2_Noise_Impact_Assessment.docx
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Table 3 -Rion NL42 Measurement Summary Date Average Acoustic Descriptor, dB(A) Leq Loo Lio Li De) e& | N* | D* | BE | N* | D* |] E* | N* ] D* | EF | Ne 20/11/19 54 48 44 51 46 37 56 50 | 46 66 56 59 21/11/19 52 49 44 49 46 36 53 50 | 46 66 59 61 22/11/19 52 49 44 49 46 36 53 50 | 45 66 60 61 23/11/19 52 48 44 49 46 35 54 | 49 | 46 66 58 60 24/11/19 53 48 43 49 45 36 56 50 | 45 67 58 61 25/11/19 52 49 43 49 46 37 54 51 45 66 61 61 26/11/19 57 51 44 52 47 37 59 54 | 46 70 59 60 27/11/19 54 51 56 67 AVERAGE 53 49 44 50 46 36 55 51 46 | 67 | 59 | 60 * D- Day (7:00-18:00), E- Evening (18:00 — 22:00), N-Night (22:00-7:00) 4.2.2 Attended Measurement Results Table 4 -Loading Dock Activity, Attended Measurements Location’ Noise Source Acoustic Descriptor, dB(A) Leq Linax Lpeak 1 Mechanical plant @ 25 57 62 78 metres 2 Reversing signal from trolley 69 76 83 collection truck 3 Mechanical plant noise 71 73 85 through exhaust/grille @ 1 metre away ' Refer to Figure 2 for location on map. I:\Jobs\2019\20191414\20191414.2\202008270BA_R2_Noise_Impact_Assessment.docx
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5 NOISE SOURCES/IMPACTS
The following sections outline current major noise sources that were identified upon the previous site visit
to have potential impact on site.
5.1 LOADING DOCKS
5.1.1 Trolley Collection
During time on site, it was observed that trolley activity is a regular occurrence across both loading docks.
Noise level that was measured in relation to noise produced by trolley activity was 69 dB(A) L eq. Trolley
collections is understood to only occur during day and evening periods (i.e. 7am to 10pm) which is also
considered in this assessment.
5.1.2 Delivery Trucks
It was observed that small to medium sized delivery trucks were present within the loading docks during
time of site visit. We note that the loading dock operational hours as per installed signage start at 5AM
(based on Woolworths, unknown for others) and can run up to 10PM. No idling of trucks was assumed within
the sites (including the refrigeration trucks) and such restrictions should be included if not yet followed (e.g.
signs installed at the entry and along the boundaries of the shopping centre loading docks.
5.1.3 Mechanical Plant
The following mechanical plant was observed and noted in Figure 2.
• Eastern Loading Dock Plant deck above loading dock ‘5’ emitting a calculated sound power level
of 93dB(A).
• Kitchen exhaust sound power level of 99dB(A).
• Western Loading Dock - Plant room/exhaust adjacent loading dock ‘2’ were measured and
calculated to have a sound power level 90 dB(A).
Other plant is generally located on the rooftop of the shopping centre and therefore, providing significant
noise shielding. In any case, the assessment is based on a sound power level of 90dB(A)
At night, our predictions are based on kitchen exhaust fan being turned off together with other plant
adjacent to loading docks.
No other mechanical plant was considered and located during site inspections. In case of additional other
plant, these must operate to ensure that the L 90 background noise levels at the future residential buildings
are not exceeded.
5.1.4 Compactor
A compactor was noticed located by the ‘Big W’ loading dock 3 with an assumed Lmax sound power level of
100 dB(A). Compactor operation has been excluded from night time assessments as it should only operate
between the hours of 7am and 6pm.
5.2 NOISE CALCULATION
Measured noise levels and mechanical plant noise data and operational conditions highlighted in the
previous section have been used to calculate the predicted intrusive noise levels at the sensitive noise
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receptors (lots 17, 18, 19, and 21) based on the expected building layouts of the Lots as described below
and indicated in the figures below.
A SoundPLANTM computer model was developed for these noise sources as described activities and used to
predict noise emissions from the compactor and loading docks to the sensitive receptors (lots 17, 18, 19,
and 21). Predictions were made for the following scenarios:
• All loading docks and compactor operating concurrently, representing the worst-case scenario
for day time noise emissions.
• All loading docks operating concurrently, representing the worst-case scenario for evening and
night time noise emissions.
• Only the compactor operating;
• Mechanical plant operational scenarios as described in this report.
The analysis was conducted based on the following assumptions:
• Mechanical plant decks indicated in Figure 2 have a sound power level of 90 dB(A) Leq each.
• Kitchen exhaust fan indicated in Figure 2 has a sound power level of 99dB(A) Leq;
• Loading dock trucks have a sound power level of 101 dB(A) L max. No idling of trucks was assumed
within the sites (including the refrigeration trucks) and such restrictions should be included if
not yet followed (e.g. signs installed at the entry and along the boundaries of the shopping
centre loading docks.
• Compactor indicated in Figure 2 has a sound power level of 100dB(A) Lmax.
• Kitchen exhaust fans being turned off between 10pm and 7am and other plant adjacent and
within loading docks not operational after 10pm and prior to 7am.
• Compactor is not operational between 6pm and 7am;
• No trolley collection between 10pm and 7am.
• The presence of a 6m wide plantation buffer between the northern boundary of the residential
lots and the shopping centre paved loading dock and entry boundary.
• Façade line of proposed residential development approximately 8 metres from loading dock
boundary (refer to the closest sensitive receiver buildings used in calculations indicated in figure
below)
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Assumed receiver
building locations
for Lots 17,18,19
and 21.
•
• Assessed habitable space taken as a typical bedroom with a floor area of 11m2, and volume of
27m3.
• Typical façade/glazing area of typical bedroom – 7.7m2, with the assumed typical layout
presented below
• Assessed typical living room with a floor area of 20m2, and volume of 50m3 with total façade
glazing area 8m2, with the assumed typical layout presented below;
• 1.8m high acoustic barrier along the boundary of lots 19, and 21 as indicated in Section 6.
Other configurations and activities/plant must be re-assessed during detailed design review of the
residential development to ensure that indoor noise limits can be achieved.
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Glazing 2.1m x 1.5m
Glazing 3.0m x 0.5m Glazing 3.0m x 0.5m
Glazing 3.0m x 1.2m
Glazing 3.0m x 1.2m Balcony Balcony
Bedroom Bedroom
Living Room Living Room
Unit 1 Unit 2
Façade Wall
Internal Partition Wall
Figure 3- Assumed Typical Unit Layout
Figure 4 to Figure 6 present the SoundPLANTM model of the day time period emissions for all loading docks
and the compactor operating concurrently. To assess compliance against the LA1,adj,1hr noise criteria for the
worst-case conditions, the model presents the Lmax dB(A) noise levels. The model includes the existing 1.0m
high wall in the loading area, as well as the proposed 1.8m high acoustic barrier along the boundary of the
sensitive receivers (lots 19, and 21 as indicated in Section 6).
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Figure 4- SoundPLANTM Day Time Modelling of All Loading Docks and Compactor – Ground Level
Figure 5- SoundPLANTM Day Time Modelling of All Loading Docks and Compactor – Level 1
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Figure 6- SoundPLANTM Day Time Modelling of All Loading Docks and Compactor – Level 2 I:\Jobs\2019\20191414\20191414.2\20200827OBA_R2_Noise_Impact_Assessment.docx 15
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Figure 7 to Figure 9 present the SoundPLANTM model of the evening/night time period emissions for all
loading docks operating (note: loading dock not operational after 10pm and before 5am and no idling of
any truck allowed, incl. refrigeration trucks).
Figure 7- SoundPLANTM Evening/Night Time Modelling of Loading Docks Only – Ground Level
Figure 8- SoundPLANTM Evening/Night Time Modelling of Loading Docks Only – Level 1
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Figure 9- SoundPLANTM Evening/Night Time Modelling of Loading Docks Only – Level 2
Figure 10 to Figure 12 present the SoundPLANTM model of the day time period emissions for only the
compactor operating.
Figure 10- SoundPLANTM Day Time Modelling of Compactor Only – Ground Level
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Figure 11- SoundPLANTM Day Time Modelling of Compactor Only – Level 1
Figure 12- SoundPLANTM Day and Evening Time Modelling of Compactor Only – Level 2
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Figure 13 and Figure 14 present the SoundPLANTM model mechanical plant day and evening time period emissions. Figure 13- SoundPLANTM Day and Evening Time Modelling of Mechanical Plant – Lots 17 and 18 I:\Jobs\2019\20191414\20191414.2\20200827OBA_R2_Noise_Impact_Assessment.docx 19
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Figure 14- SoundPLANTM Day and Evening Time Modelling of Mechanical Plant – Lots 17, 18 and 19
Figure 15- SoundPLANTM Day and Evening Time Modelling of Mechanical Plant – Lot 21
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Figure 16 to Figure 18 present the SoundPLANTM model mechanical plant night time period emissions (note:
kitchen exhaust and any mechanical plant adjacent to loading docks or any other major plant turned off).
Figure 16- SoundPLANTM Night Time Modelling of Mechanical Plant – Ground Level
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Figure 17- SoundPLANTM Night Time Modelling of Mechanical Plant – Level 1
Figure 18- SoundPLANTM Night Time Modelling of Mechanical Plant – Level 2
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Table 5 – Predicted Shopping Centre Noise Impacts at the Proposed Residential Lots
Predicted Incident Noise Level Acoustic
Receiver1 Time
at Facade dB(A) Treatment
Internal
Compact. Mech.
Required
Noise Level
LA12 Plant3 to Achieve
Loading Criteria
LAeq Indoor
Dock, LA1 dB(A)
Noise
Limit4
Day 52 28 52 45 LA1,adj,1hr
Lot 17 Ground Evening N/A 35 LAeq,adj,1hr
Type A
level 41 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 57 28 56 45 LA1,adj,1hr Type A
Evening N/A 35 LAeq,adj,1hr
Lot 17 Level 1
45 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 60 29 57 45 LA1,adj,1hr Type A
Evening N/A 35 LAeq,adj,1hr
Lot 17 Level 2
48 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 46 37 51 45 LA1,adj,1hr Acoustic
35 LAeq,adj,1hr Seals to
Evening N/A
Lot 18 Ground windows,
level 43 Non glazed
40 LA1,adj,1hr
Night wall to Type
30 LAeq,adj,1hr
A
Day 47 37 57 45 LA1,adj,1hr
Evening N/A 35 LAeq,adj,1hr
Lot 18 Level 1 Type A
45 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 47 41 57 45 LA1,adj,1hr
Evening N/A 35 LAeq,adj,1hr
Lot 18 Level 2 Type A
46 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 52 55 53 45 LA1,adj,1hr Type A
Lot 19 Ground Evening N/A 35 LAeq,adj,1hr
level
39 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Lot 19 Level 1 Day 61 63 56 45 LA1,adj,1hr Type B
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Predicted Incident Noise Level Acoustic
Receiver1 Time
at Facade dB(A) Treatment
Internal
Compact. Mech.
Required
Noise Level
LA12 Plant3 to Achieve
Loading Criteria
LAeq Indoor
Dock, LA1 dB(A)
Noise
Limit4
Evening N/A 35 LAeq,adj,1hr
44 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 62 63 56 45 LA1,adj,1hr Type B
Evening N/A 35 LAeq,adj,1hr
Lot 19 Level 2
45 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 66 64 58 45 LA1,adj,1hr
Lot 21 Ground Evening N/A 35 LAeq,adj,1hr
Type B
level
38 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 70 69 61 45 LA1,adj,1hr
Evening N/A 35 LAeq,adj,1hr
Lot 21 level 1 Type C
45 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
Day 70 69 62 45 LA1,adj,1hr
Evening N/A 35 LAeq,adj,1hr
Lot 21 level 2 Type C
47 40 LA1,adj,1hr
Night
30 LAeq,adj,1hr
1
Refer to Figure 2 for location on map
2
Compactor and associated plant only operational between 7am and 6pm. On that basis, at other times
noise impact is N/A – not applicable
3
Exhaust fan and other plant adjacent to loading docks only operational between 7am and 10pm.
4
Based on most exposed rooms and building locations as per Figure 4 The rooms assume typical bedroom
and living room dimensions with bedroom glazed façade area of 7.4m2. Subject to final room and building
layouts and the shielding offered by other buildings, the façade acoustic treatment requirements may differ
and would need to be reviewed after plans are finalised.
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6 RECOMMENDATIONS
6.1 MANAGEMENT CONTROLS
It is recommended that operation of the compactor to be limited to the day time period only (7am – 6pm)
and not use kitchen exhaust and other mechanical plant adjacent to the loading docks between 10pm and
7am.
Furthermore, trolley collection must not occur after 10pm and prior to 7am.
Loading dock operation between 5am and 10pm has been considered, however, no idling of trucks should
occur within the sites at any time (including the refrigeration trucks) and such restrictions should be included
if not yet followed (e.g. signs installed at the entry and along the boundaries of the shopping centre loading
docks).
6.2 ACOUSTIC BARRIER
An acoustic barrier is recommended along the northern boundary of lots 21 and 19 adjacent to the
blockwork loading dock wall as shown in Figure 19. The height of the barrier must be a minimum of 1.8
metres above the loading dock ground level or top of the existing loading dock blockwork wall whichever
is higher, with a minimum surface density of 12 kg/m2. This assumes that the pad heights of the residential
buildings do not exceed that of the loading dock concrete pad level.
Figure 19- Acoustic Barrier
Acoustic barrier 1.8m high above loading dock ground level or top of loading dock blockwork wall,
whichever is higher
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6.3 RESIDENTIAL BUILDINGS FAÇADE CONSTRUCTION
In addition to the management controls, to achieve the indoor noise levels within the considered habitable
areas (refer to Section 5.2), the following minimum façade construction is proposed. Refer to Table 5 for
specific locations where each Façade Type applies.
Table 6 – Façade Construction Recommendations
Type Glazing Systems Façade Wall
A Nominal openable glazing system - Rw33 Masonry construction or Cladded
nominally with 6.38mm lam glass and seals façade (9mm fibre cement sheet)
on 90mm timber studs - cavity
insulation (e.g. 75mm thick
11kg/m3 glasswool) – min 10mm
thick plasterboard internally
B Nominal openable glazing system - Rw35 Masonry construction or Cladded
nominally with 10.38mm lam glass and façade (9mm fibre cement sheet)
acoustic seals on 90mm timber studs - cavity
insulation (e.g. 75mm thick
11kg/m3 glasswool) – min 13mm
thick Fyrchek plasterboard
internally
C Nominal openable glazing system - Rw37 Masonry construction or Cladded
nominally with 10.76mm lam glass and façade (9mm fibre cement sheet)
acoustic seals on 90mm timber studs - cavity
insulation (e.g. 75mm thick
11kg/m3 glasswool) – min 2 layers
of 13mm thick Fyrchek
plasterboard internally
In the case where any of the apartments/habitable areas are elevated with the floor exposed to noise from
the shopping centre, the floor is assumed to be of concrete construction (nominally 150mm thick). Other
construction details may be acceptable but must be reviewed and approved by an acoustic consultant in
order to achieve indoor noise levels of finalised building layouts.
The minimum roof construction must be of concrete or alternative colorbond with Anticon 145 and
plasterboard ceiling with 75mm thick glasswool (11kg/m3) overlay.
Where building layouts and locations or habitable areas differ from what has been considered, additional
assessment is required.
Buildings located further from the loading docks in comparison to the ones considered in this report must
be constructed based on Type A construction as a minimum.
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6.4 MECHANICAL PLANT NOISE LEVELS
In order to achieve compliance with the continuous noise criteria outlined in Table 1, the operational
conditions must follow the recommendations in Section 5.
Exhaust/ Mech. plant A Mech. plant deck C
Mech Plant Adjacent
to Loading Docks
B
Mech Plant Adjacent
to Loading Docks
N
Figure 20- Mechanical Plant Locations
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7 CONCLUSION ALC have conducted a noise impact assessment of the loading dock activities and mechanical plant located at Noosa Civic Shopping Centre, 28 Eenie Creek Road, Noosaville. The purpose of the assessment was to determine the predicted intrusive noise levels at the proposed subdivision site on Hofmann Road for lots 17, 18, 19, and 21. Previous noise monitoring data conducted by ALC (ref: 20191414.1/1501A/R2/SS, dated 15/01/2020) has assisted in establishing the acoustic environment associated to the subject site (Table 1 and 2). Provided the recommendations in Section 6 are implemented, the development is predicted to achieve compliance with the Noosa Shire Council assessment criteria. We trust this information is satisfactory. Please contact us should you have any further queries. Yours faithfully, Acoustic Logic Consultancy Pty Ltd Omar Busaidi I:\Jobs\2019\20191414\20191414.2\20200827OBA_R2_Noise_Impact_Assessment.docx 28
Used in these records
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