Canterbury Road, Campsie Acoustic Impact Assessment for DA Submission

Transcription

1 Report No. 20C TRP th August 2011 Acoustics Vibration Air Quality Mechanical & Structural Systems Fluid Mechanics Sustainability Building Technologies

2 DOCUMENT CONTROL REPORT NO: LIBRARY CODE: 20C TRP A 39 PREPARED FOR: PREPARED BY: Lanscon Pty Ltd Vipac Engineers & Scientists Ltd Shop 5/21 Regent Street 2 Sirius Rd Redfern NSW 2016 Lane Cove NSW 2066 AUSTRALIA Contact: Les Touma e: Sydney@vipac.com.au Phone: t: Fax : f: AUTHOR: Jimmy Ameli Date: 8 th August 2011 Acoustics Engineer REVIEWED BY: Anthony Cano Date: 8 th August 2011 Project Engineer APPROVED BY: REVISION HISTORY: Fu Siong Hie Date: 8 th August 2011 Consulting Engineer Revision No. Date Issued: Reason/Comments: DISTRIBUTION: th June th June th August 2011 Draft Issue Initial issue, revised drawing list Revised drawings Copy No. 2 Location 1 Project 2 Uncontrolled Copy Client (PDF Format) KEYWORDS: Campsie, Canterbury Road, Acoustic Assessment NOTE: This is a controlled document within the document control system. If revised, it must be marked SUPERSEDED and returned to the VIPAC QA Representative. Ref: 20C TRP th August 2011 Page 2 of 22 Commercial-In-Confidence

3 This document contains commercial, conceptual and engineering information which is proprietary to VIPAC Engineers & Scientists Ltd. We specifically state that inclusion of this information does not grant the Client any license to use the information without VIPAC's written permission. We further require that the information not be divulged to a third party without our written consent. EXECUTIVE SUMMARY Vipac Engineers & Scientists Ltd. (VIPAC) has been commissioned by Lanscon Pty Ltd to assess the acoustic interaction of the proposed development at Canterbury Road, Campsie with the surrounding environment. An acoustic assessment of the proposed development has been carried out in accordance with the recommendations and guidelines set out in Canterbury Council s DCP, Department of Environment, Climate Change and Water (DECCW) Industrial Noise Policy (INP), Australian Standard AS/NZS 2107:2000 and DoP Regulation 102 of the State Environmental Planning Policy (Infrastructure) Noise surveys have been conducted to establish the existing ambient and traffic noise levels in the area. The ingress of traffic noise has been determined. An acoustic glazing schedule for the site is detailed in Section 5.2 and Appendix B. Limiting criteria for mechanical plant/equipment noise emission have been determined based on DECCW INP requirements. The mechanical services consultants should consider these limits when selecting/designing the mechanical plant. Once the plant and equipment selection has been finalised, a separate acoustic assessment should be conducted, such as at Construction Certificate Stage. At this later juncture the design and specification of the necessary treatments may be carried out to control the noise emission and to ensure compliance with the criteria specified. Section 3.5 details the National Construction Code (NCC 2011) requirements for the isolation of walls and floors. Noise within the basement car park is to comply with the recommended internal noise levels as given in Section 5.3. Provided the recommendations in this report are implemented, the proposed mixed use development is predicted to comply with the acoustic requirements of Canterbury Council and/or the relevant Australian standards and guidelines. Ref: 20C TRP th August 2011 Page 3 of 22 Commercial-In-Confidence

4 TABLE OF CONTENTS 1 INTRODUCTION 6 2 SITE DETAILS 6 3 NOISE CRITERIA CANTERBURY COUNCIL DCP STATE ENVIRONMENTAL PLANNING POLICY (INFRASTRUCTURE) REG CRTIERIA FOR INTERNAL NOISE LEVELS NSW DECCW INDUSTRIAL NOISE POLICY NCC SOUND INSULATION PROVISIONS BETWEEN PREMISES Sound Isolation of Pumps Doors ENVIRONMENTAL NOISE SURVEY METHODOLOGY INSTRUMENTATION NOISE MONITORING RESULTS ROAD TRAFFIC NOISE MEASUREMENT RESULTS ACOUSTIC ASSESSMENT AND RECOMMENDATIONS MECHANICAL SERVICES GLAZING REQUIREMENTS External walls Glazing for noise intrusion General Remarks BASEMENT CAR PARK NOISE...13 Ref: 20C TRP th August 2011 Page 4 of 22 Commercial-In-Confidence

5 6 GUIDELINES FOR CONSTRUCTION NOISE 13 7 CONCLUSION 15 APPENDIX A: SITE PLAN 16 APPENDIX B: ARCHITECTURAL DRAWINGS 17 APPENDIX C: GLOSSARY OF ACOUSTIC TERMS 18 APPENDIX D: GLAZING SCHEDULE 20 LIST OF FIGURES & TABLES TABLE 1: AS/NZS 2107: RECOMMENDED DESIGN SOUND LEVELS FOR BUILDING INTERIORS...7 TABLE 2: PART F5 OF NCC REQUIREMENTS...8 TABLE 3: MEASUREMENT RESULTS AND NOISE GOALS...11 TABLE 4: SUMMARY OF TRAFFIC NOISE MEASUREMENT LEVELS...11 TABLE 5: NOISE AT RESIDENCES USING QUANTITATIVE ASSESSMENT...14 Ref: 20C TRP th August 2011 Page 5 of 22 Commercial-In-Confidence

6 1 INTRODUCTION Vipac Engineers & Scientists Ltd. (VIPAC) has been commissioned by Lanscon Pty Ltd to assess the acoustic interaction of the proposed mixed-use commercial/residential development at with the surrounding environment. The proposed mixed-use development will comprise: Basement car parks on 2 levels. Commercial spaces on the lower and upper ground levels. Residential units on five levels. 2 SITE DETAILS The development is located on Canterbury Road. The site is bounded by Canterbury Road on the north, Troy Street on the east, Charlotte Street on the west and residential properties on the south. Site location is shown in Appendix A. The nearest noise sensitive receivers, which have potential for noise impact by this development, are the residential building across the south boundary. 3 NOISE CRITERIA The following standards and guidelines are applicable to this project: City of Canterbury Council DCP 13 on Multiple Unit Development acoustic requirements NSW DECCW Industrial Noise Policy (DECCW INP). NSW DECCW The Interim Construction Noise Guideline. DoP Regulation 102 of the State Environmental Planning Policy (Infrastructure) National Construction Code (NCC) 2011 Australian standard AS/NZS : Acoustics Recommended design sound levels and reverberation times for building interiors. Australian standard AS : Acoustics - Description and measurement of environmental noise - General procedures. The requirements of each are summarised as follows: Ref: 20C TRP th August 2011 Page 6 of 22

7 3.1 CANTERBURY COUNCIL DCP Section 12 of DCP No 13 of Canterbury Council on Multiple Unit Development requirements on noise are mainly on the layout of the buildings and spaces. The DCP does not introduce any specific criteria or standards, therefore we would use the relevant Australian standards/guidelines in the assessment 3.2 STATE ENVIRONMENTAL PLANNING POLICY (INFRASTRUCTURE) REG 102 Where a development is adjacent to a road corridor with an annual average daily traffic volume of more than 40,000 vehicles Regulation 102 of the SEPP requires that the consent authority must not grant consent to the development unless it is satisfied that appropriate measures will be taken to ensure that the following L Aeq levels are not exceeded: In any bedroom in the building-35 db(a) at any time between 10 pm and 7 am, Anywhere else in the building (other than a garage, kitchen, bathroom or hallway), -40 db(a) at any time. 3.3 CRTIERIA FOR INTERNAL NOISE LEVELS In terms of internal noise levels for residential and commercial occupancies subjected to outside noise sources, the recommended indoor design levels specified in Australian Standard 2107:2000 are considered. Table 1 below summarises the relevant internal sound levels. Table 1: AS/NZS 2107: Recommended Design Sound Levels for building interiors Type of occupancy/activity Recommended design sound level L eq db(a) Satisfactory Maximum Houses and apartments near major road Work areas Commercial & shop buildings General office area Small retail stores (general) Public spaces (eg speciality shops) Enclosed car parks Ref: 20C TRP th August 2011 Page 7 of 22

8 3.4 NSW DECCW INDUSTRIAL NOISE POLICY To control noise from plant or equipment at the development the noise emission levels from the site should be restricted to criteria determined through methodology outlined in the NSW Department of Environment, Climate Change and Water (DECCW) Industrial Noise Policy. The procedures detailed in DECCW Industrial Noise Policy has two requirements that must be met, namely: that the noise source not be intrusive ; and also that the amenity of the nearby land be preserved. This policy sets out two separate noise criteria designed to ensure developments meet environmental noise objectives. The first criterion accounts for intrusive noise and the second criterion applies to protection of amenity of particular land uses. The new development is assessed by applying both the amenity and intrusiveness criteria to the situation and adopting the more stringent of the two. This becomes the project specific noise levels. Applying the most stringent requirement as the Project Specific Noise Levels ensures that both intrusive noise is limited and the amenity is protected. 3.5 NCC SOUND INSULATION PROVISIONS BETWEEN PREMISES It is necessary to safeguard future occupants from illness or loss of amenity as a result of undue sound being transmitted between adjoining sole-occupancy premises and also from common spaces into sole-occupancy premises. NCC Deemed to Satisfy sound insulation requirements for intertenancy wall of Volume 1 for Class 2 building are summarised in the following Table 2. A waste pipe or other penetration that is embedded in or passes through a floor, serves or passes through more than one apartment must be separated from the rooms of any sole-occupancy unit by construction of a partition with the Rw+ Ctr ratings specified in Table 2. Table 2: Part F5 of NCC Requirements SEPARATING PARTITIONS Minimum NCC Requirement WALLS AND FLOORS Walls between sole occupancy Rw + Ctr 50 Walls between apartments and stairway, public corridors, public lobby or the like Walls between wet areas (bathrooms, sanitary compartment, laundry or kitchen) and a habitable room (other than kitchen) in adjoining apartments Walls between a plant room or lift shaft and a sole occupancy unit Rw 50 Rw + Ctr 50 & of discontinuous construction Rw 50 & of discontinuous construction Ref: 20C TRP th August 2011 Page 8 of 22

9 SEPARATING PARTITIONS Minimum NCC Requirement Doors assemblies located in a wall between an apartment and a stairway, public corridor, public lobby or the like Floors between sole occupancy units or between a sole occupancy unit and plant room, lift shaft, stairway, public corridor, public lobby or the like. SERVICES (a) a duct, soil, waste or water supply pipe including a duct or pipe that is located in a wall or floor cavity serves or passes through more than one sole occupancy unit (i) if the adjacent room is a habitable room (other than a kitchen); or Rw 30 Rw + Ctr 50 & Ln,w + CI < 62 Rw + Ctr 40 (ii) if the room is a non-habitable room Rw + Ctr 25 (b) a storm water pipe passes through a sole occupancy unit (i) if the adjacent room is a habitable room (other than a kitchen); or Rw + Ctr 40 (ii) if the room is a non-habitable room Rw + Ctr 25 Note, according to the NCC requirements: 1. For the purpose of complying with the NCC 2011 sound insulation requirements, the Rw + Ctr must be determined in accordance with AS/NZS or ISO 717.1, using results from laboratory measurements. 2. Discontinuous construction means a wall system having a minimum 20mm cavity between two separate leaves with: For masonry, where wall ties are required to connect leaves, the ties are of the resilient type; and For other than masonry, there is no mechanical linkage between leaves except at the periphery. A staggered stud wall, which has a common top and bottom plate, is not considered to be discontinuous. Refer to glossary of acoustic terminology in Appendix C for definitions of the sound insulation ratings Sound Isolation of Pumps A flexible coupling must be used at the point of connection between the service pipes in a building and any circulating pump or other pump. Ref: 20C TRP th August 2011 Page 9 of 22

10 3.5.2 Doors Door assemblies located in a wall between an apartment and a stairway, public corridor, public lobby or the like, would require an Rw not less than 30, when tested in the laboratory. 4 ENVIRONMENTAL NOISE SURVEY 4.1 METHODOLOGY Unattended noise monitoring was conducted at the site over a period of 10 days between the 24 th May and 3 rd June The monitor was located at the rear of the existing property next to the south boundary. A second noise monitor was used for 24 hours and was located on the front courtyard on Canterbury Road to measure the traffic noise. The measurement locations are shown on Appendix A. All measurements conducted were in general accordance with the Australian standard AS INSTRUMENTATION Measurements were conducted using the following equipment: Larson Davis Integrating Sound Level analyser Model LD870 B, Serial Number Larson Davis Integrating Sound Level analyser Model LD812, Serial Number 0322 Larson Davis sound analyser 2900, Serial number Larson Davis Sound Level Calibrator Model CA250, Serial Number The instruments were checked for calibration immediately before and after the measurements and there was no adverse deviation between the two. The instruments carry traceable calibration certificates. The sound analysers are Type 1 and comply with the Australian standard AS1259.2: NOISE MONITORING RESULTS For noise monitoring, the noise data where adverse weather conditions prevailed was disregarded. Based on the noise data, Table 3 presents a summary of ambient noise measurements at the site and associated noise goals, which have been analysed in accordance with the DECCW Industrial Noise Policy. Values have been rounded to the nearest db. Full noise survey results are available upon request. Ref: 20C TRP th August 2011 Page 10 of 22

11 Table 3: Measurement Results and Noise Goals All Values in dba Existing Noise levels dba Operational noise goals (dba) Type Period LAeq RBL ANL 1 Amenity L Aeq,(period) Intrusiveness LAeq, (15-,inute) INP Project Specific Level Day Residential Evening Night Hence, noise from mechanical plant and equipment associated with the proposed development should not exceed the Project Specific Level criteria specified above. 4.4 ROAD TRAFFIC NOISE MEASUREMENT RESULTS Traffic noise measurements were made on site by unattended noise monitoring between 24 th and 27 th May The noise monitor was placed in the forecourt of the existing car yard at 15 m setback from the kerb. Table 4 below presents a summary of the noise measurement levels. Values were rounded to the nearest 0.5 db. Table 4: Summary of Traffic Noise measurement Levels All Values in dba Location Day Noisiest L Aeq (1 Hour) Night Noisiest L Aeq (1 Hour) Canterbury Road (15 m setback) Recommended Acceptable Noise Level from table 2.1 in the DECCW Industrial Noise Policy Ref: 20C TRP th August 2011 Page 11 of 22

12 5 ACOUSTIC ASSESSMENT AND RECOMMENDATIONS 5.1 MECHANICAL SERVICES Mechanical noise emission should be controlled in accordance with the Project Specific Noise Level criteria as shown in Table 3. At this stage, the design and selection of the plant required to service the proposed development has not been finalised therefore the possible noise impact cannot be assessed. However, the mechanical services consultant should select plant so that the total mechanical services noise does not exceed the lowest project specific noise level at the common boundary of the receiver. In general, based on previous experience with similar size developments, a number of amelioration measures can be implemented to control the noise emission. Typical amelioration measures are outlined below (not necessarily limited to}: Location of mechanical services equipment away from noise sensitive receivers. Achieving no direct line of sight path between the nearest residence and all the major mechanical equipment or exhaust fans. Installation of low noise condenser units. Installation of barriers and acoustic enclosures where the above measures do not provide sufficient attenuation. 5.2 GLAZING REQUIREMENTS Acoustic glazing is required to reduce noise impacts on occupants and should result in noise levels within such units in accordance with the AS/NZS 2107: External walls The outer walls will be constructed of double brick. This will provide an acoustic performance of R w 55 or better. Some bedrooms facing Canterbury Road have a spandrel wall of brick and glass (examples are bedroom 1 of unit 13 or bedroom 2 of unit 19). We were advised that the minimum brick area in this case is 50 %, which was used for this assessment Glazing for noise intrusion Traffic noise measured for Canterbury Road was adjusted using the CoRTN model (Calculation of Road Traffic Noise) to account for different receiver heights and distance attenuation for various units on different floors. A value of 2.5 db(a) was added to the measured levels to account for façade reflections. Calculations were performed for all Ref: 20C TRP th August 2011 Page 12 of 22

13 glazing on the potentially worst affected façade, in this case on Canterbury Road. It was assumed that all bedrooms and living rooms were carpeted. Appendix D presents the minimum glazing requirements for outer and inner glazing of the façade. This configuration will provide acoustic performance to achieve the recommended internal sound level as specified in AS/NZS 2107: General Remarks Glazing is generally the weakest component of any building façade where it would serve as a major noise transmission path, especially in cases where it has not been installed properly. Sometimes different glass configurations have the same R w ratings but they have different Sound Transmission Loss characteristics at each frequency band. Our glazing recommendations have been based on the glass performance across the octave band frequency spectrum. All Windows/doors should be well sealed (air tight) when closed with good seals such as Q- LON acoustic seals (or equivalent) around the top and bottom sliders. Special attention should be given to the balcony doors and the sliding doors to have good quality acoustic seals around them. Any air gap will significantly reduce the performance of the glazing in terms of the ability to attenuate noise. Mohair seals are not considered to be acoustic seals. All of the above assumed that the glass is properly sealed airtight. In the case of service rooms such as toilets, laundries, kitchens, gallery etc, not included in the glazing table in Appendix D, a 3 to 4mm thick windows/glazing with minimum R w of 28 is considered sufficient. 5.3 BASEMENT CAR PARK NOISE The noise level of the mechanical equipment of the car park should not exceed a level of 65 db(a) as indicated in Table 1. The sound emission of the car park exhaust fans, to the environment should comply with the Project Specific Noise Levels as shown in Table 3. 6 GUIDELINES FOR CONSTRUCTION NOISE The following guidelines for The Interim Construction Noise Guideline developed by the Department of Environment and Climate Change and Water NSW (DECCW). The Guideline presents two ways of assessing construction noise impacts the quantitative method, which is generally suited to longer-term construction, and the qualitative method, which is generally suited to short-term works such as infrastructure maintenance. Using a quantitative as described in the guideline the noise criteria as presented in Table 5 would be adopted. Ref: 20C TRP th August 2011 Page 13 of 22

14 Table 5: Noise at Residences Using Quantitative Assessment Time of day Recommended standard hours Monday to Friday 7am to 6pm Saturday 8am to 1pm No work on Sundays and Public Holidays Outside recommended hours Management level, LAeq(15min) Noise affected RBL+10dB Highly noise affected 75dBA Noise affected RBL+10dB How to apply The noise affected level represents the point above which there may be some community reaction to noise. Where the predicted or measured L Aeq (15 min) is greater than the noise affected level, the proponent should apply all feasible and reasonable work practices to meet the noise affected level. The proponent should also inform all potentially impacted residents of the nature of works to be carried out, the expected noise levels and duration, as well as contact details. The highly noise affected level represents the point above which there may be strong community reaction to noise. Where noise is above this level, the relevant authority (consent, determining or regulatory) may require respite periods by restricting the hours that the very noisy activities can occur, taking into account: 1. times identified by the community when they are less sensitive to noise (such as before and after school for works near schools, or mid-morning or midafternoon for works near residences. 2. if the community is prepared to accept a longer period of construction in exchange for restrictions on construction times. A strong justification would typically be required for works outside the recommended standard hours. The proponent should apply all feasible and reasonable work practices to meet the noise affected level. Where all feasible and reasonable practices have been applied and noise is more than 5 db(a) above the noise affected level, the Ref: 20C TRP th August 2011 Page 14 of 22

15 Time of day Management level, LAeq(15min) How to apply proponent should negotiate with the community. For guidance on negotiating agreements see section of guideline. 7 CONCLUSION An acoustic assessment of the proposed development has been carried out in accordance with the recommendations and guidelines set out in Canterbury Council s DCP, Department of Environment, Climate Change and Water (DECCW) Industrial Noise Policy and Australian Standard AS/NZS 2107:2000. Noise surveys have been conducted to establish the existing ambient and traffic noise levels in the area. The ingress of traffic noise has been determined. An acoustic glazing schedule for the site is detailed in Section 5.2 and Appendix B. Limiting criteria for mechanical plant/equipment noise emission have been determined based on DECCW Industrial Noise Policy requirements. The mechanical services consultants should use these limits when selecting/designing the mechanical plant. Once the plant and equipment selection has been finalised, a separate acoustic assessment should be conducted, such as at Construction Certificate Stage. At this later juncture the design and specification of the necessary treatments may be carried out to control the noise emission and to ensure compliance with the criteria specified. Section 3.5 details the NCC (2011) requirements for the isolation of walls and floors. Noise within the basement car park is to comply with the recommended internal noise levels as given in Section 5.3. Provided the recommendations in this report are implemented, the proposed mixed-use development is predicted to comply with the acoustic requirements of Canterbury Council and/or the relevant Australian standards and guidelines. Ref: 20C TRP th August 2011 Page 15 of 22

16 APPENDIX A: SITE PLAN Traffic Noise measurement location Ambient noise monitor location Figure A-1: Site location and Noise Survey Points Ref: 20C TRP th August 2011 Page 16 of 22

17 APPENDIX B: ARCHITECTURAL DRAWINGS The environmental assessment carried out in this report was based on the following architectural drawings provided by Mackenzie Architects. Drwg No. Date Description SK Car park Level 2 SK Car park Level 1/Lower Ground floor SK Upper ground floor plan SK st floor plan SK nd floor plan SK rd floor plan SK th floor plan SK th floor plan SK Site/roof plan SK Elevations 1 SK Elevations 2 SK Sections 1 SK Sections Ref: 20C TRP th August 2011 Page 17 of 22

18 APPENDIX C: GLOSSARY OF ACOUSTIC TERMS Decibel, db: Unit of acoustic measurement. Measurements of power, pressure and intensity. Expressed in db relative to standard reference levels. db(a): Unit of acoustic measurement weighted to approximate the sensitivity of human hearing to sound frequency.sound Pressure Level, Lp (db), of a sound: 20 times the logarithm to the base 10 of the ratio of the r.m.s. sound pressure to the reference sound pressure of 20 micro Pascals. Sound pressure level is measured using a microphone and a sound level meter, and varies with distance from the source and the environment. Sound Power Level, LW (db), of a source: 10 times the logarithm to the base 10 of the ratio of the sound power of the source to the reference sound power of 1 Pico Watt. Sound power level cannot be directly measured using a microphone. Sound power level does not change with distance. The sound power level of a machine may vary depending on the actual operating load. Ambient Sound: Of an environment: the all-encompassing sound associated with that environment, being a composite of sounds from many sources, near and far. Background noise: The underlying level of noise present in the ambient noise, excluding the noise source under investigation, when extraneous noise is removed. Percentile Level - L 90, L 10, etc: A statistical measurement giving the sound pressure level which is exceeded for the given percentile of an observation period, e.g. L90 is the level which is exceeded for 90% of a measurement period. L 90 is commonly referred to as the "background" sound level. L AEQ,T : Equivalent continuous A-weighted sound pressure level. The value of the A-weighted sound pressure level of a continuous steady sound that, within a measurement time interval T, has the same A-weighted sound energy as the actual time-varying sound. Rating Background Level RBL: Method for determining the existing background noise level which involves calculating the tenth percentile from the LA90 measurements. This value gives the Assessment Background Noise Level (ABL). Rating Background Level is the median of the overall ABL. Ref: 20C TRP th August 2011 Page 18 of 22

19 R w Weighted Sound Reduction Index: A new single number quantity for airborne sound insulation rating which replaces STC. STC has been traditionally used for the classification of partitions and to define acoustical requirements in the Building Code of Australia. For majority of partitions, the value for R w will be similar to the value for STC. Partitions with particularly poor performance at 100Hz may have lower values for R w than for STC. Conversely, partitions with poor performance at 4kHz may have higher values for R w than for STC. Ctr Adaptation factor: Ctr is a spectrum adaptation factor which has been chosen in the NCC to take into account lower frequency level sounds. For an airborne sound insulation, the Ctr factor and the Rw of building element will need to be considered. Ctr is a negative number which means that Rw + Ctr of a building element will be less than the Rw of the building element. For example a wall system may have an Rw of 55 but would have an Rw + Ctr of 50 if the Ctr value was 5. Weighted Standardised Level Difference, DnT,w: A term used in combination with Ctr to describe the airborne sound insulation rating of a building element when tested on site. A higher DnT,w means a higher difference between the sound levels in the originating (source) room and the receiving room and thus a higher standard of insulation. The higher the Dntw + Ctr of a building element, the better the performance of the building element in terms of airborne sound insulation. Weighted Normalised Impact Sound Level, L n,w : A term used to describe the impact sound insulation of the floor. In the NCC, the use of parameter L n,w plus spectrum adaptation term CI will be used to quantify the floor impact sound insulation ratings. The lower the L n,w + CI of a floor, the better the performance of the floor in terms of impact sound insulation. Weighted Standardised Impact Sound Level, LnT,w: A term used in combination with a spectrum adaptation CI to describe the impact sound insulation rating of a floor when tested on site. Similar to the L n,w, it measures adequateness of a floor in controlling impact sound. Ref: 20C TRP th August 2011 Page 19 of 22

20 APPENDIX D: GLAZING SCHEDULE Table D-1: Schedule of Window and Glazing (R w ) - Commercial Glazing recommendations Level Unit Facing Thickness (mm) Rw glass Rw glass+frame Ground Commercial Canterbury/Troy/Charlotte 6.38 lam Table D-2: Schedule of Window and Glazing (R w ) - Residential Block A Glazing recommendations Unit Space Facing 2 Thickness (mm) Rw glass Rw glass+frame A1, A2 A3, A4 A5, A13, A21, A28, A37 A6, A14 Bed 1 & 2 Troy 6.38 lam Living Troy 6 mono Bed 1 & 2 Rear 6 mono Living Rear 4 mono Bed 1 Canterbury/Troy lam Bed 2 Canterbury/Troy lam Living Troy 6 mono Bed 1 &2 Troy 6.38 lam Living Troy 6 mono A7, A8, A15, Bed 1 &2 Rear 6 mono A16, A23 Living Rear 4 mono A9, A17 A10, A18 A11, A12, A19, A20, A26, A27, A32, A33, A35, A36 Bed 1 &2 Internal 6.38 lam Living Internal 6 mono Bed 1 & 2 Internal 6.38 lam Living Canterbury / Internal 6.38 lam Bed1 (setback) Canterbury lam Bed 2 Canterbury lam Living Canterbury 6.38 lam Where Internal is specified, this refers to the façade facing the walkway between both buildings. Ref: 20C TRP th August 2011 Page 20 of 22

21 Glazing recommendations Unit Space Facing 2 Thickness (mm) Rw glass Rw glass+frame A22 A24 Bed1 Rear 6 mono Bed2 Troy 6.38 lam Living Troy 6.38 lam Bed1 Rear 6 mono Bed2 Internal 6.38 lam Living Internal 6.38 lam A25, A31, Bed 1 & 2 Internal 6.38 lam A34 Living Canterbury /Inter 6.38 lam A29, A30 Bed 1 & 2 Rear 6 mono Living Troy/ Internal 6 mono Rear 4 mono Table D-3: Schedule of Window and Glazing (R w ) - Residential Block B Glazing recommendations Unit Space Facing Thickness (mm) Rw glass Rw glass+frame B1, B2 B3, B4 B5 B6, B14 B7, B39 B8, B15, B16, B23, B24, B31, B32 Bed 1 & 2 Charlotte 6.38 lam Living Charlotte 6 mono Bed 1 & 2 Rear/Inter 6 mono Living Rear 4 mono Bed 1 Internal 6.38 lam Bed 2 Canterbury lam Living Canterbury 6.38 lam Bed 1 &2 Internal 6.38 lam Living Internal 6 mono Bed 1 &2 Rear 6 mono Living Rear 4 mono Bed 1 &2 Rear 6 mono Bed 1 Charlotte/ Internal 6.38 lam Living Rear 4 mono Ref: 20C TRP th August 2011 Page 21 of 22

22 Glazing recommendations Unit Space Facing Thickness (mm) Rw glass Rw glass+frame B9, B17, B25, Bed 1 & 2 Charlotte 6.38 lam B33 Living Charlotte 6 mono B10, B18, B26, B34, B41 Living Bed1 &2 Charlotte 6.38 lam Canterbury / Charlotte 6.38 lam B11, B12, Bed1 B19, B20, (setback) Canterbury lam B27, B28, B35, B36, Bed2 Canterbury lam B42, B43 Living Canterbury 6.38 lam B13, B21, Bed1 & 2 Internal 6.38 lam B29, B37 Living Canterbury /Inter 6.38 lam B22, B30, B38 B40 Bed 1 & 2 Internal 6.38 lam Living Internal 6 mono Bed 1 & 2 Rear 6 mono Bed 2 Charlotte 6.38 lam Living Charlotte 6 mono The above glazing thicknesses are the minimum required for acoustic performance. Glazing thicknesses can be increased for the reasons of fire, safety, etc. Ref: 20C TRP th August 2011 Page 22 of 22