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Rosebay Marina RedevelopmentAssessment of the Impact of the Proposed New LightingAddenbrooke Pty Ltd05 September 2008Document No.:

Assessment of the Impact of the Proposed New Lighting

Prepared for

Addenbrooke Pty Ltd

Prepared byBassett Consulting EngineersLevel 11, 44 Market Street, Sydney NSW 2060, PO Box Q410, QVB Post Office NSW 1230, AustraliaT +61 2 8295 7555 F +61 2 8295 7500 E [email protected] www.bassett.com.au

ABN 22 004 873 634

05 September 2008

60048558

© W. E. Bassett Pty Ltd 2008

The information contained in this document produced by W. E. Bassett Pty Ltd is solely for the use of the Client identified on thecover sheet for the purpose for which it has been prepared and W. E. Bassett Pty Ltd undertakes no duty to or accepts anyresponsibility to any third party who may rely upon this document.

All rights reserved. No section or element of this document may be removed from this document, reproduced, electronicallystored or transmitted in any form without the written permission of W. E. Bassett Pty Ltd.

Rosebay Marina RedevelopmentAssessment of the Impact of the Proposed New Lighting -W:\60048558 - Obtrusive Light\4. Tech Work\4.3 Eng\4.3.7 Specialist Light\Reports\Rosebay MarinaAssessment of New Proposed Lighting.docRevision 05 September 2008

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Quality InformationDocument Assessment of the Impact of the Proposed New Lighting

Ref 60048558

Date 05 September 2008

Prepared by Tim Shotbolt and Miwook Kang

Reviewed by Tim Shotbolt

Revision History

AuthorisedRevision Revision

Date DetailsName/Position Signature

05/09/2008 Draft David ListerExecutive Manager

1 21/09/2008


Table of ContentsExecutive Summary i1.0 Rosebay Marina Existing Pontoon Lighting 12.0 Existing Lighting in General View 23.0 Applicable Australian Standards 24.0 New Proposed Lighting 25.0 Lighting Calculations for New Proposed Lighting of Rosebay Marina Pontoons 46.0 Field Measurements 67.0 Comparison of New to Existing and to AS/NZS4282 Requirements 68.0 Recommendations 69.0 Conclusions 6APPENDIX A: Terminology 7APPENDIX B: Details of Measuring Equipment 8


Executive Summary

Bassett Consulting Engineers have been engaged by Addenbrooke Pty Ltd to assess the impact ofthe new proposed lighting of the pontoons and fingers of the Rosebay Marina Redevelopment. Thisarea was inspected both by day and night and field measurements of the lighting were recorded andshown in this report.

The proposed new lighting has also been modelled with computer software AGI32 version 2.02 andthe results compared to the existing lighting and to the current Australian Standard AS/NZS4282.

The result is luminaires that the new proposed luminaires will appear much less bright than theexisting marina luminaires and considerably less bright than public lighting in the generalneighbourhood. The light spill is also predicted to be much less than the requirements ofAS/NZS4282.

It is recommended that warm white colour temperature energy saving compact fluorescent lamps beused as they appear less bright than either neutral white or cool white colour temperature lamps.

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1.0 Rosebay Marina Existing Pontoon Lighting

The existing electric lighting on the pontoons at Rosebay Marina consists primarily of opaque sphereson tubular metal posts as shown in Figure 1. and an 18W linear weatherproof fluorescent towards thefuel area, Figure 2.

Figure 1 Existing Lighting on Rosebay Marina Pontoons

Figure 2 Existing Lighting onRosebay Marina PontoonsAdjacent Fuel Area.

Rosebay Marina RedevelopmentAssessment of the Impact of the Proposed New Lighting -W:\60048558 - Obtrusive Light\4. Tech Work\4.3 Eng\4.3.7 Specialist Light\Reports\Rosebay MarinaAssessment of New Proposed Lighting.docRevision 05 September 2008 Page 1

2.0 Existing Lighting in General ViewLighting in the general area consists of a range of luminaires from highly visible opal spheres aroundthe promenade (refer Figure 3) to major high intensity discharge white mercury vapour streetlights toslighter smaller version of the same plus bare linear fluorescent weatherproof streetlights and somefloodlights.

3.0 Applicable Australian StandardsThe applicable Australian Standard for light spill control is AS/NZS 4282 Control of the ObtrusiveEffects of Outdoor Lighting.

4.0 New Proposed Lighting

Figure 4 New Proposed Luminaire

Manufacturer: Marine TechnologiesCatalogue number: MP1100Light source: Compact fluorescent 15W

warm white colour temperatureMaximum Luminous Intensity: 15 candela (cd)

The proposed lighting is similar to that existing on the adjacent Royal Motor Yacht Club but without thebright high intensity discharge reflector lamps, refer Figure 5 and also Figure 6 for typical viewbetween moored boats.

Figure 3 Public Lighting Highly Visible in the General Area of Rosebay and Point Piper


Figure 5 Existing Lighting at Adjacent Royal Motor Yacht Club Similar to NewProposed Lighting for Rosebay Marina

Figure 6 New Proposed Lighting for Rosebay Marina – Typical View between MooredBoats


5.0 Lighting Calculations for New Proposed Lightingof Rosebay Marina Pontoons

Rosebay Marina has been modelled using survey information provided by Addenbrooke Pty Ltd. A 3Dmodel was created in AGI32-V2.02 inclusive of the adjacent area.

Figure 7 provides a birds eye view of the lit pontoons as rendered in AGI32 computer program. Figure8 provides predicted light spill illuminances on the horizontal at sea level. In the vertical plane in frontof some adjacent residences the spill illuminance will be even less than that predicted for Point PiperMarina Redevelopment (0.021 lux) even though there are approximately three times as manyluminaires, illuminance is proportional to the inverse square of the distance, that is, double thedistance and the illuminance one quarter the value which will equate to 0.016 lux if no boats aremoored at the marina to shield luminaires from view.

Figure 7 Computer Rendering of Proposed New Lighting Rosebay Marina Pontoons; Birds Eye View


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6.0 Field MeasurementsLuminaire or Location Luminance (cd/m2) Illuminance (lux)

Existing sphere, Rosebay Marina pontoon 487Vertical Illuminance at beginning of Point PiperMarina adjacent residents from existing lighting 0.37

Promenade typical sphere 2,788Large mercury vapour white street light 53,890Smaller mercury vapour white street light 10,820Linear fluorescent 18W white street light (alsosimilar to that existing on Point Piper Marina 3,413

The field measurements were made with instruments which have current NATA laboratory certifiedcalibration (refer Appendix B for details of instruments).

7.0 Comparison of New to Existing and toAS/NZS4282 Requirements

The new proposed lighting as detailed in this document will provide less illuminance in the verticalplane for the adjacent residences than existing lighting (refer sections 5 and 6 above) and thepredicted value is well below the requirements of AS/NZS4282 for both hours prior to curfew and aftercurfew.

The new proposed luminaires will be less bright in appearance to the existing lighting andconsiderably less bright than any of the local area public lighting.

8.0 RecommendationsUse warm white colour temperature compact fluorescent energy saving lamps as warm white light isperceived to be less bright than neutral white or cool white light.

9.0 ConclusionsThe new proposed lighting for the pontoons and fingers of the new proposed Rosebay Marina willprovide less light spill than the existing lighting.


APPENDIX A: TerminologyTerm DefinitionIlluminance The quantity of light received at a given point but averaged per

square metre (lumens/square metre). It is measured with anilluminance meter that is corrected to simulate the performance of thehuman eye. Illuminance at any point is inversely proportional to thesquare of the distance from the light source. Unit of measurement:lux.

Iso-lux Iso-lux curves are a locus of points on or in a plane where theilluminance has the same value

Luminaire A technical term for the complete assemblage of apparatus thatdistributes, filters or transforms the light given by a lamp or lamps andconsists of lamp, control gear, housing, reflector system, glass orrefractor and mounting arrangement commonly referred to as a “lightfitting”.

luminance Luminous intensity in a prescribed direction from an object that emitslight divided by the projected area of that object towards thatobservation point. Units candelas per square metre (cd/m2).Luminance is independent of distance.

Luminous intensity The intensity of light in a specific direction measured in candelas (cd)


APPENDIX B: Details of Measuring Equipment

Illuminance meter. Yokogawa 510 02 auto ranging illuminance meter. Auto ranging from 0.01 lux to100,000 lux. Last calibrated by a NATA registered laboratory 06/06/08.


Luminance meter. Minolta LS110. Last calibrated by a NATA registered laboratory 03/06/08.


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