Lighting : LIGHTING Feb-Mar 2018
40 LIGHTING MAGAZINE | February/March 2018 It follows then that where AS/NZS1680 recommends increasing those levels the IPD should increase accordingly. Where a designer has valid reason to increase lighting levels, such as providing for the vision impaired or lighting to allow the use of security cameras, the designer should nominate their target illuminance and its corresponding maximum IPD in their specification and explain the reason to the building certifier. Alternatively, the Performance Solution which allows further flexibility in design response, may be used to show compliance with any Part of the Code instead of the Deemed to Satisfy Solution. The Performance Solution looks at the total IPD across a building and offsets spaces that have higher IPD than allowed in the code against spaces with an IPD below what is required. Occupancy sensors in car park entry zones Concerns were raised that occupancy sensors in a carpark driveway entry zone will not switch on quickly enough to adjust lights as cars enter car parks. However project experience shows that well-placed occupancy sensors can activate the lights before the car enters the space due to the instantaneous switching of LEDs. CCT restrictions in perimeter up-lights Concerns were raised about the restriction of colour temperature for white light on the exterior of buildings. Newly published research indicates that Artificial Lighting at Night (ALAN) impacts on animals and flowering plants and may also impact on biodiversity and human health. However the concerns of the industry have been heard and the rule has been relaxed back to 4,000K instead of 3,000K. Indirect light While indirect lighting is not an efficient method of lighting, it is a beautiful method which enhances the lighting quality of a space. As such it is not the intention of the proposed updates to ban indirect lighting. REFERENCES Section J6 NCC 2016 AS/NZS1680.0 Australian/New Zealand Standard, Interior and Workplace Lighting, Safe movement AS/NZS1680.2.1 Australian/New Zealand Standard, Interior and Workplace Lighting, Specific applications – Circulation spaces and other general areas AS/NZS1680.1:2006 Australian/New Zealand Standard, Interior and Workplace Lighting, Principles and recommendations AS/NZS1680.2.2 Australian/New Zealand Standard, Interior and Workplace Lighting, Specific applications – Office and screen based tasks AS/NZS1680.2.3 Australian/New Zealand Standard, Interior and Workplace Lighting, Specific applications – Educational and training facilities AS/NZS1680.2.4 Australian/New Zealand Standard, Interior and Workplace Lighting, Specific applications – Industrial tasks and processes AS/NZS1680.2.5 Australian/New Zealand Standard, Interior and Workplace Lighting, Specific applications – Hospital and medical tasks AS/NZS4282 Artificial light at night as a new threat to pollination, Nature 10 August 2017, Page 206, Eva Knopp, Leana Zoller, Remo Ryser, Christopher Gerpe, Moran Horler, Colin Fontaine, University of Bern, Institute of Ecology and Evolution. The initial analysis for the Section J updates was based on simple simulations using direct lighting in order to get through the amount of data analysis required by the due date. It was only ever intended to be a starting point. The ABCB is under taking further testing through completing case studies of spaces that use indirect lighting, including lobbies and restaurants. These will test if the calculations provide a basis for adjusting maximum IPD to account for indirect light sufficiently, and it is expected that in many cases such as lift lobbies and amenities where RAR adjustment often has a significant effect on the max IPD, the combination of RAR, controls and lighting quality adjustment factors may provide enough wiggle room for it. FURTHER OPPORTUNITIES FOR FEEDBACK In response to a call for evidence to prove or disprove the effectiveness of the proposed new maximum IPDs the lighting industry will provide thirteen case studies of NCC 2016 compliant spaces for examination to see what changes would be required in order to comply with NCC 2019 IPDs. The results from these will be analysed and used to make adjustments to the final draft. The draft Section J document with changes is available to the public for consultation and comment between 1 February and 13 April 2018. We encourage you to take part in this crucial part of the development of a key piece of legislation that will affect all our lives and the world we live in, in so many ways. Your feedback should be based in experience or well- considered theory and proved with calculations, simulations, luminaire or LED data or case studies citing relevant data. To find a copy of the draft code go to www.abcb.gov.au FOOTNOTES: 1 More detail see http://www.abcb.gov.au/Resources/Publications/Education- Training/NCC-2019-Energy-Efficiency-Provisions-Rationale-and-Scope Where a designer has valid reason to increase lighting levels, such as providing for the vision impaired or lighting to allow the use of security cameras, the designer should nominate their target illuminance and its corresponding maximum IPD in their specification and explain the reason to the building certifier.
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