March- April 2021 Light Lines by Matrix Print

The Society of Light and Lighting

LIGHT LINES

VOLUME 15 ISSUE 2 MARCH/APRIL 2021

NEW LAMPS FROM OLD How to give African schoolchildren a brighter future

HOUSE RULES The SLL's new guide to communal residences

Editorial

March/April 2021

FROM THE EDITOR SECRETARY Brendan Keely FSLL bkeely@cibse.org SLL COORDINATOR Juliet Rennie Tel: 020 8772 3685 jrennie@cibse.org EDITOR Jill Entwistle jillentwistle@yahoo.com COMMUNICATIONS COMMITTEE: Linda Salamoun MSLL (chair) Iain Carlile FSLL Jill Entwistle Chris Fordham MSLL Rebecca Hodge Eliot Horsman MSLL Stewart Langdown FSLL Rory Marples MSLL Bruce Weil Gethyn Williams All contributions are the responsibility of the author, and do not necessarily reflect the views of the society. All contributions are personal, except where attributed to an organisation represented by the author.

COPY DATE FOR LL3 2021 IS 9 MAY PUBLISHED BY The Society of Light and Lighting 222 Balham High Road London SW12 9BS www.sll.org.uk ISSN 2632-2838 © 2021 THE SOCIETY OF LIGHT AND LIGHTING The Society of Light and Lighting is part of the Chartered Institution of Building Services Engineers, 222 Balham High Road, London SW12 9BS. Charity registration no 278104

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In any national crisis we inevitably look to political leaders to formulate policies that will at least mitigate and, hopefully, ultimately resolve it. However as the Covid pandemic proves yet again it is primarily ordinary people doing their bit – medical staff, bus drivers, lab technicians, volunteer food deliverers and on – who actually get us through it. With climate change, pandemic and political unrest it is easy to be overwhelmed by the magnitude of the problems humankind currently faces. But then you find an example of one person who has a simple solution to a big problem. In fact in this instance, several problems in one go. Aluwaine Manyonga, SLL Young Lighter 2020, has devised a solar-powered LED lantern that not only provides a viable alternative to the widespread use of toxic kerosene lamps in Africa, but manages to do it by recycling plastic bottles and electronic waste (Solar recycle, p5). There

is also potential for creating employment. As Manyonga says, it could be a game changer. If ever there was a person who believed you could move mountains if you only put your mind to it, it was Liz Peck. A former SLL secretary and then president, she fitted more passion, energy, service and commitment into too few years than many people who live twice as long. We pay tribute to her in this issue (Light and soul, p11). As statesman and philosopher Edmund Burke put it, 'Nobody made a greater mistake than he who did nothing because he could do only a little'.

JILL ENTWISTLE JILLENTWISTLE @YAHOO.COM

CURRENT SLL LIGHTING GUIDES SLL Lighting Guide 0: Introduction to Light and Lighting (2017) SLL Lighting Guide 1: The Industrial Environment (2018) SLL Lighting Guide 2: Lighting for Healthcare Premises (2019) SLL Lighting Guide 4: Sports (2006) SLL Lighting Guide 5: Lighting for Education (2011) SLL Lighting Guide 6: The Exterior Environment (2016) SLL Lighting Guide 7: Office Lighting (2015) SLL Lighting Guide 8: Lighting for Museums and Galleries (2015) SLL Lighting Guide 9: Lighting for Communal Residential Buildings (2013) SLL Lighting Guide 10: Daylighting – a guide for designers (2014) SLL Lighting Guide 11: Surface Reflectance and Colour (2001) SLL Lighting Guide 12: Emergency Lighting Design Guide (2015) SLL Lighting Guide 13: Places of Worship (2018) SLL Lighting Guide 14: Control of Electric Lighting (2016) SLL Lighting Guide 15: Transport Buildings (2017) SLL Lighting Guide 16: Lighting for Stairs (2017) SLL Lighting Guide 17: Lighting for Retail Premises (2018) SLL Lighting Guide 18: Lighting for Licensed Premises (2018) SLL Lighting Guide 19: Lighting for Extreme Conditions (2019) SLL Lighting Guide 20: Lighting and Facilities Management (2020) Guide to Limiting Obtrusive Light (2012) Code for Lighting (2012) Commissioning Code L (2018) SLL Lighting Handbook (2018)

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Secretary’s column/Contents

March/April 2021

Contents

FROM THE SECRETARY

Twitter: @sll100

• A tribute to Liz Peck:

•

www.cibse.org/newsand-policy/january-2021/ remembering-liz-peckfsll,-1974-2021 Recordings of LR&T Symposium: www.cibse.org/societyof-light-and-lighting-sll/ sll-events/applying-light-forhuman-healthpage Upcoming SLL webinars: www.cibse.org/society-oflight-and-lighting-sll/sllevents/upcoming-webinarsand-online-content Previously recorded CPD webinars: www.cibse.org/society-oflight-and-lighting-sll/sllevents/past-presentations Upgrading membership: www.cibse.org/ getmedia/08bc04ab-8f5d-4f72aeb4-ca1e97b0871a/GuidanceNotes-Flowcharts.pdf.aspx

SLL president elect, and Peter Raynham, past president, will also be contributing to the event. For upcoming SLL webinars go to the website (see box). We would like to thank all those who have renewed their membership subscriptions. Just some of the benefits are clear from this column alone. We would encourage SLL affiliates who have been members of the society for some years to upgrade their membership to associate member (AMSLL) or member (MSLL) grade. Full details on upgrading membership and the criteria to be met can be found on the website (see box). If you have any questions on membership please do call or email us and we will help the best we can.

EDITORIAL

SECRETARY’S COLUMN

NEWS

SOLAR RECYCLE SLL Young Lighter 2020, Aluwaine Manyonga outlines his award-winning paper which suggests a sustainable solution to limited electricity access across Africa

LIVING EXAMPLES Nigel Monaghan examines the areas covered in the forthcoming updated version of LG9 on lighting communal residential buildings

11 LIGHT AND SOUL A tribute to the life of former SLL president Liz Peck

15 AN OFFICE POINT OF VIEW Iain Carlile looks at three of the latest LR&T papers all focusing on the workplace

16 EVENTS

COVER: Union Station Great Hall restoration, Chicago, by CharterSills Architectural Lighting Design. Winner of the LIT Lighting Design Awards for Lighting Designer of the Year, Interior Architectural Illumination

BRENDAN KEELY BKEELY @CIBSE.ORG

As you will all probably now know, Liz Peck, SLL past president, died in early January. Many people have contacted us expressing their sadness as well as shock. I think it’s fair to say that we feel that same sadness and shock. A review of the life of Liz Peck has been included on the SLL website (see box) and we also pay tribute in this issue of Light Lines (see p11). We are delighted that Lighting Guide 20: Lighting for Facilities Management is now available for members to download from the CIBSE Knowledge Portal. Members wishing to purchase a hard copy of the guide will receive a 50 per cent discount. The brand new guide written by Sophie Parry, FSLL, will help facilities managers who are required to maintain, modify and update electric lighting installations. A big thank you to Sophie. By the time this issue of Light Lines lands on your doorstep we will have finalised the SLL LightBytes Online 2021 programme. The programme will be delivered in the spring with speakers Steve Shackleton (Fagerhult), Helen Loomes (Trilux) and Tim Bowes (Whitecroft) discussing the latest issues concerning the circular economy and examining solutions. The event will be broken down into five sessions under the title Minimum Energy, Minimum Resource and Maximum Comfort. All sessions will include a live audience Q&A. The final session will see a guest speaker present their thoughts on the circular economy prior to the speakers joining for the extended Q&A. Members who have renewed their 2021 subscriptions will be able to register for the event at no cost. Non-members will be asked for a small fee. As you will recall, the SLL hosted the Lighting Research and Technology Symposium back in November. The recordings of the event are now free to watch on demand for all members who have renewed their 2021 subscriptions (see box). Non-members can still purchase the event on demand. The SLL webinar planning continues. On 10 March, the SLL will welcome the Good Light Group which will present on its initiatives and activities. Alongside the Good Light Group, Ruth Kelly Waskett,

News

March/April 2021

THE LATEST NEWS AND STORIES

LUMINAIRE OF THE FUTURE

DEATH OF FORMER SLL PRESIDENT SHOCKS AND SADDENS THE LIGHTING INDUSTRY The death of former SLL president and independent lighting designer Liz Peck in January at the age of 46 was greeted by the lighting industry with shock and sadness. President from 2015-2016, she was named Lux Person of the Year in 2015 following the Night of Heritage Light event which she was instrumental in devising and organising. The judges praised ‘her personal passion and energy’ in promoting the cause of good lighting. She started her career with Concord Lighting in 1999, moving to Philips before setting up her independent lighting consultancy LPA Lighting. She joined the SLL in 2003. Last November, the Iron Bridge scheme, a collaboration with current SLL president Bob Bohannon, won the Outdoor Lighting Project of the Year at the Lux Awards. For a full tribute to Liz Peck, please turn to p11

NEW LIGHTBYTES SERIES LAUNCHED IN SPRING A new series of LightBytes, featuring online sessions, is planned for the spring. The theme will be Minimise Energy, Minimise Resource, Maximise Comfort with the sessions exploring the principles of the circular economy. The speakers as usual will represent the Sponsors in Partnership who make the events possible: Helen Loomes (Trilux), Tim Bowes (Whitecroft) and Steve Shackleton (Fagerhult), pictured from left to right. There will also be a guest speaker, and events will include individual speaker and group Q&A sessions.

ON THE LIGHTER SIDE... After a considerable stretch in lockdown there can be a limit to conversational topics so why not communicate through light, sound or movement instead? Devised by London-based Interaction Research Studio, Yo-Yo Machines are pairs of internetconnected devices that can be built by people at home using their instructions and off-the-shelf components. The pertinent device in this case is

Light Touch which allows users to send slowly fading coloured lights to one another. When you choose and send a colour, it pulses on the partner device then fades away slowly, so they can be used in real time or leave traces to find later. www.yoyomachines.io/lighttouch

The EU-backed Repro-light project has now concluded its three-year mission to create the 'luminaire of the future'. A consortium, which included lighting manufacturer Trilux, and lighting design and product development company Bartenbach, aimed to support the European lighting industry in creating more sustainable competitive products. The project used innovative technologies and materials to develop intelligent modular luminaires with smart production processes. Key components are interchangeable and configurable (different LED modules and optics, for instance), and their software can be updated accordingly. 'The LED luminaire can change from a disposable object into a customisable and sustainable product, with a high function value,' says Repro-light. The first luminaire, Tamlight, is a continuous line fitting, while a second luminaire architecture, the Personal Table Light (PTL), was developed to specifically improve workplace lighting and exploit the effects of light on human wellbeing. For more information visit: www.repro-light.eu

WORLD EXPERTS ISSUE RECOMMENDATIONS FOR LIGHT EXPOSURE Experts in the field, including Prof George Brainard, have issued recommendations for healthy light exposure for daytime, evening and night-time. The pre-print report, yet to be peer reviewed, emerged from the second International Workshop on Circadian and Neurophysical Photometry, which took place in 2019. This brought together experts in the fields of lighting, neurophysical photometry, and sleep and circadian research. The primary aim was to develop expertconsensus guidelines for healthy daytime and evening/night-time light environments. Based on the SI-compliant metric, M-EDI – melanopic equivalent daylight illuminance – (D65), they 'provide a straightforward framework to inform lighting design and practice', says the report. www.preprints.org/manuscript/202012.0037/v1

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SLL Young Lighter 2020

March/April 2021

SOLAR RECYCLE SLL Young Lighter 2020, Aluwaine Manyonga outlines his award-winning paper on a sustainable solution to limited access to electricity in Africa

frica, the cradle of mankind, rich in many natural resources and with an annual solar irradiance of 260W/sqm, still suffers limited access to electricity. According to the World Bank in 2018, only 47.7 per cent of the population has access, with rural areas being the most affected with a deficit of 68.5 per cent. This means 600m people have no access to electricity. School pupils are particularly affected since one in every three primary

Twitter: @sll100

school students goes to a school without any type of electricity, according to the United Nations Department of Economic and Social Affairs (UN DESA) in 2014. This limited accessibility has robbed students of one of the key benefits of electrification which is lighting, clearly essential to the education sector. To help rectify this situation, I would like to introduce the off-grid solar lighting system and Chigubhu Lantern concept. Combining

off-grid solar lighting with the reuse of both electronic and plastic waste forms the basis of the solution. I believe this could be an answer to Africa’s limited access to electricity and ensure that every student has access to high-quality and reliable lighting. As has become widely known, African school students are generally resorting to using fuel lamps and candles. Kerosene (paraffin) is the most popular fuel used and it has detrimental effects on health and the environment, and is costly for users. Kerosene lamps emit 270,000 tonnes of black carbon every year, contributing a major share to global warming. The health implications of these lamps include impaired lung function, asthma and cancer risks, and compromised visual health due to their low lumen output. Despite the low initial investment, these lamps have a higher maintenance cost which can account for 10 to 15 percent of

E 5

SLL Young Lighter 2020

'School pupils are particularly affected since one in every three primary school students goes to a school without any type of electricity' household income. This expense leads parents to cut down students' study time. Light output from the kerosene lamps is also dull and flickers, which reduces the concentration and energy level of the student, hence the need for high-quality light sources.

THE BENEFITS OF LEDS LED lighting has replaced a lot of kerosene lamps on the continent. As they have elsewhere in the world, LEDs have become a great competitor of conventional lighting technologies. The LED is a semiconductor based on the p-n junction of a diode that emits visible light of a certain colour when electricity passes through it. It has a long life, from 25,000 to 50,000 hours, and also a high luminous efficacy which ranges from 60-130 lm/W. It is therefore very useful in batterypowered systems, and continuously improving. Their efficiency reduces the operational cost compared to other light sources, and they produce higher luminous flux in smaller packages which is favourable in most lighting applications. There has also been a price drop in the LED industry, making it affordable to the rural population.

March/April 2021

poor capacitor construction, inefficient heatsink design and use of poor-quality components. Driver failure contributes to 60 per cent of LED luminaire failure. Africa still lacks the infrastructure to manage electronic waste and this poses a challenge for ensuring proper collection and recycling. With the sharp rise in the production of batterypowered consumer electronics the continent is seeing more batteries finding their way to dumpsites before the end of their lifespan. These batteries can be reused to power LED chips from luminaires that have been disposed of, a proposition made more viable by the high efficacy of LED lighting.

OFF-GRID POWER The high solar yields that are received in Africa generally makes off-grid solar lighting a highly practical solution for improving lighting in schools. Furthermore, the decrease in solar equipment prices also means there is increased potential for joint ventures between the government, NGOs and the general population to ensure that the schools get reliable lighting solutions. DC solar systems would be used to power LED chips directly, to increase efficiency and eliminate the use of sophisticated drivers which, as mentioned before, shorten the lifespan of the chip. DC solar systems in LED lighting have the following benefits compared to an AC solar system:

• • • •

better for charging batteries more efficient if most energy needs to be stored, meaning longer lighting hours easy to set up and safe to work with for voltages below 48V eliminates the use of inverters which reduces the overall system cost by 20 per cent

This system would be set up at schools and other central points so as to cater for students living far away from the school and ensure reliable access to lighting. The off-grid solar lighting set up would consist of DC LED luminaires, solar panels, charge controllers, batteries, and charging ports (5V and 12V) for charging individual lanterns. The system would be sized to provide power for charging the batteries and the individual lanterns. The lumen method and Dialux Evo would be used to ensure 300 lux general lighting for classrooms is achieved. Students and teachers would be taught the basics of setting up and maintaining the off-grid solar lighting system. Multiple USB charging ports would be provided for charging individual lanterns. The process would also involve establishing collection points and sorting areas for electronic waste, typically from LED sources, rechargeable torches, power banks and cellphone batteries. Students, teachers and the community would be trained on how to reuse the abovementioned e-waste to make lanterns.

Kerosene lamps have become a widely used light source at the expense of both health and the environment

RECYCLED COMPONENTS The concept uses off-the-shelf DC converters and chargers. LEDs are designed for lowvoltage DC which makes drivers a requirement for using them in AC systems. The drivers usually fail before the LED chip fails and this is due to

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SLL Young Lighter 2020

March/April 2021

SOLAR CHARGER AND CONTROLLER CIRCUIT

SOLAR PHOTOVOLTAIC PANELS

DC LOADS (DC bulbs, DC fans, mobile chargers etc.)

BATTERY BANK

p Individual elements which make up the solar DC system

CHIGUBHU LANTERN CONCEPT Chigubhu is a Shona word for any plastic container (water bottle). African countries are now leading in polyethylene terephthalate (PET) recycling and small-to-medium enterprises have created employment for many people who take part in plastic waste collection. Plastic water containers can be reused to produce custom-made housings for the lanterns, with the electronic waste combined and contained within. Transparent high-density polyethylene (HDPE) can be used to direct and diffuse the light to produce a high-quality source. To minimise the cost and maintenance of individual small solar panels for each light, the lanterns will be recharged at school or any of the central points within the off-grid solar lighting system. To date two lanterns, made using electronic waste, have been tried and tested. In summary, the Chigubhu Lantern comprises the following: • • • • •

LED chip charging circuit (5V/12V) rechargeable battery control circuit Chigubhu container

The concept can support various existing

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initiatives that are introducing solar-lighting kits across Africa. Extending the lifespan of the solar lantern will further minimise and help in controlling electronic waste disposal. To summarise, the concept will have a whole range of benefits. LEDs offer high-quality light output which reduces compromise on visual health and, using higher CCT (cool white) sources, have proven to be effective when studying by increasing the alertness, attitude and energy level of the students. Classroom and studying time will be extended for the students, teachers would be able to work extra hours marking assignments and advancing their education, and adult evening classes can be offered. This will lead to improved pass rates and literacy. Students and teachers will now use clean lighting sources and recycle e-waste, and there will be a reduction in the amount of CO2 emissions from fuel lamps. Extra income streams will be generated from repairing lanterns and collecting plastic waste. Students will have an opportunity to learn about the impacts of lighting on their overall performance. To conclude, limited accessibility to highquality lighting has negatively affected Africa’s education system. This concept can indeed be a game-changing solution.

p The Chigubhu lantern: plastic water containers can be reused to produce custom-made housings for the lanterns

The author would like to thank Ruvarashe Manyonga for assistance with this feature

Guidance

March/April 2021

LIVING EXAMPLES

An updated version of LG9, which focuses on lighting communal residential buildings, will shortly be published. Nigel Monaghan explains why revision was needed and examines the areas that will be covered

p The high-end Clarges Mayfair, lighting by StudioFractal: in private spaces, residents can have the lighting system their budget and imagination can extend to

tandards, guidance, technology, knowledge and fashion relating to lighting are constantly evolving. The last edition of the guide was in 2013. Although very informative, like all the SLL lighting guides which are reviewed, the time has come for a refresh of LG9 Multi-occupancy or communal residential buildings can include rented or private low or high-rise apartments, student accommodation, social housing, NHS/ MoD accommodation, boarding schools, children’s homes, domestic violence refuges, substance-abuse recovery units and residential care homes of different types. Budgets for the lighting spend will vary widely. Some buildings will be new build while others may be refurbishments of existing stock, some will be luxury and fully automated, others may be social housing upgrades. Regardless of the budget the intention should be to provide an attractive, safe, adequate, efficient and easily maintainable lighting system in places which numerous people call home. Specifiers of lighting systems for these types of premises can range from architects, consultants and manufacturers to the FM team, wholesalers or contractors. There can be a range of knowledge, skills and experience, whether specifying the lighting for a complete building or simply arranging the replacement of a failed luminaire. Now that almost all light sources are LED, where development has advanced rapidly in the past five years, sections on dimming and control have been expanded to cover recent technologies, such as Bluetooth LE. We may not necessarily notice good functional lighting, but poor lighting will certainly be obvious. The aim of the guide is not to be prescriptive or to subdue design flair, but to help avoid poor lighting installations. We don’t want designers to

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Guidance

March/April 2021

'The aim of the guide is not to be prescriptive or to subdue design flair, but to help avoid poor lighting installations'

jump straight to the horizontal illuminance recommendations but to consider the vertical surfaces and volumetric space. The guide has been written so that it can be read by anyone involved in the lighting of communal residential buildings.

In the current climate, many people who would not normally do so find themselves working from home. Not everyone will be fortunate enough to have a dedicated office space, so they could be working at the dining table, or seated on the sofa. Typical lighting scenarios for home working are considered. We walk through a typical building and consider the possible communal shared spaces of residential buildings: entrances, corridors, stairs, waiting areas, lift lobbies, staff offices, dining rooms, lounges, activity rooms, retail spaces, laundry rooms, shower/bath/wc rooms, staff changing rooms, kitchens/tea points, cleaners’ rooms, and plant spaces. We delve deeper into a range of building types such as residential care homes, hospices or student accommodation, where the age group and abilities of residents is considered. In other words the same approach to lighting for all premises will not be suitable. We also consider elements of BS 8300, covering accessibility and inclusivity, for both internal and external spaces.

AREAS COVERED

DAYLIGHT, WELLBEING AND SUSTAINABILITY

In private spaces such as apartments, residents can have the lighting system their budget and imagination can extend to. Ideally a choice of lighting scenes is desirable and some ways of achieving this where budgets don’t allow for a complex lighting control system are discussed.

As you would expect from a lighting guide there are recommendations for maximising the use of any available daylight, but the guide also introduces sections on the current topic of lighting and wellbeing as applied to residential buildings. Likewise,

issues such as energy efficiency, energy management, sustainability and the circular economy are considered.

EMERGENCY LIGHTING We look at emergency lighting and remind designers about the fire safety/emergency lighting risk assessment and the duties of the responsible person and his/her obligation under UK law. There are many press reports of landlords facing heavy fines or prison for not meeting their obligations and responsibilities for providing emergency lighting protection for residents. We also look at safety lighting in residential properties. If you expect residents to stay put in a worst-case scenario night-time emergency with a loss of power, are residents expected to remain in the dark in their own spaces? And, if not, what is a suitable level of illuminance that will allow residents to see?

EXTERNAL LIGHTING Also addressed are the considerations for lighting external areas around communal residential buildings. These can be very varied. They could involve the approach road built by the new developer to be adopted by the local authority, the car parking spaces, the external pathways, or the entrance areas and signage. Any exterior lighting involves wider considerations: avoiding light spill on to neighbouring properties and

p The guide examines a broad range of building types, including residential care homes, as needs according to age and ability will require different lighting approaches

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Guidance

March/April 2021

mitigating negative effects on nocturnal animal and bird life. We again remind designers about the fire safety/emergency lighting risk assessment, and discuss what implications ‘outside to a place of safety’ could have. The guide goes on to discuss colour and its possible effect on the lighting installation from both electric lighting and daylighting perspectives. The use of colour as decoration or as an area identifier or wayfinding guide, and the interest caused by lighting contrast in some spaces is considered, as well as the importance of consistent colour temperature of light sources.

MAINTENANCE Any lighting installation is only as good as its maintenance regime. The light output of all luminaires will drop over time, caused by a reduction in the output of the light source itself and an increase in environmental pollutants to the exterior surfaces of the luminaire. While not all projects are large enough to need to include CDM requirements, this does not mean that these should be ignored. Luminaires positioned such that they require costly-to-hire specialist access equipment for maintenance or replacement, or that could potentially put the installer at unnecessary risk, should be avoided.

LIGHTING CONTROLS ‘Think lighting, think lighting controls’ should be an automatic consideration for specifiers, whether working on new build, or upgrading or retrofitting. The guide examines suitable control recommendations for typical spaces in residential buildings, as

'The guide also introduces sections on the current topic of lighting and wellbeing as applied to residential buildings' 10

The corridor in a student residence has a full lighting control system designed to maximise available daylight

well as highlighting the internal control recommendations of initiatives such as ‘secured by design’.

LUMINAIRE TYPES AND TECHNIQUES While not being prescriptive, the guide gives examples of successful tried and tested lighting techniques that can be used or combined in the majority of installations, both internally and externally, giving the positives and negatives of each lighting technique. The quality of light sources is also considered, including all the relevant electrical and technical attributes, so the specifier can compare like-for-like products.

communal multi-occupancy residential buildings, allowing the reader to further investigate relevant guidance that may affect their proposals.

CONCLUSION The intention is to have a document available to help and inform, giving recommendations and food for thought for anyone involved in specifying lighting systems for communal residential buildings. This will help create successful outcomes, and reduce the chance of poor results, for all involved in the lighting installation – and particularly for the residents themselves who are the ones who will live with it every day.

GUIDANCE We finish with a list of relevant current legislation, guidance, standards, building regulations and technical handbooks for England, Scotland, Northern Ireland and Wales, and other publications affecting

Lighting Guide 9 – Lighting for Communal Residential buildings is scheduled to be published this spring. Nigel Monaghan, FSLL, is the author, with help from Benedict Cadbury, FSLL sll.org.uk

Tribute

March/April 2021

SLL was establishing the award-winning Night of Heritage Light while she served as president. The vision of lighting up for one night a whole series of Unesco World Heritage Sites around the country was so ambitious that most people would have been defeated by the proposition. But Liz wasn't just a talker she was a doer. She devised a plan, enlisted other lighting professionals to help and she made it happen. She was named Lux Person of the Year in 2015. Her success led to further NoHL events, this time involving schools, making the concept educational and spreading the message of lighting to a much wider public. The following tributes from those who were both friends and colleagues in the lighting sphere speaks volumes for the respect she commanded and the affection in which she was held.

SIMON FISHER, FSLL, CO-OWNER F MARK

LIGHT AND SOUL A tribute to the life of former SLL president Liz Peck who died suddenly in January Twitter: @sll100

n a very poignant piece of timing, the award-winning Iron Bridge project was featured on the cover of the previous issue of Light Lines (January/February 2021). It was the last completed scheme that Liz Peck was involved with, a collaboration with current president Bob Bohannon. The sad news of her sudden death in January at the age of 46 came as a great shock to all who knew her. That someone so full of life and passion should so suddenly cease to exist was hard to come to terms with. There is an unfillable hole in the lighting world. Liz served as SLL president from 20152016, but while that was a culmination of sorts it was just a part of the massive contribution she made to the society. Probably her finest achievement for the

I am sat here staring at the front cover of the January/February issue of Light Lines. I feel honoured to write a few words about Liz, but desperately wish that I didn’t have to do it. Liz and I first met in 1999, when we both worked in Newhaven for Concord Lighting. At that point Liz knew literally nothing about lighting. What I saw in the next 12 months set out the stall for what defined Liz in her career. A willingness to learn, a sponge for information and a commitment to a cause. Time moved on. We created careers. We stayed in touch. In 2015, I received a call from Liz, who by then had accepted the responsibility of being the president of the SLL. This call would change my attitude to light, lighting, and life in general. Night of Heritage Light (NoHL) was one of the most audacious projects ever conceived and will remain unparalleled in my view. To work with Liz on this project was truly inspiring. She had vision. She had ability. She was driven. She was selfless, but not without self-doubt. She was committed. She didn’t suffer fools. She never entertained regret. She inspired designers and manufacturers to come together and create something exquisite… for one night only. In the face of unbelievable odds, NoHL not only happened, it was a huge success. For a brief moment in time in 2015, Liz made the impossible possible and it was such a privilege to be part of it.

Tribute

Her spirit extended beyond lighting. In 2018 she proudly sponsored and supported my LEJOG charity bike ride. She felt very strongly towards the children’s charities we were raising money for because of her own challenges with illness as a child. And, in my last conversation with her just before Christmas, she enthused about how good she felt helping at the local foodbank, delivering for those in more need than herself. Liz also loved sport. When the topic was not light, it was usually sport. I’ll

LIZ PECK 1974-2021 Liz Peck joined the lighting industry in 1999, taking a customer service role with Concord Lighting. Working alongside Mike Simpson, she moved from Concord to Philips, becoming a senior lighting designer and, with Mike’s encouragement, joined the SLL in 2003. At the time, Liz was undertaking the Bartlett MSc in Light and Lighting. She was awarded the Worshipful Company of Lightmongers Student of the Year in 2003 and graduated the following year. Always keen to contribute, Liz joined the society’s Newsletter committee and for a short time sat on CIBSE Council as part of subcommittee looking at membership grades and subscriptions, eventually moving on to SLL Council instead. In 2007, she set up her own independent lighting consultancy, LPA Lighting. She also provided training for CIBSE and the LIA. In 2008, Liz was awarded the SLL Lighting Diploma, and prior to being elected to the SLL executive committee, she was the society’s secretary. Liz became SLL president in 2015, coinciding with the Unesco International Year of Light (IYL). Liz was one of the instigators and project leads of the first SLL Night of Heritage Light, which celebrated the IYL, with SLL members lighting

March/April 2021

sum up my thoughts in a sporting sense by saying that, if there was a Lighting Hall of Fame, Liz’s number will be retired and never used again.

BOB BOHANNON, FSLL, SLL PRESIDENT Liz was a dear friend and invaluable colleague. She will be very widely missed. I never ceased to be amazed by just how many people knew her and her ability to inspire them. In the dark days following her passing, I was humbled by just how many people reached out with stories

nine Unesco World Heritage sites across the UK on 1 October 2015. Alongside Simon Fisher, Dan Lister and Rhiannon West, Liz led this national event, which gained international acclaim. The NoHL 2015 went on to win awards at the Lighting Design Awards, the darc awards and was highly commended at the Lux Awards. Liz was also named Lux Person of the Year 2015. Rounding up the IYL, Liz travelled to Mexico with SLL coordinator Juliet Rennie for the closing ceremony, where she spoke about the NoHL as part of an international panel of lighting designers and advocates. She was also an active member of the society’s technical and publications committee, contributing to several SLL Lighting Guides. At the time of her death, she was working on an SLL guide on the impact of lighting on flora and fauna. On moving from Brighton to her beloved city of Leeds, Liz started the Northern Lights initiative, which gave an opportunity for Light Minded people in the north of England to socialise, laugh and discuss the topics of the day. Liz was a great champion of the lighting community and felt strongly about supporting and encouraging those within it. She was very passionate, hard-working and committed to the lighting profession.

of how she had motivated them to achieve greater things and the huge number of people who will deeply miss her. She was immensely proud to have beaten all the longevity odds after major heart surgery as a teenager. All the while, her character shone through, she wouldn’t hesitate to speak truth to power and tell it how it was. Even though she was not in the best of health through much of 2020, she volunteered as a packer and deliverer for a Leeds food bank. It was hard work but she made people’s lives better. Working together on the Iron Bridge at Telford was a journey of challenge and achievement. We shared a deeply held view that our clients, the people of Ironbridge and the bridge itself deserved a great outcome. Even though she was rushed into hospital on the night of the Lux Awards, she was in her words ‘blown away’ to win an award. Liz’s work on projects such as Dover Castle (highly commended at the 2012 LDAs) and the Iron Bridge showed her to be at the leading edge of our profession, but her passion for the work of the SLL was the driving force in her life (well, maybe Leeds United as well). The SLL truly was Liz’s first and enduring love. The number of people with stories of how she helped, enabled or guided them either in their careers or in their roles within the society is truly remarkable. Many, including Geraldine O’Farrell of Historic England, Mark Major, Peter Philipson, Peter Hunt of the LIA, and Kathy Mulholland of Telford and Wrekin Council have called for a lasting tribute. How to fittingly cherish and sustain, not just the memory but the ongoing legacy of action is something that we are pondering as I write these words.

RUTH KELLY WASKETT, PRESIDENT ELECT SLL Liz is the reason I got involved with the SLL, joining her on the Newsletter Committee in 2004. She was a giver, of her knowledge, of her time, and she was the ultimate people person. She was responsible for introducing so many people to each other, to the world of lighting, and to the SLL – perhaps more than we will ever know. Liz’s hallmark was her authenticity and her drive and enthusiasm for all sorts of things, but chief among these, her passion for lighting.

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Tribute

March/April 2021

TONY OWNSWORTH, FSLL, PAST PRESIDENT The SLL was most fortunate that Liz became its secretary during my year as president, from 2007-2008, for immediately on arrival her enthusiasm, organisational abilities and personal commitment created an environment that enabled all in the executive to function more effectively, leading ultimately to the ever increasing success the society has experienced since then. I am aware of the great and extensive contribution Liz made to the society and our industry, and I will always remember her for her qualities of kindness and a genuine willingness to help in the time of need. Liz was a very special person, who will be missed by all who knew her.

challenging anyone in the opposition to take possession. After the initial year of Ready Steady Light where we were running around putting plugs on things, Liz and I worked together for the next 10 years turning the event into what it is today. At its peak we had 19 teams competing, which took some organisation and couldn’t have been done without Liz’s hard work in assembling the kit from all the different manufacturers. The last time we spoke was just before Christmas. I would always get a birthday text on Christmas Day. She never forgot.

STEPHEN LISK, FSLL, FCIBSE, PAST PRESIDENT OF SLL AND CIBSE While Liz was widely respected for her contribution to the lighting community, she was also passionate about photography, enjoyed getting stuck in to support good causes, recently volunteering at her local foodbank and, of course, her beloved football team, Leeds United. As a friend, one of the things I most admired about Liz was her conviction to always be herself, to be honest and speak her mind even when it was difficult to do so. Her drive and determination to make things happen, her ability to get people on

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The award-winning Iron Bridge

Durdle Door in Dorset, lit by Michael Grubb Studio for NoHL

It was the time that Concord and Marlin were married together and the lighting design office was centred at Feltham in Middlesex. We needed a new designer and I was introduced to Liz from the sales desk at Concord in Newhaven. Both the potential commute plus the lack of any experience in lighting design, would suggest that this was not a good match, but Liz convinced me. She had a good product knowledge and a drive not to let things stand in her way. As you can imagine she was not backward in coming forward if there was something she needed to know, and quickly grasped the aspects of lighting design that would allow her to progress. As she gained in confidence we started to introduce her to the world of the SLL and the rest really is history. After a couple of years I returned to Philips to lead the design team and Liz followed four months later, a move which allowed her to widen her knowledge with different applications. It was there that she undertook the UCL masters degree to establish her credentials as an independent lighting designer. She was soon working on many and varied projects but the one we talked about most was the Iron Bridge. I remember one day we were discussing the colour of rust. I do remember at the end of a company business day a football match being arranged before dinner. Liz was a keen rugby follower but she was just as passionate about football. As I watched from a distance Liz could be seen charging on to the pitch in full kit

MIKE SIMPSON, FSLL, FCIBSE, PAST PRESIDENT OF SLL AND CIBSE

Tribute

board to get things done, and her sense of fun and good humour, were qualities that she will be fondly remembered for.

DAN LISTER, FSLL, REGIONAL REPRESENTATIVE AND COUNCIL MEMBER, CIBSE YORKSHIRE Having heard a lot about her, I finally met Liz in person in 2014. At this time she was president elect of the SLL and following a long day of committee meetings convention would dictate a number of us would retire to the pub in Balham for a small tipple before dispersing home. Liz would muse on what her presidential year should comprise. I recall one such evening when she decreed, with a cheeky grin (which I grew to know meant trouble) 'we' should do something 'big' to celebrate the Unesco International Year of Light… but what should that be? There were lots of crazy ideas, lots of downright silly ideas, lots of laughs, but out of this smelting pot came the genesis of what became known as the Night of Heritage Light and before the band of lighters separated for our different trains north we had all willingly accepted the King's (or rather Queen's) Shilling.

March/April 2021

While the majority would put such ideas down to 'pub banter' to be forgotten by bedtime, this was not Liz. The two hour(ish) journeys home from London offered time for contemplation and to plot; emails continued to flow as we began to sober. Liz often struggled with insomnia and by morning a fully formed plan of attack had been created as to how to convert pub chatter into reality. Cheeky and tenacious, with an infectious enthusiasm for whatever she put her mind to she had the incredible ability to pull people into her slipstream. Most people would have been content to finish on the spectacular high of NoHL, but not Liz. She was determined that NoHL should have a 'legacy', so she soon had us back in the pub… plotting how we could take it on tour to the regions and increase the opportunity for more SLL members to get involved as well as reach the next generation of designers. We decided on her (and my) beloved Yorkshire, attaching ourselves to the Illuminating York festival in 2016 to deliver NoHL#2: lighting two scheduled monuments (Liz leading the design for one) for the evening pre-festival. But our main event was to deliver the Pockets of Light (PoL) Stem initiative. This had a group of volunteers going into four schools, spreading the word about light and lighting design, as well offering each a site and the opportunity for the students to design a lighting installation for the festival, to be delivered by SLL members. It was in this context that you often saw Liz at her best; with a presentation style that was relaxed, captivating her audience with infectious enthusiasm, whether they be a class of 10-year-olds or a room full of seasoned professionals. Liz was incredibly proud of her work, none more so than the fantastic Lux Award-winning Iron Bridge. A long-running project that was forged from Liz's passion for lighting and an inner drive to do the right thing and do it right. We had joked for years that there was a book's worth of stories gathered through the journey to lighting the bridge, but at the very least we knew we would get an entertaining evening's presentation. As recently as Christmas we had been in discussions to finalise

a date when she could share the story with us. Liz was a warm, open, generous friend who wore her heart on her sleeve, and had a natural gift for telling a story well. She pined for a time where she could meet her 'Light Minded' friends and regale us all with the tales of the bridge that was finally lit. Liz, you leave a huge hole in our lighting heart.

JON ESTELL, MSLL, HEAD OF SPECTRAL LIGHTING UK We need more people like Liz Peck in this world. She was kind, trustworthy, loyal, sincere, a constant in a madly changing world. And she was always giving without a hint of ego. Liz and I worked at Concord in what are often called the ‘glory days’ when the great and sorely missed design director Janet Turner tirelessly championed lighting design, which back in the late 1990s was hardly recognised. Janet’s influence resonated with us both (we spoke about it often) and was manifest in Liz’s passion for lighting and her desire to better educate the world in best practice for lighting design. Liz always talked with pride about her work for the SLL. But above all she had a warmth that endeared many. Ask anyone in the lighting industry and I doubt they will not have heard of Liz Peck. She made friends easily and talked with enthusiasm and spirit. She likened the lighting industry to a family. And when a family loses a loved one we mourn their passing but celebrate their impact on our lives. Perhaps my favourite memory of Liz more recently was when she greeted Simon Fisher and I in Shrewsbury with an incredibly generous cheque for a Land's End to John O’Groats charity bike ride that Simon and I were undertaking as the ‘Lightly Lads’. The lighting community had been incredibly supportive and Liz was instrumental in promoting the cause. She was determined to hand over the cheque in person and was absolutely glowing with pride. The beaming smile she had when presented with a sponsor's jersey with ‘LPA Lighting’ on the front was the first photograph I looked at when I heard of her passing. Light up heaven Liz.

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LR&T essentials

March/April 2021

AN OFFICE POINT OF VIEW Iain Carlile looks at three of the latest papers published online by Lighting Research and Technology, all of which focus on issues in the workplace eople spend up to 90 per cent of their time indoors, say Batool et al, and the visual connection to the outside provided by windows plays an important role in ensuring a person’s physical and psychological wellbeing. They present a study to define suitable methods and metrics to measure view performance in an urban environment. Participants in the study observed three different photographic views in laboratory conditions. The data collected was based on eye-tracking, subjective preference and verbal reasoning. A link was found between the preference for a scene and a greater degree of visual exploration, with a greater number of saccades (rapid movements of the eye that abruptly change the point of fixation) and higher occurrence of fixations. Views containing people, well-maintained buildings and ordered colours were typically preferred, while green and natural elements led to higher preference ratings. The authors suggest that this pattern of eye movement could guide the criteria for framing views and window design, although they note that in a real world setting other factors such as the position of the person in the interior, internal view, dynamic quality of daylight, long-term exposure and so on may also have an influence on a person’s preference of view. Considering a different aspect of views from the interior to the exterior, Pierson et al examine discomfort glare caused by daylight. The authors note that none of the 20 existing models for predicting discomfort glare from daylight accurately predict it. They suggest

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that the addition of different factors may help to improve the models’ predictions, one such factor being the socio-environmental context of the observer. They conducted an evaluation of discomfort glare from daylight in office buildings from four different socioenvironmental contexts in Chile, Belgium, Japan and Switzerland. Evaluations included both subjective assessments and physical measurements made from the office desks of 211 participants. The results revealed that the socioenvironmental context did not appear to influence the perceived daylight discomfort glare experienced by the participants. This suggests that the results from discomfort glare research from around the world could be globalised and compared without being influenced by this factor. Van Duijnhoven et al’s paper presents the findings of a field study which looks at office workers’ personal lighting

conditions. Over a period of 10 days in spring 2017, 62 Dutch office workers aged 49.7 (+/- 11.4) years were continuously measured, and self-reported activities and locations. Personal lighting conditions were interpreted based on four factors which may initiate non-visual effects of light, namely light quantity, spectrum, timing and duration of light. Large individual differences were found between the subjects’ measurements for daily luminous exposure, illuminance, correlated colour temperature and irradiance. The average illuminance (for all participants) peaked three times across the course of the day, in the morning, during lunchtime and at the end of the afternoon. It was also found that on average the participants were only exposed to an illuminance above 1000 lux for 72 minutes a day. The authors note that while the study is limited, the findings give an in-depth insight into the possibilities for interpreting personal lighting conditions and their effects beyond vision on office workers. t Typical view conditions in Chile, Belgium, Japan and Switzerland (Pierson et al)

Iain Carlile, FSLL, is a past president of the SLL and a senior associate at dpa lighting consultants

Lighting Research and Technology: OnlineFirst In advance of being published in the print version of Lighting Research and Technology (LR&T), all papers accepted for publishing are available online. SLL members can gain access to these papers via the SLL website (www.sll.org.uk) View preference in urban environments A Batool, P Rutherford, P McGraw, T Ledgeway and S Altomonte Is there a difference in how people from different socio-environmental contexts perceive discomfort due to glare from daylight? C Pierson, B Piderit, T Iwata, M Bodart and J Wienold Personal lighting conditions of office workers: An exploratory field study J van Duijnhoven, MPJ Aarts and HSM Kort

Events 2021

For details of all upcoming webinars, go to: www.cibse.org/ society-of-light-and-lighting-sll/sll-events/upcoming-webinarsand-online-content For previously recorded CPD webinars (including regional webinars), go to: www.cibse.org/society-of-light-and-lighting-sll/ sll-events/past-presentations

AVAILABLE WEBINARS INCLUDE DELIVERING THE CIRCULAR ECONOMY FOR THE LIGHTING INDUSTRY SLL and CIBSE Home Counties South West Chair: Hakeem Makanju, CIBSE HCSW regional chair, and David Mooney, SLL representative for HCSW Speakers: Bob Bohannon FSLL, SLL president; Kristina Allison, CEng MCIBSE MSLL, chair of the SLL education and membership committee; Roger Sexton, FSLL, business development for Stoane Lighting; Tim Bowes, MSLL, head of lighting application for Whitecroft Lighting THE ART OF STORYTELLING WITH LIGHT SLL Trotter Paterson Lecture 2020 Speaker: Paule Constable LIGHTING GUIDE (LG) 14: CONTROL OF ELECTRIC LIGHTING Chair: Juliet Rennie, SLL coordinator Speaker: Sophie Parry, FSLL, vice chair of the SLL technical and publications committee, technical applications consultant for Zumtobel Group, author of LG14 LIGHTING THE ICEHOTEL Chairs: Chris Fordham, MSLL, and Juliet Rennie, SLL coordinator Speaker: Luca Roncoroni, architect and creative director of Icehotel Group, Sweden

SLL LR&T APPLYING LIGHT FOR HUMAN HEALTH SYMPOSIUM LIVE (held in November 2020) Speakers include: Prof Russell Foster, Mariana G Figueiro, Luc Schlangen, Mark Rea and Arne Lowden Register to watch the sessions on demand: https://cibse.force.com/s/lt-event?id=a1E3Y00001jWBS7UAO

March- April 2021 Light Lines

Articles inside

AN OFFICE POINT OF VIEW

LIGHT AND SOUL

LIVING EXAMPLES

SOLAR RECYCLE

EVENTS

EDITORIAL

NEWS