Tag Archives: SLL

LightBytes Masterclass, Dublin

Carl Collins, Digital Engineering Consultant, CIBSE

The second LightBytes event of the brand new, peer-reviewed SLL Lighting Knowledge Series will take place in at the Teeling Whiskey Distillery in Dublin on 30 November 2017. In a reworking of the previous Masterclasses, the Society invites participants to a day of peer-reviewed, bite-size presentations focusing on the key factors relating to the following topics — design, specify, build and future.

This year’s speakers are Nick van Tromp and Les Thomas from Fagerhult, Helen Loomes from Trilux, Roger Sexton from Xicato, and Steve Shackleton from Zumtobel.

The guest speaker for this series is BIM and Digital Expert Carl Collins. Carl has over 30 years experience working within engineering environments, including Arup’s unified design group and Arup Associatess. 

Commenting on the new series, SLL President Richard Caple said: “The new format, designed around the PechaKucha style of delivery, is designed to keep the day energised and fast-paced while still delivering and disseminating important information.”

Some of the points that the speakers will address include:—

  • A need to refocus on lighting quality as the number one priority
  • Current standards and metrics in relation to LED light sources
  • Maintenance factors – considering LED life and degradation
  • Lighting controls and the pros and cons of integrated wireless Vs wired systems
  • Sign off and commissioning – confirming that the lighting performs as intended
  • The potential of predictive maintenance with smart lighting
  • The future of lighting controls and how to best utilize the data being gathered
  • The potential for lighting to become a managed service, looking at turnkey solutions and where the design responsibility lies

To conclude each of the topics, Carl Collins will then provide perspective on the role of BIM and digital engineering within lighting. Carl will consider aspects such as the exchange between modelling and calculation software, daylight analysis, product data templates, virtual experience before construction, single model shared ownership and blockchain ordering amongst other topics. Click here to learn more.

All of the presentations are brand new and peer-reviewed, providing the opportunity to add 4.5 hours to participants CPD. Members of the Society can attend at the discounted rate of £49.95 with the standard ticket price at £69.95. Students can also apply for the reduced rate of £29.99 by emailing sll@cibse.org

Click here for further details and to book your place.

SLL Code on Lighting — 2012 Edition Now Available

Dr Kevin Kelly, DIT and Vice-President, SLL with Peter Raynham and Stephen Donohoe, DIT.

The new edition is significantly different to the 2009 edition in a number of ways. First of all the format has changed – instead of the CD format of old the 2012 version has been produced as a book. However, it is also available as a PDF download from the CIBSE Knowledge Portal (https:// www.cibseknowledgeportal.co.uk/).

The content of the Code is also significantly different and these changes were introduced for two reasons. Firstly, the SLL Handbook, which was introduced in 2009, carries a lot of material about lighting equipment and lighting design. Consequently, there was no point repeating that material in the Code.

The second major source of change was the introduction of the new CEN standard on workplace lighting (EN 12464-1:2011 Light and Lighting – Lighting of Work Places Part 1: Indoor Work Places). The recommendations in the new standard have changed in a number of ways:

– Each task now has its own uniformity requirement;

– There is now a requirement for a background illuminance in areas up to 3.5 m away from the task being performed;

– There is a requirement for illuminance on the walls and ceiling although the levels are below that recommended by the SLL;

– There is a requirement to provide a certain amount of semi-cylindrical illuminance in all spaces to make it possible for people to see each other’s faces.

A key point made more explicit in the new edition of the Code relating to requirements for indoor workplaces is that the lighting should be on the stated visual tasks. This has in fact been the case since the 2002 edition, and the term “working plane” has not been used in the Code since 1994. The latest edition of the Code takes this one step further. In the section on indoor workplaces it advises that it is wasteful of energy to light the whole space when a particular task is carried out over a relatively small area.

As well as the section on indoor workplaces, the Code also provides recommendations on “outdoor workplaces” road lighting. Thus it provides, in a single book, the performance requirement for the vast majority of lighting applications. These sections are supported by all of the necessary background information so that all the parameters discussed can be evaluated from first principals. The topics covered include:

– Basic energy and light;
– Luminous flux, intensity, illuminance, luminance and their interrelationships;
– Direct lighting;
– Indirect lighting;
– Photometric datasheets;
– Indoor lighting calculations;
– Outdoor lighting calculations;
– Measurement of lighting installations and interpreting the results;
– Colour;
– Daylight calculations;
– Predicting maintenance factor.

Given the ever-increasing pressure on lighting design to reduce the amount of energy used, there is a specific section on energy. This looks at building regulations, the CEN standard EN 15193 on lighting energy consumption, and some of the voluntary schemes such as BREAM. It also provides advice on how to provide
energy efficient lighting based on the formula of providing the right amount of light, at the right place, for the right time, using the right lighting equipment.

The Code also contains a glossary where all of the lighting terms that are used are defined. This section is based on EN 12665:2011 Light and Lighting – Basic terms and criteria for specifying lighting requirements.

To sum up, the SLL Code is a must-have reference book for anyone involved in the design of lighting. It has been written so that it complements the SLL Handbook and together the two books provide the information necessary to carry out the design of virtually all lighting schemes.