Left and right: 7 More London (PwC HQ), a 2012 Lighting Design Award winner. Architecture by Foster, lighting by BDP Lighting
SLL/CIBSE IRELAND INTERNATIONAL LIGHTING CONFERENCE
This feature is based on the address Peter Boyce will be giving as one of the four keynote speakers at the SLL/CIBSE Ireland International Lighting Conference in Dublin in April 2013. Entitled ‘Lighting Focus on Energy, Standards and Quality’, the conference will also feature three other keynote speakers: SLL president Iain Macrae will head the energy session; Peter Raynham the standards session; and Mike Simpson new technologies and innovations.
Venue: Croke Park, Dublin. The 80,000 seater stadium is home to the Gaelic Games and was famously visited by the Queen during her Diamond Jubilee.
Date: 14 April 2013.
Cost: Delegate fee is €105. There is an early booking discount (by 28 February) of 10%, as well as a further 10% discount for CIBSE and SLL members. Members of supporting organisations will also get a 10% discount.
More details are available from
kevin.kelly@
dit.ie
measure of success. The retailer does not care about lighting per se, but only about lighting as a tool for increasing sales. The second is that what is desirable lighting depends on the context. Almost all the aspects of lighting that are considered undesirable in one context are attractive in another. The third is that there are many physical
and psychological processes that can influence the perception of lighting quality (Veitch, 2001a and b). It is this inherent variability that makes a single, universally applicable recipe for good quality lighting based on photometric quantities an unreal expectation. If this is so, what is the purpose of the recommendations given in the SLL Code for Lighting? The answer is to eliminate bad lighting. The recommendations do this by making sure that the amount, spectrum and distribution of light provided is enough for whatever the visual system is likely to be asked to do, ensuring that this light will be provided in such a way that it does not cause visual discomfort. Is this enough to ensure good quality lighting? The answer is yes, but only if all that the client and designer have in mind is to avoid complaints from occupants. Unfortunately, this appears to be the limit of ambition of many clients and designers, as is evident to anyone who visits many modern
6 CIBSE Journal December 2012
workplaces. Or am I being too hard on the designers of such places? When it comes to many workplaces, at the design stage, the designer does not know what work is to be done there, where it is to be done, what the furnishings will be like or even what the surface reflectances are to be. In the face of such ignorance, eliminating the bad is about the best that can be expected and applying the SLL recommendations is enough to ensure that the bad is banished. This lack of specific information also goes
a long way to explaining the persistence of the horizontal working plane as a basis of design. Despite the use of ‘task plane’ rather than ‘working plane’ in recent recommendations – and the protests of eminent lighting professionals – the fact is that the horizontal working plane is still the plane of choice for simple lighting calculations. This is because, in the absence of any other information, applying the illuminance recommendations to a horizontal working plane and assuming high-reflectance room surfaces is usually enough to guarantee adequate illumination for most forms of work. But what happens if the client and the designer have greater ambitions than simply avoiding complaints, and are willing to supply additional information about the nature and location of the work, and the furnishing and
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