IN A NEW LIGHT
The new edition of the Code for Lighting has radical changes but how will they be interpreted this time? Jill Entwistle talks to its author, Peter Raynham
N
ow on his fifth version, Peter Raynham is something of a veteran when it comes to updating the Code for Lighting,
an exercise that has to be undertaken rather more often nowadays, to keep pace with fast-moving developments in everything from technology to energy legislation. It used to be revised every seven or eight years but since 2002, his first one as author/ editor, it has been every two or three. ‘There are so many moving targets out
there,’ he says. ‘For example, Part L of the Building Regulations is going to change in 2013, having last been revised in 2010. So 2014 will need a new Code for that reason alone. Others are in the pipeline – the road lighting standard is currently being reviewed; there’s a European daylighting standard on the way.’ Produced by the Society of Light and Lighting’s (SLL) technical and publications
46 CIBSE Journal December 2011
committee, and also involving Peter Boyce and John Fitzpatrick on this edition, the Code is essentially a digest of all the standards relevant to lighting practice in the UK. But as a publication it is not as reactive
as that implies. ‘There is a hard core of material there which is digested from about five or six key standards – we’ve got to reference all the standards because somebody could chase people up for that. But then it’s got all the underpinning of what all those things actually mean. ‘While we might give a value – for
example, you need 50 lux on the wall and 30 lux on the ceiling – we’re saying that would be a reasonable number but really you should be doing better. There are little bits of text peppered through in a commentary to the standard. The aim is to push forward the quality of our lit environment.’
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