JCC Catalogue 30

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250 Technical
CIBSE GUIDELINES
Public areas with dark surroundings, including car parks 10 - 50 Lux
Simple orientation for short visits 100 - 150 Lux
Warehouse racking 150 Lux
Warehouses, homes, theatres and archives 150 - 200 Lux
Simple office work and classrooms 300 - 500 Lux
Brighter areas such as bathrooms 150 - 200 Lux
Normal office work with computers 300 - 500 Lux
Supermarkets and workshops 500 - 1000 Lux
How to add interest to lighting
Good lighting design recognises the need for depth of view. Both ambient and accent lighting should be used, whilst combining colour
temperatures to create a more comfortable working environment.
Ambient lighting is the general lighting within an area and typically contributes 80% of the overall lighting level.
– Skytile® is a good example of product designed for ambient lighting.
Accent lighting adds interest and depth to a design and should compliment but not conflict with the ambient lighting.
This can include wall washing, the subtle use of colour, up lighting and spotlighting.
– Starscoop™ and Hybrid9™ are excellent for accent lighting.
Mixing warm & cool coloured lighting within a design can assist a design:
– The ambient lighting can be a cooler temperature to add a more commercial feel.
– Supplement with warm white as accent lighting to create a more dynamic environment.
What is the primary use of the area? The level of light required will depend upon the tasks performed within
the area. See CIBSE guidelines below.
What colours are used within the decor? Dark walls, flooring and furniture can absorb up to 80% of the light.
How much natural daylight enters the area? Windows, exterior doors and skylights impact the level of light within an
environment. To maintain constant light levels the area may require lighting
control such as daylight harvesting (see page 259).
Is the ceiling suspended or solid? Light fittings are often designed for a specific ceiling type. The ceiling within
your application may dictate the relevant fittings required.
Is there electrical provision for wall
mounted lights?
If lighting new areas where fittings do not replace previous lighting, chasing
wiring into the wall may be necessary.
Which regulations are applicable? The 2014 Building Regulations stipulate key attributes that are required for
fittings used within certain areas (see page 256).
What level of maintenance does the area receive? Without regular cleaning, the light output of all light fittings is reduced.
Non-LED fittings require lamps to be replaced dependant upon lamp technology.
Are there environmental considerations? Older lamp technologies such as CDM can considerably add to ambient room
temperatures. Areas with heightened levels of dust, dirt and water may require
a level of IP rating (see page 255).
Building lighting basics
KEY FACTORS TO CONSIDER WHEN LIGHTING A BUILDING
It’s important to understand who will be using the area and what will be the layout. The following is a simple checklist:
What is the recommended light level?