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The CIBSE (Chartedred Institute of Building Engineers) produces a code for Interior Lighting which gives lighting requirements for areas.
This is also replicated in BS EN 12464-1:2002 Light and Lighting - Lighting of work places - Part 1: Indoor work places.
Illuminace (lux)
100
150
200
300
500
750
1000
1500
2000
Activity
Casual seeing
Some perception of detail
Continuosly occupied
Visual tasks moderately easy
Visual tasks moderately difficult
Visual tasks difficult
Visual tasks very difficult
Visual tasks extremely difficult
Visual tasks exceptionally difficult
Area
Corridors, changing rooms, stores
Loading bays, switch rooms, plant rooms
Foyers, entrance halls, dinig rooms
Libraries, sports halls, lecture theatres
General offices, kitchens, laboratories, retail shops
Drawing offices, meat inspection, chain stores
General inspection, electronic assembly, paintwork, supermarkets
Fine work and inspection, precision assembly
Assembly of minute items, finished fabric inspection
Extracts from CIBSE Code for Lighting Part 2 (2002).
Area
Classrooms
Technical drawing rooms
Computer practice rooms
Illuminace
(lux)
300
750
300
Limiting
Glare rating
19
16
19
Educational
Minimum colour
rendering (R
a
)
80
80
80
Area
General lighting
Reading lighting
Simple examinations
Examination & treatment
Illuminace
(lux)
100
300
300
1000
Limiting
Glare rating
19
19
19
19
Healthcare - Wards
Minimum colour
rendering (R
a
)
80
80
80
80
Area
Kitchen
Restaurant, dining room
Self service restaurant
Conference rooms
Illuminace
(lux)
500
-
200
500
Limiting
Glare rating
22
-
22
19
Hotels and Restaurants
Minimum colour
rendering (R
a
)
80
80
80
80
Area
Filling, copying etc.
Writing, typing, reading
Technical drawing
CAD work stations
Conference & meeting
Reception desk
Archives
Illuminace
(lux)
300
500
750
500
500
300
200
Limiting
Glare rating
19
19
16
19
19
22
25
Offices
Minimum colour
rendering (R
a
)
80
80
80
80
80
80
80
Area
Lounge
Kitchens
Bathrooms
Toilets
Illuminace
(lux)
100 - 300
150 - 300
150
100
Limiting
Glare rating
19
-
-
-
Residential - Flats / Bedsits
Minimum colour
rendering (R
a
)
80
80
80
80
Area
Sales area
Till area
Wrapper table
Illuminace
(lux)
300
500
500
Limiting
Glare rating
22
19
19
Retail Premises
Minimum colour
rendering (R
a
)
80
80
80
Area
Practice / dressing rooms
Foyers
Auditoria
Illuminace
(lux)
300
200
100
Limiting
Glare rating
22
-
-
Theatres, Concert Halls and Cinemas
Minimum colour
rendering (R
a
)
80
-
-
There are also some Lighting Guides from CIBSE that gives details for various building types,
for example;
Lighting Guide 7 (2005): Office Lighting
The recommended design maintained illuminance over the task area in any room where office
work is carried out is generally in the range 300 to 500 lux.
Where the tasks are mainly screen based, such as data retrieval or telephone sales, then
illuminances at the lower end of this range should be used.
Where the tasks are mainly document based, such as writing or copy typing, then 500 lux will
be required.
Where there are visually more onerous tasks, such as proof reading or technical drawing, even
higher levels should be considered.
The minimum level set by the Health and Safety Executive for any permanently occupied area
is 200 lux.
Lighting Guide 1 (1989): The Industrial Environment
For recommendations of illuminance, colour rendering and glare see Schedule in the Code for
Lighting of which a summary of key values are given below.
More illuminance values are given for a range of industrial buildings in the Guides.
Area
Lifts
Corridors and stairs
Toilets
Canteens
Mess rooms
Plant rooms
Store rooms
Illuminace
(lux)
100
100
100
300
150-300
150-300
100
Lighting Levels
1...,87,88,89,90,91,92,93,94,95,96 98,99,100,101,102,103,104,105,106,107,...324
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