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Some Recommended Illuminance Levels Given here is a list of recommended illuminances for various interiors and tasks. Guidance is also given (based on the international recommendation set forth in CIE Report No. 29) as to which quality class should  be used for glare limitation.

   Illuminances The illuminance values in the table are maintained illuminances. The mean value of the iIIuminance at the task
    location must not be lower than the iIIuminance indicated, irrespective of the age of installation.

   Quality Class The quality classes for glare limitation refer to those employed in the CIE Glare Safeguard System described in Sec.     3.2.3, page 137 of this manual. At the time of going to press, however, the CIE is busy with reviewing the whole question of glare     limitation and recommended quality classes. In the meantime for the purposes of selecting the luminance limit curve appropriate to a     particular combination of quality class and iIIuminance, the term Service iIIuminance employed in Fig. 3.5 page 138 should be     interpreted as being equal to the maintained iIIuminance.
 
BUILDING AREA
Maintained
illuminanace (Iux)
Qualityclass
General building areas
Circulation areas, corridors
100
D-E
Cloakrooms, toilets
100
C-D
Stores, stockrooms
100
D-E
Stairs, escalators
150
C-D
Assembly shops
    
Rough work :
    
Heavy machinery assembly
300
C-D
Medium work :
Engine assembly, vehicle body assembly
500
B-C
Fine work :
Electronic and office machinery assembly
750
A-B
Very fine work :
Instrument assembly
1500
A-B
Chemical, plastics and rubber industry
    
Automatic processes
150
D-E
General interior plant areas
300
C-D
Control rooms, laboratories
500
C-D
Pharmaceutical manufacture
500
C-D
Rubber type manufacturing
500
C-D
Inspection
750
A-B
Colour matching
1000
A-B
Clothing factories
    
Pressing
500
A-B
Sewing
750
A-B
Inspection
1000
A-B
Electrical industry
    
Cable manufacturing
300
B-C
Coil winding (medium size)
500
A-B
Assembly of telephones, radios, TVs
1000
A-B
Testing, adjustingAssembly of ultra-precision parts,
1000
A-B
Electronic components
1500
A-B
Food industries
    
Automatic processes
200
D-E
General working areas
300
C-D
Hand decorating, inspection
500
A-B
Foundries
    
Foundry bays
200
D-E
Rough moulding , rough core making
300
C-D
Fine moulding, core making, inspection
500
A-B
Glass works and pottery
Furnace rooms
150
D-E
Mixing rooms, forming , moulding, kiln rooms
300
C-D
Finishing , enamelling, glazing
300
B-C
Machine grinding and engraving
500
B-C
Hand grinding and engraving
750
A-B
Fine work, e.g. decorative engraving,Hand painting
1000
A-B
Iron and steel works
Fully-automatic production plants
50
D-E
Semi-automatic production plants
200
D-E
Permanently-manned work stations in production plants
300
D-E
Control platforms and inspection
500
A-B
Leather industry
    
General working areas
300
B-C
Pressing , cutting, sewing, shoe production
750
A-B
Grading, matching, quality control
1000
A-B
Machine and fitting shops
    
Forging of small parts
200
D-E
Rough bench and machine work, welding
300
C-D
Medium bench and machine work
500
B-C
Fine bench and machine work, inspection and testing
750
A-B
Very fine work, gauging and inspection of small intricate parts
1500
A-B
Paint shops and spray booths
    
Dipping, rough spraying
500
C-D
General painting and spraying
750
B-C
Fine painting, spraying and finishing, Retouching and matching
1500
A-B
Paper mills
   
Automatic processes
200
D-E
Paper and board making
300
C-D
Inspection, sorting
500
A-B
Printing works and bookbinderies
    
Printing machine room
500
C-D
Bookbinding
500
A-B
Composing rooms, proof reading,Trimming, embossing
750
A-B
Retouching, etching
1000
A-B
Colour reproduction and printing
1500
A-B
Steel and copper engraving
2000
A-B
Textile industries
    
Bale opening
200
D-E
Carding, drawing
300
D-E
Spinning, winding, reeling, dyeing Beaming, spinning (fine counts).
500
C-D
twisting, weaving
750
A-B
Sewing, burling, inspection
1000
A-B
Woodworking shops and furniture Manufacture
   
Saw mills
200
D-E
Bench work, assembly
300
C-D
Wood-working machines
500
B-C
Finishing
750
A-B
Final inspection, quality control
1000
A-B
Offices
    
Archives
200
C-D
Conference rooms
300
A-B
General offices with typing,screen-supported activities, computer rooms
500
A-B
Deep, open-plan offices
750
A-B
Drawing offices
1000
A-B
Schools
Workshops, libraries, reading rooms Class-rooms, lecture theatres,
300
A-B
Laboratories, art rooms, gymnasiums
500
A-B
Shops and stores
Convention shops
300
B-C
Self-service shops and showrooms
500
B-C
Supermarkets, department stores
750
B-C
Public Buildings
Cinemas :
auditorium
50
B-C
foyer
150
B-C
Theatres and concert halls :
auditorium
100
B-C
foyer
200
B-C
Museums and art galleries :
light-sensitive exhibits
150
B-C
exhibits insensitive to light
300
B-C
Sacred buildings :
nave
100
B-C
choir, altar, pulpit
300
B-C
Homes, hotels and restaurants
Homes :
Bedrooms
general
50
B-C
bed-head
200
B-C
Bathrooms :
general
100
B-C
shaving, make-up
500
B-C
Living-rooms :
general
100
B-C
reading, sewing
500
B-C
Stairs
100
B-C
Kitchens :
general
300
B-C
working areas
500
B-C
Work room
300
B-C
Nursery 100 B-C
100
B-C
Hotels and restaurants :
Dining rooms
200
B-C
Guest rooms, bathrooms :
general
100
B-C
local
300
B-C
Entrance halls, general conference rooms
300
B-C
Kitchens
500
B-C
Hospitals
Corridors :
night
50
A-B
daytime / evening
200
A-B
Wards :
circulation at night
1
A-B
observation at night
5
A-B
general lighting
150
A-B
simple examination, reading
300
A-B
Examination rooms :
general lighting
500
A-B
local examination lighting
1000
A-B
Intensive therapy :
bedhead
50
A-B
observation
750
A-B
Nurses stations
300
A-B
Operating theatres :
pre-op room
500
A-B
general theatre lighting
1000
A-B
local
100000
A-B
Autopsy rooms :
general lighting
750
A-B
Local
1000
A-B
Laboratories and pharmacies :
General lighting
750
A-B
local
100000
A-B
Consulting rooms :
general lighting
750
A-B
local
100000
A-B
     
     
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