The Constructor

Recommended Values of Illumination for Different Structures

Recommended Values of Illumination for Different Structures

Reading time: 1 minute

Good lighting is an essential aspect of all buildings and structures. The aim of providing good lighting is to encourage the safety of the people inside the building and create a pleasing environment conducive to the interest of the occupants and a sense of their well-being.

This can be achieved by:

  1. Careful planning of the brightness and color pattern within both the surroundings and the working areas to accentuate the important areas.
  2. Using directional lighting to assist perception of task detail and give good model, controlling reflected and direct glare from light sources to eliminate visual discomfort.
  3. In artificial lighting installations, paying attention to the color rendering properties of the light and minimizing flicker from certain types of lamps.
  4. By correlating lighting throughout the building to prevent excessive differences between adjacent areas to reduce the risk of accidents.
  5. By the installation of emergency lighting systems.

The term illumination can be defined as to supply (something) with light: to shine a light on (something): to make (something) clear and easier to understand. This can be achieved by using daylighting, artificial lighting, or a combination of both.

The different locations or structures are grouped into the following sections:

  1. Industrial buildings and process
  2. Offices, schools, and public buildings
  3. Surgeries and hospitals
  4. Hotels, restaurants, shops, and homes.

1. Industrial Buildings and Process

  Recommended Values of Illumination 
Sl.No Visual TasksIllumination Lux
  A. Industrial Buildings and Process 
1.General Factory Areas: 
aCanteens150
bCloak ‚Äďrooms100
cEntrances, corridors, stairs100
2.Factory Outdoor Areas: Stockyards, main entrances, and exit roads, car parks, internal factory roads20
3.Aircraft Factories and Maintenance Hangars: 
aStock parts productions450
bDrilling, riveting, screw fastening, sheet aluminum layout and template work, wing sections, cowling, welding, sub-assembly, final assembly, and inspection300
cMaintenance and repair (hangers)300
4.Assembly Shops: 
aRough work, for example, frame assembly and assembly of heavy machinery150
bMedium  work,  for example,  machined  parts, engine assembly, vehicle body assembly300
cFine    work, for   example,    radio and   telephone equipment, typewriter and office machinery assembly700
dVery fine work, for example, assembly of very small precision mechanisms1500
5Boiler Houses (Industrial): 
aCoal and ash handling100
bBoiler rooms: 
1.Boiler fronts and operating areas100
2.Other areas20 to 50
cOutdoor plants: 
1.Cat-walks20
2.Platforms50
6Electricity Generating Stations (Indoor Locations): 
aTurbine halls200
bAuxiliary equipment, battery rooms, blowers, auxiliary generators, switchgear and transformer chambers.100
cBoiler houses (including operating floors) platforms, coal conveyors, pulverizers, feeders, precipitators, soot and slag blowers70 to 100
dBoiler house and turbine house100
eBasements70
fConveyor  houses,   conveyor   gantries   and  junction towers70 to 100
gControl rooms: 
1.Vertical control panels200 to 300
2.Control desks300
3.Rear of control panels150
4.Switch houses150
hNuclear reactors and steam raising plants: 
aReactor areas, boilers and galleries150
bGas circular bays150
cReactor charge/discharge face200
7Electricity Generating Stations (Outdoor Locations): 
1.Coal unloading areas20
2.Coal storage areas20
3.Platforms, boiler and turbine desks50
4.Transformers and outdoor switchgear100
8Gauges and Tool Rooms: General700
9Inspection Shops (Engineering): 
aRough work, for example, counting and rough checking of stock parts, etc150
bMedium work, for example, ‚Äėgo‚Äô and ‚Äėno go‚Äô gauges and sub-assemblies300
cFine work, for example, radio and telecommunication equipment, calibrated scales, precision mechanisms and instruments700
dVery fine work for example, gauging and inspection of small intricate parts1 500
eMinute work for example, very small instruments3 000
10Iron and Steel Works: 
aMarshalling and outdoor stockyards10 to 20
bStairs, gangways, basements, quarries and loading docks100
cSlab yards, melting shops, ingot stripping, soaking pits, blast-furnace working areas, picking and cleaning and cleaning lines, mechanical plant and pump houses100
dMould preparation rolling and wire mills, mill motor rooms, power and blower houses150
eSlab inspection and conditioning, cold strip mills, sheet and plate finishing, tinning, galvanizing machine and roll shops200
fPlate inspection300
11Machine and Fitting Shops: 
aRough bench and machine work150
bMedium bench and machine work, ordinary automatic machines, rough grinding, medium buffing and polishing300
cFine bench and machine work, fine automatic machines, medium grinding, fine buffing and polishing700
12Motor Vehicle Plants: 
aGeneral   sub-assemblies,   chasis   assembly   and   car assembly300
bFinal inspection450
cTrim shops, body sub-assemblies and body assembly300
dSpray booths450
13Paint Works: 
aGeneral, automatic processes200
bSpecial batch mixing450
cColour matching700
14Paint Shops and Spraying Booths: 
aDipping, firing and rough spraying150
bRubbing, ordinary painting, spraying and finishing300
cFine painting and finishing450
dRetouching and matching700
15Sheet Metal Works: 
aBenchwork,  scribing, pressing, punching, shearing, stamping, spinning, and folding200
bSheet inspection200
16Structural Steel Fabrication Plants: 
aGeneral150
bMarking off300
17Welding and Soldering: 
aGas and arc welding and rough spot welding150
bMedium  soldering,  brazing  and  spot  welding,  for example, domestic hardware300
cFine   soldering   and   spot   welding,   for   example instruments, radio set assembly700
dVery fine soldering and spot welding, for example, radio valves150
18Woodworking Shops: 
aRough sawing and bench work50
bSizing, planning, rough sanding, medium machine and bench work, gluing, and veneering200
cFine  bench  and  machine  work,  fine  sanding  and finishing300

2. Offices, Schools, and Public Buildings

  Recommended Values of Illumination 
Sl.No Visual TasksIllumination Lux
  B.  Offices, Schools and Public Buildings 
1Airport Buildings: 
a)Reception areas (desks)300
b)Customs and immigration halls300
c)Circulation areas and lounges150
2Assembly and Concert: 
a)Foyers and auditorium100 to 150
b)Platforms450
c)Corridors70
d)Stairs100
3Banks: 
a)Counter, typing and accounting book areas300
b)Public areas150
4Cinemas: 
a)Foyers150
b)Auditoria50
c)Corridors70
d)Stairs100
5Libraries 
a)Shelves (stacks)70 to 150
b)Reading rooms (newspapers and magazines)150 to 300
c)Reading tables300 to 700
d)Book repair and binding300 to 700
e)Cataloguing, sorting and stock rooms150 to 300
6Museum’s art Galleries: 
a)Museums: 
1General150
2DisplaysSpecial lighting
b)Art Galleries 
1General100
2Paintings200
7Office: 
a)Entrance halls and reception areas150
b)Conference rooms and executive office300
c)General office300
d)Business machine operation450
e)Drawing office: 
1General300
2Boards and tracings450
f)Corridors and lift cars70
g)Stairs100
h)Lift landings150
i)Telephone exchanges:200
1Manual exchange rooms150
2Main distribution frame rooms 
8School and Colleges: 
a)Assembly halls: 
1General150
2When used for examinations300
3Platforms300
b)Class and lecture rooms: 
1Desks300
2Chalk boards200 to 300
c)Embroidery sewing rooms700
d)Art rooms450
e)Laboratories300
f)Libraries: 
1Shelves, stacks70 to 150
2Reading tables300
g)Offices300
h)Staff rooms and common rooms150
i)Corridors70
j)Stairs100
9Theatres: 
a)Foyers150
b)Auditoria70
c)Corridors70
d)Stairs100

3. Surgeries and Hospitals

  Recommended Values of Illumination 
Sl.No Visual TasksIllumination Lux
  C. Surgeries and Hospitals 
1Dental Surgeries: 
a)Waiting rooms150
b)Surgeries: 
1General300
2ChairsSpecial lighting
c)Laboratories300
2Doctors Surgeries: 
a)Waiting rooms and consulting rooms150
b)Corridors70
c)Stairs100
d)Sight testing (acuity) wall charts and near vision types450
3Hospitals: 
a)Reception and waiting rooms150
b)Wards: 
1General100
2Beds150
c)Operating theatres: 
1General300
2TablesSpecial lighting
d)Laboratories300
e)Radiology departments100
f)Casualty and outpatient departments150
g)Stairs and corridors100
h)Corridors300

4. Hotels, Restaurants, Shops and Homes

  Recommended Values of Illumination 
Sl.No. Visual TasksIllumination Lux
  D. Hotels, Restaurants, Shops, and Homes 
1Hotels: 
a)Entrance halls150
b)Reception and accounts300
c)Dining rooms (tables)100
d)Lounges150
e)Bedrooms: 
1General100
2Dressing tables, bed heads, etc200
f)Writing rooms (tables)300
g)Corridors70
h)Stairs100
i)Laundries200
j)Kitchens200
k)Goods and passenger lifts70
l)Clock-rooms and toilets100
m)Bathrooms100
2Restaurants: 
a)Dining rooms: 
1)Tables100
2Cash desks300
b)Self-carrying counters300
c)Kitchens200
d)Clock-rooms and toilets100
3Shops and Stores: 
a)General areas150 to 300
b)Stock rooms200
4Homes: 
a)Kitchens200
b)Bathrooms100
c)Stairs100
d)Workshops200
e)Garages70
f)Sewing and darning700
g)Reading (casual)150
h)Homework and sustained reading300

FAQs

What is the aim of providing good lighting in a building?

The aim of providing good lighting in a building is to encourage the safety of the people inside the building and create a pleasing environment conducive to the interest of the occupants and a sense of their well-being.

What are the methods to provide good lighting in a building?

To achieve good lighting in a building, the following methods can be followed:
1. Careful planning of the brightness and color pattern within both the surroundings and the working areas to grab the attention of the important areas.
2. Using directional lighting to assist perception of task detail and give good model, controlling reflected and direct glare from light sources to eliminate visual discomfort.
3. In artificial lighting installations, paying attention to the color rendering properties of the light and minimizing flicker from certain types of lamps.
4. By correlating lighting throughout the building to prevent excessive differences between adjacent areas to reduce the risk of accidents.
5. By the installation of emergency lighting systems.

What are the recommended illumination lux values to be maintained in a residential building?

The recommended illumination lux values to be maintained in a residential building is as follows:
a) Kitchens - 200
b) Bathrooms - 100
c) Stairs - 100 
d) Workshops - 200 
e) Garages - 70
f)  Sewing and darning - 700
g) Reading (casual) - 150
h) Homework and sustained reading - 300

Read More

Recessed Lights‚Äď Features and Advantages

Lighting and Ventilation Requirements of Rooms

What are the Installations Required in a Tunnel?

Exit mobile version