RECOMMENDED VALUES OF ILLUMINATION AND LIMITING VALUES OF GLARE INDEX AS PER IS: 3646 Process Illumination lux Limiting glare index Factory areas Entrances, coridors,stairs 100 . Canteens 150 . Cloak rooms 100 . Stockyards,main entrances and exit road,car parks 20 . Stock parts production 450 25 . Drilling,rvetting,screw fastening welding,coiling,final assembly and inspection 300 25 Maintenance and repairs 300 25 Assembly shops . Rough work 150 28 Medium work 300 25 Fine work 700 22 Very Fine work 1500 19 Boiler Houses . Coal and ash handling 100 . Boiler fronts and operating areas 100 . Other areas 20 to 50 . Cat walks 20 . Platforms 50 . UNITS OF MEASUREMENT QUANTITY DIMENSIONAL SYMBOL NAME OF UNIT SYMBOL Length l Metre m Time t Second s Mass m kilogram kg Plane angle aßg radian rad Force F newton N Energy E Joule J Work W Joule J Power P watt W Pressure or Stress P pascal pa Frequency u,f hertz Hz Heat Q joule J Temperature T degree kelvin K Luminous Flux ø lumen lm Luminous Intensity IY candela cd Qty of Electricity Q coulomb C Electrical Potential V volt V Current I amphere A Resistance R ohm w Conductance G siemens F Capacitance C farad S Inductance L henry H Magnetic flux ø weber Wb

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