Maintenance Factor
| Condition | Factor |
|---|---|
| Very clean | 0.9 |
| Clean | 0.8 |
| Average | 0.7 |
| Dirty | 0.6 |
Utilization Factor
| U.F | Factor |
|---|---|
| U.F | 0.6 |
N = (E x A) / (F x UF x MF)
N = Number of Fittings F = Total Flux (Lumens) from all the Lamps in one Fitting E = Lux Level Required on Working Plane MF = Maintenance Factor A = Area of Room (L x W) UF = Utilisation Factor from the Table for the Fitting to be Used
Recommended Lux level for :
Fixture Lumen:
lux
m
m
%
%
lm
