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55 FACILITIES GUIDE | JUNE 2020 Spectator area lighting For the visual comfort of spectators rather than safety or emergency reasons, the lighting level should be at least 10 lux. 5.2 Lighting recommendations for outdoor courts 5.2.1 Lighting requirements Horizontal illuminance Uniformity of illuminance Glare Lamp colour temperature Lamp colour rendering E h average (lux) E min /E h ave. GR (K) Ra Class I > 500* > 0.7 < 50 > 4000 > 80 Class II > 300* > 0.7 < 50 > 4000 > 65 Class III > 200* > 0.6 < 55 > 2000 > 20 Table 4. Summary of the lighting criteria for outdoor courts. The above average horizontal illuminances are maintained values. 5.2.2 Installation recommendations In order to get the appropriate horizontal illuminance on the ground (average level and uniformity) and also a sufficient illuminance level to reveal the ball in flight within the playing volume above the court, while ensuring that players do not suffer from disability glare, positioning and height of luminaires should be carefully considered as well as the choice of luminaire. It is recommended to use sharp cut off luminaires, with accurate light output control, mounted on columns; for a single court, mounting height between 8 and 12 m is generally appropriate to achieve the above conditions. Columns are set up on either side of the TPA, using two to four column positions on both of the longitudinal sides, depending on the required quality of the lighting system (see Fig. 4).