What is the minimum uniformity required for most competitive sports?

The ratio of minimum to average illuminance (E_min/E_avg) should be at least 0.7, as recommended in Annex A.

What are the key lighting considerations for swimming pools?

Controlling reflected glare from the water surface, ensuring underwater visibility, and using fixtures with high IP ratings for safety.

What is the recommended color rendering index (Ra) for sports lighting?

A minimum Ra of 80 is recommended for good color distinction, especially for televised events (Clause 6.4).

IS 9091

: 1993

Code of Practice for Interior Lighting of Buildings

CurrentSpecializedCode of PracticeBIMMEP · Swimming Pools and Sports Facilities

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This code of practice provides recommendations for the interior lighting of swimming pools and various indoor sports facilities. It specifies key lighting parameters like illuminance levels, uniformity, glare control, and color rendering to ensure visual comfort and safety for both players and spectators.

Provides recommendations for lighting installations in building interiors to ensure adequate illumination and visual comfort.

Quick Reference Values

Recommended illuminance for recreational swimming150 lux

Recommended illuminance for competitive swimming500 lux

Recommended illuminance for competitive basketball750 lux

Recommended uniformity (E min/E avg) for competitive sports0.7

Limiting Glare Index (UGR L) for competitive tennis19

Minimum Color Rendering Index (Ra) for competitive sports80

Practical Notes

Pay close attention to glare control (direct and reflected), especially for sports with fast-moving, high-flying objects (e.g., badminton) and over water surfaces in swimming pools.

The choice and positioning of luminaires are critical to achieve the specified uniformity and avoid shadows that could hinder play or viewing.

For swimming pools, ensure all electrical fixtures have the appropriate Ingress Protection (IP) rating (e.g., IP67/IP68) for wet and corrosive environments.