Mezzanine Floors, Open and Racking Areas

Mezzanine floors are a good way to utilise floor space and it is not uncommon to see multiple levels in modern warehouses. Mounting heights are significantly reduced so wider optics are required. The density of fittings is also likely to increase so mounting luminaires to self-contained pre-wired trunking can speed up installation time, whilst also allowing for flexibility should the layout of the space change.

For recommended lux levels please see CIBSE : SLL Lighting Guide 1 - The Industrial Environment (2012, updated 2018)

Illumination Levels

Application	Minimum maintained mean illuminance (lux)	Illuminance uniformity (minimum/average)
Goods storage where identification requires only limited perception of detail	100	0.40
Goods storage where identification requires perception of detail	150	0.40
Continuously occupied storage areas where identification requires only limited perception of detail	200	0.40
Continuously occupied storage areas where identification requires perception of detail	300	0.60
Automatic high bay rack stores: Gangway: unmanned	20	0.40
Automatic high bay rack stores: Gangway: manned	150	0.40
Automatic high bay rack stores: Gangway: Control station	150	0.60
Packing and despatch	300	0.60
Loading Bays	150	0.40
Storage rack face*	200	0.40