Design Basis-Lighting Standard Value

Residential Building

Standard value of residential building lighting

Room or place		Reference plane and its height	Standard value of illuminance (Lx)	Ra
living room	General activity	0.75m horizontal	100	80
	Writing, reading		300
bedroom	General activity	0.75m horizontal	75	80
	Bedside, reading		150
Dinner Room		0.75m horizontal	150	80
Kitchen	General activity	0.75m horizontal	100	80
	Operation plate	mesa	150
Bathroom		0.75m horizontal	100	80
Note: Mixed lighting should be used.

Commercial building lighting standard value

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
General store business hall	0.75m horizontal	300	22	80
High-end store business hall	0.75m horizontal	500	22	80
General supermarket business hall	0.75m horizontal	300	22	80
High-end supermarket business hall	0.75m horizontal	500	22	80
Cashier	mesa	500	/	80

Standard value of library building lighting

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
General reading room	0.75m horizontal	300	19	80
Reading rooms of national, provincial and other important libraries	0.75m horizontal	500	19	80
Old age reading room	0.75m horizontal	500	19	80
Rare Book and Classic Book Reading Room	0.75m horizontal	500	19	80
Showroom, catalog hall (room) cashier hall	0.75m horizontal	300	19	80
Warehouse of books	0.25m horizontal	50	/	80
Workshop	0.75m horizontal	300	19	80

Standard value of office building lighting

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
General office	0.75m horizontal	300	19	80
High-end office	0.75m horizontal	500	19	80
Meeting Room	0.75m horizontal	300	19	80
Reception room, front desk	0.75m horizontal	300	/	80
Business Hall	0.75m horizontal	300	22	80
Designing Room	Actual working surface	500	19	80
Document sorting, copying, publishing room	0.75m horizontal	300	/	80
Data Archive Room	0.75m horizontal	200	/	80

Hotel building lighting standard value

Room or place		Reference plane and its height		Standard value of illuminance (Lx)	UGR	Ra
guest room	General activity area	0.75m horizontal		75	/	80
	Bedside	0.75m horizontal		150	/	80
	Reading Desk	Mesa		300	/	80
	Bathroom	0.75m horizontal		150	/	80
Canteen			0.75m horizontal	200	22	80
Western restaurants, bars, coffee shops		0.75m horizontal		100	/	80
multi-purposed meeting room		0.75m horizontal		300	22	80
Foyer, general service desk		Ground		300	/	80
Lounge		Ground		200	22	80
Room floor corridor		Ground		50	/	80
Kitchen		Ground		200	/	80
Laundry		0.75m horizontal		200	/	80

School building lighting standard value

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
Classroom	Class desktop	300	19	80
Laboratory	Experimental desktop	300	19	80
Art classroom	Class desktop	500	19	80
Multimedia Classroom	0.75m horizontal	300	19	80
Classroom blackboard	Blackboard plane	500	/	80

Hospital building lighting standard value

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
Treatment room	0.75m horizontal	300	19	80
Laboratory	0.75m horizontal	500	19	80
Operating room	0.75m horizontal	750	19	80
Consultation room	0.75m horizontal	300	19	80
Waiting room, registration hall	0.75m horizontal	200	19	80
Ward	Ground	100	22	80
Nurse station	0.75m horizontal	300	/	80
Pharmacy	0.75m horizontal	500	19	80
Intensive Care Unit	0.75m horizontal	300	19	80

Standard value of lighting in exhibition hall

Room or place	Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
General exhibition hall	Ground	200	22	80
High-end exhibition hall	Ground	300	22	80
Note: Ra for exhibition halls higher than 6m can be reduced to 60.

Standard value of lighting quality for sports buildings

Type	GR	Ra
No color TV broadcast	50	65
Color TV broadcast	50	80
Note: The GR value is only applicable to outdoor sports venues.

Standard value of lighting in public places

Room or place		Reference plane and its height	Standard value of illuminance (Lx)	UGR	Ra
Hall	Ordinary	Ground	100		60
Hall	High-end	Ground	200		80
Corridor, flow area	Ordinary	Ground	50		60
Corridor, flow area	High-end	Ground	100		80
Stairs, platforms	Ordinary	Ground	30		60
Stairs, platforms	High-end	Ground	75		80
Escalator		Ground	150		60
Toilet, bathroom	Ordinary	Ground	75		60
Toilet, bathroom	High-end	Ground	150		80
Elevator lobby	Ordinary	Ground	75		60
Elevator lobby	High-end	Ground	150		80
Lounge		Ground	100	22	80
Storage room, warehouse		Ground	100		60
Garage	Parking Lot	Ground	75	28	60
Garage	Inspection room	Ground	200	25	60
Note: The lighting standard values of power stations and substations of residential and public buildings are selected according to the table.