Print







WACs > Title 51 > Chapter 51-11C > Section 51-11C-405054











51-11C-405053    

51-11C-40506







Agency filings affecting this section







WAC 51-11C-405054









Table C405.5.5.2(2)—Interior lighting power allowances—Space-by-space method.









Table C405.5.2(2)
Interior Lighting Power Allowances—Space-by-Space Method

Common Space-by-Space Types LPD (w/ft2)

Atrium - First 40 feet in height 0.03 per ft. ht.

Atrium - Above 40 feet in height 0.02 per ft. ht.

Audience/seating area - Permanent  

  For auditorium 0.79

  For performing arts theater 2.43

  For motion picture theater 1.14

Classroom/lecture/training 1.24

Conference/meeting/multipurpose 1.23

Corridor/transition 0.66

Dining area  

  Bar/lounge/leisure dining 1.31

  Family dining area 0.89

Dressing/fitting room performing arts theater 0.40

Electrical/mechanical 0.95

Food preparation 0.99

Laboratory for classrooms 1.28

Laboratory for medical/industrial/research 1.81

Lobby 0.90

Lobby for performing arts theater 2.00

Lobby for motion picture theater 0.52

Locker room 0.75

Lounge recreation 0.73

Office - Enclosed 1.11

Office - Open plan 0.98

Restroom 0.98

Sales area 1.68a


Stairway 0.69

Storage 0.63

Workshop 1.59

Building Specific Space-by-space Types

Automotive - Service/repair 0.67

Bank/office - Banking activity area 1.38

Convention center  

  Exhibit space 1.45

  Audience/seating area 0.82

Courthouse/police station/penitentiary  

  Courtroom 1.72

  Confinement cells 1.10

  Judge chambers 1.17

  Penitentiary audience seating 0.43

  Penitentiary classroom 1.34

  Penitentiary dining 1.07

Dormitory living quarters 0.38

Fire stations  

  Engine rooms 0.56

  Sleeping quarters 0.25

Gymnasium/fitness center  

  Fitness area 0.72

  Gymnasium audience/seating 0.43

  Playing area 1.20

Health care clinic/hospital  

  Corridors/transition 0.89

  Emergency 2.26

  Exam/treatment 1.66

  Medical supplies 1.27

  Nursery 0.88

  Nurse station 0.87

  Operating room 1.89

  Patient room 0.62

  Pharmacy 1.14

  Physical therapy 0.91

  Radiology/imaging 1.32

  Recovery 1.15

Hotel  

  Dining area 0.82

  Guest rooms 1.11

  Hotel lobby 1.06

  Highway lodging dining 0.88

  Highway lodging guest rooms 0.75

Library  

  Card file and cataloguing 0.72

  Reading area 0.93

  Stacks 1.71

Manufacturing  

  Corridors/transition 0.41

  Detailed manufacturing 1.29

  Equipment room 0.95

  Extra high bay (˃ 50-foot floor-ceiling height) 1.05

  High bay (25 - 50-foot floor-ceiling height) 1.23

  Low bay (< 25-foot floor-ceiling height) 1.19

Museum  

  General exhibition 1.05

  Restoration 1.02

Parking garage - Garage areas 0.19

Post office  

  Sorting area 0.94

Religious building  

  Audience seating 1.53

  Fellowship hall 0.64

  Worship pulpit/choir 1.53

Retail  

  Dressing/fitting area 0.87

  Mall concourse 1.10

  Sales area 1.68a


Sports arena  

  Audience seating 0.43

  Court sports area - Class 4 0.72

  Court sports area - Class 3 1.20

  Court sports area - Class 2 1.92

  Court sports area - Class 1 3.01

  Ring sports area 2.68

Transportation  

  Air/train/bus baggage area 0.76

  Airport concourse 0.36

  Audience seating 0.54

  Terminal - Ticket counter 1.08

Warehouse  

  Fine material storage 0.95

  Medium/bulky material 0.58

For SI:
1 foot = 304.8 mm, 1 watt per square foot = 11 W/m2.

a
Where lighting equipment is specified to be installed to highlight specific merchandise in addition to lighting equipment specified for general lighting and is switched or dimmed on circuits different from the circuits for general lighting, the smaller of the actual wattage of the lighting equipment installed specifically for merchandise, or additional lighting power as determined below shall be added to the interior lighting power determined in accordance with this line item.

Calculate the additional lighting power as follows:

Additional Interior
Lighting Power
Allowance
= 500 watts + (Retail Area 1 × 0.6 W/ft2) + (Retail Area 2 × 0.6 W/ft2) + (Retail Area 3 × 1.4 W/ft2) + (Retail Area 4 × 2.5 W/ft2).

Where:    

Retail Area 1 = The floor area for all products not listed in Retail Area 2, 3 or 4.

Retail Area 2 = The floor area used for the sale of vehicles, sporting goods and small electronics.

Retail Area 3 = The floor area used for the sale of furniture, clothing, cosmetics and artwork.

Retail Area 4 = The floor area used for the sale of jewelry, crystal and china.

EXCEPTION:
Other merchandise categories are permitted to be included in Retail Areas 2 through 4 above, provided that justification documenting the need for additional lighting power based on visual inspection, contrast, or other critical display is approved by the authority having jurisdiction.

[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-405054, filed 2/1/13, effective 7/1/13.]