Wash. Admin. Code § 51-11C-405054
Table C405.4.2(2)
Interior Lighting Power Allowances-Space-by-Space Method
Common Space-by-Space Typesa, j | LPD (w/ft2) |
Atrium - Less than 20 feet in height | 0.39 |
Atrium - 20 to 40 feet in height | 0.48 |
Atrium - Above 40 feet in height | 0.60 |
Audience/seating area - Permanenti In an auditorium In a gymnasium In a motion picture theater In a penitentiary In a performing arts theater In a religious building In a sports arena Otherwise | 0.61 0.23 0.27 0.67 1.16 0.72 0.33 0.23 |
Banking activity areai | 0.61 |
Breakroom (see lounge/breakroom) | |
Classroom/lecture hall/training room In a penitentiary Otherwiseh | 0.89 0.71 |
Computer room, data center | 0.94 |
Conference/meeting/multipurpose | 0.97 |
Confinement cell | 0.70 |
Copy/print room | 0.31 |
Corridor In a facility for the visually impaired (and not used primarily by the staff)b In a hospital In a manufacturing facility Otherwisec, i | 0.71 0.71 0.41 0.41 |
Courtroomc | 1.20 |
Dining area In a penitentiary In a facility for the visually impaired (and not used primarily by the staff)b In a bar/lounge or leisure diningi In cafeteria or fast food dining In a family dining areai Otherwise | 0.42 1.27 0.86 0.40 0.60 0.43 |
Electrical/mechanical | 0.43 |
Emergency vehicle garage | 0.52 |
Food preparation | 1.09 |
Guest rooma, b | 0.41 |
Laboratory In or as a classroom | 1.11 |
Otherwise | 1.33 |
Laundry/washing area | 0.53 |
Loading dock, interior | 0.88 |
Lobbyc In a facility for the visually impaired (and not used primarily by the staff)b For an elevator In a hotel In a motion picture theater In a performing arts theater Otherwise | 1.69 0.65 0.51 0.23 1.25 0.84 |
Locker room | 0.52 |
Lounge/breakroomi In a health care facilityc, i Otherwisei | 0.42 0.59 |
Office Enclosed [LESS THAN EQUAL TO] 250 Enclosed [GREATER THAN] 250 Open plan | 0.74 0.66 0.61 |
Parking area, interior | 0.15 |
Pharmacy area | 1.66 |
Restroom In a facility for the visually impaired (and not used primarily by the staff)b Otherwisei | 1.26 0.63 |
Sales area | 1.05 |
Seating area, general | 0.23 |
Stairway (see space containing stairway) | |
Stairwellc, i | 0.49 |
Storage room [LESS THAN] 50 ft2 50-100 ft2 All other storage | 0.51 0.38 0.38 |
Vehicular maintenance | 0.60 |
Workshop | 1.26 |
Building Specific Space-by-Space Typesa | LPD (w/ft2) |
Automotive (see vehicular maintenance) | |
Convention center - Exhibit spacei | 0.61 |
Dormitory living quartersa, b | 0.50 |
Facility for the visually impairedb In a chapel (and not used primarily by the staff)b In a recreation room (and not used primarily by the staff)b | 0.70 1.77 |
Fire stations Sleeping quarters | 0.23 |
Gymnasium/fitness center In an exercise area In a playing area | 0.90 0.85 |
Health care facilityc, i In an exam/treatment room In an imaging room In a medical supply room In a nursery In a nurse's station In an operating room In a patient room In a physical therapy room In a recovery room | 1.40 0.94 0.62 0.92 1.17 2.26 0.68 0.91 1.25 |
Library In a reading areai In the stacks | 0.96 1.10 |
Manufacturing facility In a detailed manufacturing area In an equipment room In an extra high bay area (greater than 50-foot floor-to-ceiling height) In a high bay area (25 - 50-foot floor-to-ceiling height) In a low bay ([LESS THAN] 25-foot floor-to-ceiling height) | 0.80 0.76 1.42 1.24 0.86 |
Museum In a general exhibition areai In a restoration room | 0.31 1.10 |
Performing arts theater dressing/fitting room | 0.41 |
Post office - Sorting area | 0.76 |
Religious buildings In a fellowship halli In a worship/pulpit/choirareai | 0.54 0.85 |
Retail facilities In a dressing/fitting room In a mall concourse | 0.51 0.82 |
Sports arena - Playing area For a Class 1 facilityd For a Class 2 facilitye For a Class 3 facilityf For a Class 4 facilityg | 2.94 2.01 1.30 0.86 |
Transportation In a baggage/carousel area In an airport concourse At a terminal ticket counteri | 0.39 0.25 0.51 |
Warehouse - Storage area For medium to bulky palletized items For smaller, hand-carried items | 0.33 0.69 |
For SI: 1 foot = 304.8 mm, 1 watt per square foot = 10.76 W/m2
. a In cases where both a common space type and a building area specific space type are listed, the building area specific space type shall apply.
b A facility for the visually impaired is a facility that is licensed or will be licensed by local or state authorities for senior long-term care, adult daycare, senior support or people with special visual needs.
c Additional lighting power allowance of 0.2 watts per square foot for the purpose of highlighting art or exhibits. This additional power allowance shall be permitted only where the specified lightinged in addition to and controlled separately from general lighting in accordance with Section C405.2.6. This additional power allowance shall be used only for the specified luminaires and shused for any other purpose and it shall not be added to any other space or the interior power allowance.
d Class I facilities consist of professional facilities; and semiprofessional, collegiate or club facilities with seating for 5,000 or more spectators.
e Class II facilities consist of collegiate and semiprofessional facilities with seating for fewer than 5,000 spectators; club facilities with seating between 2,000 and 5,000 spectators; and amateur league and high school facilities with seating for more than 2,000 spectators.
f Class III facilities consist of club, amateur league and high school facilities with seating for 2,000 or fewer spectators.
g Class IV facilities consist of elementary school and recreational facilities; and amateur league and high school facilities without provisions for spectators.
h For classrooms, additional lighting power allowance of 4.50 W/lineal foot of white or chalk boards for directional lighting dedicated to white or chalk boards.
i Additional lighting power allowance of 0.15 W/ft2 for ornamental lighting. Qualifying ornamental lighting includes luminaires that are specifically used in a decorative manner. This additional power shall be permitted only where the specified lighting is installed in addition to and controlled separately from display or general lighting in accordance with Section C405.2.6. This additional power shall be used only for the specified luminaires and it shall not be added to any other space or the interior power allowance.
j Where a space is designated as unfinished, neither the area nor the lighting power in the space shall be calculated as part of the LPA.
Wash. Admin. Code § 51-11C-405054
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-405054, filed 2/1/13, effective 7/1/13.