Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-405054 - Table C405.4.2(2)-Interior lighting power allowances-Space-by-space method

Current through Register Vol. 24-14, July 15, 2024
Table C405.4.2(2)
Interior Lighting Power Allowances-Space-by-Space
				Method
Common Space-by-Space
						  Typesa
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
0.61
In a gymnasium
0.23
In a motion picture theater
0.27
In a penitentiary
0.67
In a performing arts theater
1.16
In a religious building
0.72
In a sports arena
0.33
Otherwise
0.23
Banking activity
						  areai
0.61
Breakroom (see lounge/breakroom)
Classroom/lecture hall/training room
In a penitentiary
0.89
Otherwiseh
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
0.71
In a hospital
0.71
In a manufacturing facility
0.41
Otherwisec,i
0.41
Courtroomc
1.20
Dining area
In a penitentiary
0.42
In a facility for the visually
impaired (and not used
primarily by the
						  staff)b
1.27
In a bar/lounge or leisure
diningi
0.86
In cafeteria or fast food
dining
0.40
In a family dining
						  areai
0.60
Otherwise
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
1.69
For an elevator
0.65
In a hotel
0.51
In a motion picture theater
0.23
In a performing arts theater
1.25
Otherwise
0.84
Locker room
0.52
Lounge/breakroomi
In a health care
						  facilityc,i
0.42
Otherwisei
0.59
Office
Enclosed [LESS THAN EQUAL TO] 250
0.74
Enclosed [GREATER THAN] 250
0.66
Open plan
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
1.26
Otherwisei
0.63
Sales area
1.05
Seating area, general
0.23
Stairway (see space containing stairway)
Stairwellc,i
0.49
Storage room
< 50 ft2
0.51
50-100 ft2
0.38
All other storage
0.38
Vehicular maintenance
0.60
Workshop
1.26
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
0.70
In a recreation room (and not
used primarily by the
						  staff)b
1.77
Fire stations
Sleeping quarters
0.23
Gymnasium/fitness center
In an exercise area
0.90
In a playing area
0.85
Health care
						  facilityc,i
In an exam/treatment room
1.40
In an imaging room
0.94
In a medical supply room
0.62
In a nursery
0.92
In a nurse's station
1.17
In an operating room
2.26
In a patient room
0.68
In a physical therapy room
0.91
In a recovery room
1.25
Library
In a reading areai
0.96
In the stacks
1.10
Manufacturing facility
In a detailed manufacturing
area
0.80
In an equipment room
0.76
In an extra high bay area
(greater than 50-foot floor-
to-ceiling height)
1.42
In a high bay area (25 - 50-
foot floor-to-ceiling height)
1.24
In a low bay (< 25-foot
floor-to-ceiling height)
0.86
Museum
In a general exhibition
						  areai
0.31
In a restoration room
1.10
Performing arts theater dressing/
fitting room
0.41
Post office - Sorting area
0.76
Religious buildings
In a fellowship halli
0.54
In a worship/pulpit/choir
area 
						  i
0.85
Retail facilities
In a dressing/fitting room
0.51
In a mall concourse
0.82
Sports arena - Playing area
For a Class 1
						  facilityd
2.94
For a Class 2
						  facilitye
2.01
For a Class 3
						  facilityf
1.30
For a Class 4 facility 
						  g
0.86
Transportation
In a baggage/carousel area
0.39
In an airport concourse
0.25
At a terminal ticket
counteri
0.51
Warehouse - Storage area
For medium to bulky
palletized items
0.33
For smaller, hand-carried items
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 bng 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 shall be permitted only where the specified
				lighting is installed in addition to and controlled separately from general
				lighting in accordance with Section C405.2.6. This additional power shall be
				used only for the specified luminaires and shall not be used 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.
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.