C405.4.2 Exterior Lighting Power Allowance

The total exterior lighting power allowance is the sum of the base site allowance plus the individual allowances for areas that are to be illuminated by lighting that is powered through the energy service for the building. Lighting power allowances are as specified in Table C405.4.2(2). The lighting zone for the building exterior is determined in accordance with Table C405.4.2(1) unless otherwise specified by the code official.

LIGHTING ZONE	DESCRIPTION
1	Developed areas of national parks, state parks, forest land, and rural areas
2	Areas predominantly consisting of residential zoning, neighborhood business districts, light industrial with limited nighttime use and residential mixed-use areas
3	All other areas not classified as lighting zone 1, 2 or 4
4	High-activity commercial districts in major metropolitan areas as designated by the local land use planning authority

		LIGHTING ZONES
		Zone 1	Zone 2	Zone 3	Zone 4
	Base Site Allowance	350 W	400 W	500 W	900 W
	Uncovered Parking Areas
	Parking areas and drives	0.03W/ft2	0.04 W/ft2	0.06 W/ft2	0.08 W/ft2
	Building Grounds
	Walkways and ramps less than 10 feet wide	0.5 W/linear foot	0.5 W/linear foot	0.6 W/linear foot	0.7 W/linear foot
	Walkways and ramps 10 feet wide or greater, plaza areas, special feature areas	0.10 W/ft2	0.10 W/ft2	0.11 W/ft2	0.14 W/ft2
	Dining areas	0.65 W/ft2	0.65 W/ft2	0.75 W/ft2	0.95 W/ft2
	Stairways	0.6 W/ft2	0.7 W/ft2	0.7 W/ft2	0.7 W/ft2
	Pedestrian tunnels	0.12 W/ft2	0.12 W/ft2	0.14 W/ft2	0.21 W/ft2
	Landscaping	0.03 W/ft2	0.04 W/ft2	0.04 W/ft2	0.04 W/ft2
	Building Entrances and Exits
	Pedestrian and vehicular entrances and exits	14 W/linear foot of opening	14 W/linear foot of opening	21 W/linear foot of opening	21 W/linear foot of opening
	Entry canopies	0.20 W/ft2	0.25 W/ft2	0.4 W/ft2	0.4 W/ft2
	Loading docks	0.35 W/ft2	0.35 W/ft2	0.35 W/ft2	0.35 W/ft2
	Sales Canopies
	Free-standing and attached	0.40 W/ft2	0.40 W/ft2	0.6 W/ft2	0.7 W/ft2
	Outdoor Sales
	Open areas (including vehicle sales lots)	0.20 W/ft2	0.20 W/ft2	0.35 W/ft2	0.50 W/ft2
	Street frontage for vehicle sales lots in addition to "open area" allowance	No allowance	7 W/linear foot	7 W/linear foot	21 W/linear foot

For SI: 1 foot = 304.8 mm, 1 watt per square foot = W/0.0929 m².

W = watts.

LIGHTING ZONES
	Zone 1	Zone 2	Zone 3	Zone 4
Building facades	No allowance	0.075 W/ft2 of gross above-grade wall area	0.113 W/ft2 of gross above-grade wall area	0.15 W/ft2 of gross above-grade wall area
Automated teller machines (ATM) and night depositories	135 W per location plus 45 W per additional ATM per location
Uncovered entrances and gatehouse inspection stations at guarded facilities	0.5 W/ft2 of area
Uncovered loading areas for law enforcement, fire, ambulance and other emergency service vehicles	0.35 W/ft2 of area
Drive-up windows and doors	200 W per drive through
Parking near 24-hour retail entrances.	400 W per main entry

For SI: 1 watt per square foot = W/0.0929 m².

W = watts.

Any increase in the exterior lighting power allowance is limited to the specific lighting applications indicated in Table C405.4.2(3). The additional power shall be used only for the luminaires that are serving these applications and shall not be used for any other purpose.