Chapter 21.17
OUTDOOR LIGHTING STANDARDS

Sections:

21.17.010    Purpose.

21.17.020    Definitions.

21.17.030    Exemptions.

21.17.040    Applicability.

21.17.050    General requirements.

21.17.060    Lighting standard requirements in or within 50 feet of residential zones.

21.17.070    Lighting zones.

21.17.080    Nonresidential lighting.

21.17.090    Lighting by special permit only.

21.17.100    Tables.

21.17.010 Purpose.

A. This chapter is established for the following purposes:

1. To provide uniform outdoor lighting standards to assure public safety, utility and security of private and public property.

2. To reduce and minimize the impact of outdoor lighting on views of the night sky by minimizing glare, obtrusive light and artificial sky glow and limiting outdoor lighting that is misdirected, excessive or unnecessary.

3. To implement the energy conservation policies of the comprehensive plan.

4. To regulate the type of light fixtures, lamps and standards.

5. To protect low- and medium-density residential zones from the adverse impacts associated with nonresidential and multifamily outdoor lighting.

6. To ensure outdoor lighting is in compliance with the State of Washington Energy Code. (Ord. 3178 § 2, 2016)

21.17.020 Definitions.

A. The following definitions shall only apply to this chapter:

1. “Accent lighting” means any luminaire that emphasizes a particular object or draws attention to a particular area for aesthetic purposes.

2. “Ambient light” means general illumination of an area.

3. “Backlight” means, for an outdoor luminaire, lumens emitted in the quartesphere below horizontal and in the opposite direction of the intended orientation of the luminaire. For luminaires with symmetric distribution, backlight will be the same as the front light.

4. “BUG” means a luminaire classification system that classifies backlight (B), uplight (U) and glare (G).

5. “Canopy” means a covered, unconditioned structure with a least one side open for pedestrian and/or vehicular access. (An unconditioned structure is one that may be open to the elements and has no heat or air conditioning).

6. “Curfew” means a time defined by the city when outdoor lighting must be reduced or extinguished.

7. “Cut-off angle” (of a luminaire) means the angle, measured from the lowest point between a vertical line from the center of the lamp extended to the ground and the first line of sight at which the bare source is not visible.

8. “Footcandle (FC)” means a measure of illuminance or a measure of how bright a light appears to the human eye. One footcandle is equal to one lumen/square foot. As an example, a typical 60-watt incandescent lamp (840 lumens) produces an illuminance of 0.1 footcandles at a distance of about 25 feet.

9. “Glare” means lighting entering the eye directly from luminaires or indirectly from reflective surfaces that causes visual discomfort or reduced visibility.

10. “Hardscape” means permanent improvements to the site including parking lots, drives, entrances, curbs, ramps, stairs, steps, medians, walkways and nonvegetated landscaping that is 10 feet or less in width. Materials may include concrete, asphalt, stone, gravel, or similar substances.

11. “Hardscape area” means the area measured in square feet of all hardscape. It is used to calculate the total site lumen limit in both the prescriptive method and performance methods.

12. “Hardscape perimeter” means the perimeter measure in linear feet of the hardscape. It is used to calculate the total site lumen limit in the performance method. Refer to “hardscape” definition.

13. “IESNA” means Illuminating Engineering Society of North America.

14. “Lamp” means the light-producing mechanism of a luminaire.

15. “Light pollution” means any adverse effect of artificial light.

16. “Light trespass” means light falling where it is not wanted or needed (also referred to as spill light or obtrusive light).

17. “Lighting zone” means an overlay zoning system establishing legal limits or regulations for lighting for particular parcels, areas or districts in a community.

18. “Lumen” means a unit of measure used to quantify the amount of light produced by a lamp or emitted from a luminaire (as distinct from “watt,” a measure of power consumption).

19. “Luminaire” means the complete lighting unit, consisting of a lamp, or lamps and ballast(s) (when applicable), together with the parts designed to distribute the light (reflector, lens, diffuser), to position and protect the lamps, and to connect the lamps to the power supply (also referred to as fixture).

20. “Lux” means the International Systems of Units (SI) unit of illuminance. One lux is one lumen per square meter. A lux is a unit of incident illuminance approximately equal to one-tenth footcandle.

21. “Mounting height” means the height of the photometric center of a luminaire above grade level.

22. “Outdoor lighting fixture” means a luminaire outside of an enclosed building or structure or any luminaire directed such that it primarily illuminates outdoor areas.

23. “Shielding” means an opaque or solid material that blocks the transmission of light.

24. “Sky glow” means the brightening of the nighttime sky that results from scattering and reflection of artificial light by moisture and dust particles in the atmosphere. Sky glow is caused by light directed or reflected upwards or sideways and reduces one’s ability to view the night sky.

25. “Spotlight” means a fixture designed to light only a small, well-defined area.

26. “Time switch” means an automatic lighting control device that controls lights according to time of day.

27. “Uplight” means, for an outdoor luminaire, lux radiated in the hemisphere at or above the horizontal plane.

28. “Vertical illuminance” means illuminance measured or calculated in a plane perpendicular to the site boundary or property line. (Ord. 3178 § 2, 2016)

21.17.030 Exemptions.

A. The following are exempt from the provisions of this chapter:

1. Outdoor lighting for single-family residences;

2. Traffic control signals and devices;

3. Street lights on public streets which are in conflict with other design standards adopted by the city. Where a conflict arises, final determination shall be made by the director;

4. Temporary emergency lighting (i.e., fire, police, repair workers) or warning lights;

5. Moving vehicle lights;

6. Navigation lights (i.e., radio/television towers, docks, piers, buoys) or any other lights where state or federal statute requires lighting that cannot comply with this chapter;

7. Seasonal decorations;

8. Outdoor lighting approved by the director for temporary or periodic events (e.g., fairs, nighttime construction);

9. Internally and externally illuminated signs regulated by Chapter 21.16 LMC; and

10. Outdoor egress lighting as required by National Fire Protection Association (NFPA). (Ord. 3178 § 2, 2016)

21.17.040 Applicability.

A. The provisions of this chapter shall apply to:

1. Outdoor lighting undertaken in conjunction with development requiring project design review (PDR); and

2. Redevelopment or expansion when the redevelopment increases the gross floor area or valuation by the criteria established in LMC 21.12.400(C).

3. Minor Modifications, Additions, or New Lighting Fixtures for Nonresidential and Multifamily Dwellings. For nonresidential and multifamily dwellings, all additions, modifications, or replacement of more than 50 percent of outdoor lighting fixtures existing as of the effective date of this chapter shall require the submission of a complete inventory and site plan detailing all existing and any proposed new outdoor lighting. Any new lighting shall meet the requirements of this chapter.

4. Resumption of Use after Abandonment. If a property with nonconforming lighting is abandoned for a period of six months or more, then all outdoor lighting shall be brought into compliance with this chapter before any further use of the property occurs. (Ord. 3178 § 2, 2016)

21.17.050 General requirements.

A. The following general requirements shall apply to all proposed outdoor lighting:

1. Site lighting trespass onto adjacent residential properties shall be minimized;

2. Site lighting shall minimize light spillage into the night sky;

3. Outdoor lighting shall be controlled by either a combination of a photo sensor and a time switch or an astronomical time switch. All time switches shall be capable of retaining programming and the time setting during loss of power for a period of at least 10 hours;

4. Fixtures and lighting systems used for safety and security shall be maintained in good working order and in a manner that serves the original design intent of the system; and

5. The applicant shall submit to the city a site lighting plan to enable a determination that the applicable provisions of this chapter will be satisfied.

a. The outdoor lighting plan shall include the following:

i. Manufacturer specification sheets, cut-sheets or other manufacturer provided information for all proposed lighting fixtures;

ii. The proposed location, mounting height, and aiming point of all outdoor lighting fixtures; and

iii. If building elevations are proposed for illumination, drawings shall be provided for all building elevations showing fixtures, portions of the elevations to be illuminated, illumination levels of the elevations, and the aiming point for any remote light fixture.

b. If needed to review proposed outdoor lighting installations, the city may require additional information following the initial lighting plan submittal, including but not limited to:

i. A brief written narrative, with accompanying plan or sketch, which demonstrates the objectives of the lighting;

ii. Photometric data, BUG ratings as defined by the Illuminating Engineering Society of North America (IESNA), Color Rendering Index (CRI) of all lamps, or LEDs, and other descriptive information on the fixtures, or designation as IESNA “cutoff fixtures”;

iii. A computer generated photometric grid showing footcandle readings every 10 feet within the property or site, and 10 feet beyond the property lines; iso-footcandle contour line style plans are also acceptable; and

iv. Landscaping information that indicates mature vegetation in order to evaluate the long-term and seasonal effectiveness of lighting or screening of lighting. (Ord. 3178 § 2, 2016)

21.17.060 Lighting standard requirements in or within 50 feet of residential zones.

A. Outdoor lighting installations and fixtures located in or within 50 feet of a residential zone shall comply with the following requirements:

1. Lighting fixtures shall be no higher than 15 feet above grade;

2. Lighting fixtures shall be designed and shielded in a manner so that the fixture does not directly illuminate on adjacent residentially zoned property. Fixtures should be of a type or adequately shielded so as to prevent glare from normal viewing angles; and

3. Where feasible, additional landscaping may be required by the city to provide light screening between commercial zones and residential zones to help prevent light trespass onto the residentially zoned properties. Where landscaping is used for light screening, the city shall take into consideration the applicable landscaping standards and citywide design guidelines.

B. The height restrictions of this section shall not apply to lighting used to illuminate outdoor performance areas, sport and recreation facilities, and playfields, except where such lighting fixtures are located within 50 feet of the property line of a residentially zoned property. Lighting of outdoor performance areas, sport and recreation facilities, and playfields shall also meet the standards in LMC 21.17.090. (Ord. 3178 § 2, 2016)

21.17.070 Lighting zones.

A. The lighting zone shall determine the limitations for lighting as specified in this chapter. The lighting zones shall be as follows:

Table 21.17.01 

LIGHTING ZONE

Recommended Uses or Areas

Zoning Considerations

LZ-1

Lighting Zone 1 pertains to areas where low ambient lighting levels are desirable. These typically include single- and two-family residential communities, and other areas with limited nighttime activity. May also include the developed areas in parks and other natural settings.

Recommended default zone for low density residential areas. Includes single- or two-family residential districts, and open space including preserves in developed areas.

LZ-2

Lighting Zone 2 pertains to areas with moderate ambient lighting levels. These typically include multifamily residential uses, institutional residential uses, schools, churches, hospitals, hotels/motels, commercial and/or business areas with evening activities embedded in predominately residential areas, recreational and playing fields serving neighborhoods, and/or mixed use development with a predominance of residential uses. Can be used to accommodate a district of outdoor sales or industry in an area otherwise zoned LZ-1.

Recommended default zone for light commercial business districts, business parks and high density or mixed use residential districts. Includes neighborhood business districts, churches, schools and neighborhood recreation facilities, and light industrial zoning with modest nighttime uses or lighting requirements.

LZ-3

Lighting Zone 3 pertains to areas with moderately high lighting levels. These typically include commercial corridors, high intensity suburban commercial areas, town centers, mixed use areas, industrial uses and shipping and rail yards with high nighttime activity, high use recreation and playing fields, regional shopping malls, car dealerships, gas stations, and other retail areas with outdoor nighttime activity.

Recommended default zone for general business districts. Includes business zone districts and industrial and/or manufacturing zone districts.

B. Lighting Zones Defined.

1. LZ-1: Low ambient lighting: Areas where the natural environment will be seriously and adversely affected by lighting. Impacts include disturbing the biological cycles of flora and fauna and/or detracting from human enjoyment and appreciation of the natural environment. Human activity is subordinate in importance to nature. The vision of human residents and users is adapted to the darkness, and they expect to see little or no lighting. When not needed, lighting should be extinguished.

2. LZ-2: Moderate ambient lighting: Areas of human activity where the vision of human residents and users is adapted to moderate light levels. Lighting may typically be used for safety and convenience but it is not necessarily uniform or continuous. After curfew, lighting may be extinguished or reduced as activity levels decline.

3. LZ-3: Moderately high ambient lighting: Areas of human activity where the vision of human residents and users is adapted to moderately high light levels. Lighting is generally desired for safety, security and/or convenience and it is often uniform and/or continuous. After curfew, lighting may be extinguished or reduced in most areas as activity levels decline.

C. The following chart determines which lighting zone generally applies to each zoning district on the city’s official zoning map. However, the specific use of a property, as described in Table 21.17.02, shall supersede the property’s zoning district when determining which lighting zone applies to the specific property or development.

Table 21.17.02 

LIGHTING ZONE

ZONING DISTRICT

USES

LZ-1

RS-8, RS-7, RS-4, RML, RMM, P1

Single-family, low/medium density multifamily, mobile home parks, city low-use neighborhood parks

LZ-2

RMH, MHP, B1, B2, B3, CDM, HMU, BTP, P1

High-density multifamily, mobile home parks, neighborhood-oriented business, business parks, churches, schools, larger city parks, office buildings

LZ-3

CG, PRC, PCD, CC-C, CC-W, CC-N, ACC, CR, LI, P1

High-intensity commercial areas along arterials, Alderwood Mall, Transition Area, EDCC, Meadowdale Playfields, medium-intensity light industrial, car dealerships, office buildings

(Ord. 3178 § 2, 2016)

21.17.080 Nonresidential lighting.

For all nonresidential properties, and for multifamily residential properties of 12 or more dwellings and having common outdoor areas, all outdoor lighting shall comply either with subsection (A) or (B) of this section.

A. Prescriptive Method. An outdoor lighting installation complies with this section if it meets the requirements of subsections (A)(1) and (2) of this section, except that parking lot lighting shall also meet the requirements of subsection (A)(3) of this section:

1. Total Site Lumen Limit. The total installed initial luminaire lumens of all outdoor lighting shall not exceed the total site lumen limit. The total site lumen limit shall be determined using either the parking space method (Table 21.17.03) or the hardscape area method (Table 21.17.04). Only one method shall be used per permit application. For sites with existing lighting, existing lighting shall be included in the calculation of total installed lumens.

2. Limits to Off-Site Impacts. All luminaires shall be rated and installed according to Tables 21.17.05 through 21.17.07.

3. Light Shielding for Parking Lot Illumination. All parking lot lighting shall have no light emitted above 90 degrees.

a. Exception. Ornamental parking lot lighting shall be permitted by special permit only pursuant to LMC 21.17.090(C), and shall meet the requirements of Table 21.17.05 for backlight, Table 21.17.06 for uplight, and Table 21.17.07 for glare, without the need for external field-added modifications.

B. Performance Method.

1. Total Site Lumen Limit. The total installed initial luminaire lumens of all lighting systems on the site shall not exceed the allowed total initial site lumens. The allowed total initial site lumens shall be determined using Tables 21.17.08 and 21.17.09. For sites with existing lighting, existing lighting shall be included in the calculation of total installed lumens. The total installed initial luminaire lumens of all lighting systems on the site is calculated as the sum of the initial luminaire lumens for all luminaires.

2. Limits to Off-Site Impacts. All luminaires shall be rated and installed using either Option A or Option B below. Only one option may be used per permit application.

Option A: All luminaires shall be rated and installed according to Tables 21.17.05 through 21.17.07.

Option B: The entire outdoor lighting design shall be analyzed using industry standard lighting software including interreflections in the following manner:

a. Input data shall describe the lighting system including luminaire locations, mounting heights, aiming directions, and employing photometric data tested in accordance with IES guidelines. Buildings or other physical objects on the site within three object heights of the property line must be included in the calculations.

b. Analysis shall utilize an enclosure comprised of calculation planes with zero reflectance values around the perimeter of the site. The top of the enclosure shall be no less than 33 feet above the tallest luminaire. Calculations shall include total lumens upon the inside surfaces of the box top and vertical sides and maximum vertical illuminance (footcandles and/or lux) on the sides of the enclosure.

c. The design complies if:

i. The total lumens on the inside surfaces of the virtual enclosure are less than 15 percent of the total site lumen limit; and

ii. The maximum vertical illuminance on any vertical surface is less than the allowed maximum illuminance per Table 21.17.10. (Ord. 3178 § 2, 2016)

21.17.090 Lighting by special permit only.

A. High Intensity and Special Purpose Lighting. The following lighting systems are prohibited from being installed or used except by special permit:

1. Temporary lighting in which any single luminaire exceeds 20,000 initial luminaire lumens or the total lighting load exceeds 160,000 lumens.

2. Aerial lasers.

3. Searchlights (unless permitted by LMC 21.16.310(H)).

4. Other very intense lighting defined as having a light source exceeding 200,000 initial luminaire lumens or an intensity in any direction of more than 2,000,000 candelas.

B. Upon special permit issued by the city, lighting not complying with the technical requirements of this chapter but consistent with its intent may be installed for complex sites or uses or special uses including, but not limited to, the following applications:

1. Sports facilities, including but not limited to unconditioned sports facilities (fields, stadiums, courts, etc.)

2. Construction lighting.

3. Lighting for industrial sites having special requirements, such as petrochemical manufacturing or storage, shipping piers, etc.

4. Parking structures.

5. Urban parks.

6. Ornamental and architectural lighting of bridges, public monuments, statuary and public buildings.

7. Correctional facilities.

C. To obtain such a permit, applicants shall demonstrate that the proposed lighting installation:

1. Makes every reasonable effort to mitigate the effects of light on the environment and surrounding properties, supported by a signed statement describing the mitigation measures. Such statement shall be accompanied by the calculations required for the performance method under LMC 21.17.080(B).

2. Employs lighting controls to reduce lighting at a project specific curfew (“curfew”) time to be established in the permit.

3. Complies with the performance method under LMC 21.17.080(B) after curfew. The city shall review each such application. A permit may be granted if, upon review, the city believes that the proposed lighting will not create unwarranted glare, sky glow, or light trespass. (Ord. 3178 § 2, 2016)

21.17.100 Tables.

 

Table 21.17.03 – Allowed Total Initial Luminaire Lumens per Site for Nonresidential Outdoor Lighting, Parking Space Method 

May only be applied to developments with no more than 10 parking spaces (including handicapped accessible spaces.)

LZ-1

LZ-2

LZ-3

490 lms/space

630 lms/space

840 lms/space

Table 21.17.04 – Allowed Total Initial Lumens per Site for Nonresidential Outdoor Lighting, Hardscape Area Method 

May be used for any development. When lighting intersections of site drives and public streets or road, a total of 600 square feet for each intersection may be added to the actual site hardscape area to provide for intersection lighting.

LZ-1

LZ-2

LZ-3

Base Allowance

1.25 lumens per SF of hardscape

2.5 lumens per SF of hardscape

5.0 lumens per SF of hardscape

 

Lumen Allowances in Addition to Base Allowance

LZ-1

LZ-2

LZ-3

Additional allowances for sales and service facilities. No more than two additional allowances per site.

Outdoor Sales Lots. This allowance is lumens per square foot of uncovered sales lots used exclusively for the display of vehicles or other merchandise for sale, and shall not include driveways, parking or other nonsales areas. To use this allowance, luminaires must be within 2 mounting heights of sales lot area.

4 lumens per square foot

8 lumens per square foot

12 lumens per square foot

Outdoor Sales Frontage. This allowance is for lineal feet of sales frontage immediately adjacent to the principal viewing locations(s) and unobstructed for its viewing length. A corner sales lot may include two adjacent sides provided that a different principal viewing location exists for each side. In order to use this allowance, luminaires must be located between the principal viewing location and the frontage outdoor sales area.

0

1,000 per LF

1,500 per LF

Drive-Up Windows. In order to use this allowance, luminaires must be within 20 feet horizontal distance of the center of the window.

2,000 lumens per drive-up window

4,000 lumens per drive-up window

8,000 lumens per drive-up window

Vehicle Service Station. This allowance is lumens per installed fuel pump.

4,000 lumens per pump (based on 5 FC horizontal)

8,000 lumens per pump (based on 10 FC horizontal)

16,000 lumens per pump (based on 20 FC horizontal)

Table 21.17.05 – Maximum Allowable Backlight, Uplight and Glare (BUG) Ratings 

May be used for any development. A luminaire may be used if it is rated for the lighting zone of the site or lower in number for all ratings B, U and G. Luminaires equipped with adjustable mounting devices permitting alteration of luminaire aiming in the field shall not be permitted.

 

LZ-1

LZ-2

LZ-3

Allowed Backlight Rating*

Greater than 2 mounting heights from property line

B3

B4

B5

1 to less than 2 mounting heights from property line and ideally oriented**

B2

B3

B4

0.5 to 1 mounting heights from property line and ideally oriented**

B1

B2

B3

Less than 0.5 mounting heights to property line and property oriented**

B0

B0

B1

* For property lines that abut public walkways, bikeways, bikeways, plazas, and parking lots, the property line may be considered to be five feet beyond the actual property line for purposes of determining compliance with this section. For property lines that abut public roadways and public transit corridors, the property line may be considered to be the centerline of the public roadway or public transit corridor for the purpose of determining compliance with this section. NOTE: This adjustment is relative to Table 21.17.05 and Table 21.17.07 only and shall not be used to increase the lighting area of the site.

**To be considered “ideally oriented,” the luminaire must be mounted with the backlight portion of the light output oriented perpendicular and toward the property line of concern.

 

Table 21.17.06 – Maximum Allowable Backlight (BUG) Ratings – Continued

 

LZ-1

LZ-2

LZ-3

Allowed Uplight Rating

U1

U2

U3

Allowed % light emission above 90 degrees for street or area lighting

0%

0%

0%

Table 21.17.07 – Maximum Allowable Glare (BUG) Ratings – Continued

 

LZ-1

LZ-2

LZ-3

Allowed Glare Rating

G1

G2

G3

Any luminaire not ideally oriented*** with 1 to less than 2 mounting heights to any property line of concern

G0

G1

G1

Any luminaire not ideally oriented*** with 0.5 to 1 mounting heights to any property line of concern

G0

G0

G1

Any luminaire not ideally oriented*** with less than 0.5 mounting heights to any property line of concern

G0

G0

G0

*** Any luminaire that cannot be mounted with its backlight perpendicular to any property line within two times the mounting heights of the luminaire location shall meet the reduced Allowed Glare Rating in Table 21.17.07.

 

Table 21.17.08 – Performance Method Allowed Initial Site Lumens

May be used on any project.

Lighting Zone

LZ-1

LZ-2

LZ-3

Allowed Lumens per Square Foot

1.25

2.5

5.0

Allowed Base Lumens per Site

3,500

7,000

14,000

Table 21.17.09 – Performance Method Additional Initial Luminaire Lumen Allowances 

All area and distance measurements shall be in plan view unless otherwise noted.

Lighting Application

LZ-1

LZ-2

LZ-3

Additional Lumens Allowances for All Buildings Except Service Stations and Outdoor Sales Facilities. A maximum of three allowances are permitted.

Building Entrances or Exits. This allowance is per door. In order to use this allowance, luminaires must be within 20 feet of the door.

1,000

2,000

4,000

Building Facades. This allowance is lumens per unit area of building facade that are illuminated. To use this allowance, luminaires must be aimed at the facade and capable of illuminating it without obstruction.

0

8/SF

16/SF

Sales or Non-Sales Canopies. This allowance is lumens per unit area for the total area within the drip line of the canopy. In order to qualify for this allowance, luminaires must be located under the canopy.

3/SF

6/SF

12/SF

Guard Stations. This allowance is lumens per unit area of guardhouse plus 2,000 sf per vehicle lane. In order to use this allowance, luminaires must be within 2 mounting heights of a vehicle lane or the guardhouse.

6/SF

12/SF

24/SF

Outdoor Dining. This allowance is lumens per unit area for the total illuminated hardscape of outdoor dining. In order to use this allowance, luminaires must be within 2 mounting heights of the hardscape area of outdoor dining.

1/SF

5/SF

10/SF

Drive-Up Windows. This allowance is lumens per window. In order to use this allowance, luminaires must be within 20 feet of the center of the window.

2,000 lumens per drive-up window

4,000 lumens per drive-up window

8,000 lumens per drive-up window

 

Additional Lumens Allowances for Service Stations Only.

Service stations may not use any other additional allowances.

Vehicle Service Station Hardscape. This allowance is lumens per unit area for the total illuminated hardscape area less area of buildings, area under canopies, or areas obstructed by signs or structures. In order to use this allowance, luminaires must be illuminating.

4/SF

8/SF

16/SF

Vehicle Service Station Canopies. This allowance is lumens per unit area for the total area within the drip line of the canopy. In order to use this allowance, luminaires must be located under the canopy.

8/SF

16/SF

32/SF

Additional Lumens Allowances for Outdoor Sales Facilities Only. Outdoor sales facilities may not use any other additional allowances. NOTICE: Lighting permitted by these allowances shall employ controls extinguishing this lighting after a curfew time to be determined by the city.

Outdoor Sales Lots. This allowance is lumens per square foot of uncovered sales lots used exclusively for the display of vehicles or other merchandise for sale, and may not include driveways, parking or other non-sales areas and shall not exceed 25% of the total hardscape area. To use this allowance, luminaires must be within 2 mounting heights of the sales lot area.

4/SF

8/SF

12/SF

Outdoor Sales Frontage. This allowance is for lineal feet of sales frontage immediately adjacent to the principal viewing locations(s) and unobstructed for its viewing length. A corner sales lot may include two adjacent sides provided that a different principal viewing location exists for each side. In order to use this allowance, luminaires must be located between the principal viewing location and the frontage outdoor sales area.

0

1,000/LF

1,500/LF

 

Table 21.17.10 – Maximum Vertical Illuminance at Any Point in the Plane of the Property Line 

LZ-1

LZ-2

LZ-3

0.1 FC or 1.0 LUX

0.3 FC or 3.0 LUX

0.8 FC or 8.0 LUX

(Ord. 3178 § 2, 2016)