Heads up: There are no amended sections in this chapter.
This section shall apply to the following:
  1. Interior spaces of buildings
  2. Exterior building features, including façades, illuminated roofs, architectural features, entrances, exits, loading docks, and illuminated canopies
  3. Exterior building grounds lighting provided through the building's electrical service

Exceptions:

  1. Emergency lighting that is automatically off during normal building operation
  2. Lighting within dwelling units
  3. Lighting that is specifically designated as required by a health or life safety statute, ordinance, or regulation
  4. Decorative gas lighting systems
For the alteration of any lighting system in an interior space, that space shall comply with the lighting power density (LPD) requirements of Section 9 applicable to that space and the automatic shutoff requirements of Section 9.4.1.1. For the alteration of any lighting system in an exterior building application, that lighting system shall comply with the lighting power density (LPD) requirements of Section 9 applicable to the area illuminated by that lighting system and the applicable control requirements of Sections 9.4.1.4(a) and 9.4.1.4(b). Such alterations shall include all luminaires that are added, replaced or removed. This requirement shall also be met for alterations that involve only the replacement of lamps plus ballasts. Alterations do not include routine maintenance or repair situations.

Exception: Alterations that involve less than 10% of the connected lighting load in a space or area need not comply with these requirements, provided that such alterations do not increase the installed LPD.

The luminaire wattage for all interior and exterior applications shall include all power used by the luminaires, including lamps, ballasts, transformers, and control devices, except as specifically exempted in Section 9.1.1, 9.2.2.3, or 9.4.2.

Exception: If two or more independently operating lighting systems in a space are capable of being controlled to prevent simultaneous user operation, the installed interior lighting power or the installed exterior lighting power shall be based solely on the lighting system with the highest wattage.

Luminaire wattage, when used to calculate either installed interior lighting power or installed exterior lighting power, shall be determined in accordance with the following criteria:
  1. The wattage of line-voltage luminaires not containing permanently installed ballasts, transformers, or similar devices shall be the manufacturers' labeled maximum wattage of the luminaire.
  2. The wattage of luminaires with permanently installed or remote ballasts, transformers, or similar devices shall be the operating input wattage of the maximum lamp/auxiliary combination based on values from the auxiliary manufacturers' literature or recognized testing laboratories or shall be the maximum labeled wattage of the luminaire.

    Exception: Lighting power calculations for ballasts with adjustable ballast factors shall be based on the ballast factor that will be used in the space, provided that the ballast factor is not user changeable.

  3. For line-voltage lighting track and plug-in busway designed to allow the addition and/or relocation of luminaires without altering the wiring of the system, the wattage shall be
    1. the specified wattage of the luminaires included in the system with a minimum of 30 W/lin ft,
    2. the wattage limit of the system's circuit breaker or
    3. the wattage limit of other permanent current-limiting device(s) on the system.
  4. The wattage of low-voltage lighting track, cable conductor, rail conductor, and other flexible lighting systems that allow the addition and/or relocation of luminaires without altering the wiring of the system shall be the specified wattage of the transformer supplying the system.
  5. The wattage of all other miscellaneous lighting equipment shall be the specified wattage of the lighting equipment.
Lighting systems and equipment shall comply with Section 9.1, "General"; Section 9.4, "Mandatory Provisions"; Section 9.7, "Submittals"; and the prescriptive requirements of either
  1. Section 9.5, "Building Area Method Compliance Path" or
  2. Section 9.6, "Alternative Compliance Path: Space-by-Space Method."
This method for determining the interior lighting power allowance, described in Section 9.5, is a simplified approach for demonstrating compliance.
This method, described in Section 9.6, is an alternative approach that allows greater flexibility.
The interior lighting power allowance for a building or a separately metered or permitted portion of a building shall be determined by either the Building Area Method, described in Section 9.5, or the Space-by-Space Method, described in Section 9.6. Trade-offs of interior lighting power allowance among portions of the building for which a different method of calculation has been used are not permitted. The installed interior lighting power identified in accordance with Section 9.1.3 shall not exceed the interior lighting power allowance developed in accordance with Section 9.5 or 9.6.

Exceptions: The following lighting equipment and applications shall not be considered when determining the interior lighting power allowance developed in accordance with Section 9.5 or 9.6, nor shall the wattage for such lighting be included in the installed interior lighting power identified in accordance with Section 9.1.3. However, any such lighting shall not be exempt unless it is an addition to general lighting and is controlled by an independent control device.

  1. Display or accent lighting that is an essential element for the function performed in galleries, museums, and monuments
  2. Lighting that is integral to equipment or instrumentation and is installed by its manufacturer
  3. Lighting specifically designed for use only during medical or dental procedures and lighting integral to medical equipment
  4. Lighting integral to both open and glass-enclosed refrigerator and freezer cases
  5. Lighting integral to food warming and food preparation equipment
  6. Lighting specifically designed for the life support of nonhuman life forms
  7. Lighting in retail display windows, provided the display area is enclosed by ceiling-height partitions
  8. Lighting in interior spaces that have been specifically designated as a registered interior historic landmark
  9. Lighting that is an integral part of advertising or directional signage
  10. Exit signs
  11. Lighting that is for sale or lighting educational demonstration systems
  12. Lighting for theatrical purposes, including performance, stage, and film and video production
  13. Lighting for television broadcasting in sporting activity areas
  14. Casino gaming areas
  15. Furniture-mounted supplemental task lighting that is controlled by automatic shutoff and complies with Section 9.4.1.3(c)
  16. Mirror lighting in dressing rooms and accent lighting in religious pulpit and choir areas
  17. Parking garage transition lighting—lighting for covered vehicle entrances and exits from buildings and parking structures—that complies with Section 9.4.1.2(a) and 9.4.1.2(c); each transition zone shall not exceed a depth of 66 ft inside the structure and a width of 50 ft
Building lighting controls shall be installed to meet the provisions of Sections 9.4.1.1, 9.4.1.2, 9.4.1.3, and 9.4.1.4.
For each space in the building, all of the lighting control functions indicated in Table 9.6.1, for the appropriate space type in column A, and as described below, shall be implemented. All control functions labeled with an "REQ" are mandatory and shall be implemented. If a space type has control functions labeled "ADD1" then at least one of those functions shall be implemented. If a space type has control functions labeled "ADD2" then at least one of those functions shall be implemented. For space types not listed, select a reasonably equivalent type.

If using the Space-by-Space Method for LPD requirements, the space type used for determining control requirements shall be the same space type used to determine the LPD.

  1. Local control: There shall be one or more manual lighting controls in the space that controls all of the lighting in the space. Each control device shall control an area (1) no larger than 2500 ft2 if the space is ≤10,000 ft2 and (2) no larger than 10,000 ft2 otherwise. The device installed to comply with this provision shall be readily accessible and located so that the occupants can see the controlled lighting when using the control device.

    Exception: Remote location of this local control device or devices shall be permitted for reasons of safety or security when each remote control device has an indicator pilot light as part of or next to the control device and the light is clearly labeled to identify the controlled lighting.

  2. Restricted to manual ON: None of the lighting shall be automatically turned on.

    Exception: Manual ON is not required where manual ON operation of the general lighting would endanger the safety or security of the room or building occupants.

  3. Restricted to partial automatic ON: No more than 50% of the lighting power for the general lighting shall be allowed to be automatically turned on, and none of the remaining lighting shall be automatically turned on.
  4. Bilevel lighting control: The general lighting in the space shall be controlled so as to provide at least one intermediate step in lighting power or continuous dimming in addition to full ON and full OFF. At least one intermediate step shall be between 30% and 70% (inclusive) of full lighting power.
  5. Automatic daylight responsive controls for sidelighting: In any space where the combined input power of all general lighting completely or partially within the primary sidelighted areas is 150 W or greater, the general lighting in the primary sidelighted areas shall be controlled by photocontrols.

    In any space where the combined input power of all general lighting completely or partially within the primary and secondary sidelighted areas is 300 W or greater, the general lighting in the primary sidelighted areas and secondary sidelighted areas shall be controlled by photocontrols.

    The control system shall have the following characteristics:

    1. The calibration adjustments shall be readily accessible.
    2. At minimum, general lighting in the secondary sidelighted area shall be controlled independently of the general lighting in the primary sidelighted area.
    3. The photocontrol shall reduce electric lighting in response to available daylight using continuous dimming or with at least one control point between 50% and 70% of design lighting power, a second control point between 20% and 40% of design lighting power or the lowest dimming level the technology allows, and a third control point that turns off all the controlled lighting.

    Exceptions: The following areas are exempted from Section 9.4.1.1(e):

    1. Primary sidelighted areas where the top of any existing adjacent structure is twice as high above the windows as its distance away from the windows
    2. Sidelighted areas where the total glazing area is less than 20 ft2
    3. Retail spaces
  6. Automatic daylight responsive controls for toplighting: In any space where the combined input power for all general lighting completely or partially within daylight areas under skylights and daylight areas under roof monitors is 150 W or greater, general lighting in the daylight area shall be controlled by photocontrols having the following characteristics:
    1. The calibration adjustments shall be readily accessible.
    2. The photocontrol shall reduce electric lighting in response to available daylight using continuous dimming or with at least one control point that is between 50% and 70% of design lighting power, a second control point between 20% and 40% of design lighting power or the lowest dimming level the technology allows, and a third control point that turns off all the controlled lighting.
    3. General lighting in overlapping toplighted and sidelighted daylight areas shall be controlled together with general lighting in the daylight area under skylights or daylight areas under roof monitors.

    Exceptions: The following areas are exempted from Section 9.4.1.1(f):

    1. Daylight areas under skylights where it is documented that existing adjacent structures or natural objects block direct sunlight for more than 1500 daytime hours per year between 8 a.m. and 4 p.m.
    2. Daylight areas where the skylight visual transmittance (VT) is less than 0.4
    3. In each space within buildings in Climate Zone 8 where the input power of the general lighting within daylight areas is less than 200 W
  7. Automatic partial OFF (full OFF complies): The general lighting power in the space shall be automatically reduced by at least 50% within 20 minutes of all occupants leaving the space.

    Exceptions: This requirement does not have to be complied with in spaces that meet all three of the following requirements:

    1. The space has an LPD of no more than 0.80 W/ft2
    2. The space is lighted by HID
    3. The general lighting power in the space is automatically reduced by at least 30% within 20 minutes of all occupants leaving the space
  8. Automatic full OFF: All lighting shall be automatically shut off within 20 minutes of all occupants leaving the space. A control device meeting this requirement shall control no more than 5000 ft2.

    Exceptions: The following lighting is not required to be automatically shut off:

    1. General lighting and task lighting in shop and laboratory classrooms
    2. General lighting and task lighting in spaces where automatic shutoff would endanger the safety or security of room or building occupants
    3. Lighting required for 24/7 operation
  9. Scheduled shutoff: All lighting in the space not exempted by Exception (1) to Section 9.1.1 shall be automatically shut off during periods when the space is scheduled to be unoccupied using either (1) a time-of-day operated control device that automatically turns the lighting off at specific programmed times or (2) a signal from another automatic control device or alarm/security system. The control device or system shall provide independent control sequences that (1) control the lighting for an area of no more than 25,000 ft2, (2) include no more than one floor, and (3) shall be programmed to account for weekends and holidays. Any manual control installed to provide override of the scheduled shutoff control shall not turn the lighting on for more than two hours per activation during scheduled off periods and shall not control more than 5000 ft2.

    Exceptions: The following lighting is not required to be on scheduled shutoff:

    1. Lighting in spaces where lighting is required for 24/ 7 continuous operation
    2. Lighting in spaces where patient care is rendered
    3. Lighting in spaces where automatic shutoff would endanger the safety or security of the room or building occupants
Lighting for parking garages shall comply with the following requirements:
  1. Parking garage lighting shall have automatic lighting shutoff per Section 9.4.1.1(i).
  2. Lighting power of each luminaire shall be automatically reduced by a minimum of 30% when there is no activity detected within a lighting zone for 20 minutes. Lighting zones for this requirement shall be no larger than 3600 ft2.

    Exceptions: The following areas are exempt:

    1. Daylight transitions zones and ramps without parking
  3. Lighting for covered vehicle entrances and exits from buildings and parking structures shall be separately controlled by a device that automatically reduces the lighting by at least 50% from sunset to sunrise.
  4. The power to luminaires within 20 ft of any perimeter wall structure that has a net opening-to-wall ratio of at least 40% and no exterior obstructions within 20 ft, shall be automatically reduced in response to daylight.

    Exceptions: Lighting in the following areas is exempt:

    1. Lighting in daylight transitions zones and ramps without parking
  1. The following lighting shall be separately controlled from the general lighting in all spaces:
    1. Display or accent lighting
    2. Lighting in display cases
    3. Nonvisual lighting, such as for plant growth or food warming
    4. Lighting equipment that is for sale or used for demonstrations in lighting education
  2. Guestrooms
    1. All lighting and all switched receptacles in guestrooms and suites in hotels, motels, boarding houses, or similar buildings shall be automatically controlled such that the power to the lighting and switched receptacles in each enclosed space will be turned off within 20 minutes after all occupants leave that space.

      Exception: Enclosed spaces where the lighting and switched receptacles are controlled by captive key systems and bathrooms are exempt.

    2. Bathrooms shall have a separate control device installed to automatically turn off the bathroom lighting within 30 minutes after all occupants have left the bathroom.

      Exception: Night lighting of up to 5 W per bathroom is exempt.

  3. All supplemental task lighting, including permanently installed undershelf or undercabinet lighting, shall be controlled from either (1) a control device integral to the luminaires or (2) by a wall-mounted control device that is readily accessible and located so that the occupant can see the controlled lighting.
Lighting for exterior applications not exempted in Section 9.1 shall meet the following requirements:
  1. Lighting shall be controlled by a device that automatically turns off the lighting when sufficient daylight is available.
  2. All building façade and landscape lighting shall be automatically shut off between midnight or business closing, whichever is later, and 6 a.m. or business opening, whichever comes first, or between times established by the authority having jurisdiction.
  3. Lighting not specified in Section 9.4.1.4(b) and lighting for signage shall be controlled by a device that automatically reduces the connected lighting power by at least 30% for at least one of the following conditions:
    1. From 12 midnight or within one (1) hour of the end of business operations, whichever is later, until 6 a.m. or business opening, whichever is earlier
    2. During any period when no activity has been detected for a time of no longer than 15 minutes

All time switches shall be capable of retaining programming and the time setting during loss of power for a period of at least ten hours.

Exceptions:

  1. Lighting for covered vehicle entrances or exits from buildings or parking structures where required for safety, security, or eye adaptation
  2. Lighting that is integral to signage and installed in the signage by the manufacturer
The total exterior lighting power allowance for all exterior building applications is the sum of the base site allowance plus the individual allowances for areas that are designed to be illuminated and are permitted in Table 9.4.2-2 for the applicable lighting zone. The installed exterior lighting power identified in accordance with Section 9.1.3 shall not exceed the exterior lighting power allowance developed in accordance with this section. Trade-offs are allowed only among exterior lighting applications listed in the Table 9.4.2-2 "Tradable Surfaces" section. The lighting zone for the building exterior is determined from Table 9.4.2-1 unless otherwise specified by the local jurisdiction.

Exceptions:

  1. Lighting used for the following exterior applications is exempt when equipped with a control device that complies with the requirements of Section 9.4.1.4 and is independent of the control of the nonexempt lighting:
    1. Lighting that is integral to signage and installed in the signage by the manufacturer
    2. Lighting for athletic playing areas
    3. Lighting for industrial production, material handling, transportation sites, and associated storage areas
    4. Theme elements in theme/amusement parks
    5. Lighting used to highlight features of public monuments and registered historic landmark structures or buildings.
    6. Lighting for water features
  2. Lighting used for the following exterior applications is exempt when controlled separately:
    1. Specialized signal, directional, and marker lighting associated with transportation
    2. Lighting integral to equipment or instrumentation and installed by its manufacturer
    3. Lighting for theatrical purposes, including performance, stage, film production, and video production
    4. Temporary lighting
    5. Lighting for hazardous locations
    6. Lighting for swimming pools
    7. Searchlights

TABLE 9.4.2-1 Exterior Lighting Zones

Lighting Zone Description
0 Undeveloped areas within national parks, state parks, forest land, rural areas, and other undeveloped areas as defined by the authority having jurisdiction
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
4 High-activity commercial districts in major metropolitan areas as designated by the local jurisdiction

TABLE 9.4.2-2 Individual Lighting Power Allowances for Building Exteriors

  Zone 0 Zone 1 Zone 2 Zone 3 Zone 4
Base Site Allowance (base allowance may be used in tradable or non-tradable surfaces)
  No base site in Zone 0 500 W 600 W 750 W 1300 W
Tradable Surfaces
(LPDs for uncovered parking areas, building grounds, building entrances, exits and loading docks, canopies and overhangs, and outdoor sales areas may be traded.)
Uncovered Parking Areas
Parking areas and drives No allowance 0.04 W/ft2 0.06 W/ft2 0.10 W/ft2 0.13 W/ft2
Building Grounds
Walkways less than 10 ft wide No allowance 0.7 W/linear foot 0.7 W/linear foot 0.8 W/linear foot 1.0 W/linear foot
Walkways 10 ft wide or greater Plaza areas Special feature areas No allowance 0.14 W/ft2 0.14 W/ft2 0.16 W/ft2 0.2 W/ft2
Stairways No allowance 0.75 W/ft2 1.0 W/ft2 1.0 W/ft2 1.0 W/ft2
Pedestrian tunnels No allowance 0.15 W/ft2 0.15 W/ft2 0.2 W/ft2 0.3 W/ft2
Landscaping No allowance 0.04 W/ft2 0.05 W/ft2 0.05 W/ft2 0.05 W/ft2
Building Entrances, Exits, and Loading Docks
Main entries No allowance 20 W/lin ft of door width 20 W/lin ft of door width 30 W/lin ft of door width 30 W/lin ft of door width
Other doors No allowance 20 W/lin ft of door width 20 W/lin ft of door width 20 W/lin ft of door width 20 W/lin ft of door width
Entry canopies No allowance 0.25 W/ft2 0.25 W/ft2 0.4 W/ft2 0.4 W/ft2
Loading docks No allowance 0.5 W/ft2 0.5 W/ft2 0.5 W/ft2 0.5 W/ft2
Sales Canopies
Free standing and attached No allowance 0.6 W/ft2 0.6 W/ft2 0.8 W/ft2 1.0 W/ft2
Outdoor Sales
Open areas (including vehicle sales lots) No allowance 0.25 W/ft2 0.25 W/ft2 0.5 W/ft2 0.7 W/ft2
Street frontage for vehicle sales lots in addition to "open area" allowance No allowance No allowance 10 W/linear foot 10 W/linear foot 30 W/linear foot
Nontradable Surfaces
(LPD calculations for the following applications can be used only for the specific application and cannot be traded between surfaces or with other exterior lighting. The following allowances are in addition to any allowance otherwise permitted in the "Tradable Surfaces" section of this table.)
Building facades No allowance No allowance 0.1 W/ft2 for each illuminated wall or surface or 2.5 W/ linear foot for each illuminated wall or surface length 0.15 W/ft2 for each illuminated wall or surface or 3.75 W/ linear foot for each illuminated wall or surface length 0.2 W/ft2 for each illuminated wall or surface or 5.0 W/ linear foot for each illuminated wall or surface length
Automated teller machines and night depositories No allowance 270 W per location plus 90 W per additional ATM per location 270 W per location plus 90 W per additional ATM per location 270 W per location plus 90 W per additional ATM per location 270 W per location plus 90 W per additional ATM per location
Entrances and gatehouse inspection stations at guarded facilities No allowance 0.75 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.75 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.75 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.75 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces")
Loading areas for law enforcement, fire, ambulance, and other emergency service vehicles No allowance 0.5 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.5 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.5 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces") 0.5 W/ft2 of uncovered area (covered areas are included in the "Canopies and Overhangs" section of "Tradable Surfaces")
Drive-through windows/doors No allowance 400 W per drive-through 400 W per drive-through 400 W per drive-through 400 W per drive-through
Parking near 24-hour retail entrances No allowance 800 W per main entry 800 W per main entry 800 W per main entry 800 W per main entry
Roadway/parking entry, trail head, and toilet facility, or other locations approved by the authority having jurisdiction. A single luminaire of 60 W or less may beinstalled foreach roadway/parking entry, trail head, and toilet facility, or otherlocations approved bythe authority having jurisdiction No allowance No allowance No allowance No allowance
Lighting control devices and control systems shall be tested to ensure that control hardware and software are calibrated, adjusted, programmed, and in proper working condition in accordance with the construction documents and manufacturer's installation instructions. When occupant sensors, time switches, programmable schedule controls, or photosensors are installed, at a minimum, the following procedures shall be performed:
  1. Occupant Sensors
    1. Certify that the sensor has been located and aimed in accordance with manufacturer recommendations.
    2. For projects with up to seven (7) occupancy sensors, all occupancy sensors shall be tested.
    3. For projects with more than seven (7) occupancy sensors, testing shall be done for each unique combination of sensor type and space geometry.
      1. For each sensor to be tested, verify the following:
        1. Status indicator (as applicable) operates correctly
        2. Controlled lights turn off or down to the permitted level within the required time
        3. For auto-on occupant sensors, the lights turn on to the permitted level when someone enters the space
        4. For manual-on sensors, the lights turn on only when manually activated
        5. The lights are not incorrectly turned on by movement in nearby areas or by HVAC operation
  2. Automatic Time Switches
    1. Confirm that the automatic time-switch control is programmed with appropriate weekday, weekend, and holiday (as applicable) schedules.
    2. Document for the owner automatic time-switch programming, including weekday, weekend, and holiday schedules, as well as all setup and preference program settings.
    3. Verify that correct time and date are properly set in the time switch.
    4. Verify that any battery backup (as applicable) is installed and energized.
    5. Verify that the override time limit is set to no more than two (2) hours.
    6. Simulate occupied condition. Verify and document the following:
      1. All lights can be turned on and off by their respective area control switch.
      2. The switch only operates lighting in the enclosed space in which the switch is located.
    7. Simulate unoccupied condition. Verify and document the following:
      1. All nonexempt lighting turns off
      2. Manual override switch allows only the lights in the enclosed space where the override switch is located to turn on or remain on until the next scheduled shut off occurs
  3. Daylight Controls
    1. All control devices (photocontrols) have been properly located, field-calibrated, and set for appropriate setpoints and threshold light levels.
    2. Daylight controlled lighting loads adjust to appropriate light levels in response to available daylight.
    3. The location where calibration adjustments are made is readily accessible only to authorized personnel.

The individual(s) responsible for the functional testing shall not be directly involved in either the design or construction of the project and shall provide documentation certifying that the installed lighting controls meet or exceed all documented performance criteria.

Use the following steps to determine the interior lighting power allowance by the Building Area Method:
  1. Determine the appropriate building area type from Table 9.5.1 and the allowed LPD (watts per unit area) from the "Building Area Method" column. For building area types not listed, selection of a reasonably equivalent type shall be permitted.
  2. Determine the gross lighted floor area (square feet) of the building area type.
  3. Multiply the gross lighted floor areas of the building area type(s) times the LPD.
  4. The interior lighting power allowance for the building is the sum of the lighting power allowances of all building area types. Trade-offs among building area types are permitted, provided that the total installed interior lighting power does not exceed the interior lighting power allowance.

TABLE 9.5.1 Lighting Power Densities Using the Building Area Method

Building Area Typea LPD, W/ft2
Automotive facility 0.80
Convention center 1.01
Courthouse 1.01
Dining: Bar lounge/leisure 1.01
Dining: Cafeteria/fast food 0.90
Dining: Family 0.95
Dormitory 0.57
Exercise center 0.84
Fire station 0.67
Gymnasium 0.94
Health-care clinic 0.90
Hospital 1.05
Hotel/Motel 0.87
Library 1.19
Manufacturing facility 1.17
Motion picture theater 0.76
Multifamily 0.51
Museum 1.02
Office 0.82
Parking garage 0.21
Penitentiary 0.81
Performing arts theater 1.39
Police station 0.87
Post office 0.87
Religious building 1.00
Retail 1.26
School/university 0.87
Sports arena 0.91
Town hall 0.89
Transportation 0.70
Warehouse 0.66
Workshop 1.19

a. In cases where both a general building area type and a specific building area type are listed, the specific building area type shall apply.

Use the following steps to determine the interior lighting power allowance by the Space-by-Space Method:
  1. For each space enclosed by partitions that are 80% of the ceiling height or taller, determine the appropriate space type from Table 9.6.1. If a space has multiple functions, where more than one space type is applicable, that space shall be broken up into smaller subspaces, each using its own space type from Table 9.6.1. Any of these subspaces that are smaller in floor area than 20% of the original space and less than 1000 ft2 need not be broken out separately. Include the floor area of balconies and other projections in this calculation.
  2. In calculating the area of each space and subspace, the limits of the area are defined by the centerline of interior walls, the dividing line between subspaces, and the outside surface of exterior walls.
  3. Based on the space type selected for each space or subspace, determine the lighting power allowance of each space or subspace by multiplying the calculated area of the space or subspace by the appropriate LPD determined in Section 9.6.1(a). For space types not listed, selection of a reasonable equivalent category shall be permitted.
  4. The interior lighting power allowance is the sum of lighting power allowances of all spaces and subspaces. Trade-offs among spaces and subspaces are permitted, provided that the total installed interior lighting power does not exceed the interior lighting power allowance.

TABLE 9.6.1 Lighting Power Density Allowances Using the Space-by-Space Method and Minimum Control Requirements Using Either Method

  The control functions below shall be implemented in accordance with the descriptions found in the referenced paragraphs within Section 9.4.1.1. For each space type:
(1) All REQs shall be implemented.
(2) At least one ADD1 (when present) shall be implemented.
(3) At least one ADD2 (when present) shall be implemented.
Local Control (See Section 9.4.1.1[a]) Restricted to Manual ON (See Section 9.4.1.1[b]) Restricted to Partial Automatic ON (See Section 9.4.1.1[c]) Bilevel Lighting Control (See Section 9.4.1.1[d]) Automatic Daylight Responsive Controls for Sidelighting (See Section 9.4.1.1[e]6) Automatic Daylight Responsive Controls for Toplighting (See Section 9.4.1.1[f]6) Automatic Partial OFF (See Section 9.4.1.1[g] [Full Off complies]) Automatic Full OFF (See Section 9.4.1.1[h]) Scheduled Shutoff (See Section 9.4.1.1[i])
Common Space Types1 LPD, W/ft2 RCR Threshold a b c d e f g h i
Atrium
... that is <20 ft in height 0.03/ft total height NA REQ ADD1 ADD1 REQ REQ ADD2 ADD2
... that is ≥20 ft and ≤40 ft in height 0.03/ft total height NA REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... that is >40 ft in height 0.40 + 0.02/ft total height NA REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Audience Seating Area
... in an auditorium 0.63 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a convention center 0.82 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a gymnasium 0.65 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a motion picture theater 1.14 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a penitentiary 0.28 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
... in a performing arts theater 2.43 8 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a religious building 1.53 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a sports arena 0.43 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
... all other audience seating areas 0.43 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
Banking Activity Area 1.01 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Breakroom (See Lounge/
Breakroom)
Classroom/Lecture Hall/
Training Room
... in a penitentiary 1.34 4 REQ ADD1 ADD1 REQ REQ REQ REQ
... all other classrooms/lecture halls/training rooms 1.24 4 REQ ADD1 ADD1 REQ REQ REQ REQ
Conference/Meeting/Multipurpose Room 1.23 6 REQ ADD1 ADD1 REQ REQ REQ REQ
Confinement Cells 0.81 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Copy/Print Room 0.72 6 REQ ADD1 ADD1 REQ REQ REQ REQ
Corridor2
... in a facility for the visually impaired (and not used primarily by the staff)3 0.92 width <8 ft REQ REQ REQ REQ ADD2 ADD2
... in a hospital 0.99 width <8 ft REQ REQ REQ ADD2 ADD2 ADD2
... in a manufacturing facility 0.41 width <8 ft REQ REQ REQ ADD2 ADD2
... all other corridors 0.66 width <8 ft REQ REQ REQ REQ ADD2 ADD2
Courtroom 1.72 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Computer Room 1.71 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Dining Area
... in a penitentiary 0.96 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a facility for the visually impaired (and not used primarily by staff)3 2.65 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in bar/lounge or leisure dining 1.07 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in cafeteria or fast food dining 0.65 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in family dining 0.89 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... all other dining areas 0.65 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Electrical/Mechanical Room7 0.42 6 REQ REQ REQ
Emergency Vehicle Garage 0.56 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
Food Preparation Area 1.21 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Guest Room 0.91 6 See Section 9.4.1.3b.
Laboratory
... in or as a classroom 1.43 6 REQ ADD1 ADD1 REQ REQ REQ REQ ADD2 ADD2
... all other laboratories 1.81 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Laundry/Washing Area 0.60 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Loading Dock, Interior 0.47 6 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
Lobby
... in a facility for the visually impaired (and not used primarily by the staff)3 1.80 4 REQ REQ REQ REQ ADD2 ADD2
... for an elevator 0.64 6 REQ REQ REQ ADD2 ADD2
... in a hotel 1.06 4 REQ REQ REQ ADD2 ADD2
... in a motion picture theater 0.59 4 REQ REQ REQ ADD2 ADD2
... in a performing arts theater 2.00 6 REQ REQ REQ REQ ADD2 ADD2
... all other lobbies 0.90 4 REQ REQ REQ REQ ADD2 ADD2
Locker Room 0.75 6 REQ ADD1 ADD1 REQ REQ REQ REQ
Lounge/Breakroom
... in a healthcare facility 0.92 6 REQ ADD1 ADD1 REQ REQ REQ REQ
... all other lounges/breakrooms 0.73 4 REQ ADD1 ADD1 REQ REQ REQ REQ
Office
... enclosed and ≤250 ft2 1.11 8 REQ ADD1 ADD1 REQ REQ REQ REQ
... enclosed and >250 ft2 1.11 8 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... open plan 0.98 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Parking Area, Interior 0.19 4 See Section 9.4.1.2.
Pharmacy Area 1.68 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Restroom
... in a facility for the visually impaired (and not used primarily by the staff)3 1.21 8 REQ REQ REQ REQ
... all other restrooms 0.98 8 REQ REQ REQ REQ
Sales Area4 1.44 6 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
Seating Area, General 0.54 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
Stairway The space containing the stairway shall determine the LPD and control requirements for the stairway.
Stairwell 0.69 10 REQ REQ REQ REQ REQ ADD2 ADD2
Storage Room
... <50 ft2 1.24 6 REQ ADD2 ADD2
... ≥50 ft2 and ≤ 1000 ft2 0.63 6 REQ ADD1 ADD1 REQ REQ REQ
... all other storage rooms 0.63 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Vehicular Maintenance Area 0.67 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Workshop 1.59 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Building Type Specific/Space Types1 LPD W/ft2 RCR Threshold a b c d e f g h i
Facility for the Visually
Impaired3
... in a chapel (used primarily by residents) 2.21 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a recreation room/common living room (and not used primarily by staff) 2.41 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Automotive (See
"Vehicular Maintenance
Area")
Convention Center—Exhibit Space 1.45 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Dormitory—Living Quarters 0.38 8 REQ
Fire Station—Sleeping Quarters 0.22 6 REQ
Gymnasium/Fitness
Center
... in an exercise area 0.72 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a playing area 1.20 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Healthcare Facility
... in an exam/treatment room 1.66 8 REQ REQ REQ REQ ADD2 ADD2
... in an imaging room 1.51 6 REQ REQ ADD2 ADD2
... in a medical supply room 0.74 6 (See "Storage Room" under "Common Space Types" for control requirements)
... in a nursery 0.88 6 REQ REQ REQ REQ ADD2 ADD2
... in a nurse's station 0.71 6 REQ REQ REQ REQ ADD2 ADD2
... in an operating room 2.48 6 REQ REQ ADD2 ADD2
... in a patient room 0.62 6 REQ REQ REQ REQ ADD2 ADD2
... in a physical therapy room 0.91 6 REQ REQ REQ REQ ADD2 ADD2
... in a recovery room 1.15 6 REQ REQ REQ REQ ADD2 ADD2
Library
... in a reading area 1.06 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in the stacks 1.71 4 REQ ADD1 ADD1 REQ REQ REQ REQ ADD2 ADD2
Manufacturing Facility
... in a detailed manufacturing area 1.29 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in an equipment room 0.74 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in an extra high bay area (>50 ft floor-to-ceiling height) 1.05 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a high bay area (25—50 ft floor-to-ceiling height) 1.23 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a low bay area (<25 ft floor-to-ceiling height) 1.19 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Museum
... in a general exhibition area 1.05 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a restoration room 1.02 6 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Performing Arts Theater—Dressing Room 0.61 6 REQ ADD1 ADD1 REQ REQ REQ REQ
Post Office—Sorting Area 0.94 4 REQ ADD1 ADD1 REQ REQ REQ REQ ADD2 ADD2
Religious Buildings
... in a fellowship hall 0.64 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... in a worship/pulpit/choir area 1.53 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Retail Facilities
... in a dressing/fitting room 0.71 8 REQ ADD1 ADD1 REQ REQ REQ  
... in a mall concourse 1.10 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Sports Arena—Playing
Area
... for a Class I facility 3.68 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... for a Class II facility 2.40 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... for a Class III facility 1.80 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
... for a Class IV facility 1.20 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Transportation Facility
... in a baggage/carousel area 0.53 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
... in an airport concourse 0.36 4 REQ ADD1 ADD1 REQ REQ ADD2 ADD2
... at a terminal ticket counter 0.80 4 REQ ADD1 ADD1 REQ REQ REQ ADD2 ADD2
Warehouse—Storage
Area
... for medium to bulky, palletized items 0.58 4 REQ ADD1 ADD1 REQ REQ REQ REQ ADD2 ADD2
... for smaller, hand-carried items5 0.95 6 REQ ADD1 ADD1 REQ REQ REQ REQ ADD2 ADD2
  1. 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
  2. In corridors, the extra lighting power density allowance is permitted when the width of the corridor is less than 8 ft and is not based on the RCR.
  3. A "Facility for the Visually Impaired" is a facility that can be documented as being designed to comply with the light levels in ANSI/IES RP-28 and is licensed or will be licensed by local/state authorities for either senior long-term care, adult daycare, senior support and/or people with special visual needs.
  4. For accent lighting, see Section 9.6.2(b).
  5. Sometimes referred to as a "Picking Area."
  6. Automatic daylight responsive controls are mandatory only if the requirements of the specified sections are present.
  7. An additional 0.53 w/ft2 shall be allowed, provided that the additional lighting is controlled separately from the base allowance of 0.42 W/ft2. The additional 0.53 w/ft2 allowance shall not be used for any other purpose.
When using the Space-by-Space Method, an increase in the interior lighting power allowance is allowed for specific lighting functions. Additional power shall be allowed only if the specified lighting is installed and automatically controlled, separately from the general lighting, to be turned off during nonbusiness hours. This additional power shall be used only for the specified luminaires and shall not be used for any other purpose unless otherwise indicated.

An increase in the interior lighting power allowance is permitted in the following cases:

  1. For spaces in which lighting is specified to be installed in addition to the general lighting for the purpose of decorative appearance or for highlighting art or exhibits, provided that the additional lighting power shall not exceed 1.0 W/ft2 of such spaces
  2. For lighting equipment installed in sales areas and specifically designed and directed to highlight merchandise, calculate the additional lighting power as follows:

Additional Interior Lighting Power Allowance = 1000 W + (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 Areas 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 may 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.

An additional lighting power allowance shall be permitted for space types with nonmandatory controls installed as identified in Table 9.6.3 when all mandatory controls are used according to Section 9.4. This allowance is added to the interior lighting power allowance and is calculated as follows:

TABLE 9.6.3 Control Factors Used in Calculating Additional Interior Lighting Power Allowance

Space Type
Additional Control Method (in Addition to Mandatory Requirements) Open Office Private Office Conference Room, Meeting Room, Classroom (Lecture/Training) Retail Sales Area Lobby, Atrium, Dining Area, Corridors/Stairways, Gym/Pool, Mall Concourse, Parking Garage
Manual, continuous dimming control or programmable multilevel dimming control 0.05 0.05 0.10 0.10 0
Programmable multilevel dimming control using programmable time scheduling 0.05 0.05 0.10 0.10 0.10
Occupancy sensors controlling the downlight component of workstation specific luminaires with continuous dimming to off capabilities 0.25a 0 0 0 0
Occupancy sensors controlling the downlight component of workstation specific luminaires with continuous dimming to off operation, in combination with personal continuous dimming control of downlight illumination by workstation occupant 0.30a,b 0 0 0 0
Automatic continuous daylight dimming in secondary sidelighted areas 0.10c 0.10c 0.10c 0.10c 0.10c
  1. Control factor is limited to workstation-specific luminaires in partitioned single occupant work spaces contained within an open office environment (i.e. direct-indirect luminaires with separately controlled downlight and uplight components, with the downward component providing illumination to a single occupant in an open plan workstation). Within 30 minutes of the occupant leaving the space, the downward component shall continuously dim to off over a minimum of two minutes. Upon the occupant entering the space, the downward component shall turn on at the minimum level and continuously raise the illumination to a preset level over a minimum of 30 seconds. The uplight component of workstation specific luminaire shall comply with Section 9.4.1.1(h) (automatic full off).
  2. In addition to the requirements described in footnote (b), the control shall allow the occupant to select their preferred light level via a personal computer, handheld device, or similarly accessible device located within the workstation.
  3. Control factors may not be used if controls are used to satisfy exceptions to Section 5.5.4.2.3

Additional Interior Lighting Power Allowance =
Lighting Power Under Control × Control Factor

where

Lighting Power Under Control = the total input watts of all lamps being controlled using the control method indicated
Control Factor = the value given in Table 9.6.3 for the corresponding space type and control method.
When using the Space-by-Space Method, an adjustment of the space LPD is allowed for individual spaces where room cavity ratio (RCR) calculated for the empty room is documented to be greater than the RCR threshold for that space type shown in Table 9.6.1.

RCR = 2.5 × Room Cavity Height × room perimeter length/ room area

where

Room Cavity Height = Luminaire mounting height — Workplane

For corridor/transition spaces, this adjustment is allowed when the corridor is less than 8 ft wide, regardless of the RCR.

The LPD allowance for these spaces may be increased by the following amount:

LPD increase = Base Space LPD × 0.20

where

Base space LPD = the applicable LPD from Table 9.6.1.
Where required by the authority having jurisdiction, the submittal of compliance documentation and supplemental information shall be in accordance with Section 4.2.2.
The following requirements are mandatory provisions and are necessary for compliance with this standard.
Construction documents shall require that within 90 days after the date of system acceptance, record drawings of the actual installation be provided to the building owner or the designated representative of the building owner. Record drawings shall include, as a minimum, the location, luminaire identifier, control, and circuiting for each piece of lighting equipment.
Construction documents shall require for all lighting equipment and lighting controls, an operating and maintenance manual be provided to the building owner or the designated representative of the building owner within 90 days after the date of system acceptance. These manuals shall include, at a minimum, the following:
  1. Submittal data indicating all selected options for each piece of lighting equipment, including but not limited to lamps, ballasts, drivers, and lighting controls.
  2. Operation and maintenance manuals for each piece of lighting equipment and lighting controls with routine maintenance clearly identified including, as a minimum, a recommended relamping/cleaning program and a schedule for inspecting and recalibrating all lighting controls.
  3. A complete narrative of how each lighting control system is intended to operate including recommended settings.
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