6.3: Lighting Design and Systems

(32 maximum points possible)

6.3.1 Daylighting and Views (12 points)

GREEN GLOBES #6.3.1.1 - ANSI #11.3.1.1 For regularly occupied floor area is a minimum daylight factor (DF) of at least 2 (excluding all direct sunlight penetration) achieved?

• ≥75% of the floor area achieves a DF of 3 or more (5 points) 
• ≥50 and <75% of the floor area achieves a DF of 3 or more (4 points) 
• ≥25 and <50% of the floor area achieves a DF of 3 or more (3 points) 
• ≥75% of the floor area achieves a DF of 2 to <3 (2 points) 
• ≥50 and <75% of the floor area achieves a DF of 2 to <3 (1 points) 
• None of the above (0 points)

Assessment Guidance

Estimate the DF for a daylit space that has vertical windows using the following formula:

DF = 0.1 x PG, where:

• DF = daylight factor
• PG = percentage of glass to floor area (area of the windows/floor area)
• DF = 0.1 x PG, where:
  • DF = daylight factor
  • PG = percentage of glass to floor area (area of the windows/floor area)

References

• New Building Institute –Advanced Buildings® Daylighting pattern guide 
• Daylighting 
• Architectural Lighting Magazine –Benefits of Natural Light 
• ASHRAE Advanced Energy Design Guides 
• Whole Building Design Guide (WBDG): Sustainability of Building Envelope, 2016
• RADIANCE software (for evaluation) Validated Lighting Simulation Tool 
• International Commission on Illumination

Recommended Documents 

• Percentages and calculations for primary occupied spaces with IESNA recommended task lighting levels 
• Percentages and calculations for occupied areas with daylight illumination levels 
• Construction Documents

GREEN GLOBES #6.3.1.2 - ANSI #11.3.1.2 What percentage of regularly occupied task areas are designed to have clear views to the exterior or atria within 25 ft. (7.6 m) from a window?

• ≥90% (3 points) 
• ≥60% and <90% (2 points) 
• ≥40% and <60% (1 points) 
• <40% (0 points)

Recommended Documents

• Percentage and calculations for views to building exterior or atria 
• Construction Documents

GREEN GLOBES #6.3.1.3 - ANSI #11.3.1.3 What type of shading devices are used for southern, western, and eastern exposures?

• Active automated shading devices (2 points) 
• Passive shading devices (1 points) 
• No shading device are used (0 points)

Assessment Guidance

Active automated shading devices (e.g. automated widow shades or electrochromic glazing) that automatically adjust based on sky conditions for all listed exposures;

Passive shading devices (e.g. manual window shades or permanent projections such as overhangs).

Recommended Documents 

• Specifications for solar shading devices and luminaries

GREEN GLOBES #6.3.1.4 - ANSI #11.3.1.4 What percentage of daylit areas (with a Daylight Factor of at least 2) use photo-sensors to maintain consistent lighting levels throughout the day using both daylighting and electric lighting?

• >75% (2 points) 
• ≥50% and ≤75% (1 points) 
• <50% (0 points)

Recommended Documents 

• Percentages and calculations for primary occupied spaces with IESNA recommended task lighting levels 
• Percentages and calculations for occupied areas with daylight illumination levels 
• Lighting plans 
• Construction Documents

6.3.2 Lighting Design Quantity (9 points)

GREEN GLOBES #6.3.2.1 - ANSI #11.3.2.1 What percentage of regularly occupied spaces meet the Recommended Illuminance for the Locations/Tasks in Table 11.3.2.1-A and Table 11.3.2.1-B?

• ≥90% (5 points) 
• ≥70% and < 90% (4 points) 
• ≥50% and <70% (2 points) 
• <50% (0 points)

Assessment Guidance

“Recommended vertical and horizontal illuminance targets” are found in the IES Lighting Handbook, 10th Edition, Table 22.2 and Applications Sections 21-37 OR Table 11.3.2.1-A: IES Illuminance Categories and Table 11.3.2.1-B: IES Task/Location Categories.

Lighting levels may be increased or decreased by 10% (max.) based on Occupant Age, Visual Performance Requirements, or other weighting factors as detailed in the IES Lighting Handbook, 10th Edition Table 4.1,the following weighting factors:

References 

• IESNA Lighting Handbook, 10th Edition, 2011

Recommended Documents

• Percentages and calculations for primary occupied spaces with IESNA recommended task lighting levels 
• Lighting plans 
• Construction Documents

GREEN GLOBES #6.3.2.2 - ANSI #11.3.2.2 Do luminance ratios avoid exceeding the following as per IESNA for tasks? 

• 3:1 between the task and adjacent surroundings 
• 10:1 between the task and remote (nonadjacent) surfaces 
• 20:1 between the brightest and darkest surface in the field of view 
• 8:1 between rows of luminaires where there is indirect lighting and where ceiling luminance exceeds 124.1 fL (425 cd/m2)
  • Yes (2 points)
  • No (0 points)
  • N/A

Assessment Guidance

Not applicable where spaces are designed such that source/task eye geometry do not require IESNA Standard VDT compliant luminaires.

Recommended Documents 

• Percentages and calculations for primary occupied spaces with IESNA recommended task lighting levels

GREEN GLOBES #6.3.2.3 - ANSI #11.3.2.3 Does the average luminance avoid exceeding at least one of the following values for given luminaire angles where there is direct lighting? 

• 248.1 fL (850 cd/m2) at 65° from the vertical 
• 102.2 fL (350 cd/m2) at 75° from the vertical 
• 51.1 fL (175 cd/m2) at 85° from the vertical
  • Yes (2 points)
  • No (0 points)
  • N/A

Assessment Guidance

Not applicable where spaces are designed such that source/task eye geometry do not require IESNA Standard VDT compliant luminaires.

Recommended Documents 

• Percentages and calculations for primary occupied spaces with IESNA recommended task lighting levels

6.3.3 Lighting Design Quality (6 points)

GREEN GLOBES #6.3.3.1 - ANSI #11.3.3.1 Does regularly occupied space use electric light sources with a minimum Color Rendering Index (CRI) of 80?

• Yes (1 point)
• No (0 points)

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation

GREEN GLOBES #6.3.3.2 - ANSI #11.3.3.2 Does regularly occupied space use electric light sources with a Correlated Color Temperature (CCT) between 2700°K and 4500°K?

• Yes (1 point)
• No (0 points)
• N/A

Assessment Guidance

Not applicable to specialty retail, medical, or exterior environments.

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation

GREEN GLOBES #6.3.3.3 - ANSI #11.3.3.3 Does regularly occupied spaces use no more than 50% direct only general lighting?

• Yes (2 points)
• No (0 points)

Assessment Guidance

Direct only general lighting limits Direct Glare to no more than 50° above horizontal; Direct Glare includes direct view of the light source and luminances over 2,335 fL (8,000 cd/m²).

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation

GREEN GLOBES #6.3.3.4 - ANSI #11.3.3.4 Is individual control of primary workspace lighting provided for at least 90% of occupants?

• Continuous dimming of at least 10% to 100% (2 points) 
• Stepped dimming or switching with at least three steps (100%, 50%, 0%) (1 points) 
• Neither (0 points)

Assessment Guidance

“Control” may either be dimming from 100% to at least 10% or stepped dimming with at least three (3) steps: 100%, 50% and 0%.

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation 
• Lighting plans

6.3.4 Lighting Sustainability (5 points)

GREEN GLOBES #6.3.4.1 - ANSI #11.3.4.1 Do a minimum of 75% of electric light sources have a Lumen Maintenance factor of 35,000 hours to L70 or greater?

• Yes (2 points)
• No (0 points)

Assessment Guidance

The output of the lights have lost no more than 30% of their initial output at 35,000 hours. 35,000 hours is based on at least 1 hour of operation per start.

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation

GREEN GLOBES #6.3.4.2 - ANSI #11.3.4.2 Are all luminaires RoHS compliant with EU Directive 2011/65/EU of the European Parliament?

• Yes (2 points)
• No (0 points)

Assessment Guidance

RoHS specifies maximum levels for the following six restricted materials: 

• Lead (Pb): < 1000 ppm; 
• Mercury (Hg): < 100 ppm; 
• Cadmium (Cd): < 100 ppm; 
• Hexavalent Chromium: (Cr VI) < 1000 ppm; 
• Polybrominated Biphenyls (PBB): < 1000 ppm; and
• Polybrominated Diphenyl Ethers (PBDE): < 1000 ppm.

Certification is provided by the luminaire manufacturer.

Recommended Documents 

• Manufacturer’s specifications, cut sheets, and performance documentation

GREEN GLOBES #6.3.4.3 - ANSI #11.3.4.3 Is a maintenance and operations plan documented and supplied to the building owners, management, and maintenance?

• Yes (1 point)
• No (0 points)

Assessment Guidance

The maintenance plan includes the following: 

• Reflected ceiling plan; 
• Lighting fixture schedule (luminaire catalog numbers, manufacturer, lamp, wattage, beam spread, color temperature, and color rendering index); 
• Initial measured foot-candle levels in each space;
• Cleaning instructions and cleaning schedule; and 
• Lighting sequence of operations for each space (e.g. what the lights are supposed to do when someone enters the room, what are the light levels they can choose, what controls are in each space).

Recommended Documents 

• Maintenance, cleaning, and recycling plan

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