L I G H T I N G E N E R G Y & S U S TA I N A B I L I T Y
FOCUS
Document how much electrical power the design will consume. Compare this to code requirements for improved lighting quality and sustainability.
WATTAGE TOTAL WATTS PER TOTAL WATTS USED TOTAL WATTS USED ACTUAL DESIGN
FIXTURE TYPE & FAMILY LUMEN OUTPUT OPTIONS FIXTURE IN DESIGN IN WAITING ROOM LIGHTING POWER
ONLY DENSITY
EVO6PC Cylinder
EVO 6” LED round
120, 120-277, 29.5W x 49 Fixtures 29.5W x 3 Fixtures
cylinder with pendant 250 LM 29.5 0.28 W/ft²
stem mount 277, 347 1445.5 Total Watts 88.5 Total Watts M6 A1
by Gotham Lighting
RESTAURANT
BRM9L TUWH
Linear
Bruno LED-Dynamic
120 31.6 21.6W x 9 Fixtures 21.6W x 3 Fixtures 0.34 W/ft²
1000 L/FT
Tunable White 194.4 Total Watts 64.8 Total Watts
Suspended Linear
by Peerless
6100 Benno LED
Drums Pendant
by Winona Lighting 3539 - 6738 120V, 277V, 347V 85.8 85.8W x 9 Fixtures 85.8W x 3 Fixtures 0.53 W/ft²
16679 Total Watts 255 Total Watts
6102 Benno LED NTS
Drums LED Wall
Sconce 860 120V, 277V, 347V 32.2 32.2W x 11 Fixtures 32.2W x 0 Fixtures 1.3 W/ft²
by Winona Lighting 354.2 Total Watts 0 Total Watts LIGHTING ENERGY &
SUSTAINABILITY
TOTAL 18673 Total Watts 398 Total Watts
M6
L I G H T I N G E N E R G Y & S U S TA I N A B I L I T Y
FOCUS
Find out how many points your design would earn under LEED v4 ID+C Credit 2 Optimize Energy Performance and Credit 6 Interior Lighting.
CODE REQUIREMENT OPTIMIZE LIGHTING ENERGY OPTIMIZE LIGHTING QUALITY
Directive: Keep within your “Lighting Energy Intent: Achieve increasing levels of energy performance beyond the prerequisite standard to reduce environmental Intent: Promote occupants’ productivity, comfort, and well-being by providing high-quality
Budget” and economic harms associated with excessive energy use. lighting.
Reference: References: References:
Ohio Energy Code IECC 2012/ASHRAE LEED v4 ID+C LEED v4 ID+C
90.1-2010 (PDF in Canvas)Table 9.6.1 Energy and Atmosphere (E&A) Interior Environmental Quality (IEQ)
Lighting Power Densities Using the Space- Credit 2 Optimize Energy Performance Credit 6 Interior Lighting
by-Space Method ANSI/ASHRAE/IESNA Table 2. Points for percentage reduction in lighting power density
Standard 90.1-2010
Q1. What is the area of your space? Q1. Interior Lighting Power. According to Credit 2 Optimize Energy Performance Table 2 “Points for percentage Q1. Lighting Quality. Summarize the 8 strategies for Lighting Quality found in this credit. At
reduction in lighting power density,” what are the maximum watts you can use in the design to meet each LEED least 4 strategies are required to earn 1 point. Consider which strategies are suitable for your
A: 5168 ft2
point level requirement? design.
A: Calculate max. allowable watts for each point in the center column below:
M6 A2
A: 2, 3, 4, 5, 6, 7, 8
Referring to Table 9.6.1, which “Space Type” Percent reduction from Calculate max. allowable watts for points Points Earned 1. Use light fixtures with a luminance of 6. Furniture finishes must have surface reflectance
best describes your space? code max LDP. for space 0.65 watts/ft2 (reduced LPD) x ___ ft2 (space area) = less than 2,500 cd/m2 (45º – 90º) no more than: 45% for work surfaces, and 50% for
type ___watts movable partitions.
A: Waiting Room for Restaurant
2. Use light sources with a color
(0.65 watts/ft2)
rendering index of 80 or higher
RESTAURANT
10% 0.59 watts/ft2 x 5168 ft2 = 3023 watts 1 7. 75% of the ratio of average wall surface
illuminance to average work plane must not exceed
Multiply max. LPD by .90
3. At least 75% of the lights must be 1:10 and have surface reflectance of 60% for walls.
15% 0.55 watts/ft2 x 5168 ft2 = 2842 watts 2
rated to last 24,000 hours
Multiply max. LPD by .85 8. 75% of the ratio of average ceiling illuminance to
20% 0.52 watts/ft2 x 5168 ft2 = 2687 watts 3 work surface must not exceed 1:10 and have
Multiply LPD by .80 4. Only 25% of the lighting must be surface reflectance of 85% for ceilings.
25% 0.49 watts/ft2 x 5168 ft2 = 2519 watts 4 direct overhead
Multiply LPD by .75
5. 90% of the floor area must have
surface reflectance no more than: 85%
for ceilings, 60% for walls, and 25% for
floors.
Q2. Per Table 9.6.1, what is the maximum Q2. Interior Lighting Controls. What two types of energy-conserving lighting controls can be used to earn points Q2. Lighting Control. What types of lighting controls are required to earn 1 point within Credit
Lighting Power Density (LPD) for this space within Credit 2 Optimize Energy Performance? Is this type of lighting control suitable for your design? 6 Interior Lighting? Is this type of lighting control suitable for your design?
type?
A: Yes, these controls work for my design A: All types are suitable but only (3) seen in the waiting area
A: 0.65 watts/ft2
1. Daylighting Controls (1 point) 1. Multizone control systems that enable occupants to adjust the lighting to meet group
2. Occupancy Sensor Lighting Controls (1 point) needs with at least three lighting levels
2. Lighting for any projection wall must be separately controlled.
3. Switches must be located in the same space as the controlled luminaires. A person
operating the controls must have a direct line of sight to the controls.
Q3. What maximum total number of watts Q3. How many LEED points does your project earn within Credit 2 Optimize Energy Performance and why? Q3. How many LEED points does your project earn within Credit 6 Interior Lighting?
does this represent for the space?
A: My allowable lighting power is 3359 watts A:
A: 5168 ft2 x 0.65 watts/ft2 = 3359 watts
4 points for Interior Lighting Power. My project’s actual lighting design uses a total of 398 watts. My project’s LPD 1 point for Interior Lighting Control. My project earned these points through switches located in NTS
is 0.08 watts/ft2. This represents a percent reduction of 88%. the same space as the controlled luminaires. Due to it being a waiting area the room will be
controlled by the workers and not individual occupants.
2 points for Interior Lighting Controls. My project earned these points through daylight controls given the large
window exposure and occupancy sensors for when no one is waiting in the area 1 point for Interior Lighting Quality. My project earned these points through strategies 2-5 listed LIGHTING ENERGY &
about. All lights are LED rated with over 24000 live spans, a CRI of 80 or more, with very little
reflective illuminance.
SUSTAINABILITY
M6.1
ELECTRICAL POWER & LIGHTING
CONTROL FLOOR PLAN
GOALS
Locate dedicated outlets, convenience outlets, and a wireless booster in the room for guests so that guests may access the internet. If any reception, office or clinical
staff work within your waiting room, also include provisions for telephone and data outlets for each workstation.
LIGHTING ZONES
Indicated by dashed connection
lines
Bruno Benno Evo
Type of controls
Benno Seen in pendant, can (2), & sconce lights
1. Dimming
2. Timer
M6 B & C
Specialty controls
Seen in can (3) & track lighting
D
3. Daylight sensor
4. Occupancy sensor RESTAURANT
Lighting Controls
$ Switch
$D Dimmer Switch
Telephone Outlet
D D
Data Outlet
Wireless Signal
Booster
Sensors
* all data outlets conform
with ADA requirements for
reach
DESIGN CRITERIA
Given the nature of the space
controls are very important to set NTS
moods and portray appropriate
light quantity. The waiting area
is theoretically the most used REFLECTED CEILING
area so it requires proper lighting PLAN
for the host and occupants.
Although the area is spastically
used in which sensors will help
control the electrical output. M6.3
