Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Part 3d: Redesign of Outdoor Courtyard Area
Outdoor Courtyard Area
General Description: See Fig. 83
• Sitting areas, stepped concrete platform, walkway to rest of campus, approx 100 ft
wide x 70 ft deep
• Directly beyond atrium, access from art wings and lobby
Figure 83: View from central sidewalk
The outdoor courtyard area is a concrete sitting area and walkway that provides the main
link between the high school building and the rest of the Learning Corridor campus. These
walkways should be lit properly for security and also to help create the visual link. The two
main exits that lead from the building will need to be lit for directional and security
purposes.
Suggested quality and systems performance:
IESNA Lighting Design Guide in IESNA Lighting Handbook
Luminous Environment
Outdoor Lighting, General
ƒ Entrances
- Horizontal illuminance level of 5fc minimum
- Vertical illuminance level of 3fc minimum
ƒ Pathways away from the building
- Horizontal illuminance level of 1 fc minimum
- Vertical illuminance of 3fc minimum
ƒ Steps away from the building
- Horizontal illuminance level of 1fc minimum
- Vertical illuminance level of 3fc minimum
Design Criteria:
• Create a safe, inviting environment
65
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
•
Security lighting
o Safe movement of people on walkways, platform, two exits
o Sitting, entrance areas: 3fc min horiz., 3fc min vert.
o Pathways, platform steps: 1fc min horiz., 0.3 fc min vert.
Design Concepts:
1. Provide security lighting to light faces and pathways
2. Use full cutoff fixtures for dark sky requirements
3. Continue connection from building to rest of campus by creating visual link.
Fixture Schedules and Light Loss Factor Tables:
The calculated power density is based on the total pathway area that was illuminated by all
the fixtures. The following are calculations of power density based on the requirements for
ASHRAE/IESNA Standard 90.1 for outdoor spaces:
175W/6 lin ft of door width = 29.2 W/lin ft which is less than the
33 W/lin ft of door width for building entrance without canopy stated by code.
The LED fixtures are added on the corners of the top of each step as a safety precaution
on the stairs. Even though the steps aren’t used at night, the LED’s provide for orientation
so that people will be able to walk safely around them.
Equipment Used: See Appendix 1—Cut Sheets
66
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Layout:
Figure 84: Plan View of Layout
Fixture K1 mounted 7ft above grade.
Fixture J1 mounted 15ft on pole above grade.
Circuiting and Controls:
Figure 85: Plan View of Circuiting
67
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Switch 1: All Wall Mounted 175W MH Door Fixtures and all White LED Fixtures
(for Stair Orientation)
3 Door Fixtures * 2.0 A/Fixture = 6.0 A Total
6 LED Fixtures * 0.51W/Fixture = 3.06 A Total
Switch 1 = 9.06 A Total on LP1E, 23
Switch 2: All 250W MH Pole Fixtures
5 Fixtures * 2.5 A/Fixture = 12.5 A Total on LP1E, 24
In order to comply with ASHRAE 90.1, a seven-day or calendar year electronic
programmable time switch with battery backup will be provide as the automatic shut-off.
Intermatic Next Generation Time Switch Model # ET71615CR will be used to control the
light year round. See Appendix 1 for cut sheet.
Analysis of Systems:
Outdoor Renderings:
Figure 86: View of Courtyard from main campus walkway
Figure 87: View of Courtyard from main campus walkway
68
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Figure 88: View of Sitting area
Figure 89: View of Sitting area and pathway
Figure 90: View of building path up to atrium entrance
69
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Figure 91: View of pathway from sitting area up to building
Figure 92: View of pathway away from building at atrium exit
Figure 93: Plan view of courtyard from above
70
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
Outdoor Light Levels:
All pathways have a minimum of 3 fc
View Walking up to Building
71
Cherise Rollins
Lighting/Electrical Option
The Learning Corridor, Hartford, CT
Faculty Consultant: Dr.Mistrick
Submission Date: April 2, 2004
All light on door exits/entrances 3 fc minimum
Conclusions:
The proposed lighting design for the outdoor courtyard satisfies the design goals and
criteria established for the space. The designs create an atmosphere that will increase
security at night by providing a minimum of 3 fc on all the pathways, and also by uses area
lighting to illuminate faces. The designs also creates a comfortable, secure atmosphere
for the concrete sitting area that might be used at night during school performances or
conferences since the area is just right outside the auditorium. The design also supports
the building metaphor because it makes a connection to the rest of the campus by
illuminating the pathway that connects the building to the campus. The design also uses
only full-cut off fixtures that will satisfy any dark-sky requirements for the surrounding
community.
The design also satisfies the power density requirements established by ASHRAE/IESNA
Standard 90.1 for outdoor spaces. The space also conforms to automatic control
requirements by using a seven-day or calendar year electronic programmable time switch
with battery backup.
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