1. North Hills Junior High School Pittsburgh, PA Senior Thesis Final Presentation 2005 Chris Rush Lighting / Electrical Faculty Consultant: Dr. Mistrick

2. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

3. Site: Hilltop campus with Senior High and athletics Occupants: North Hills 7th, 8th, and 9th grades Size: 220,000 sq.ft., 3 stories Architect & MEP: Burt Hill Kosar Rittelmann Renovation: 1997-1999 Building Introduction

4. Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

5. Entrance Canopy Main Lobby Auditorium Omitted Designs Lighting Depth

6. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

7. Classroom Lighting Depth Concepts –Clear –Stimulating Considerations –Illuminance 50 fc on workplane 50 fc on chalkboards –Limited VDT use –Daylight –Power Density 1.4 W / sq.ft.

8. Classroom Lighting Depth Option 1 - Recessed –9” x 4’ parabolic –2 T8 lamps –4 Symmetric –11 Asymmetric Option 2 - Pendant –12” x 4’ Direct / Indirect –2 T8 lamps –12 luminaires

9. Classroom Lighting Depth RecessedPendant

10. Classroom Lighting Depth Recessed –61.5 fcWorkplane –62.6 fcLong Chalkboard –49.9 fcShort Chalkboard –1.29 W/sf Pendant –56.7 fcWorkplane –26.9 fcLong Chalkboard –27.0 fcShort Chalkboard –1.03 W/sf

11. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

12. Classroom Daylighting Lighting Depth Daylight Analysis, Radiance –Daylight conditions 5 days –Two-month intervals –June/July omitted 3 times –2.5 hour intervals –7:30 – 3:00 school day 3 sky conditions –Clear, overcast, intermediate –Weighted by weather data –Electric lighting 2 lighting systems 2 zones each

13. Classroom Daylighting Lighting Depth Average: 238 lux Max: 1218 lux Min: 63 lux

14. Classroom Daylighting Lighting Depth Yearly Energy Use Process –Critical point –Dimming % –Power input –Energy per year Two situations –Entire room dimmed as one –Only zone nearest window dimmed

15. Classroom Daylighting Lighting Depth Yearly Energy Use (kWh) UndimmedAll DimmedPartially Dimmed Option 1 - Recessed171014921107 Option 2 - Pendant13681194977 Recessed –9 undimmed –6 dimmed Pendant –8 undimmed –4 dimmed

16. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

17. Classroom Estimates CM Breadth Cost considerations –Ceiling construction Recessed / Pendant Irregular layout –Fixture costs –Wiring runs –Dimming system cost Control wiring Dimming ballasts Photosensor and controls

18. Classroom Estimates CM Breadth UNDIMMED SUMMARIES RECESSEDPENDANT ceiling cost$2,085$1,581 fixture cost$3,030$3,993 wiring cost$928$688 ceiling time41.928.2 fixture time21.112.6 wiring time17.812.1 UNDIMMED total cost$6,043$6,262 total hours80.752.9 ADDITIONAL DIMMING COSTS RECESSEDPENDANT control wire cost$86$59 daylight controls$650 dimming ballast cost$975$780 control wire time1.591.08 DIMMED total cost$7,754$7,750 total hours82.354.0

19. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

20. Classroom Lifecycle Cost CM Breadth Building Life Cycle Cost 5.3 (NIST) –FEMP energy analysis –25 year lifecycle –Pendant / Recessed, Dimmed / Undimmed First costs Energy use ($0.08375 per kWh) –Maintenance and replacement omitted Assumed constant between systems Comparison only

21. Classroom Lifecycle Cost CM Breadth Recessed UndimmedRecessed Dimmed First CostEnergyTotalFirst CostEnergyTotal $6,043$3,374$9,417$7,754$2,184$9,938 Pendant UndimmedPendant Dimmed First CostEnergyTotalFirst CostEnergyTotal $6,262$2,699$8,961$7,750$1,928$9,678 25 year lifecycle

22. Building Introduction Lighting –Entrance Canopy –Main Lobby –Auditorium –Typical Classroom System Comparison Daylight Study Construction Management –Classroom Lighting Estimates –Classroom Lighting Lifecycle Costs Mechanical –Auditorium HVAC Evaluation Electrical Conclusion Presentation Outline

23. Classroom Comparison Conclusion RecessedPendant UndimmedDimmedUndimmedDimmed Workplane Illuminance (fc)61.556.7 Chalkboard Illuminance (fc)62.6, 49.926.9, 27.0 Yearly Energy (kWh)171011071368977 First Cost$6043$7754$6262$7750 Labor Time80.782.352.954.0 25 Yr. Energy Cost$3,374$2,184$2,699$1,928 25 Yr. Total Cost$9,417$9,938$8,961$9,678 Other factors –Aesthetics –Suspension height –Daylight dimming reliability

24. Classroom Comparison Conclusion Recommendations –Recessed Superior chalkboard lighting Minimal cost difference Preferred appearance No height issues –Undimmed Lack of savings Potential unreliability

25. Thank You Faculty –Dr. Mistrick –Dr. Moeck –Professor Parfitt Industry consultants –Ed Wunderley –Discussion board members Family and Friends

26. Questions

27. CONSTANTS area854.7(with 5% waste) LF of wire per LF conduit1.5 costtime added cost of Mark VII ballast$65.00pre-installed ceiling material per SF$0.82time in labor ceiling labor per SF$0.520.016 carrier channels per SFvaries0.017 #12 wiring per LF$0.330.00727 control wiring per LF$0.480.00889 1" conduit per LF$6.790.114 QUANTITIES AND COSTS RECESSEDPENDANT # of fixtures1512 feet of conduit119.2580.875 feet of wire357.75242.625 feet of control wire178.875121.3125 ceiling labor multiplier21 material cost per fixture$145$290 labor cost per fixture$57.00$42.75 cost of carrier channels per SF$0.58$0.51 hours per fixture1.4041.053 UNDIMMED SUMMARIES RECESSEDPENDANT ceiling cost$2,085$1,581 fixture cost$3,030$3,993 wiring cost$928$688 ceiling time41.928.2 fixture time21.112.6 wiring time17.812.1 UNDIMMED total cost$6,043$6,262 total hours80.752.9 ADDITIONAL DIMMING COSTS RECESSEDPENDANT control wire cost$86$59 Wattstopper controls$650 dimming ballast cost$975$780 control wire time1.591.08 DIMMED total cost$7,754$7,750 total hours82.354.0