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

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

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: 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

Entrance Canopy Main Lobby Auditorium Omitted Designs Lighting Depth

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

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.

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

Classroom Lighting Depth RecessedPendant

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

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

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

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

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

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

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

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

Classroom Estimates CM Breadth UNDIMMED SUMMARIES RECESSEDPENDANT ceiling cost$2,085$1,581 fixture cost$3,030$3,993 wiring cost$928$688 ceiling time fixture time wiring time UNDIMMED total cost$6,043$6,262 total hours ADDITIONAL DIMMING COSTS RECESSEDPENDANT control wire cost$86$59 daylight controls$650 dimming ballast cost$975$780 control wire time DIMMED total cost$7,754$7,750 total hours

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

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 ($ per kWh) –Maintenance and replacement omitted Assumed constant between systems Comparison only

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, year lifecycle

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

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

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

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

Questions

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$0.82time in labor ceiling labor per SF$ carrier channels per SFvaries0.017 #12 wiring per LF$ control wiring per LF$ " conduit per LF$ QUANTITIES AND COSTS RECESSEDPENDANT # of fixtures1512 feet of conduit feet of wire feet of control wire 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 fixture UNDIMMED SUMMARIES RECESSEDPENDANT ceiling cost$2,085$1,581 fixture cost$3,030$3,993 wiring cost$928$688 ceiling time fixture time wiring time UNDIMMED total cost$6,043$6,262 total hours ADDITIONAL DIMMING COSTS RECESSEDPENDANT control wire cost$86$59 Wattstopper controls$650 dimming ballast cost$975$780 control wire time DIMMED total cost$7,754$7,750 total hours