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The Bahen Centre for Information Technology

The Bahen Centre for Information Technology Spring 2003 Senior Thesis Lighting Design Rebecca Ho Presentation Outline Background Lighting Design Design Concept Gallery Lecture Hall (with acoustics) Meeting Room Conclusions N Presentation Outline Topics not presented:

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The Bahen Centre for Information Technology

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  1. The Bahen Centre for Information Technology Spring 2003 Senior Thesis Lighting Design Rebecca Ho

  2. Presentation Outline Background Lighting Design Design Concept Gallery Lecture Hall (with acoustics) Meeting Room Conclusions N

  3. Presentation Outline Topics not presented: Outdoor Courtyard Lighting Design Electrical Glazing Analysis N

  4. Project Background Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions The Bahen Centre for Information Technology is a facility for information technology, electrical engineering, computer engineering, and industrial engineering education at the University of Toronto

  5. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions The University of Toronto is located in the heart of downtown Toronto in Ontario, Canada

  6. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions The Bahen Centre is located in the St. George campus of the University of Toronto at the intersection of St. George Street and College Street.

  7. Primary Project Team • General Contractor and Construction Management: PCL Constructions Canada Inc. • Architects and Planning: Diamond and Schmitt Architects Inc. • Structural Engineers: • Reed Jones Christoffersen Ltd. • Mechanical Engineers: Keen Engineering • Electrical Engineers and Lighting Design: Crossey Engineering Ltd. • Owner: University of Toronto Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  8. Completed in April 2002 • Total building area 377,000 ft2 (8 stories) • Project cost $100 Million US Dollar • Building features • 11 lecture halls • 14 tutorial/seminar rooms • Over 50 laboratories and offices • It is the largest of its kind amongst Canadian Universities Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  9. Design Concept Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  10. Design Metaphor “Computer Chip and Motherboard” metaphor Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions • Symbolizes knowledge and information • Represented by glowing objects and strategically placed luminaires • The idea of organization and structure represents the coming together of knowledge

  11. Project Design Goals • To provide a non-cluttered and clean look • To highlight and attract attention to architectural elements • To provide an energy efficient design • To maintain design metaphor throughout all the spaces Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  12. Project Design Criteria • To satisfy minimum illuminance levels recommended by the IESNA • Lighting power density must be at or lower than the ASHRAE/IESNA Standard 90.1 ~ 1999 • Other design issues to consider • Glare • Illuminance distribution • Color appearance Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  13. Gallery Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  14. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  15. Design Goals: • To eliminate clutter in the space • To direct movement through corridor • Create a visual interest in the space by enhancing architectural elements Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  16. Design Criteria: • To have an adequately lit corridor for walking • Target illuminance • Horizontal 5 fc • Vertical: N/A • Power allowance: 0.7 W/ft2 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  17. Design Concept: • Fiber optics lining the opt of the red curved wall • Drop ceiling • Cove lighting Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  18. Luminaire and lighting layout: Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  19. Design Renderings Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  20. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  21. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions • Illuminance on floor surface is adequate and evenly distributed

  22. Analysis of gallery lighting design Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Power density OK Power allowance = 0.7W/ft2, with an additional 1.0 W/ft2 for decorative and accent lighting, which = 1.7W/ft2

  23. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions (movie not available in electronic format of presentation. To view movie, go to the individual movie links in the Presentation section of the thesis website)

  24. Lecture Hall Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  25. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Comparison study of two different lighting systems

  26. Design Goals • To provide an even ambient lighting scheme • To highlight architectural detail • To provide adequate illumination on surfaces Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  27. Design Criteria • Consider veiling reflections on surfaces • Vertical illuminance • Flexibility of control • Target Illuminance • Horizontal: 30 fc • Vertical (blackboard): 30 fc • Power Allowance: 1.6 W/ft2 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  28. Design Concept for System #1 Direct system • Compact fluorescent downlight • Concealed linear fluorescent cove fixtures • Recessed wall washer to light front of room Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  29. Luminaire and lighting layout: Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  30. Design Concept for System #2 Indirect System • Suspended indirect fixtures • Orthogonal alignment of indirect fixtures • Concealed fluorescent cove fixtures • Recessed wall washer for front of the room Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  31. Luminaire and lighting layout: Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  32. System Controls Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Control with user preset lighting scenes • Three scenes are needed: • Lecture/General note-taking • Audio/Visual Presentations • Unoccupied/Nightlight

  33. Direct System Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Indirect System

  34. Result of design Direct System Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Indirect System

  35. Direct System Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Indirect System

  36. Design comparison Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Direct System Indirect System Power density of both system exceeds the allowable amount (1.6W/ft2), however this can be corrected with the correct lighting control system

  37. Power density of the lecture/note-taking lighting scene Direct System Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Indirect System Power density OK Power density of System #1 (Direct) is lower than that of System #2 (Indirect)

  38. Result of comparison analysis Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Therefore, Pick System #1 (Direct System) (movie not available in electronic format of presentation. To view movie, go to the individual movie links in the Presentation section of the thesis website)

  39. Acoustics Analysis of Lecture Hall Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  40. Reverberation Time Analysis • The range of reverberation time for a lecture room at 500 Hz is from 0.7 to 1.1 • If the reverberation time is longer than the optimum value ~ room will sound too lively and boomy • If the reverberation time is shorter than the optimum value ~ room will sound dead and flat Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  41. New and old reverberation time comparison Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Therefore, reverberation time OK

  42. Meeting Room Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  43. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  44. Design Goals: • To highlight architectural details in the room • Provide even ambient lighting Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  45. Design Criteria: • Vertical surface illuminance • Flexibility of lighting control system • High color rendering properties • Target Illuminance • Horizontal: 30 fc • Vertical: 5 fc • Power allowance: 1.5 W/ft2 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  46. Design Concept • Use elliptical ceiling in the middle of the room to emphasize shape of room • Concealed fluorescent cove fixtures • Single pendent in middle of room Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  47. Luminaire and lighting layout: Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  48. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

  49. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Horizontal illuminance on the task surface (conference table) is 50 fc, which meets the value recommended by the IESNA Handbook

  50. Analysis of lighting design Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Power density OK Power allowance = 1.5 W/ft2, with an additional 1.0 W/ft2 for decorative and accent lighting, which = 2.5 W/ft2

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