Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions The Bahen Centre for Information Technology Spring 2003 Senior Thesis Lighting Design Rebecca Ho

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Topics not presented: Outdoor Courtyard Lighting Design Electrical Glazing Analysis Presentation Outline N

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions 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 Primary Project Team

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Completed in April 2002 Total building area 377,000 ft 2 (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 Design Concept Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

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

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

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

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Design Criteria: To have an adequately lit corridor for walking Target illuminance –Horizontal 5 fc –Vertical: N/A Power allowance: 0.7 W/ft 2 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

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

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

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Analysis of gallery lighting design Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Power allowance = 0.7W/ft 2, with an additional 1.0 W/ft 2 for decorative and accent lighting, which = 1.7W/ft 2 Power density OK

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions 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 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions 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/ft 2

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

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

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

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Design comparison Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Power density of both system exceeds the allowable amount (1.6W/ft 2 ), however this can be corrected with the correct lighting control system Direct System Indirect System

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Result of comparison analysis 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)

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

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

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions 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/ft 2 Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

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

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

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Analysis of lighting design Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Power density OK Power allowance = 1.5 W/ft 2, with an additional 1.0 W/ft 2 for decorative and accent lighting, which = 2.5 W/ft 2

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

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

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Lighting –All lighting design goals were met Aesthetically pleasing lighting design that highlighted architectural features Used mostly recessed or concealed luminaires to eliminate clutter in the spaces Energy efficient design by the use of only fluorescent luminaires Illuminance levels on surfaces were sufficient in all spaces Acoustical –Acoustics in Lecture Hall can be improved to the optimal reverberation time level by changing the floor material, and covering the cove openings. Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Many thanks to… Allyson Chrysler and Dave Sylvester ~ Crossey Engineering Ltd. Ben Louie ~ University of Toronto Dr. Moeck, Dr. Mistrick, Professor Ling, and Jonathan Dougherty Electrical Consultant ~ John Reese Fellow AE’s and especially the wonderful Lighting group… Andrew Tech and my family

Background Design Concept Gallery Lecture Hall (acoustics) Meeting Room Conclusions Questions?