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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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Presentation Transcript
slide1

The Bahen Centre for Information Technology

Spring 2003 Senior Thesis

Lighting Design

Rebecca Ho

slide2

Presentation Outline

Background

Lighting Design

Design Concept

Gallery

Lecture Hall

(with acoustics)

Meeting Room

Conclusions

N

slide3

Presentation Outline

Topics not presented:

Outdoor Courtyard Lighting Design

Electrical

Glazing Analysis

N

project background
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

slide5

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

slide6

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.

slide7

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

slide8

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

design concept

Design Concept

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

design metaphor
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
project design goals
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

project design criteria
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

gallery

Gallery

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide14

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide15
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

slide16
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

slide17
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

slide18
Luminaire and lighting layout:

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide19
Design Renderings

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide20

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide21

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

  • Illuminance on floor surface is adequate and evenly distributed
slide22
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

slide23

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)

lecture hall

Lecture Hall

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide25

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

Comparison study of two different lighting systems

slide26
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

slide27
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

slide28
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

slide29
Luminaire and lighting layout:

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide30
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

slide31
Luminaire and lighting layout:

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide32
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
slide33

Direct System

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

Indirect System

slide34
Result of design

Direct System

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

Indirect System

slide35

Direct System

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

Indirect System

slide36
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

slide37

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)

slide38

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)

acoustics analysis of lecture hall

Acoustics Analysis of Lecture Hall

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide40
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

slide41
New and old reverberation time comparison

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

Therefore, reverberation time OK

meeting room

Meeting Room

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide43

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide44
Design Goals:
  • To highlight architectural details in the room
  • Provide even ambient lighting

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide45
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

slide46
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

slide47
Luminaire and lighting layout:

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide48

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

slide49

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

slide50
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

slide51

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)

conclusions

Conclusions

Background

Design Concept

Gallery

Lecture Hall

(acoustics)

Meeting Room

Conclusions

conclusions53
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

many thanks to
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