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The Dubois Educational Foundation
Workforce Development & Technology Building
Josh Lutton
Lighting/Electrical Option
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Location: Dubois, Pennsylvania
Professional
Architect: KTH Architects
Mechanical: Dodson Engineering
Electrical: Carl Long & Associates
Civil/Structural: Lee Simpson & Associates
Construction
Cost: Overall $6.9 million
Duration: June 2003 – June 2004
Delivery: Design/Bid/Build
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Building Purposes and Functions•Serves the community’s economy
•Houses multi-purpose classrooms and laboratories
•Heavily technology favored with many rooms solely devoted to computer and computer software classes
•Serves as a career finding/searching tool with a portion of the building rented out to the PA Career Link services.
What kind of feelings do these characteristics evoke?
solid
practicalsensibl
e
connected
durablestrong
established
proficient
potential
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Lobby Entrance – overview• Main entrance to the building
• Small circulation area with a drop ceiling (10 ft)
• Tiles floors
• All brick walls
Design Goals• Main entrance to the building, therefore should project the theme well
• Design should be practical, and serve its purpose
• DOES NOT have to be typical or mundane
• Maintains IES recommended Lighting levels
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Fixture • 2’ x 4’ Troffers evenly spaced throughout the space
• Two 32W Florescent lamps
• Covered with a linear prismatic lens
• Custom mounted, as shown
• Will serve its function very similar to a traditional troffer
Drop Ceiling
Ceiling tile
Fixture and Lamp
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Light loss factors are as follows:Category IV Fixture Assumed to be a clean room12 month cleaning cycleRCR: 4.7 LDD = .88 LLD = 2800/2950 = .95RSDD = .96BF = .87Total LLF = .88 x .95 x .96 x .87 = 0.7
Power DensityPower density is very good at this point even at full load. Assuming we have both lamps on in all the fixtures then the density would be as follows:12 total fixtures x 59 watts per 2 lamp ballast = 708 watts708 watts / 847 sf = 0.835 watts per sf. This is well within the allotted 1.4 w/sf allowed by ASHRAE standards.
Illuminance levels
AVG: 15fc
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Lobby Entrance Renderings
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
PA Career Space – overview• Rented out by the PA Career Link
• Large open area office space
• Carpeted floor, painted white walls, and drop ceiling (10 ft)
• 10 x 9 x 6 cubicles located on left side
Design Goals•Implement skylights to add daylight and reduce energy use
• Extensive VDT (computer) use throughout space must be accounted for
• Maintains IES recommended Lighting levels
Cubicles
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Fixture • 4’ linear indirect fixtures with a solid bottom
• Two 32W T8 florescent lamps
• Will serve as an additional source to the daylight
Skylights• 4’ x 4’ opening to roof
• 8’ x 8’ opening to room
• Roof unit will be pyramid shape by manufacturer
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
The light loss factors are as follows: Category VI Fixture Assumed to be a clean room12 month cleaning cycleRCR: 1.97 LDD = .86 LLD = 2800/2950 = .95RSDD = .88BF = .88
Total LLF = .86 x .95 x .88 x .88 = 0.63
Power Density:The goal of using the skylights was to decrease the power density of the space.35 fixtures with 2 lamps apiece, utilizing a two lamp ballast at max 64W (assume no dimming) 35 x 64 = 2240 watts 2240/3132 sf = 0.72 watts/sf. This is well within range of the 1.25 w/sf maximum required by ASHRAE standards.
December at 9am. Worst case scenario
AVG: 30 fc
December at 9am. Worst case scenario
Vertical illuminance
December at 9am. Worst case scenario
Workplane Illuminance: AVG 40 fc
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Pa Career Space Renderings
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Overview of Lobby and Exterior spaces
Lobby
-Tall space, 30 ft ceilings
-No defined beginning or end
-Characterized by large glass curtain wall on south side
Exterior
-Rear entrance opens to wide open grassy area, and concrete walkways
- Large Architectural metal panels over entrances
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Overview of Lobby
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Overview of Lobby
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Overview of Exterior Space
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Overview of Exterior Space
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Disadvantages of Proposed system
-Longer branch circuit runs
-Less flexibility during maintenance
Advantages of Proposed system
-Smaller equipment size, less quantity
-More flexibility in future expansion
-Less cost in future expansion
-Less initial cost
Advantages of current system
-Excessive use of receptacles makes use of 208/120V advantageous
-Only two transformers used in entire building
-Less confusion during installation and maintenance
Proposed system
-The new system would also be a radial system
-Single transformer, configuration is of Delta-Wye would serve the building, in addition to two extra transformers to step the voltage down in both the MDP and for the emergency power
-Utilization voltage of 480/277V, and 208/120V.
-MDP is rated at 480/277VAC, 60HZ,
1200A
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Current system
-The system serving the DEF Workforce Technology Building is a radial system
-Single transformer, configuration is of Delta-Wye
-Utilization voltage of 208/120V
-MDP is rated at 208Y/120VAC, 60HZ,
2000A
Disadvantages of current system
-Larger equipment, more quantity
-Limited flexibility in future expansion
-Higher cost in future expansion
-Higher initial cost due to larger equipment
Electrical depth work
The building’s current step down voltage is 208/120V. I would like to research the possibility of a step down voltage of 480/277V, it’s advantages and
disadvantages, including cost.
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Research Completed
-Every load was analyzed and accounted for
-All panelboards and switchboards resized
-All panelboards relocated (second floor only)
-Recircuited all of second floor lighting and power to coordinate with new panel boards and get an idea of new branch circuit lengths, etc.
-Cost analysis of old equipment size and installation vs. new equipment size and installation
New panelboard locations
New = RED
Old = BLUE
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Cost analysis
Current System
Number of panelboards: 31
Number of transformers: 2
Proposed System
Number of panelboards: 21
Number of transformers: 4
Final Cost Difference
$15,193.70
Also took into account all feeder runs and circuit breaker costs associated with old
and new system
Electrical summary
-Savings not extraordinarily high
-reasons for this would be the extra transformers nullified a lot of the money saved by the smaller equipment
-had this building been larger, cost savings would have continued to go up very quickly, because no more transformers are needed (larger sizes maybe)
-Still save money regardless
-Added flexibility
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
HAP Output Table
Please note, these loads are from the skylights only, not the total room load
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Mechancal Breadth
My Mechanical Breadth work focused on the PA Career Space and the addition of skylights.
My initial concern was the added skylights would increase the cooling load to a point that the mechanical equipment would need to be resized.
I used HAP (Hourly Analysis Software), and implemented the proper variables to obtain the additional load created by the skylights.
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Skylight load
This number represents the Sensible load from both the skylight transmission and skylight solar loads
45.61 btuh/ft²
1 ton = 12,000 btu
45.61 btuh/ft² x 64 ft² = 2919.04 btuh
2919.04 btuh x 1 ton / 12,000 btu = 0.24 tons
Lamp Heat Dissipation
The number of lamps is actually decreased in the new lighting layout.
1.66 tons = previous lamp energy output
0.67 tons = new lamp energy output
1.66 – 0.67 ~ 0.99 Tons
0.99 Tons - 0.24 = 0.75 Tons (less cooling)
Mechanical conclusionIn conclusion there is no need to resize the mechanical equipment. As I found out, there is actually less cooling needed even with the skylights. This is due to the drastic decrease in number of lamps being used in the PA Career space.
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Structural Breadth For my structural breadth work, I redesigned the structural layout and sizes of the joists surrounding the skylights in the PA Career Space.
Structural AnalysisAfter taking into account all the variables and calculating Dead Load and Live Load, I was able to size the joist according to the proper spans and lengths. These loads are not taking into account the skylights, so we are over sizing slightly.
Dead Load = 432.9 plf
Live Load = 312 plf
Structural Study Conclusion
In conclusion, it appears the skylights will not be a very large
problem in terms of resizing or cost. While new joist sizes are larger
surrounding the skylights only, the proposal also omits four joists from the original plan. This should offset any significant cost associated with
this change.
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Original layout
Dead Load = 432.9 plfLive Load = 312 plf
Proposed Layout
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Presentation Preview
Illumination
•Lighting Schematic Design
•Lighting Design of Lobby Entrance
•Lighting Design of PA Career Space
•Brief overview of Lobby and Exterior Lighting Design
Electrical Depth•Implementation of 480/277V to existing system
Mechanical Breadth•Analysis of extra cooling load due to addition of skylights
Structural Breadth•Analysis of current structural system after implementation of skylights
SummaryAcknowledgementsQuestions
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
SummaryLighting - Lobby
Entrance
- Simple but not common
Lighting - PA Career Space
- Skylight additions
Electrical
-Saved on initial cost
-Increased flexibility
Mechanical
- No increase in sizing needed
Structural
- Smooth implementation of skylights
Final Cost Difference
$15,193.70
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
AcknowledgementsProfessional
Mark Bodenschatz – PSU OPP
Greg Alexander – CJL Engineering
Academic
Dr. Richard Mistrick
Dr. Martin Moeck
Professor Kevin Parfitt
Jonathan Dougherty
Peers
Jessica Muldowney
My family
People named Dave
The crew at 333 Sackett - “The Office”
Dubois Educational Foundation Workforce Development & Technology Building
Josh Lutton Lighting/Electrical
Questions?
Done!2005