R e v i s e d T h e s i s P r o p o s a l

JENNA STAUFFER LIGHTING/ELECTRICAL

FACULTY ADVISOR: PROF. DANNERTH & DR. MISTRICK JANUARY 15, 2009

Connecticut Science Center Hartford, CT

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T a b l e O f C o n t e n t s

Executive Summary………………………………………………...………..Page 3

Background: CSC……………………………………..………...…………...Page 4

Lighting Depth………………..………...………………………………...…..Page 7

Overview………..…....…….………………………………………...Page 7

Lutron Comments………..…..……………………………………...Page 7

Solution…………..…....…….………………………………………...Page 8

Open/Private Office..…….………………………………..Page 8

Theater………………...…….………………………………..Page 9

Atrium……………….....…….………………………………..Page 9

Sixth Floor Roof Garden..…….………..…………………..Page 9

M.A.E. Focus: Daylighting…………..………………………..…...Page 10

Solution…………..…....…….…………………………………….....Page 10

Tasks and Tools…….....…….………………………………...……..Page 10

Electrical Depth………………..………...…………………………………..Page 11

Overview………..…....…….………………………………………...Page 11

Solution/Methods…...…….………………………………………...Page 11

Breadth One: Architectural………………..………...…………………….Page 13

Breadth Two: Structural…...………………..………...……………………..Page 14

Schedule……………………..………………..………...…………………….Page 15

12-15-2009 JENNA STAUFFER LIGHTING/ELECTRICAL CONNECTICUT SCIENCE CENTER HARTFORD, CONNECTICUT THESIS PROPOSAL

 

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E x e c u t i v e S u m m a r y

After close examination of the systems found in the Connecticut Science Center (CSC), it was evident that great consideration has gone into their design. This proposal suggests the redesign of certain existing systems. This by no means implies any shortcomings, but provides alternate ideas to be completed during the Spring 2010 semester. Contained within are explanations of two depth and breadth topics.

The lighting depth describes four new design concepts for the following spaces: private/open offices, theater, atrium, and sixth floor roof garden. The center works to promote the excitement and wonder of science, and the lighting design is intended to reflect that. Each of the spaces will exhibit dynamic qualities that are catalysts for intrigue. Criteria developed throughout the Fall 2009 semester will help guide the redesign.

For the electrical depth, each of the four spaces will have a redesign of their branch circuit distribution. A protective device coordination study will be performed along with short circuit analysis. Additionally, the photovoltaic array that is intended to be installed in the building will be examined. After budgetary constraints, it was put on hold. An in depth study will determine how beneficial this array will be, and based upon the findings, whether or not it should be implemented. Finally, because the building is to be a showcase of sustainability, other forms of sustainable generation will then be considered as possible additions or alternatives.

The two breadths will be architectural and structural. The architectural breadth will involve the redesign of the sixth floor roof garden. The proposed lighting design will tie into this. As this space is redesigned, the loads will increase. The structural breadth will size the new members needed to support the additional load. It will also make sure the new wall is able to withstand wind loads.

12-15-2009 JENNA STAUFFER LIGHTING/ELECTRICAL CONNECTICUT SCIENCE CENTER HARTFORD, CONNECTICUT THESIS PROPOSAL

 

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B a c k g r o u n d: C S C

The Connecticut Science Center is a 154,000 square foot building located in Hartford, CT. Its primary function as a science museum is to promote the excitement and wonder of science, as well as the state’s commitment to education and cultural enrichment. Construction began in January 2006, and the center officially opened in June of 2009.

The planned cost of the project was to be $150 million. Despite efforts by many of the consultants to perform value engineering, the final cost is estimated to be $10 million-$20 million over budget. To help keep costs at bay, the construction scope was bought in small packages. Therefore, some of the parts of the building are still not formally “bought” by the owner and cannot be added into the final project tally.

In an effort to revitalize the city of Hartford, the state of Connecticut embarked on an ambitious redevelopment proposal known as Adriaen’s Landing Economic Development Initiative. The Connecticut Science Center was commissioned as part of this development to engage visitors in various sciences, while simultaneously redefining the city’s skyline.

To do so, the designers combined three basic elements. The first is a parallelogram shaped south tower with dramatic, tilting walls. The second element, which is a northern tower, steps back on one side and cantilevers on the other. Finally, located between both towers, is the tall glass atrium topped with a signature roof. This S-shaped roof works to communicate the excitement of science in a dynamic way.

All visitors enter into this atrium space, referred to as the “Science Alley.” The 143’ tall space is crisscrossed with pedestrian bridges and is the center of circulation throughout the center. Level one offers a theater, gift shop, and café. Located in either tower are the exhibition spaces and offices. Views of the city and surrounding river are possible from strategically placed roof gardens, terraces, and glazing.

The following spaces are the four that the redesign will be focused upon:

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Second Floor Open/Private Office:

Theater:

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Atrium (“Science Alley”):

Sixth Floor Roof Garden:

Space Area (sq. ft.) Open Office 1,390 Private Office 195

Theater 3,165 Atrium 7,425

Sixth Floor Roof Garden 8,385

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L i g h t i n g D e p t h

O v e r v i e w

The lighting found in the Connecticut Science Center consists of various types of high efficacy fluorescent sources. In the atrium, metal halide fixtures help to supplement the atrium space when daylight is not sufficient. The multipurpose theater is an example of a space utilizing a variety of dimmable halogen lamps. These sources are used throughout the center for primary lighting, as well as decorative fixtures. To keep a cohesive feel throughout, a warm color temperature of 3000K is used.

The lighting controls in the center work to optimize a sustainable design. Where daylight can be harvested, photosensors are used. Timers can also be programmed for lights to be turned off during daylight hours. This is especially ideal for lighting found in outdoor spaces. Occupancy sensors are used to save energy in areas including, but not limited to, the private offices and restrooms.

L u t r o n C o m m e n t s:

Luke

- Roof Garden o For roof garden, place floorplan right after design criteria—fits

better in presentation o Good that walls were addressed o Walls/tree/uplighting could continue and carry on to build one

main scheme o Make the space feel more like a room o Play with walls, need something to change from corporate to

science feel o Consider that magic carpet roof can tie into this space o Potential with color to play with color changing roof

- Atrium requires additional thought in future of how each item will be maintained, magic carpet roof good idea

- Theater should have more scenes than just public vs. private, more than 2 functions in space

- Private Office luminaire could be even more dynamic

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Kari

- Theater was hard to sell “private” scene, it is a public space - Went from goal to solutions, put some concepts in the middle - Roof Garden is also used as gathering space for events, don’t want to

necessarily move them through - Lobby needs solutions, how do you get the desk to glow?

Leigh

- Always try to sell all concepts, don’t downplay the “boring” private office scene

- Private Office, consider a “magic carpet” themed luminaire - Theater needs more light in “public”, and less in “private” - Atrium “magic carpet” will be a challenge because both interior and

exterior - Roof Garden walls need a good concept like the final design scenario

S o l u t i o n

As a science museum, the goals of the building are to promote the excitement and wonder of science. The lighting design should enhance the center’s prevailing themes—lively and dynamic. Each of the four spaces will exhibit dynamic qualities that are catalysts for intrigue. Important features of the building should be emphasized by the lighting design.

Open Office/Private Office

The open office will promote a comfortable working environment while capturing the vivacity of the science center. Uniform, glare free lighting should be provided on the desks. The circulation path around the perimeter should be promoted with the help of a distinguishing luminaire type. Energy efficient lamps and ballasts are recommended.

The private office will continue the energy of the open office while maintaining a comfortable atmosphere. Indirect lighting will provide uniform, glare free lighting on the desks. It will also help to promote a feeling of spaciousness. The luminaire will reflect the dynamic theme by being custom shaped to echo the

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curve of the magic carpet roof. Each private office has a window looking into the atrium, so this luminaire will be visible to the public.

Theater

The theater is a dual purpose space. It is used for 3D movies, as well as public assembly. Inspired by various exhibits found in the CSC, the overall goal in this space is to promote science with vibrancy, excitement, and movement. The walls will be made to look like a time warp with the help of recessed fixtures. Scenes are important in this space, as different criteria are necessary for movies and assemblies.

Atrium

The atrium is a towering showpiece of the center, and due to its large amount of glazing, is visible from both inside and out. During the day, daylighting will provide a dynamic feel. At night, the soaring magic carpet roof should be accentuated. This can be done with colored light. This space is quite important for wayfinding—especially because ticketing, staircases, and elevators to exhibits are prominent. Each of these zones should be illuminated to promote circulation. Decorative fixtures and a glowing desk help to indicate ticketing. The series of criss-crossing bridges and staircases will be called to attention with uniform lighting from above, below, or handrails. Photosensors must be incorporated for proper daylight harvesting. A night lighting scene will showcase the roof and reduce the ambient light level.

Sixth Floor Roof Garden

The sixth floor roof garden will be modified in the architectural breadth of the second semester. Currently, there is no planting and the surrounding walls are very stark and alienating. This space is intended to be used for museum guests and for night events. The proposed lighting will create enthusiasm that draws people outdoors, while enhancing the new design of the garden. Taking ideas from each of the design concepts proposed in Technical Report Three, the redesigned walkway will be lined with recessed lights that echo the night sky. They will also serve as a clear delineation of the path and provide the proper illuminance levels. A solar powered, sculptural tree will provide a destination as

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well as ambient light. Landscaping will be illuminated to promote depth and shadow. The new walls, depending on the material chosen, can be uplit to create the illusion of towering trees.

M. A. E. F o c u s: D a y l i g h t i n g

The atrium space is primarily lit with daylight when possible. A daylight study and proper integration of photosensors for the new lighting design will be performed. This photosensor system, configuration, and layout will be determined. Additionally, a report on the annual savings will be produced.

S o l u t i o n M e t h o d

The next step in the lighting design is to take the proposed schematic designs and make them a reality. They will need to be further developed and analyzed. Details and documentation must also occur. The final documents will include lighting plans, calculations, and renderings.

T a s k s a n d T o o l s

The IESNA Handbook will provide a reference to design goals. If changes are made from this, proper rationalization must be explained.

AGI32 will prove a useful tool for calculations and renderings. The models of each space will be created in AutoCAD and then imported into AGI32. Power densities will be checked against ASHRAE/IESNA Standard 90.1.

12-15-2009 JENNA STAUFFER LIGHTING/ELECTRICAL CONNECTICUT SCIENCE CENTER HARTFORD, CONNECTICUT THESIS PROPOSAL

 

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E l e c t r i c a l D e p t h

O v e r v i e w

The Connecticut Science Center has a radial electrical system that enters the building through one service entrance point. This point is located at the transformer room on garage level one. The main transformer, which is provided by the utility, is located within this room and has a secondary voltage of 480Y/277V, 3P, 4W. The 3000A main distribution panel supplies power to subsequent feeders and panels. In the future, photovoltaic panels and a fuel cell are intended to be installed for supplemental power. The necessary connections and wirings are already incorporated. Emergency power is provided by a 900kW/1125kVA generator.

S o l u t i o n/ M e t h o d s

1. Branch Circuit Distribution

The four spaces that will be redesigned are the open/private office, theater, atrium, and sixth floor roof garden. New lighting designs are proposed, and therefore new branch circuit distribution must be created. Panel boards, feeders, and electrical equipment will need modified.

2. Protective Device Coordination Study and Short Circuit Analysis

A protective device coordination study that addresses a single-path through the distribution system will be performed. The coordination of the protective devices for the redesigned system components along this path will need to be shown. This path will be from the utility to the main switchboard and into a panel board. Short circuit calculations will be included as well as trip curves for each device.

3. Examine Advantages of Changing Photovoltaic Array

A photovoltaic array was intended to be implemented in the CSC. However, value engineering has placed its installation on hold. The system is already wired for the installation; but, the panels have not yet been purchased. An in depth study will determine how beneficial this array could be. This can be performed

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from both an energy and economic perspective. The facility is not perfectly suited for photovoltaics—as it is located in downtown Hartford. Buildings surround the CSC, and there are quite a few cloudy days.

4. Examine Advantages of Changing Fuel Cell

Like the photovoltaic array, a thorough examination of the CSC’s fuel cell will also be performed. It has not yet been installed due to value engineering. Potential alternatives may be recommended if they are found to be more beneficial.

12-15-2009 JENNA STAUFFER LIGHTING/ELECTRICAL CONNECTICUT SCIENCE CENTER HARTFORD, CONNECTICUT THESIS PROPOSAL

 

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B r e a d t h O n e: A r c h i t e c t u r a l

Currently, the sixth floor roof garden is a space surrounded by walls that are not aesthetically pleasing. In order to make the space more inviting, and improve upon the lighting design, the garden surroundings will be redesigned. This includes changing the wall materials, path locations, and vegetation planting plans. These modifications will give the space a more exciting feel, and hopefully promote the use of the space. To adhere with the LEED rating of the facility, sustainable methods should be employed.

12-15-2009 JENNA STAUFFER LIGHTING/ELECTRICAL CONNECTICUT SCIENCE CENTER HARTFORD, CONNECTICUT THESIS PROPOSAL

 

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B r e a d t h T w o: S t r u c t u r a l

The sixth floor roof garden will be undergoing total architectural redesign. As this space is improved upon, the loads from walls, plantings, pathways, and other aspects will greatly increase. The members that support the garden will be redesigned to sufficiently carry this additional load. The new wall will also be tested to verify it can withstand wind loads.

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S c h e d u l e

Spring 2010 Timeline Week Focus Activity BREAK Architectural Redesign Roof Garden

1/11/2009 Lighting Finish Schematics/3D Modeling 1/18/2009 Lighting Clean up Models/Bring into AGI 1/25/2009 Lighting Fixture Selection/Layouts (AGI)

2/1/2009 Electrical Research alternative sustainable generators/PV analysis Lighting Daylight Study of Atrium

2/8/2009 Structural Load Calculations

2/15/2009 Lighting Theater Calculations Structural Finish up structural breadth

2/22/2009 Electrical PV analysis

3/1/2009 Lighting Roof Garden Calculations Electrical Finish alternative sustainable technology

3/8/2009 SPRING BREAK! 3/15/2009 Lighting Atrium/Open Office Calculations

3/22/2009 Lighting Renderings Electrical Branch Circuit Distribution

3/29/2009 Electrical Branch Circuit/Protective Device Lighting Renderings/Documentation

4/5/2009 All Final Documentation/Complete Report/Powerpoint 4/12/2009 All Jury Presentation

GRADUATION!