Rosie Sejung Chae
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Rosie
Sejung Chae
MS Engineering, SEMM
e-mail:
busyrosy@uclink4.berkeley.edu
Click the titles in the left column to view the handouts.
Contents
(Click for quick access):
1. Warm Up Exercise
2. Proof of Concept
3. Daylight Qualities
4. Two Hour Model
5. Source Qualities
6. Lighting Log
7. Windows by Decade
8. Dynamic Effects
9. Web Presentation
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Group Members: Gwelen, Eddie, and myself
Part1:Interior
Sketch
This exercise caught me by surprise. Here's my best attempt. I started by marking the hypothetical lightest and darkest area, then filling in the in-between spaces.
Part2:
Constructing a sketch model
The
three of us worked past the 2-hour suggested time limit. We took over the
Wurster 2nd floor work room to build the chapel. For the white
surface, we used high quality matte bristol paper.
right: Gwelen seals light leaks
Part3:
The model's tale
In
three sessions, Eddie, Gwelen, and I took the model around
ten different sites around the campus to observe how different lighting
conditions affect the chapel's interior. Our expectations for this project
were that we will get light coming in from different angles in various
gradients, with occasional hues and tints. Only when the photos were
developed and we were able to juxtapose the ten images together, we
realized that there were much more variations to
daylight.
Click here to see what we've found (this will open a new
page).
above: test shot of chapel interior under fluorescent lights.
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Group
Members: Gwelen, Eddie, and myself
right*: three giants peep through HFA20 window (this is Gwelen's version
of Cris's photo)
Phase 1: Model Making
The
most challenging portion of this project was to find materials that will
sufficiently represent the real building material given constraints due to
budget and availability (although we were pretty liberal on the former
constraint). Often, this meant obtaining several candidates for a
building material, then bringing them over to HFA20 to compare under the
real environment. As a result, HFA20 became our workroom during
weekends, and all our decisions were made in the room.
There were few inventive construction techniques during the building
process, such as: 
vertical
level bars to suspended objects from ceiling at the right height,
detachable walls and building parts that are put together like a puzzle
(for flexibility during later model modifications), and a coat of
eraser mark on surfaces for effects of making the gloss more dull.
Little did we realize what modeling a 23'X41' building (and 20'+ ceiling
height) meant. Our model turned out to be one of the largest I've
ever made, although the size did allow maneuvering objects through tiny
holes bearable.
left,
above*: vertical level bars were used to keep the suspended objects at a
desired height before gluing them.
right, above: Eddie cuts away pieces for the model.
Phase 1: Measurements
We
weren't too confident about the results we got from our
measurements. I guess variable sky conditions could be to blame (or
just be an excuse for us to blame). The overall average error was
not too high, although there were few spikes in our reading that could
potentially raise questions.
Click HERE** to view the slide
show (this will open a new window).
above*: illuminance readings fluctuated several times each minute due to
cloudy and moderately windy weather.
Phase 2: Modification 1
Rather timid about making drastic changes to the model
we have created (the attachment was pretty deep), modest improvements were implemented. We installed
overhangs on the South and West wall glazing. In an attempt to bring
light farther into the room, we placed a light shelf under the
clerestory. The results were slight, although noticeable.
Click HERE to view our photo comparisons (this will open a new window).
Phase 2: Modification 2
Our
group finally got the courage to rip our model apart (or rather, made
full use of the detachable walls and parts that we cleverly
installed). We sat down brainstorming our improvement for a number
of sessions. After successfully testing a 20 minute 1/4" scale
model (a model to a model?) under a 100-watt desk lamp, we went on to
modifying our miniature HFA20. 
Quick calculations were made to ensure that the new openings will not beam
direct sunlight on/around eye level or on the chalkboard during periods
of high activity in the classroom. The
interior quality of the model was adjusted as it was set up next to the
real HFA20 for another set of interior shots.
Click HERE
* to view the slide show (this will open a new window).
left, top*: our baby model to the "real" model
right, top*: detaching South wall
*Photographs
courtesy of Gwelen Paliaga (and his cool new digital camera)
**Presentation
courtesy of Gwelen Paliaga
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Thirty-somewhat qualities of daylight were captured. There were also at least a several dozen other moments when I found better image potentials after the project was due (darn!).
above: some images didn't quite make it to the final selection.
Click HERE to see the main page (this will open a new window).
Two-Hour Model Exercise
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Click
HERE to view the graphs
(this will open a new window).
You can also DOWNLOAD the excel file (right click,
then select "save target as...")
right: 13 models were produced.
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This
project ran efficiently due to the compactness of the equipment
involved. The shoebox often doubled as the camera box, and the box
top proved to be an adequate desktop for field notes.
Click HERE to see the main page (this will open a new window).
Lighting Log
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I may have accidentally recalibrated the luminance meter while I was trying to figure out how it works. The relative luminance values should not be affected, however, since all the readings were taken after I realized what I was doing. Click HERE to view the chart (this will open a new window). Just a little note on the side, the $20 Phillips energy efficient bulbs produce twice the lumens than the cheap $4 IKEA bulbs using about the same wattage. This was previously suspected, as evidenced by the higher frequency waves (bluer light) that Phillips bulbs produced.
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A
minor challenge in this project was to figure out to which decade a
retrofitted building belonged to. A building can transform over time,
and may cease to capture the essence of the decade that it was originally
constructed in.
Also, it was interesting to see that although the buildings' interiors seem
to vary in extreme degrees, most people in the buildings (or at least the
ones I talked to) were content in their environment. I guess this
confirms that no matter how much we complain about them, we still have
decent buildings on our campus. Click HERE
to view the photos (this will open a new window).
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Here's
my initial flip-book attempt. Frankly, I am not too familiar with digital
video making. To sort the images together, I used the free movie maker software that came with my
computer (it also has a cheesy name: Windows Movie Maker). The clip
is a .WMV file, and you can access it by clicking HERE.
I
sat out facing the Wurster atrium from early afternoon until sunset on a
partly cloudy day. It turned out that I had around 250 different
things to grade that day, so I busied myself with work between photo
shots. My equipment supply was limited which might be
painfully obvious. Ah well, at least I tried.
right: Wurster atrium
Web Presentation
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Click HERE to see the page that summarizes this course.
