Tuesday, December 11, 2012
Sketch Series 5: Acoustic Analysis for Gatewood Building
Acoustical data was collected while class was not in session, but some students were in the area working. All units are in decibels (dB).
The studio’s geometry determines the path the sound waves travel from the originated source, the buildings occupants, reverberate along the smooth surface of the concrete floor, ceiling and walls. The glass around the perimeter of the building resonates absorbing significant amounts of low frequencies, but reflects the high frequencies back into the space. Some of the sound is absorbed by the wood surfaces. Some sound attenuates as it spreads without interruption. In a reverberant field sound waves are multiplied and interwoven.
Control of unwanted sound reflection by changing acoustical energy into heat energy absorbed within the room’s contents, wall structure, and materials surfaces. The content of the space controls the noise levels in the space while the building structure controls the transmission of the noise between the spaces. In the library where there is plush carpeting, many books, and furnishings the sound is absorbed within the room’s boundaries. The concrete cavities in the ceiling help to dissipate some of the sound waves and prevent them from travelling outside the room’s boundaries. The studio spaces with their high ceilings and sparse furnishing have none of these controls so the sound is amplified. Adding absorptive materials to a room changes the reverberating characteristics. As the studio spaces fill up with student’s materials and projects the sound transmission is reduced. The graduate offices of the art students have building materials and furnishings to reduce the sound attenuation.
Wednesday, October 31, 2012
Shading for Visual Comfort
Daylight availability for visual comfort is optimized through the angled surface apertures of the shading device. The surface configuration captures the daylight and reflects the diffused light into the interior space. The path of the sun in the Northern Hemisphere of 36 degrees latitude is at the height f solar gain at 4pm during the Summer Solstice with the solar azimuth 52 degrees and the maximum solar altitude 30 degrees. Based on the path of the sun, we rotated the angles surface apertures 52 degrees to permit more light into the space during the winter months that summer.
Inspiration for the shade was influenced by eastern architecture from a culture whose patterns of design were based on the studying the transitional phases of the sun. The transition in the design of the shade from positive to negative openings follows this philosophy of controlling the access of the desirable qualities of light to enter the interior space.
Monday, October 29, 2012
Light Series 4
Semi-Direct Downlight Indirect Uplight Lighting Conditions
Wall Grazing
Cove lighting, wall washing and task lighting
Slot and accent Lighting
Saturday, October 20, 2012
Sound Experiences
I was raised in a California
ranch with high ceilings. When I was
younger, the floor covering was vinyl with few household furnishings. I can recall the house echoing. My brother and I use to yell across from one
end of the house to each other, just to hear acoustics of the space. As I grew, so did the furnishings in our
home. The apex of the house was about
20 feet high, where my father built a library wall filled with books. The vinyl floor was replaced with thick
carpeting. Lots of furnishing filled
the walls and spaces in every room. Our
home became cozier and quieter.
I use to go to church with my
family in a very Old Catholic Church building with a transept, nave and high
ceilings. The priest would step into
the nave to give his sermons to the congregation. His voice would carry to the back row of the
church without microphone assistance.
The Italian priest was a very good public speaker annunciating every
syllable in a rhythmic tone to reverberate alone the hard surfaces towards the
rear of the church.
Many years later as the
congregation grew; the Church built a large auditorium below the school as an
annexation to hold larger groups for their sermons. To enter the auditorium, you would need to
walk one flight down, but daylight would still enter into the space from
windows located high up on the walls.
It was a very large rectangular space with a flat ceiling. A sound system was required for the space in
order to be heard clearly. Sound did
not travel well in the space, but it was still a noisy space.
When I recall the Old Italian
priest with his sympathetic note; I remember he only gave his sermons in the
old church. Sometimes his sermons were
in Latin, with a musical and religious tone modulating at a perfect pitch
throughout the space. When looking for
which sermon to attend on Sundays, my siblings and I would always request to
attend the mass in the church. At the
time, I thought it was the visual experience of the environment with their
beautiful stain glass windows, carved moldings and décor that inspired our
choice; but now I realize that we made a subconscious decision of preference, because it was the acoustical experience within the church that added to our enjoyment
of the space.
As a young student, I recall
a fellow male student who was an excellent whistler. On one occasion during our math class, we all
stopped to listen to him whistling from one end of the empty hall corridor
down to the other the tune “Andy Griffith of Mayberry.” It was a great whistling
tone that reverberated wonderfully down the hard surfaces of the corridor to
our attentive ears; a very pleasant memory of math class that I recall fondly
today because to the auditory enjoyment of that experience.
When I was younger, I use to
take guitar lessons. I was never a very
good guitar player, but I enjoyed listening to the reverberating sound from
the strumming of the strings on my Old Spanish guitar. The guitar was small with a wooden frame and
metal strings of different thicknesses. I still possess this guitar in my mother’s
home, kept tucked away neatly in its case.
Occasionally, when I go home to mom’s house, I pull out of my closet
that old guitar, just to listen to its beautiful tone once again, and I’m
instantly transported back to my youth.
I smile, cause the sound just washes away the years.
Friday, October 5, 2012
Light Model
Light Model Project
Team members
Shahrzad Sabzehar, Majedeh Modarres, Ayten Nadeau, and Eileen CarrollConcept
Spectrum of Shadow Forms
Humans see objects through reflections of light from surfaces of forms. Shadows are partial obscurities of light casting exaggerations of the form in space. Our light light model depicts architecture form to focus the reflections of light into a sculptured spectrum of shadow forms to energized the space with playful delight and uniqueness of character.
Poster
Model
The angular form supports the exaggeration shadows with a colorful spectrum of light from the three primary light colors, red, green, and blue. Blue and red light together creates magenta. Red and green light creates yellow. Green and blue light creates cyan.
Thursday, October 4, 2012
Light Sketch Series 2
The Weatherspoon Gallery is one of my favorite interior spaces. The combination of volume with architecture details highlighted with quality layers of lighting, compliment the space into a harmonious balance of uniqueness. The use of daylight interacting with volume captures the viewers interest immediately upon entering the space. The halogen lights supports the daylight atmosphere of stars as the architecture separates shadow from light. The culminated result is an effective use of lighting to display fine artwork, while enhancing the museum experience.
The Pet Store Plus on High Point Rd in Greensboro is a very good example of quality linear fluorescent lighting in a commercial retail space. Even though, the field of the store has only one layer of lighting by the fluorescent bulbs, it is evenly uniform throughout the store, and effectively used for display of merchandise. This strong luminance feature of the space invites the patron to linger as they ponder their selections.
Wednesday, October 3, 2012
Light Experiences
Source: http://www.galinsky.com/buildings/hermes/index.htm
Light and Place
Light plays a dominant role in
our daily lives enhancing the quality of our experiences; it provides light as
well as contentment. Living on the east
coast in a temperate climate, we enjoy an abundance of sunshine brightening our
spirits and promoting outdoor activities in our daily lives. As I rise to greet the day, my mood is mostly
cheerful, as I look forward to the brightness of the sun. This was not always the case, for a brief
period of time; I lived in Portland, Oregon where my experiencers with light
were dramatically different. I was lucky
to see the sun one day out of a month. When that day occurred, I would wake up cheerier,
rush to my balcony window to view the glory of Mt Hood in the distant
horizon. A beautiful canvas scene of
light purple hue floating along the hazy atmosphere sky always accompanied the
white peaks of Mt Hood. Unfortunately,
in Portland the normal daylight conditions were predominately dull and
uninspiring, as my rise for the day often required additional lighting
accommodations.
Light and Nature
Glistening and filtering are the first words that come to
mind when I think of light and nature.
Raised on an island close to the water, I was memorized by the
reflections of light upon the water’s surface.
At optimum moments of the day, the water takes on a glisten quality that
captures the mind and promotes gazing in contented silence by its beauty.
I enjoy walks through the woods, watching the light
interacts playfully as it filters through the canopy of trees. The quality of
light is enhanced by the presence of nature.
Light takes a supporting role highlighting the unique qualities of the
natural environment.
Light
and Climate
Everyone is drawn to the
warmth of the sun. Turning our cheeks
towards the sun, we momentarily close our eyes to soak up a few rays of sunshine.
We feel energized. We love to vacation in warm climates, and get
sunburned in the process. The strength
of the sun makes us consider the needs of protection from sunscreen to
architectural qualities of roof overhangs and window treatments for shading.
Light and Time
Humans in essence are tuned to nature. Our biological clocks awaken us in the daylight,
and wind us down towards the night. My
internal clock starts opening my eyes at 7 and dozing me off around 11, but as
winter draws near my timeline shifts gradually.
I want to go to bed earlier. I
hate coming home from work in the dark.
I enjoy leaving my workplace when its still light outside. I think its human nature to want to be safe and
secure in your natural habitat, protected from unforeseen elements of the
night. Daylight savings time has
distorted the winter months into a prolonged dreariness of longing for seasonal
change.
Light
and Task
Working on drawings all my
adult life has always made me keenly aware of the needs of task lighting to
illuminate my working surface. As I’ve
aged I need additional sources of ambient lighting accompanied with a focused
task light source. Florescent lights
usually bother my eyes, whereas incandescent lights are usually more
soothing. The new eco-lights of a florescent
wound up like a bulb shape promotes headaches.
The ceiling fan in my bedroom is accompanied with an LED blue hue light
that provides little illumination for any task including walking.
Thursday, August 30, 2012
Impact of Light on Human Health and Welfare
Modern life has created a multitude of advantages that were
not possible for a pre-industrialized nation.
Yet with all its comforts and technological advancements, none has had a
more profound effect upon humans as our simulated environments with sources of
light.
During the 1960s and 1970s, a forward thinking professor
from Kent State University, John Flynn hypothesized the psychological effects
of artificial light on humans. In Flynn’s
research, he proposed resolutions to improve the quality of light for our
“spatial Illumination.”
As research continued into the study of light upon humans,
notable ailments have been attributed to the lack of natural light. Seasonal Affective Disorder (SAD) is common
in humans who live in climates where prolong periods of daylight is
absent. A notable difference in
depression, as well as a deficiency of vitamin D is linked with the lack of exposure
to daylight. This same effect is
identified in shift workers, whose exposure to natural
light is limited.
In 2001 ganglion, a new eye cell receptor was identified as
a sensor to slight changing patterns of light upon humans by signaling the
nervous system. This response signals
the human brains with changes to the body’s circadian rhythms. The resulting effect causes an impact upon
our emotional state of mind as well as our vital organs, and immune
systems.
A serious impact to our cardiac system invokes changes in
patterns of heart rate variability (HRV).
These variations in heart rate can increase our stress levels and
ultimately shorten our life expectancies.
Continued research is needed to fully understand the effects
the absences of natural light has upon the human body, but enough evidence has
concluded that we as designers must recognized the impact of light on human
health and welfare when we analyze our building lighting systems.
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