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CASE STUDY #1:

A DAYLIGHTED ROOMBUHLER . FINNEY . GARCIA ARCH 464

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building overview.

AAID Building:

Art & Architecture Interior Design Building

Building orientation-square w/ cardinal directions

This building is currently housing the senior and junior interior design studios. The room analyzed is the upper floor, the Senior Design Studio.

Studio Area: 1170 ft2

Glazing Area: 223 ft2

Main entry- East Facade

AAID Building

Idaho Commons & TLC

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climate charts

Information regarding available illumination and sky conditions of the Moscow area (based on 2008 data)

0 5 10 15 20 25 30 35

January

February

March

April

May

June

July

August

September

October

November

December

Number of Days

Months

Clear Partly Cloudy Overcast

For 46.7N latitude, charts below demonstrate cloudy sky illuminance data:

Winter- 730 FCLSpring- 1550 FCLSummer- 2520 FCLFall- 1550 FCL

Winter

Summer

Spring

Fall

current light distributionSingle-pane double-hung window

Many are unable to open and out of those that do, most do not have screens to prevent insect population in the studio.

None have shading devices besides some existing foliage

EXISTING

WIN

DOW

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current light distributionLuminance meter readings at various times of the day with overcast sky conditions.

@ 9:30am @ 1:30pm

FEB. MORNING: 9.7 DFFEB. MIDDAY: 53.4 DF

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Based on average f.c readings of 11.4 for 9:30am and 62.5 for 1:30pm

current light distribution

GDDM Rendering expressing light spread coming through the windows.

Based on daylight foot candle readings from a February day around midday (1:30pm).

Sunlight is inhibited by the adjacent AA building to the South & foliage.

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current light distributionCalculations for existing electrical fixtures.

32’ x 54’ Space = 1728 sq. ft.Actual Space Analysis = 1170 sq. ft.FC Recommendations = 50 f.c.# fixtures = 50 f.c. x 1170sq. Ft./whatever2(7.5 x 36.5’) + 2(7.5 x 32’) = 547.5 + 480 = 1027.5sq. ft.RCR= 2.5(1027.5 sq.ft.)/1170 sq. ft. = 2.1955CU = 0.8

Fluorescent Warm Light Bulbs at 40% life = 2,815 lumens# of fixtures = 50 f.c. x 1170 sq. ft./(.7)(2 lamps)(2815 lumens) = 58,500/349158,500/3491 = 16.7 fixtures needed

Currently there are 19 fixtures in the space.

Only need 16 fixtures in the space for adequate lighting.

Two- Lamp Prismatic Wraparound Luminaire: semi-direct fluorescent

12%

88%

Lighting spread percentage

Existing reflected ceiling plan

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existing glare analysis

From our analysis, it is clear that the highest levels of glare occur on the lightest and most reflective surfaces, including the desk surfaces, laptop screens, shiny book covers, and other miscellaneous desk accessories. Low points of glare include the more absorbent surfaces including the carpeted floor and paper board display partitions.

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REDESIGNSection perspective showing an application of the solatubes in a similarly pitched roof to the AAID building. (MEEB pg. 589 Fig. a)

Example of an application of proposed light shelves and new glazing scheme to eliminate glare on surfaces and work areas as well as force more daylight deeper into the room and ceiling. (continuingeducation.construction.com)

design com

ponents proposed

redesign: adding skylightsThe Sola-tubes will catch the Southern sun that may not otherwise be able to reach the building and penetrate the studio space. Really the only times the direct sun impacts the studio is between spring and fall solstice or when the sun is coming from the SW direction in order to be able to get around the adjacent neighboring AA building.

Raybender® 3000 TechnologyPatented daylight-capturing dome lens Redirects low-angle sunlight Rejects overpowering summer midday sunlight Consistent daylighting throughout the dayLightTracker™ ReflectorPatented in-dome reflector Redirects low-angle winter sunlight Increases light input for increased light output Unsurpassed year-round performanceSpectralight® InfinityWorld's most reflective tubing 99.7% spectral reflectivity Purest color rendition possible Transfers sunlight a phenomenal 30 ft / 9 mEngineered Light DiffusionBlocks UV transmitionOptical lenses deliver superior diffusion Designed for visual comfort

Available locally through

the Natural Abode.

redesign: sectionsSection demonstrating new design components and ventilation benefits of the new design.

Sections demonstrating interior & exterior applications of the light shelf (Upper: Green Studio Handbook pg. 81)

Existing Window section

Proposed Redesign redesign: GDDM

GDDM comparisionbetween existing daylighting conditions and the proposed redesign conditions-based off foot candle readings from a Februaryday at midday (1:30pm).

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redesign: daylightingAnalysis of daylighting

EXISTING

Analysis taken with settings at 3:00pm in Feb.

PROPOSED REDESIGN

redesign: daylighting

EXISTING

Analysis taken with settings at 3:00pm in June

PROPOSED REDESIGN

redesign: daylightingAnalysis of daylighting

EXISTING

Analysis taken with settings at 3:00pm in Oct.

PROPOSED REDESIGN

redesign: electrical lighting

Existing and proposed redesign reflected ceiling plans.

19 fixtures now 16!

EXISTING

PROPOSED REDESIGN

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Existing ConditionsWindow Area Above Work Plane: 221sfAnnual Energy Savings Due to Daylighting: 54.2%New DesignWindow Area Above Work Plane: 272sf Skylight Area: 51sfAnnual Energy Savings Due to

Daylighting: 62.4%

Electricity Cost: $.08/k WhExisting ConditionsWindow Area Above Work Plane: 221sfAnnual Energy Savings Due to Daylighting: 54.2%New DesignWindow Area Above Work Plane: 272sf Skylight Area: 51sfAnnual Energy Savings Due to Daylighting: 62.4%

General Info:Daily Occupancy: 8:00am-4:00pmLighting Control Type: On/OffCeiling Height: 11ftAnnual Hours of Occupancy: 1800hrs Electricity Cost: $.08/k Wh

conclusion

EXISTING: taken FEB. @ 1:30pm

REDESIGN: taken FEB. @

3:00pm

Previously having readings of 2 f.c. - 4 f.c., the darker areas in the studio space can now be lit over

10x the f.c. as before.

YAY FOR SAVINGS!!

QUESTIONS??BUHLER . FINNEY . GARCIA ARCH 464