case study #1 a daylight room - university of idaho of fame/arch464...3/2/2010 1 a daylight room...

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A DAYLIGHT ROOM

McConnell Hall Lounge Arch 464Jared Casto

Greg Kirk

CASE STUDY #1

LOCATION McConnell Hall Lounge1Moscow, Idaho

Coordinates:North 46.730030°West 117.014680°

Elevation:2556 ft msl

McConnell Hall is oriented north south on the north side of campus and houses upperclassman and transfer students. The day lit lounge under analysis protrudes from the southwest corner on the first floor of the building with daylight apertures on the north and south sides of the room and an additional skylight.

Size: 32 ft x 25 ft800 ft2

BUILDING DESCRIPTION

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2 CLIMATE DATA McConnell Hall Lounge

Moscow Area Sky Conditions Chart

BUILDING DESCRIPTION

0

5

10

15

20

25

30

35

DEC

EMBE

RN

OV

EMBE

RO

CTO

BER

SEPT

EMBE

RAU

GU

STJU

LYJU

NE

MAY

APR

ILM

ARC

HFE

BRU

ARY

JAN

UA

RY

OVERCASTPARTLY CLOUDYCLEAR

Sky Illumination DataSeasonal averages:

Spring – 1550 FCLSummer – 2520 FCLFall – 1550 FCLWinter – 730 FCL

BUILDING PERFORMANCE ANALYSIS3 LOUNGE PLANS & SECTIONS McConnell Hall Lounge

North/South Section:Southern Glass Block & 1’-0” Ceiling Soffit

SKYLIGHT ABOVE

East/West Section:Northern Glazing & Skylight

N

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BUILDING PERFORMANCE ANALYSIS4 OVERCAST LIGHT DITRIBUTION McConnell Hall Lounge

AGi32 OVERCAST IMAGE

* PHOTO TAKEN ON 14FEB2010 AT 1500 LOCAL TIME

As shown in the actual and AGi32 images, the current space is adequately day lighted in overcast conditions but improvements can be made.

ACTUAL OVERCAST PHOTO

* RENDER REPRESENTING 15FEB2010 AT 1500 LOCAL TIME

N

BUILDING PERFORMANCE ANALYSIS5 SUNNY LIGHT DISTRIBUTION McConnell Hall Lounge

AGi32 SUNNY IMAGE


ACTUAL SUNNY PHOTO

As shown in the actual and AGi32 images, the current space is adequately day lighted in sunny conditions but improvements can be made.

* RENDER REPRESENTING 15FEB2010 AT 1500 LOCAL TIME

N

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BUILDING PERFORMANCE ANALYSIS6 GLARE ANALYSIS McConnell Hall Lounge



Glare is not distracting enough to impede work in either instance during daylight hours, however the headlight glare from automobiles during hours of darkness is distracting and needs to be corrected.

SUNNY

CONDITIONS

7 ELECTRIC LIGHT INVENTORY McConnell Hall Lounge

BUILDING PERFORMANCE ANALYSIS

DESCRIPTION TYPE MODEL WATTS VOLTS

Perimeter track lights

Incandescent Hytron KX 15

65W 120V

Recessed lights Incandescent Sylvania (flood) x 4

65W 130V

Skylight track lights

Incandescent Hytron KX 6

65W 120V

ILLUMINANCE METER READINGS*sunny day @ 1500 local time *readings in footcandles

• Average DF = 3.5%

• Average illuminance with lights off = 48.07 FC

• Average illuminance with lights on = 57.12 FC


* Each light track is operated on its own dimmer switch

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BUILDING REDESIGN83

PROPOSALS McConnell Hall Lounge

PROBLEM SOLUTION1. Incandescent lights are currently being used in

conjunction with day lighting to illuminate the room.

1. All incandescent bulbs will be replaced with dimming fluorescent lights.

2. Currently the east wall of the room is painted a light blue and is topped at 9 feet with a metal handrail that borders an above study space. The skylight projects onto this east wall.

2. The east wall will be painted white, and the metal handrail will be faced with an translucent glass panel to better reflect natural light into the darkest portion of the lounge.

3. The glass block wall on the south wall of the room admits much needed, yet controlled light during the day. At night however, the glass block allows vehicle headlights fromthe busy intersection outside to enter thelounge, creating distracting glare issues.

3. The glass block wall will have a simple curtain rod with accompanying adjustable curtains installed above it. This will allow the curtains to be closed during the evenings to block unwanted headlight glare.

4. Too soft Northern light coming in through thewindows on that side, quickly darkens thespace nearest to them.

4. Add a reflective exterior wall above the windowsheight to send light more directly into the space.

BUILDING REDESIGN9 PRODUCT SPECS McConnell Hall Lounge

8 WATT R20 DIMMABLE CCFL/50K SPECTRA BRITE COLD CATHODE COMPACT FLUORESCENT BULB$16.99 (x25)

CRL GLASS DECORATIVE FILM 48" x 96" FROSTED WHITE PATTERN$89.90 (x2)

BLACKOUT TEXTURED THERMAL INSULATED TAB TOP CURTAIN PAIR 84'' x 84'‘ – Navy$49.99

4’-0”x31’-0” ADDITION ON NORTHERN WALL TO BE 2”x4” FRAMING. COST WILL VARY PER LOCAL CONSTRUCTION RATES

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BUILDING REDESIGN PERFORMANCE ANALYSIS103

NEWAGi32 PLAN

SUNNYWith luminance meter grid overlay

COMPARATIVE CLEAR LIGHT DITRIBUTION McConnell Hall Lounge

-Light Blocking Curtain System

- 4’ Reflectance Wall at 6’-6” from the ground

- Translucent glazed handrail with white paint below

N

OVERCAST CLEAR REVISION


COMPARATIVE LIGHT DITRIBUTION McConnell Hall Lounge

N

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ENERGY SAVINGS McConnell Hall Lounge

DAYLIGHTING ENERGY SAVINGS

Due to the fact that the space is already well day lighted, the improvements of repainting the east wall white and adding a translucent glass panel to the handrail had no effect on energy savings. This is only because the current space utilizes no electric lighting during the day. The lounge will be noticeably brighter because of these changes though.

ELECTRIC LIGHTING ENERGY SAVINGS

Electric lighting is only required during hours of darkness and not during the day. Therefore, significant energy savings can be seen by replacing the existing incandescent light bulbs with dimming fluorescents.

CONCLUSION13 McConnell Hall Lounge

The overall lighting strategies currently employed in this space are quite successful. The daylight levels do not require use of electric lighting during clear or overcast conditions. When lighting is used, zones and dimming options are available. With the majority of glazing on the Northern side and the diffuse thick block on the Southern control majority of glare and temperature spikes. Therefore, the revisions suggested only address minor specific case concerns, and help make the space comfortable for a wider variety of occupancy.

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QUESTIONS?

case study #1 a daylight room - university of idaho of fame/arch464...3/2/2010 1 a daylight room...

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