mica: brown center keenan dae omalley · 2004-04-12 · keenan dae omalley lighting/electrical...

MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

AUDITORIUM LOBBY

The auditorium lobby is an interesting space because of its configuration. It spans two stories, the basement level through the entry level. A massive concrete staircase leads down from the entry level to the main level of the lobby. A balcony hangs over the lower level, creating a unique viewing platform. This balcony is bordered with a delicate glass railing that continues down the staircase. The glass partition provides the necessary division without distracting from the concrete’s bold form. The auditorium occupies the majority of the space of the Brown Center’s lowest level. The remaining space is dedicated to holding the mechanical and electrical equipment. Therefore, people will only be on this level to access the auditorium. It is not a high traffic area, rather a lounge for meeting and conversing with others. The single function of this space is to provide a gathering spot for people before and after performances and lectures at the Hall.

Senior Thesis - Spring 2004 31

MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

LOBBY FLOOR PLANS


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

LOBBY SECTIONS


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

LOCATION

AUDITORIUM LEVEL • Open to entry level, two

stories • North: Elevator and

restrooms • West: Mechanical and

electrical rooms • South: Auditorium

ENTRY LEVEL

• 3’ glass partition separating corridor from lower lobby

• Staircase leads down to lobby NORTH

NORTH

Restrooms

Electrical Room Mechanical Room

Elevator Lobby

Entrance

Down to Lobby

Senior Thesis - Spring 2004

AUDITORIUM LEVEL

• Open to entry level, two stories

• North: Elevator and restrooms

• West: Mechanical and electrical rooms

• South: Auditorium

34

MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

FEATURES Proceeding straight though the atrium from the entrance, leads to a hallway – to the right are two sets of doors to access the balcony level of the auditorium, to the left is a 3 foot glass wall, open to the lobby below. With the exception of this partition and the upper half of the east wall, all surfaces is this space are concrete. Because the lobby spans the basement level through the entry level, half of the space is below grade. The upper half of the east wall is the glass curtain wall.

(IESNA, 9th Edition, Figure 1-36, page 1-22)

DESIGN CRITERIA

SPACE CRITERIA

• Uses/Activities: Gathering spot before and after performances • Power Density: 1.0W/ft2 • Appearance of Space and Luminaires*: Use light to grab visitors’ attention as they enter

the building then draw them down the staircase • Color Appearance: Use lamps with a CRI greater than 80 for a pleasant appearance of

skin tones • Light distribution on Surfaces: Apply an even distribution of light on the staircase to

avoid confusing shadows • Modeling of Faces and Objects: Use both direct and diffuse light to improve facial

modeling * Indicates a very important design consideration

ILLUMINANCE CRITERIA

• Theater Lobby: Horizontal Illuminace = 10 fc, Vertical Illuminance = 3 fc

SURFACE REFLECTANCE SURFACE MATERIAL REFLECTANCE

Ceiling Exposed concrete structure 35% Walls (N, W, S) Concrete 35% Walls (E) Glass Curtain Wall 39% Floor Sealed Concrete 35% Staircase Sealed Concrete 35% 3’ Partition Wall Silica Glass 95%


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

DESIGN GOALS The qualities that make the Brown Center unique are also the qualities that threaten to make it mundane. All surfaces are concrete, broken up only by the glass curtain wall. The space has no focal point; the eye travels aimlessly from concrete surface to surface. The entrance of this building, the atrium, is a glorious space. An equally exciting space needs to be created for the auditorium lobby. The two areas are separated in such a way that neither design would intrude on the other.

Grab attention – After entering the Brown Center, a visitor will stand admiring the soaring 60 foot atrium. An equally dramatic design should be used to draw people from the entrance without threatening the prominence of the atrium.

Emphasize the staircase - Since the auditorium will be holding performances

open to the public, many of the people entering the Brown Center will unfamiliar with the location of the auditorium. The lighting design should lead people from the entrance down to the auditorium lobby.

Set the mood – This lobby will hold people before, during and after

performances. It should create an exciting atmosphere to prepare visitors for the event they are about to see.

36Senior Thesis - Spring 2004

MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

DESIGN IMPLEMENTATION

In order to create a focus for the space, an acrylic tube is suspended from the ceiling at the center of the space. This column mirrors the four concrete columns framing the space. While the façade lighting design implied the presence of a gem, this structure is modeled to appear as if it is composed of thousands of gems. The primary function of this structure is to lure the visitors to the lower lobby. A 100W metal halide downlight is placed inside the column to transmit a beam of light through the tube. As the light passes through, it reflects off of the thousands of irregular glass surfaces and sends unique patterns of light throughout the space. Since the column is visible from the entrance lobby it will immediately capture the attention of anyone walking through the door of the Brown Center. The glowing geometric cylinder serves as a giant arrow, directing visitors to the lower lobby. In order to draw attention to the staircase, cove lighting is installed at the top of the massive 30’ wall it borders with. Blue LEDs are added to the cove to incorporate the colors of the façade. The cove lights are mirrored on the opposite wall. The cove is installed at the ceiling of both the entrance and auditorium level of this wall. Positioning the fixtures in such a manner will give the appearance that the wall continues through the two levels. This unites the lower portion of the lobby with the balcony above. 39W metal halide downlights provide the ambient light for the space. They are spaces 9’ x 9’ on center across the ceiling of the entrance level. A single row is centered along the overhang at the auditorium level. Because there are many doors along the south wall at both levels, washlights are used to distinguish the important doors. A 70 W metal halide washlight is placed above each of the four auditorium doors. This will highlight these doors, showing visitors how to enter the auditorium.


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

For complete lighting fixture schedule, see appendix A

*Assuming a clean environment and 18 month cleaning cycle 1: Maintenance Category chosen from Figure 9-14, IESNA, 9th Edition 2: Values from Figure 9-17, IESNA, 9th Edition 3: Values from Figure 9-19, IESNA, 9th Edition

AUDITORIUM LOBBY LIGHTING FIXTURE SCHEDULE TYP DESCRIPTION W V MNTNG LAMP BALLAST

A 6” metal halide downlight

100 120 recessed 100PAR38/

SP Electronic HID

B 4” metal halide downlight

39 120 recessed MC39T6/U/

G12/830 Electronic HID

C 5” metal halide washlight

70 120 recessed MC70T6/U/

G12/830 Electronic HID

D LED 6.0 24 cove (45) LED’s -

AUDITORIUM LOBBY LIGHT LOSS FACTORS

FIXTURE MNTNCE

CTG 1 LDD 2 LLD RSDD 3 BALLAST FACTOR

TOTAL LLF

A IV 0.85 0.85 0.96 0.89 0.62 B IV 0.85 0.80 0.96 0.87 0.57 C IV 0.85 0.80 0.96 0.85 0.55 D IV 0.85 0.87 0.96 1.0 0.71

TYPE C

TYPE B

TYPE D

TYPE A

39Senior Thesis - Spring 2004

MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

REFLECTED CEILING PLANS

2121

2121

2121

2121

2121

2121

2121

2121

2121

21

2121

2121

2121

2121

2121

2121

2121

2121

9'-5

"9'

-5"

30'-2

"

6'-6"

9'-5

"9'

-5"

9'-0

"

13'-5"10'-0"

7'-5

"

10'-0"10'-0"

13'-5"10'-0" 10'-0" 10'-0"

9'-0"

9'-5"

8'-3"

9'-5"

23'-6"15'-2"

9'-5"

9'-5"

OPEN TOBELOW


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

REDESIGN RESULTS • Upper Level (Grid Height = 0ft)

Calculation Results: upper right � Grid Metric: Horizontal � Grid Stat Area: upper right � Grid Origin: 88.80, -6.40, 16.40 � Grid Units: Footcandles Grid Values 0.50 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5

44 5.5 7.8 8.2 8.9 14 14 12 11 9.3 43 8.8 9.6 11 15 15 13 12 10 8.5 42 10 12 14 17 16 14 11 9.7 8.1 41 11 14 18 18 17 14 12 9.4 7.8 40 12 14 18 18 17 14 11 9.1 7.5 39 12 13 16 16 15 13 10 8.7 7.2 38 11 13 14 14 13 11 9.6 8.1 6.8 37 11 12 12 12 11 10 8.9 7.6 6.3 36 11 11 12 11 11 9.8 8.6 7.3 6.1 35 11 11 12 12 11 9.9 8.6 7.3 6.1 34 11 12 13 13 12 10 9.0 7.5 6.3 33 12 13 14 15 13 11 9.5 7.9 6.6 32 13 14 16 17 15 13 10 8.3 6.8 31 13 15 17 18 16 13 10 8.5 6.9 30 13 14 16 17 15 12 10 8.3 6.8 29 12 13 14 14 13 11 9.5 7.9 6.6 28 11 12 12 12 12 10 8.9 7.5 6.3 27 11 11 12 12 11 9.8 8.6 7.3 6.1 26 11 11 12 11 11 9.7 8.5 7.3 6.1 25 11 12 12 12 11 10 8.8 7.4 6.2 24 12 13 14 14 13 11 9.3 7.8 6.5 23 13 14 16 16 15 12 10.0 8.2 6.7 22 13 15 17 18 16 13 10 8.4 6.9 21 13 15 17 17 16 13 10 8.4 6.8 20 12 14 15 15 14 12 9.7 8.0 6.6 19 11 12 13 13 12 11 9.0 7.5 6.3 18 11 11 12 12 11 9.9 8.6 7.3 6.0 17 11 11 11 11 11 9.7 8.5 7.2 6.0 16 11 11 12 12 11 10 8.7 7.4 6.1 15 11 12 13 13 12 11 9.4 7.8 6.5 14 12 13 15 16 14 12 10 8.5 7.0 13 12 14 16 18 16 14 11 9.0 7.4 12 12 14 16 19 17 14 11 9.3 7.6 11 11 13 14 18 16 14 12 9.6 7.9 9.5 10 11 12 12 15 14 12 10.0 8.4 8.5 8.8 9.3 10.0 10 15 14 12 11 9.1 7.5 11 8.0 8.6 11 17 15 14 12 10

Statistical Summary Ave Max Min Ave/Min Max/Min Uniformity upper right 12.30 fc 29.80 fc 0.10 fc 182.20 439.50 0.01

0.5 8.5

44 7.5


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

• Stairs – (Grid Height = 0ft)

Calculation Results: stairs � Grid Metric: Horizontal � Grid Stat Area: stairs � Grid Origin: 63.50, 15.66, 9.00 � Grid Units: Footcandles Grid Values 0.50 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5

3.5 7.1 7.8 8.4 9.1 9.8 11 11 12 13 2.5 7.2 7.9 8.6 9.3 10.0 11 12 12 13 1.5 7.4 8.0 8.7 9.4 10 11 12 13 13

0.50 7.6 8.2 8.9 9.6 10 11 12 13 14

Statistical Summary Ave Max Min Ave/Min Max/Min Uniformity stairs 10.20 fc 13.90 fc 7.20 fc 1.40 1.90 0.71

0.5 8.5

3.5 0.5


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

• Lower Level (Grid Height = 0ft)

Calculation Results: lower � Grid Metric: Horizontal � Grid Stat Area: lower � Grid Origin: 82.19, 2.11, 0.00 � Grid Units: Footcandles Grid Values 0.50 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 11 12 13 14 15 36 10 9.5 9.9 10 11 10 9.4 9.1 9.4 9.4 15 15 15 14 12 35 9.8 9.7 10 11 9.8 10.0 11 10 11 11 15 15 14 13 12 34 9.6 10 11 10.0 10 11 12 12 13 13 16 15 14 13 11 33 9.8 10.0 10 10 11 12 12 13 14 17 17 16 14 12 10 32 10 10 10 11 11 12 13 13 14 18 18 16 14 12 10 31 10 10 11 11 11 12 13 12 15 17 17 16 13 11 9.9 30 10 11 11 11 12 12 13 12 14 15 15 14 12 11 9.6 29 11 11 11 11 12 12 13 12 13 14 14 13 12 11 9.3 28 11 11 11 11 12 12 13 11 12 13 13 12 11 10 9.1 27 11 11 11 12 12 13 13 11 12 12 12 12 11 10 9.1 26 11 11 11 12 12 13 14 11 12 13 13 12 11 10 9.2 25 11 11 12 12 12 13 14 12 13 14 14 13 12 11 9.4 24 11 12 12 12 13 13 14 12 14 15 16 14 13 11 9.7 23 12 12 12 12 13 14 15 13 15 17 17 15 13 11 9.8 22 12 12 12 12 13 14 15 13 15 16 17 15 13 11 9.9 21 12 12 12 13 13 14 15 12 14 15 15 14 13 11 9.7 20 12 12 12 13 13 14 14 12 13 14 14 13 12 11 9.6 19 12 12 12 12 13 14 14 11 12 13 13 12 12 11 9.4 18 12 12 12 12 13 13 14 11 12 13 13 12 11 10 9.3 17 12 12 12 12 13 14 14 11 12 13 13 12 12 11 9.4 16 12 12 12 12 13 13 14 12 13 14 14 13 12 11 9.5 15 12 12 13 12 13 14 15 12 14 15 15 14 13 11 9.7 14 12 12 13 13 13 14 15 13 15 16 16 15 13 11 9.9 13 12 13 13 13 13 14 15 13 15 17 17 15 13 11 9.9 12 12 12 13 13 13 14 15 13 14 16 16 15 13 11 9.7 11 12 12 12 13 13 14 15 12 13 14 14 14 12 11 9.5 9.5 12 12 12 13 13 14 14 12 13 13 13 13 12 11 9.3 8.5 12 12 12 12 13 13 14 11 12 13 13 12 11 10 9.3 7.5 11 11 12 12 12 13 13 11 12 13 13 12 11 10 9.3 6.5 11 11 11 12 12 13 13 11 12 13 14 13 12 11 9.5 5.5 11 11 11 12 12 13 13 12 13 15 15 14 13 11 9.8 4.5 11 11 12 12 12 13 14 12 14 17 17 15 13 12 10 3.5 11 12 12 12 12 13 13 12 14 16 18 16 14 12 10 2.5 11 12 12 12 13 12 13 12 14 15 18 16 14 12 11 1.5 12 12 12 12 13 13 12 11 12 13 17 16 14 13 11 0.50 12 12 12 12 13 13 14 9.8 11 11 11 15 14 13 12

Statistical Summary Ave Max Min Ave/Min Max/Min Uniformity lower 12.50 fc 17.80 fc 9.10 fc 1.40 2.00 0.71

0.5 15

36 0.5


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

*View from the atrium

*View down the staircase


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

POWER DENSITY

• Total Area = 2416 ft2

• Maximum Power Density = 1.0 W/ft2 (ASHRAE 90.1)

TYPE A: Power Density = 116/2416 = 0.048 W/ft2

TYPE B: Power Density = 765/2416 = 0.317W/ft2

TYPE C: Power Density = 328/2416 = 0.136 W/ft2

TYPE D: Power Density = 420/2416 = 0.174W/ft2 TOTAL = 0.675 W/ft2

Less than 1.0 W/ft2

AUDITORIUM LOBBY LIGHTING POWER CONSUMPTION

TYP # OF

FIXTURES LAMP V # LAMPS/ FIXTURE

WATTS/ LAMP BALLAST

TOTAL WATTS

A 1 100PAR38/SP 120 1 100 Electronic (BF = 0.86)

116

B 17 MC39T6/U/ G12/830 120 1 39

electronic (BF = 0.87)

765

C 4 MC70T6/U/ G12/830 120 1 70

electronic (BF = 0.87)

328

D 70 (45) LED’s 24 1 6.0 - 420 TOTAL 1,629


MICA: BROWN CENTER

BALTIMORE, MD

KEENAN DAE OMALLEY

LIGHTING/ELECTRICAL

CONCLUSION The lighting redesign of the auditorium lobby achieved the established goals. The glass filled column brings a focus to the space and lures visitors inward. The blue light of the cove adds interest to the continuous spans of concrete. And the downlighting provides directional light. An average of 12 fc was obtained at the floor of the space, meeting the target horizontal illuminance of 10 fc. Because the lobby is open to the rest of the building, light from other areas will spill into the space. These luminaires are not considered in the calculations, but will add to the illuminance level of the space. A power density of 0.675 w/ft2 was obtained from the lighting redesign, under the 1.0 w/ft2 required by ASHRAE 90.1. The power density is significantly less than the current system. Overall, the design both exemplifies the gem metaphor and meets all established design criteria.


mica: brown center keenan dae omalley · 2004-04-12 · keenan dae omalley lighting/electrical...

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