Lighting Depth
Lobby/Prefunction Space
The lobby and prefunction space surround the auditorium that is located in the
center of the addition. The lobby is located on the ground floor, and the
prefunction space is below on the basement floor. Both spaces are open to one
another. Traffic between the two spaces travels on a set of stairs or travels on
the elevator that is next to those stairs. The lobby also leads to a corridor that
travels around the other side of the auditorium. The prefunction space contains
one entrance into the auditorium and at the end of the corridor is the other. Two
exits are located in the lobby, one at each end along its east wall. And one is
located at the west wall of the prefunction space. There are no windows within
the space so no day light enters the prefunction or the lobby.
Brian Regan
7
Electrical and Lighting
Space Conditions
The materials on the walls vary in the two spaces. The outer perimeter wall of
the two spaces is made of stone panels of limestone. The inner wall that divides
these spaces from the auditorium is wood panels w/ a shiny finish. Also along
the outer walls is a section where a red fabric was used that extends from the
ground to the ceiling. The ceiling height is maintained at 8ft. in the lobby. That
same ceiling extends over the stairs and the lower floor of the lobby at a height
of 13ft. Near the center of the prefunction space the ceiling drops down to the
original 8ft. Supports are placed throughout both rooms as columns with
matching wood siding.
LOBBY
PREFUNCTION
FINISHES
FLOOR
WALLS
Ceiling
Furniture
Neutral
Color
Wood Paneling
Art Work
Carpet
ρ = .39
(varnished)
ρ = .54
Gypsum Board
(eggshell
paint)
p =.81
(possibly loacted
throughout space)
Limestone Panels
ρ = .45
Brian Regan
8
Electrical and Lighting
„ Design Goals
„
„
„
„
„
Establish aesthetic attraction to new spaces
Create energy efficient system
Lighting to create flow for traffic
Maintain proper illuminance for activities within the space
Provide Adaptation at Entrances/Transition Spaces
„ Allows eyes to adjust to changing light levels
„ Control dimmers w/ manual preset system
4’ linear
fluorescent
perimeter fixture
10” downlight
w/ 2-32W
compact
fluorescents
8” downlights
w/ 32W compact
fluorescents
4’ linear
wallwashers
w/ a 54W T5
fluorescent lamp
8” downlights
w/ 26W compact
fluorescents
Brian Regan
9
Electrical and Lighting
Lighting Design
The lighting design contained many purposes. One was to lead people through
the space creating a flow for the traffic to enter the auditorium. The vertical
surface of the dropped ceiling was viewable from the foyer so it was completed
illuminated by 32W fluorescent perimeter luminaries. This will attract a
viewer’s eye in that direction to help them locate the auditorium’s lobby at their
right. As a person enters the lobby the first thing they will notice is the brightly
illuminated wood paneling that surrounds the auditorium. They are covered
with light by 54W linear fluorescent wall
washers. These wood surfaces are brighter than the outer perimeter walls to
help a person realize that the auditorium is on the other side of those walls. The
bright wood paneling guides the person around both sides of the auditorium
leading traffic to an entrance.
Another reason for the inner and outer walls to be illuminated differently was to
accent the different materials being used. The complete linear wash of light
over the wood will accent the smooth surface of the wood. While the
juxtaposed positioning of the recessed down lights along limestone will create
more shadows along the rough texture. The limestone has a dim wash of light
across it. This light will accent the texture of the paneling but it will also create
a similarity of the outdoor lighting. The experience will seem as if a person is
entering a building with the outdoor moon light to their back. It will be as if
people are entering a building within a building. The 26W down lights are
dimmable. During the day they will operate at 100% of the ballast’s capability,
so during the day the eyes can adjust to the change of having no day light.
The other objects considered during the design were the elevator and the
columns. Since the elevator is viewable from all four sides the same perimeters
lights surround it. These fixtures illuminated the elevator’s lobby side entrance,
and they added to the theme of having light surround the spaces within this new
area. Many of the light fixtures were placed close to the columns to accent the
wood paneling. Since it was the same material as the auditorium wall, they
should be illuminated similar to one another.
Brian Regan
10
Electrical and Lighting
Most of the downlights were placed close to the walls to create an open feel
within the space. I felt both the lobby and the prefunction space were
narrow, so to widen the space most of the lighting was placed along the walls.
In places where the linear wall washers were used, more 26W fixtures were
closely place to adjust for the lack of downlight.
SCHEDULE
Type
Manufacturer
2
Description
fully recessed 8" compact fluorescent
downlight
fully recessed 8" compact fluorescent
downlight
3
recessed 4' fluorescent linear wallwash
4
4' linear fluorescent perimeter fixture
Erco
Prudential
Ltg.
5
fully recessed 8" fluorescent downlight
Erco
1
Erco
Erco
Lamp
triple tube,
835
triple tube,
835
Watts
T5, 835
54W
T8, 735
triple tube,
835
32W
232W
32W
26W
Ballast
electronic
dim.
electronic
dim.
electronic
dim.
electronic
dim.
electronic
dim.
BALLAST
Type
Lamp
Circuit
Ballast Type
Watts
1
2
3
4
5
32
26
54
32
64
Power
PCA/ 1/32/42 CFL EXCEL one4all
PCA/ 1/26 CFL EXCEL one4all
PCA/ 1/54 T5HO EXCEL one4all
PCA/ 1/32/42 CFL EXCEL one4all
PCA/ 2/32/42 CFL EXCEL one4all
34W
28W
60W
34W
66W
LIGHT LOSS FACTORS
Type
RSDD
LDD
LLD
BF
Total
LLF
1
2
3
4
5
0.96
0.96
0.92
0.92
0.96
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.92
0.85
0.92
0.93
0.93
0.93
0.93
0.93
0.69
0.69
0.69
0.64
0.72
Brian Regan
11
Electrical and Lighting
„ Design Criteria
„ Power Density = 1.8 W/sqft.
„ Vertical Illuminance
„ Facial lighting = 10 fc
„ Horizontal Illuminance
„ Reading or Writing tasks = 30 fc
„ Traffic = 10 fc on floor
POWER DENSITY
Type
Lamp
Watts
Input
Watts
Num. of
Fixtures
Total
Watts
1
2
3
4
5
32
26
54
32
64
34
28
60
34
66
8
36
12
16
1
272
1008
720
544
66
Total Wattage
2610
Total Square Feet
1824
Power Density
1.43
POWER DENSITY BELOW REQUIREMENT:
1.43W/SQFT. < 1.8W/SQFT.
AVERAGE FLOOR ILLUMINANCE = 30 – 33 footcandles
Brian Regan
12
Electrical and Lighting
Controls
In the electrical room behind the projection room all lights in the lobby and
prefunction space will be controlled by a preset dimming track system. Every
circuit of luminaries will have its preselected power allowances that have been
chosen by the owner. These settings will create different complex scenes
within space that can be accessible easily by pressing the proper switches. The
system will allow the control of different zones of the lobby and the separate
zones of the prefunction space within both the seating and the stage area. So
during events when intermission begins someone can be prepared to readjust
the lighting for people to exit and enter the auditorium. The controls will allow
patrons when entering the space to adjust their eyes to different light levels. As
they enter the space the lights can either grow dimmer as they travel through the
space or the opposite when people have entered the building during a dark
night.
Circuiting
Each zone within the lobby a will run on its own circuit. All homeruns of each
circuit lead to the control center. The each row of cove lights and then each
row of strip lights will be on one circuit to distribute different levels of light in
different areas of the each space. The downlights along the perimeter walls will
have one circuit, and the wallwashers will have their own. Basically, in these
two spaces a group of lamps or a single lamp that highlights a certain object
will be on one circuit. The objects highlighted within the space will determine
the circuitry.
Brian Regan
13
Electrical and Lighting
Renderings
South End of Lobby Facing Elevator
Lobby Entrance with View into
Prefunction Space
Elevator Entrance into Prefuction
Space with Stairs to the Right
Prefunction Entrance Facing Elevator
and Stairs
Brian Regan
14
Electrical and Lighting
Illuminance Values
Illumination Levels Vary
Between the Different
Materials
Everything in the Space is
decorated with accent
lighting
Everything in the Space is
decorated with accent
lighting
Brian Regan
15
Electrical and Lighting