The Jamshed Bhabha Theatre was built in 1959 in Mumbai, India. It was envisioned by Dr. Jamshed Bhabha and designed by architects Philip Johnson and Patel Batliwala Associates. The 1,109 seat auditorium uses sound absorbing materials like wool carpeting and diffusive wooden panels to optimize acoustics. It has a stage, green rooms, and a technical control room to facilitate performances.

1. ACOUSTICS
CASE STUDY
AUDITORIUM
1. Jamshed Bhabha Theatre
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2. LOCATION
LOCATION:
FOUNDER:
ARCHITECT
N.c.p.a, marg,south Mumbai
Dr, jamshed bhabha
=philip jonsen and patel batiwala
associates
YEAR =1959
Capacity =1109 person
• Founder :Dr.Jamshed J Bhabha
The National Center for the Performing
Arts (NCPA) was envisioned by the late Dr.
Jamshed Bhabha as a bastion to be an
upholder of the arts and culture in
Mumbai and India
• Architect :Philip Johnson and
Patel Batliwala Associates
SITE
 The nepa complex occupies an area
of about 3200m2 at nariman Point
on load reclained from the sea,
 The site can be accessed through 6
gates ,the side is divides in to 6
major blocks
NEIGHBOURHOOD
 The site is located in the commercial area
 Ncpa apartment is surrounded by in environment
 Hotel
 Mall
 Offices . Etc.
 Heritages building of church gates station is
1km a ways
 Others important land marks is the mantraya
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3. SITE LAYOUT
A.- Tata theater
B.- jamshed bhabha theater
C.- main administration offices
D.- teaching and researchblock libraries
E.- experimental theater
F. Goldrej dance academy theater
G.- open air plaza
R. –residences
- staff
guest room
.- nepa apartment
-entry gates
AUDITORIUM LAYOUT
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4. PUBLIC ENTRY/EXIT
AND SEATING
 Total no ,of public entries/ and exit =8
 6 on the side aisles (3 on each side
2 coming from the foyer (on aisle passages)
 ACCESS To access the theatre for the public, there are:
• 6 side doors
• 2 foyer entries
In house sound and light
monitor
Orchestra pit
stage
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5.  DOORS
• 2.4 m (w) x 2.1 m (h)
• 7 inch thick
• With panic bars
MATERIALS
 2cm Leather and thick foam cushioning from
the outside to prevent outside noise intothe
theatre and 15cm dense wood inside.
 SEATING
Seating for 1109 and gets reduced by the use of:
• Orchestra pit (91 seats)
• In house sound and light monitor (15 seats)
DETAILS OF DOORS
 Backstage Entries/Exits Doors
 ,Total no. of backstage entries/exit=4
Backstage Entries/ExitsDoors
 ,1 entry from lobby inside (for artists)
crew members
Dimension;
Size=-2.4 m(width )=2.1m (height)
Thickness =3 inch (7.28cm)thick
material
1cm leather and foam crushing out side
and remaining dense wood inside

6. Backstage Entries/Exits
 3. The entries directly from outside (to
load /un load the props and instrument
#. Dimension
 Size =3.0 m (width)* 5.6m (height)
Types
 -2 woodendoor and other 1 rolling shutter
 BACKSTAGE  BACKSTAGE ENTRY FOR CREW MEMBERS
There are 4 entries for artists and crew members
directly to the backstage of which 1 is from the
foyer.
• 2.4 m (w) x 2.1 m (h)
• 3 inch thick.
• 1cm thick leather and foam cushioning outside
and rest is dense wood inside.
 LOADING/UNLOADING
There are 3 entries directly from outside for
loading/unloading of the props and instruments.
• 3m (w) x 5.6m (h)
• 2 x wooden doors
• 1 x rolling shutter. The A.C. compressors are all
placed on the backside of the stage along with the
fire equipment.

7.  Stage Entries/Exits
 Totalno, of stage entries /exits=6
 Types and dimension
 4 single door =1.2m (
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8.  GREEN ROOM
• Total no. of green rooms = 10
• No. of floors = G+2
• Ground floor – 4 rooms
• 1st floor – 3 rooms
• 2nd floor – 3 rooms
• Sound proof 3inch thick backstage door to
green room
• 2inch thick wooden greenroom doors
• Each green room has an A.C.
• Each green room has its own toilet and
cupboards
• There are 3 makeup mirrors in each green
room with 6 lights for each mirror.
 WALLS
 • The panels on the walls around the first three
seating rows / orchestra pit of the auditorium is
made of concrete or Plaster of Paris, with a
pointed finish plaster.
 • Marble is used for the paneling of the lower
portions of the auditorium.
 • The panels above the control booth in the rear
of the auditorium are made of concrete with
marble inlays.
 • There are hollow projections that come out
from the sides of the auditorium that may act as
resonators or anti focusing surfaces that help in
dispersion of sound.
 • The rear of the stage has diffusive wooden
panels in different shapes.
 • This along with the acrylic banners hung in the
ceiling help to diffuse and reflect sound
appropriately intothe auditorium.

9.  FLOORS AND CATWALKS
AUDITORIUM
• The material used in the flooring is woolen carpet.
• These woolen carpets are very good absorptive
material.
• The carpet is 80% wool and 20% nylon.
STAGE
• The stage floor is made of hard wood
CATWALK
• There are 33 Back drops which work on counter
balance system.
• The steel beams in the catwalk are coated with
vermicular coating, hence heat can be absorbed for 5-6
hours.
• There is a catwalk above the seating area for changing
and repairing lights. The intensity of lights can be
controlled from the technical control room.
 CONTROL ROOM
• Control is divided into three parts
• The first section was sound room with
another partitioned channel mixer in the third
room.
• The second section was projection room and
had different opening sizes for different types
of projectors.
• The third part was light room which had the
additional fire setup
• The whole control room was air conditioned
and carpet floored

10.  CONTROL ROOM
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11. AUDITORIUM
INVERTED CEILING
PLAN
• Dividedinto3 parts the ceiling inthe middle can
double up for the extendedstageor audience.
• The ceiling of the stage and the adjacent are laid
at an angle while the ceiling of the seating areais
suspended2-3mbelow the actual ceiling surface.
• The grid like ceiling is equippedwithcentralized
air conditioning systemandlighting fixtures
spreadall over covering the entireseating area.
• In betweenthe gridis another framework which
holds the false ceiling inplace.
STAGE FLOOR PLAN

12. STAGE INVERTED
CEILING PLAN
SECTION
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13. end
Thank you