SCHOOL OF ARCHITECTURE, BUILDING AND DESIGN Bachelor of Science (Honours) in Architecture
Building Science II (ARC3413/BLD1303) PROJECT 1 : Auditorium : A Case Study on Acoustic Design Building chosen: MAS AcadamyAuditorium
TUTOR: Azim Sulaiman
MEMBERS: Sia Hong Jie Iche Omari Keshni Devi Sobarun Sham Zhen Wen Danny Tong Pablo Idris Song Sung Ho Jeffrey Liew Tan Wei Zhen
0323506 0323347 0323062 0317733 0323484 0321895 0322100 0317951 0318560
Table of Contents
Table of Contents
:01
1. Introduction
:03
2. Drawings of the auditorium
:07
3. Sound Absroption materials used
:13
4. Sound Source :17 5. Sound Path
:21
6. Conclusion
:24
7. References
:25
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1. INTRODUCTION
Introduction
M
alaysia Airlines Academy (MAA) was established
concerts, orchestra performances, traditional dances,
in October 1994 to cater to the training needs
fund raising for the blind, dance performances, cultural
of Malaysian Airlines employees. The building operated
collaborative art performances, Indian concerts, and
since 1995 and its distinct entity has been identified
many more.
as a key enabler to transform, educate and develop aviation professionals of the future.
The auditorium is constructed in a fan-shape design which helps the acoustics in the room. The speakers
The Malaysia Airlines Academy Auditorium is located
are positioned high enough for the raked floor of the
in Kelana Jaya which is just next to Lincoln University
auditorium and protruded into the audience area shows
College. The auditorium can fit up to 600 people. Even
the acoustical design consideration done for mixed
though the auditorium capacity is average, Malaysia
acoustical use. Therefore, all kind of programmes could
Airlines Academy has seen plenty of activity. Students
be held in Malaysia Airlines Academy Auditorium.
and staff of the academy use it as well for, MAS Cabin Crew Graduation, Annual General Meetings, and since the facility is open for public renting, they host plenty of programmes such as graduations, kindergarten
N
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Event posters :
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2. DRAWINGS OF THE AUDITORIUM
Drawings of Auditorium
Control room
Seats
Stage
Storeroom
Entrance
Entrance
Backstage Toilet
Backstage Entrance Storeroom
Toilet
Mechanical room
Plan 1 : 200 -8-
Storeroom
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Section 1 : 100
Isometric 1 : 200 - 10 -
Axonometric 1 : 200 - 11 -
Isometric 1 : 200
3. MATERIAL USED FOR THE AUDITORIUM
Material of Auditorium used
No.
Materials
Color
125
Absorption(Hz) 500 2000
Surface
Empty Fabric Seats 1.
Red
0.12
0.28
0.28
Semi-smooth
Grey
0.25
0.8
0.9
Rough
Dark Purple
0.05
0.10
0.20
Smooth
Red & Grey
0.10
0.50
0.60
Rough
White
0.20
0.20
0.40
Semi-smooth
Brown
0.02
0.05
0.10
Smooth
Brown
0.15
0.10
0.10
Smooth
White
0.02
0.05
0.05
Semi-smooth
Transparent
0.30
0.10
0.07
Smooth
Accoustic Panel 2.
Curtain 3.
Floor Carpet 4.
Plaster Wall 5.
Wooden Floor Finish 6.
Wood Board 7.
Concrete Ceiling 8.
Glass Window 9.
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Reverbation time calculation 500Hz Surface Walls (Accoustic Panel) Walls (Plaster) Walls (Wood Board ) Ceiling (Concrete ceiling) Floor (Carpet Flooring) Floor (Wooden Floor Finish) Curtain Occupants Total absorption (A)
Area (m2) Absorption Abs. units Absroption Abs. unit (m2 coefficient (m2 sabins) (Hz) sabins) 400 200 100 400 300 100 50 600
0.8 0.2 0.1 0.05 0.5 0.05 0.1 0.46
320 40 10 20 150 5 5 276
0.9 0.4 0.1 0.05 0.6 0.1 0.2 0.6
826
500Hz:
=
1000Hz
360 80 10 20 180 10 10 360 1030
1000Hz:
=
The ideal reverbation time for multipurpose auditorium is 1.5s ~ 2.5s, but the results show this auditorium’s reverbation time is slightly below ideal range, so it is more suitable to be used as a speech hall or lecture hall.
4. SOUND SOURCE
Sound Source Sounds can be termed as wanted and unwanted sound(noise). Sound sources that are meant to be heard in the auditorium are from the sources as follows.
Wall Speaker
Ceilling Speaker (A)
A
Ground Speaker (B)
A
B
B
*Unmarked soundsources are wall speaker
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NOISE Source
2
2
2
2
2
1
1 3
1
1
2
2
2
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1 2 3
Level of dB during idle and operating
21dB
21dB 27dB
43dB
Idle
73dB
73dB 69dB
84dB 34dB
34dB
Operating
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5. SOUND PATH
Sound Path
Sound path is the traversing of the sound wave from a source that is travelling perpendicular and in a straight line within the space. The geometric acoustics where the individual assumed the dimension of a room is large compared to the wavelength of sound then one may treat the sound waves in the room in much the same way as light rays are treated in geometrical optics.
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The auditorium ceiling is mutifaced in order to create more sound reflection and dispersion. The sound from the stage is reflected off from the ceiling and dispersed into the auditorium seating below. The back wall of the stage is covered by a large curtain to prevent sound waves from reflecting on the hard surface of the wall behind it, thus preventing the people on stage from hearing echoes of thier own performances or speeches. When a loud sound is made from the center of the stage, there is a echo coming from the auditorium. The echo is produced by the exterior of the control room, which is made of wood that reflects the sound waves. There is a sound shadow located behind the auditorium’s control room.
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6. CONCLUSION The MAA Auditorium is a hall used for multiple types of events ranging from speeches to orchestras. But from the design of the auditorium, it seems that it is best used as a speech auditorium. This is becasue it doesnt have many devices on the walls to increase the reflection and dispersion of sound, but the walls are padded to dampen the sound and isolate it, which is best for a speech oriented auditorum.
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7. REFERENCE • Hilda, F. (1970, January 01). Malaysia Airlines Academy (MAS Academy). Retrieved May 01, 2017, from http://fhildagreat.blogspot.my/2012/11/malaysia-airlines-academy-mas-academy.html • JOURNEYS FILLED WITH THE RICHNESS OF MALAYSIA. (n.d.). Retrieved May 01, 2017, from https://www.malaysiaairlines.com/ • 43rd Annual General Meeting Malaysian Airline System Berhad [PDF]. (2014, June 25). Malaysian Airline System Berhad. • PUSPADEVI, S. (2012, March 04). Carnatic vocalist Arun wows the crowd at fundraising concert - Community. Retrieved May 01, 2017, from http:// www.thestar.com.my/news/community/2012/03/05/carnatic-vocalistarun-wows-the-crowd-at-fundraising-concert/ • Grondzik, W. T., & Kwok, A. G. (2015). Mechanical and electrical equipment for buildings. Hoboken, NJ: Wiley.
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