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The document analyzes the acoustic and lighting performance of a space before and after a rehearsal. For acoustics, it measures reverberation times in different zones and calculates the total sound absorption of materials used. It finds that materials were chosen to create a harmonic acoustic environment while allowing sounds from the stage to be heard clearly. For lighting, it measures daylight factors in different zones and compares existing and required numbers of fixtures. It concludes that while natural light provides substantial lighting, artificial lights are insufficient in the evening and the space appears dim.
![ACOUSTIC ANALYSIS
Before
Rehearsal
1 2 3 4 5 6 7
A 76 76 78 63 50 77 83 Sitting Area
B 76 77 85 75 66 80 85 New Nursery 1
C 77 74 67 78 87 85 88 Stage
D 85 75 67 82 77 73 74 Robing Room
E 75 83 77 81 83 77 80 Audio Control Centre
F 66 81 73 79 75 71 75
G 71 77 71 64 70 66 70
After Rehearsal
1 2 3 4 5 6 7
A 62 55 60 67 62 54 83
B 57 63 68 56 65 66 85
C 62 66 63 53 68 67 88
D 65 60 61 63 75 70 74
E 58 58 58 61 66 69 80
F 56 64 56 71 71 69 75
G 51 62 65 66 66 64 70
Reverberation Time of Zone C ( Stage)
Materials (Wall) Area (𝒎 𝟐) Acoustic
Absorption
Coefficient
Area x Absorption
Coefficient
Perforated panel 156.44 m² 0.15 23.47
Materials (Ceiling
and flooring)
Area (𝒎 𝟐) Acoustic
Absorption
Coefficient
Area x Absorption
Coefficient
Timber flooring 95.16 m² 0.10 9.52
Perforated ceiling
panel
95.16 m² 0.72 68.52
Total sound absorption 101.51
𝑇 =
0.161 × 𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑍𝑜𝑛𝑒
(𝐴𝑟𝑒𝑎 𝑜𝑓 𝑆𝑢𝑟𝑓𝑎𝑐𝑒 × 𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐶𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡)
𝑇 =
0.161 × 531.14
101.51
𝑇 = 0.84𝑠
Reverberation Time of Zone A (Sitting Area)
Materials (Wall) Area (𝒎 𝟐) Acoustic Absorption
Coefficient
Area x Absorption
Coefficient
Plastered brick wall with
paint
59.1m² 0.02 1.2
Perforated acoustic
panel
135.4m² 0.15 20.2
Materials (Ceiling and
flooring)
Area (𝒎 𝟐) Acoustic Absorption
Coefficient
Area x Absorption
Coefficient
Nylon carpet on
concrete floor
699.3 m² 0.14 97.9
Perforated ceiling 814.8m² 0.72 819.8
Materials (Furniture) Area (𝒎 𝟐) Acoustic Absorption
Coefficient
Area x Absorption
Coefficient
Cushioned chair 286.7 m² 0.80 229.4
Timber double leaves
door
18 m² 0.15 2.7
Occupant 441 0.46 202.9
Total Sound Absorption 1374.1
Total Floor Area (m²) = 699.7 m²
Volume of Zone (𝑚3) = 4575.54𝑚3
Occupancy =441Calculation:
𝑇 =
0.161 × 𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑍𝑜𝑛𝑒
(𝐴𝑟𝑒𝑎 𝑜𝑓 𝑆𝑢𝑟𝑓𝑎𝑐𝑒 × 𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐶𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡)
𝑇 =
0.161 × 4575.54
1374.1
𝑇 = 0.54𝑠
Building Science 2 [ARC 3413] Project 1: Lighting and Acoustic Performance Evaluation and Design.|| Mr. Sanjeh Raman
Ch’ng Xing Yue 0310425 || Elaine Bong Poh Hui 0310432 || Goh Chin Zhi 0314562 || Lau Ee Tian 0309596 || Wesley Hew Xin Han 0307585
CONCLUSION
The materials used were
chosen specifically to
create a harmonic
acoustical environment.
Acoustic panels are
attached on most surfaces
to reduce echo while
allowing sounds from the
stage to be heard clearly
by the audience.](https://image.slidesharecdn.com/board-150714111609-lva1-app6892/85/bscience-Board-1-320.jpg)
![LIGHTING ANALYSIS
Zone A (Cashier Counter Top)
Zone B (Kitchen Counter Top)
Zone C (Dining Near Window)
Zone D (Entrance)
Zone E (Dining 1)
Zone F (Kitchen)
Zone G (Dining 2)
Zone H (Dining 3)
Zone I (Dining 4)
45°
45°45°
85°
Zone Daylight Factor
(%)
A 0.05
B 0.07
C 0.1
D 0.23
E 0.09
F 0.09
G 0.07
H 0.05
I 0.09
Zone Existing (Nos. of Fixtures) Calculated (Required nos. of
Fixtures)
A 6 11
B 6 8
C 3 3
D 12 4
E 10 11
F 6 7
G 24 20
H 12 10
I 18 16
CONCLUSION
The cafeteria acts as the main entry circulation path aside
from the lobby as it is more prominent in terms of location and
its potential to perpetuate numerous human activities. As such,
the lighting within the cafeteria plays a significant role to
ensure the comfortability and perceptibility of users. From the
research, we can deduce that the multiple fenestrations along
the edges of the cafeteria provides the space with substantial
amount of natural lighting where as artificial lighting is only
partially needed to light up spaces where light is unable to
reach. From evening onwards however, the space becomes
dependent on artificial lights positioned in the cafeteria which
is not sufficient and thus may appear very dim.
Building Science 2 [ARC 3413] Project 1: Lighting and Acoustic Performance Evaluation and Design.|| Mr. Sanjeh Raman
Ch’ng Xing Yue 0310425 || Elaine Bong Poh Hui 0310432 || Goh Chin Zhi 0314562 || Lau Ee Tian 0309596 || Wesley Hew Xin Han 0307585](https://image.slidesharecdn.com/board-150714111609-lva1-app6892/85/bscience-Board-2-320.jpg)
bscience Board
- 1. ACOUSTIC ANALYSIS Before Rehearsal 1 2 3 4 5 6 7 A 76 76 78 63 50 77 83 Sitting Area B 76 77 85 75 66 80 85 New Nursery 1 C 77 74 67 78 87 85 88 Stage D 85 75 67 82 77 73 74 Robing Room E 75 83 77 81 83 77 80 Audio Control Centre F 66 81 73 79 75 71 75 G 71 77 71 64 70 66 70 After Rehearsal 1 2 3 4 5 6 7 A 62 55 60 67 62 54 83 B 57 63 68 56 65 66 85 C 62 66 63 53 68 67 88 D 65 60 61 63 75 70 74 E 58 58 58 61 66 69 80 F 56 64 56 71 71 69 75 G 51 62 65 66 66 64 70 Reverberation Time of Zone C ( Stage) Materials (Wall) Area (𝒎 𝟐) Acoustic Absorption Coefficient Area x Absorption Coefficient Perforated panel 156.44 m² 0.15 23.47 Materials (Ceiling and flooring) Area (𝒎 𝟐) Acoustic Absorption Coefficient Area x Absorption Coefficient Timber flooring 95.16 m² 0.10 9.52 Perforated ceiling panel 95.16 m² 0.72 68.52 Total sound absorption 101.51 𝑇 = 0.161 × 𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑍𝑜𝑛𝑒 (𝐴𝑟𝑒𝑎 𝑜𝑓 𝑆𝑢𝑟𝑓𝑎𝑐𝑒 × 𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐶𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡) 𝑇 = 0.161 × 531.14 101.51 𝑇 = 0.84𝑠 Reverberation Time of Zone A (Sitting Area) Materials (Wall) Area (𝒎 𝟐) Acoustic Absorption Coefficient Area x Absorption Coefficient Plastered brick wall with paint 59.1m² 0.02 1.2 Perforated acoustic panel 135.4m² 0.15 20.2 Materials (Ceiling and flooring) Area (𝒎 𝟐) Acoustic Absorption Coefficient Area x Absorption Coefficient Nylon carpet on concrete floor 699.3 m² 0.14 97.9 Perforated ceiling 814.8m² 0.72 819.8 Materials (Furniture) Area (𝒎 𝟐) Acoustic Absorption Coefficient Area x Absorption Coefficient Cushioned chair 286.7 m² 0.80 229.4 Timber double leaves door 18 m² 0.15 2.7 Occupant 441 0.46 202.9 Total Sound Absorption 1374.1 Total Floor Area (m²) = 699.7 m² Volume of Zone (𝑚3) = 4575.54𝑚3 Occupancy =441Calculation: 𝑇 = 0.161 × 𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑍𝑜𝑛𝑒 (𝐴𝑟𝑒𝑎 𝑜𝑓 𝑆𝑢𝑟𝑓𝑎𝑐𝑒 × 𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 𝐶𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡) 𝑇 = 0.161 × 4575.54 1374.1 𝑇 = 0.54𝑠 Building Science 2 [ARC 3413] Project 1: Lighting and Acoustic Performance Evaluation and Design.|| Mr. Sanjeh Raman Ch’ng Xing Yue 0310425 || Elaine Bong Poh Hui 0310432 || Goh Chin Zhi 0314562 || Lau Ee Tian 0309596 || Wesley Hew Xin Han 0307585 CONCLUSION The materials used were chosen specifically to create a harmonic acoustical environment. Acoustic panels are attached on most surfaces to reduce echo while allowing sounds from the stage to be heard clearly by the audience.
- 2. LIGHTING ANALYSIS Zone A (Cashier Counter Top) Zone B (Kitchen Counter Top) Zone C (Dining Near Window) Zone D (Entrance) Zone E (Dining 1) Zone F (Kitchen) Zone G (Dining 2) Zone H (Dining 3) Zone I (Dining 4) 45° 45°45° 85° Zone Daylight Factor (%) A 0.05 B 0.07 C 0.1 D 0.23 E 0.09 F 0.09 G 0.07 H 0.05 I 0.09 Zone Existing (Nos. of Fixtures) Calculated (Required nos. of Fixtures) A 6 11 B 6 8 C 3 3 D 12 4 E 10 11 F 6 7 G 24 20 H 12 10 I 18 16 CONCLUSION The cafeteria acts as the main entry circulation path aside from the lobby as it is more prominent in terms of location and its potential to perpetuate numerous human activities. As such, the lighting within the cafeteria plays a significant role to ensure the comfortability and perceptibility of users. From the research, we can deduce that the multiple fenestrations along the edges of the cafeteria provides the space with substantial amount of natural lighting where as artificial lighting is only partially needed to light up spaces where light is unable to reach. From evening onwards however, the space becomes dependent on artificial lights positioned in the cafeteria which is not sufficient and thus may appear very dim. Building Science 2 [ARC 3413] Project 1: Lighting and Acoustic Performance Evaluation and Design.|| Mr. Sanjeh Raman Ch’ng Xing Yue 0310425 || Elaine Bong Poh Hui 0310432 || Goh Chin Zhi 0314562 || Lau Ee Tian 0309596 || Wesley Hew Xin Han 0307585