Lighting and Acoustic Research

3. 5.3.1 Acoustic Data
(a) Sound absorption coefficient on the building materials
Zone Category Material Absorption Coefficient Colour Surface
Texture
500Hz 2000Hz 4000Hz Grey Smooth
A-F Ceiling
Wall
Floor
Smooth Unpainted Concrete 0.02 0.02 0.05
D Wall
Column
Red Brick 0.03 0.05 0.07 Red Rough
B Curtain Glass
(6mm)
Wall 0.04 0.02 0.02 Transparent Smooth
5.3.1.1 Non-Peak Hours Acoustic Data and Peak
Hours Acoustic Data
Zone Coordinate
Non-peak
hour
reading (dB)
Peak hour
reading
(dB)
A
C9 69 63
D9 71 60
E9 69 61
F9 71 61
G9 63 60
H9 71 65
I9 70 61
Highest reading 71 65
Lowest reading 63 60
Zone Coordinate
Non-peak
hour
reading (dB)
Peak hour
reading
(dB)
B
C8 60 84
D6 61 74
D7 62 67
D8 62 69
E6 69 76
E7 65 65
E8 60 67
F6 60 60
F7 63 63
F8 60 65
G6 62 65
G7 60 64
G8 66 61
H6 // //
H7 61 64
H8 62 75
I9 70 61
Highest reading 70 84
Lowest reading 60 60

4. Zone Coordinate
Non-peak
hour
reading (dB)
Peak hour
reading
(dB)
C
D3 61 67
D4 64 70
D5 65 74
E3 65 74
E4 60 67
E5 63 69
F3 60 70
F4 61 64
F5 61 78
G3 67 67
G4 61 65
G5 61 65
Highest reading 67 78
Lowest reading 60 65
Zone Coordinate
Non-peak
hour
reading (dB)
Peak hour
reading
(dB)
D
A1 / /
A2 61 67
A3 60 66
A4 62 72
A5 64 75
A6 60 75
A7 60 73
B1 / /
B2 65 66
B3 62 68
B4 62 70
B5 60 73
B6 60 78
B7 63 77
Highest reading 65 78
Lowest reading 60 66
`
Zone Category Material Absorption Coefficient Colour Surface
Texture
500Hz 2000Hz 4000Hz
A-D Furniture
(Table and
Chair)
Timber 0.22 0.38 0.30 Dark
Brown
Rough
F Furniture
(Table and
Chair)
Plastic 0.14 0.14 0.40 White Smooth

5. Zone Coordinate
Non-peak hour
reading (dB)
Peak hour
reading (dB)
E
D1 61 70
D2 65 72
E1 62 69
E2 79 74
F1 64 70
F2 62 71
G1 64 78
G2 62 68
Highest reading 79 78
Lowest reading 61 68
Zone Coordinate
Non-peak hour
reading (dB)
Peak hour
reading (dB)
F
C1 62 67
C2 64 69
C3 62 70
C4 64 72
C5 60 76
C6 62 76
C7 61 72
Highest reading 64 76
Lowest reading 60 67
Zone Category Material Absorption Coefficient Colour Surface
Texture
500Hz 2000Hz 4000Hz
A, B, D
Wall Painted Concrete Wall 0.06 0.09 0.08 Grey Rough
-
Adults per
person
standing
0.42 0.42 0.42 - -