A report of calculations on lighting design, BSCIENCE II

1. Lighting Design
Park.our House, Kajang Art Centre
CALCULATIONS ON ANALYSIS
BUILDING SCIENCE II BLD 61303
CARMEN CHAN SHEN WEN 0326485
TUTOR : MR EDWIN CHAN

2. Space A : Music Studio

3. Term Working Calculation Answer
Area of windows (W) (7.1 + 6.0 + 5.7 + 6.5) m X 2.1 m 53.13 m2
Total area of internal
surfaces (A)
Area of walls
(5.55 X 6.1) + (2.7 X 10.3) + (2.85 X
6.8) + (2.7 X 4.5) + (2.7 X 4.5) + (2.7 X
3.5) + (7.2 X 5.55) = 142.61 m2
Area of floor and ceiling
(59.76 + 59.76) m2
Total internal surface area
(142.61 + 59.76 + 59.76) m2
262.13 m2
Glass transmittance
corrected for dirt (T)
0.6
Visible sky angle in
degrees from centre of
window (°)
14°
Average reflectance of
Area A (R)
0.5
Average Daylight
Factor
3.4104
According to MS 1525, room
is considered fair.
262.13 (1 - 0.5)
i) Average Daylight Factor (LDF)
Average Daylight Factor formula
W TQ
A
X
(1-R)
53.13 0.6 X 14
X
= 0.203 X 16.8
KFC
14°
Figure 1 : Visible sky angle for music room.

4. Hm X (L + W)
ii) Room Index (RI)
Room Index (RI) formula
L X W
Term Working Calculation Answer
Floor area (m2) 15.6 m2
Mounted Height of
Fitting above Working
Plane (Hm)
2.7 m - 0 m 2.7 m
Reflectance value of
Ceiling, Wall, Floor
Light Coloured Ceiling = 0.8
Medium Grey Wall = 0.5
Light Concrete Floor = 0.1
Room Index (RI) for
Part A
0.63
iia) Part A of space
2.7 X (3.1 + 6.1)
15.6 m2
Term Working Calculation Answer
Floor area (m2) 44.2 m2
Mounted Height of
Fitting above Working
Plane (Hm)
5.55 - 1.27 4.28 m
Reflectance value of
Ceiling, Wall, Floor
Light Coloured Ceiling = 0.8
Medium Grey Wall = 0.5
Light Concrete Floor = 0.1
Room Index (RI) for
Part B
0.78
iib) Part B of space
4.28 X (6.1 + 7.2)
44.2 m2
Figure 2 : Parts of analysis study in Music Studio
*For Hm value, refer to the following page for justification.

5. Term Working Calculation Answer
Total Room Index (RI) 0.63 + 0.78 1.41
Reflectance value of
Ceiling, Wall, Floor
Light Coloured Ceiling = 0.8
Medium Grey Wall = 0.5
Light Concrete Floor = 0.1
Utilisation Factor (UF) Based on UF Table,
If 1.25 = 0.52, then
x = 0.73/1.25
0.58
ii) Room Index (RI)
1.25
iic) Total Room Index and UF Value
0.52
x1.41
=
Figure 3 : Workplane height of Music Studio
Part A Part B

6. F X UF X MF
iii) Lumen Method
Lumen Method formula
E X A
Term Working Calculation Answer
Floor area (m2) (A) 15.6 m2
Illuminance Level
Required (E)
200
Average Luminous Flux
from each lamp (F)
67 X 9 603
Utilisation Factor (UF) 0.58
Maintenance Factor (MF) Standard 0.8
No. of lamps required
(N)
= 11.15
11 lamps
Mounted Height of Fitting
above Working Plane
(Hm)
2.7 m - 0 m 2.7 m
Maximum spacing For filament lamps,
2.7 m X 1.0 m
2.7 m
iiia) Part A of space
N =
603 X 0.58 X 0.8
200 X 15.6

7. Term Working Calculation Answer
Floor area (m2) (A) 44.2 m2
Illuminance Level
Required (E)
200
Average Luminous Flux
from each lamp (F)
67 X 9 603
Utilisation Factor (UF) 0.58
Maintenance Factor (MF) Standard 0.8
No. of lamps required
(N)
= 31.6
32 lamps
Mounted Height of Fitting
above Working Plane
(Hm)
5.55 m - 1.27 m 4.28 m
Maximum spacing For filament lamps,
4.28 m X 1.0 m
4.28 m
iiia) Part B of space
603 X 0.58 X 0.8
200 X 44.2

8. Space B : Practice Studio
Exhibition Hall

9. Shophouse
Term Working Calculation Answer
Area of windows (W) (3.95 X 0.9) + (½ X 0.9 X 1.02) + (6.0 X
2.1) + 51.61
= (2.56 + 0.46 + 12.6 + 51.61) m2
68.23 m2
Total area of internal
surfaces (A)
Area of walls
(88.69 X 2.7) m2 = 239.46 m2
Area of facade ceiling
(28.66 + 24.41 + 10.31 + 31.9) + 51.61
= 146.89 m2
Area of floor
138.1 m2
Total internal surface area
(239.46 + 146.89 + 138.1) m2
524.45 m2
Glass transmittance
corrected for dirt (T)
0.6
Visible sky angle in
degrees from centre of
window (°)
33.8°
Average reflectance of
Area A (R)
0.5
Average Daylight
Factor
5.27
According to MS 1525, room
is considered strongly daylit.
524.45 (1 - 0.5)
i) Average Daylight Factor (LDF)
Average Daylight Factor formula
W TQ
A
X
(1-R)
68.23 0.6 X 33.8
X
= 0.13 X 40.56
33.8°
Figure 4 : Visible sky angle for practice studio.

10. Hm X (L + W)
ii) Room Index (RI)
Room Index (RI) formula
L X W
Term Working Calculation Answer
Floor area (m2) 138.1 m2
Mounted Height of
Fitting above Working
Plane (Hm)
2.7 m - 0 m 2.7 m
Reflectance value of
Ceiling, Wall, Floor
Light Coloured Ceiling = 0.8
Medium Grey Wall = 0.5
Timber Floor = 0.3
Room Index (RI) for
Part A
0.63
Utilisation Factor (UF) Based on UF Table,
If 2.00 = 0.67, then
x = 2/1.31
0.66
iia) Part A of space
2.7 X (16.1 + 10.1)
138.1 m2
1.95
2.00
x
0.67
=
Figure 5 : Workplane height of Practice Studio

11. F X UF X MF
iii) Lumen Method
Lumen Method formula
E X A
Term Working Calculation Answer
Floor area (m2) (A) 138.1 m2
Illuminance Level
Required (E)
300
Average Luminous Flux
from each lamp (F)
12 X 87 1044
Utilisation Factor (UF) 0.66
Maintenance Factor (MF) Standard 0.8
No. of lamps required
(N)
= 75.1
75 lamps
Mounted Height of Fitting
above Working Plane
(Hm)
2.7 m - 0 m 2.7 m
Maximum spacing For LED Tube,
2.7 m X 1.5 m
4.05 m
N =
1044 X 0.66 X 0.8
300 X 138.1