This document analyzes the lighting for two spaces in the Kajang Art Centre: a therapy and counseling room on the first floor and a dance studio on the second floor. For each space, it calculates the daylight factor and determines the artificial lighting requirements through lumen method calculations. For the therapy room, 25 LED pendant lights spaced no more than 2.2m apart are required. For the dance studio, 43 LED recessed downlights spaced no more than 5.2m apart are needed. Proper lighting is analyzed to allow efficient use of both spaces.

1. School of Architecture, Building & Design
Centre For Modern Architecture Studies in Southeast Asia
Bachelor of Science (Honours) in Architecture
Building Science 2 (BLD 61303)
Lighting Analysis
Ong Yi Teng (Crystal) 0326486
Tutor: Mr. Edwin

2. Content
1.0 Floor Plans
2.0 Selection of Space
3.0 Therapy and Counseling room
1.1 Daylight Factor Calculation
1.2 Artificial Lighting Analysis
1.3 PSALI Application
4.0 Dance Studio
2.1 Daylight Calculation
2.2 Artificial Lighting Analysis
2.3 Lighting Simulation Analysis

3. Floor Plans
Ground floor plan
Scale 1:200
First floor plan
Scale 1:200

4. Floor Plans
Second floor plan
Scale 1:200
Third floor plan
Scale 1:200

5. Selection of space
First floor plan
Second floor plan
Dance Studio
Therapy and
counselling room
These two spaces are selected for the lighting analysis of Kajang Art Centre. They are
located at the first and second floor of Kajang Art Centre. Both spaces required
artificial lightings during the night and gloomy days in order to allow the users to carry
out their activities efficiently.

6. Space 1 - Therapy and counselling room
Space 2 - Dance Studio

7. Daylight Factor Calculation
Space A : Therapy and Counselling Room
Daylight Contour
Area of windows (W, m2
) L = 2m
H = 2m
2mx2m = 4m
4m x 4 = 16
Total area of internal surfaces (A, m2
) (7.7 x 4.2) x 2 = 64.68
(7.7 X 3) x 2 = 46.2
(4.2 x 3) x 2= 25.2
64.68 + 46.2 + 25.2 = 136.08
Glass transmittance corrected for dirt (T) 0.6 (double glazed window in clean
environment)
Visible sky angle in degrees from centre
of the window
43
Average reflectance of area (R) 0.5
Average Daylight Factor Calculation
Average DF = 0.4947 x 51.6
= 6.06 %

8. Lighting Fixtures Properties
Type LED Pendant Light
Supplier IKEA
Fixture Material Powder Coated Steel
Lighting Distribution Direct Distribution
Wattage range (W) 15
Luminous Flux (lm) 1500
Colour Temperature 2700k, warm white
Room Index Calculation
Room Dimension (m2
) L= 7.7, W=4.2
Height of Ceiling (m) 3
Height of Working Plan (m) 0.8
Luminous flux of lighting (F/m) 1500
Height of luminaires (m) 3
Mounting Height (Hm
, m) 3 - 0.8 = 2.2
IES Standard illumination level 500
RI = 7.7 x 4.2 / ( 2.2 x (7.7+4.2))
= 32.34 / 26.18
= 1.24
Artificial Lighting Analysis

9. Lumen Method Calculation
Reflectance Factor Ceiling = 0.7
Wall = 0.5
Floor = 0.3
Utilization Factor (UF) 0.55 (Based on UF table)
Maintenance Factor (MF) 0.8 (Standard)
Room Material Reflectance Value
White Plasterboard (Ceiling)
: 0.7
White Brick Wall (Wall) : 0.5 Timber Flooring (Floor) : 0.3

10. Number of Fittings Required
N = 500 x 32.34 / (1500 x 0.55 x 0.8)
= 16170 / 660
= 24.5
N = 25 lamps
SMax
= 1.0 x 2.2
= 2.2 m
Therefore, distance between luminaries must not be more than 2.2 m.
Fittings layout in Space A
1149.8
1549.8
1149.8

11. Daylight Factor Calculation
Space B : Dance Studio
Daylight Contour
Area of windows (W, m2
) L = 1.5m
H = 1.5m
1.5mx1.5m = 2.25m2
2.25m2
x 6 = 13.5
Total area of internal surfaces (A, m2
) (10.1 x 6.1) x 2 = 123.22
(10.1 X 6) x 2 = 121.2
(6.1 x 6) x 2 = 73.2
123.22 + 121.2 + 73.2 = 317.62
Glass transmittance corrected for dirt (T) 0.6 (double glazed window in clean
environment)
Visible sky angle in degrees from centre
of the window
63
Average reflectance of area (R) 0.5
Average Daylight Factor Calculation
Average DF = 0.4925 x 75.6
= 3.21 %

12. Lighting Fixtures Properties
Type LED Wireless Recessed
Downlight
Luminous Flux (lm) 1200
Colour Temperature 3500, Warm White
Wattage range (W) 10
Colour Rendering Index 80
Room Index Calculation
Room Dimension (m2
) L= 10, W= 6.1
Height of Ceiling (m) 6
Height of Working Plan (m) 0.8
Luminous flux of lighting (F/m) 1200
Height of luminaires (m) 6
Mounting Height (Hm
, m) 6-0.8 = 5.2
IES Standard illumination level 300
Artificial Lighting Analysis
Space B : Dance Studio
RI = 10 x 6.1 / ( 5.2 x (10+6.1))
= 61 / 83.72
= 0.73
LED recessed downlight are much more energy efficient compared to the traditional
halogen bulbs. The power used in LED lights are much more lesser than halogen
bulbs, while they both produced the same amount of light.

13. Lumen Method Calculation
Reflectance Factor Ceiling = 0.7
Wall = 0.5
Floor = 0.3
Utilization Factor (UF) 0.44 (Based on UF table)
Maintenance Factor (MF) 0.8 (Standard)
Room Material Reflectance Value
White Plasterboard (Ceiling)
: 0.7
White Brick Wall (Wall) : 0.5 Timber Flooring (Floor) : 0.3

14. Number of Fittings Required
N = 300 x 61 / (1200 x 0.44 x 0.8)
= 18300 / 422.4
= 43.32
N = 43 lamps
SMax
= 1.0 x 5.2
= 2.2 m
Therefore, distance between luminaries must not be more than 5.2 m.
Fittings layout in Space B
11151115
1018.5
2037