Building Science Project 2
- 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