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1. BUILDING SCIENCE 2 [BLD 61303 / ARC 3413]
PROJECT 2: Integration Project
PETALING STREET
COMMUNITY LIBRARY
NAME: EUNICE CHAN YU MING
STUDENT ID: 0315729
TUTOR: MR SIVA

2. 2
TABLE OF CONTENT
1.0 Graffiti Wall Painting Area
1.1 Daylight Factor Analysis ................................................................................................ 3-5
1.2 Artificial Lighting Proposal.............................................................................................. 6-8
1.3 PSALI (Permanent Supplementary Artificial Light of Interiors) ..........................................9
2.0 Study Lounge
1.1 Daylight Factor Analysis ............................................................................................ 10-11
1.2 Artificial Lighting Proposal.......................................................................................... 12-14
1.3 PSALI (Permanent Supplementary Artificial Light of Interiors) ........................................15

3. 3
1.0 Graffiti Wall Painting Area
1.1 Daylight Factor Analysis
Daylight Factor is the ratio between the actual illuminance at a point inside a room and
the illuminance possible from an unobstructed hemisphere of the same sky.
DF = (
𝐸𝑖
𝐸 𝑜
) x 100
Where
DF = Daylight factor at a chosen reference point in the room (percent)
𝐸𝑖 = Illuminance at the reference point (lx)
𝐸𝑜 = Illiminance at the point if the sky was unobstructed (lx)
Table 1 Recommended Daylight Factor by MS1525
Zone DF, % Distribution
Very Bright >6 Very bright with thermal & glare problem
Bright 3~6 Good
Average 1~3 Fair
Dark 0~1 Poor
Natural Illumination
Illuminance Example
120,000 lux Brightest sunlight
110,000 lux Bright sunlight
20,000 lux Shaded illuminated byentire clear blue sky
1000-200 lux Typical overcast day, midday
< 200 lux Extreme of darkest storm clouds, midday
400 lux Sunrise or sunset on clear day
40 lux Fullyovercast, sunset/ sunrise
< 1 lux Extreme of darkest storm clouds, sunset/ sunrise

4. 4
Graffiti Wall Painting Area
The selected area is the Graffiti Wall Painting Area on the first floor, located at the rear of the
building facing the back lane. The floor height of this space is 3.3 meters. This space aims to
provide maximum day lighting during the day.
Figure 1: First Floor Plan indicating the location ofthe workshop
Floor Area (𝒎 𝟐
) 200 𝒎 𝟐
Area of opening exposed to sunlight
(𝒎 𝟐
)
Parameter: (1.4m x 5) + 12m = 19m
Height: 3.3m
Area: (1.4m x 3.3m) x 5 = 23.1𝑚2
19m x 3.3m = 62.7𝑚2
23.1𝑚2
+ 62.7𝑚2
= 85.8𝒎 𝟐
Daylight Factor, DF =
85.8 𝑚2
196.92 𝑚2 x 100%
= 42.9% x 0.1
= 4.29%

5. 5
External = 20 000 lux (Clear Sky)
DF =
𝐸𝑖
𝐸 𝑜
x 100%
4.29% =
𝐸𝑖
20000
x 100%
𝐸𝑖 = 858 lux
Figure 2: Daylight contour ofGraffiti Painting Area
The graffiti painting room has a daylight factor of 4.29% and natural illumination of 858 lux.
Based on the requirement of Malaysia Standard 1525, the distribution of daylight factor of this
space is good, however, this space has an illumination level of 858 lux, and it has exceeded the
MS 1525 standard requirement, which is 300.
Hence, this particular area is designed with openings of a row of wooden sliding shutter. The
sliding shutters are designed to maximize natural daylight into the space and can be operated
manually when the user feels discomfort of the glare.
Figure 3: Rear Elevation showing façade design (wooden sliding shutter) ofthe community library

6. 6
1.2 Artificial Lighting Proposal
Artificial lighting is important in this area in order to produce a comfortable vision for painters
during night time. According to the study Room Illumination Level, 2016 and MS 1525, the
standard lux level for an exhibits that are insensitive to light is 300.
Fixtures Properties
Types of Fixture
3in LED Light Kit
Figure 4: LED light
Power Method Hardwire
Wattage 20
Lumens 2000lm
Kelvin Color Temperature 3000K
Color Temperature Warm White
Width x Height x Length (m) 0.14 x 0.12 x 0.32

7. 7
Lumen Method Calculation
Dimension of room (L x W) 10m x 20m
Floor Area (A) 200𝑚2
Height of Ceiling (m) 3.3m
Lumen (lux) 365lm
Height of Luminaire (m) 3.3
Height of Work Level (m) 0.8
Mounting Height (Hm) 2.5
Reflection Factor Ceiling: 0.7
Wall: 0.5
Floor: 0.2
Room Index/RI (K)
(𝑳 𝒙 𝑾)
( 𝑳 + 𝑾) 𝒙 𝒉 𝒎
(10𝑚 𝑥 20𝑚)
(10𝑚 + 20𝑚) 𝑥 2.5𝑚
=2.67
Utilization Factor (UF) 0.65
Maintenance Factor (MF) 0.8 (standard)
Number of lamp required
N =
𝑬 𝒙 𝑨
𝑭 𝒙 𝑼𝑭 𝒙 𝑴𝑭
N =
300 𝑥 200 𝑚2
365 𝑙𝑚 𝑥 0.65 𝑥 0.8
= 57.69
= 58 bulbs
Spacing to height ratio (SHR)
SHR =
𝟏
𝑯 𝒎
√
𝑨
𝑵
SHR =
1
2.5𝑚
√
200 𝑚2
58
= 0.74
SHR =
𝑆
2.5𝑚
= 0.74
S = 1.85
Fitting Layout Fitting Required along 10m and 20m wall
10𝑚
1.85𝑚
= 5.4
20𝑚
1.85𝑚
= 10.81
≈ 5 ≈ 11
Therefore, 5 x 11= 55 bulbs (less than 58 bulbs)
To achieved the recommended MS 1525 Painting
Area Illumination Level of 300lux
x- spacing required for 20m wall is
20
11
= 1.8m
y- spacing required for 10m wall is
10
5
= 2m

8. 8
Light Fitting Layout
Figure 5: Proposed luminaires fitting layout
In a nutshell, the graffiti painting area is arranged with 11 rows of 5 LED light to archive the
requirement of 300 lux as stated in MS1525, with the sufficient level of illumination, it allows
user to have better visual experience and paint comfortably during night time.

9. 9
1.3 PSALI (Permanent Supplementary Artificial Light of Interiors)
Figure 6: Proposed luminaires fitting layout with switch arrangement
Based on the calculation and light contour analysis, the painting room has a good day lighting
factor of 4.29%, although this space is slightly bigger than the other space, it can still receive
sufficient amount of daylight from the big and long opening. Hence, the calculation shows that
the area requires total of 55 luminaires.
The painting room can be controlled using 3 switches. Switch 1 and switch 3 control the first and
last row that are facing the front window as well as glazing that are facing the open internal
courtyard simultaneously. Both of the switches are nearer towards the daylight, therefore Switch
1 and 3 can be switch off individually during daytime to savecost. Switch 2 controls allthree rows
in the middle that are often dimmer even during daytime.

10. 10
2.0 Study Lounge
2.1 Daylight Factor Analysis
The selected area is study lounge located at the front part of the second floor. The floor height
of this area is 3.3 meters, this space fully exposed and receive direct penetration sunlight during
daytime.
Figure 7: Second floor plan indicating the location ofStudy Lounge
Floor Area (𝒎 𝟐
) 92.42 𝒎 𝟐
Area of opening exposed to sunlight
(𝒎 𝟐
)
Parameter: (1.4m x 5) = 7m
Height: 3.3m
Area: 7m x 3.3m = 23.1𝒎 𝟐
Daylight Factor, DF =
23.1 𝑚2
92.42 𝑚2 x 100%
= 25% x 0.1
= 2.5%

11. 11
External = 20 000 lux (Clear Sky)
DF =
𝐸𝑖
𝐸 𝑜
x 100%
2.5% =
𝐸𝑖
20000
x 100%
𝐸𝑖 = 500 lux
Figure 8: Daylight contour ofStudy Lounge
The study lounge has a daylight factor of 2.5% after calculation. Based on the calculation, the
daylight factor of this area is average as the optimum zone is around 3 to 6%. However, the
natural illuminance level obtained is 500 lux which is slightly higher than the standard values.
Opening should be distributed evenly as the front part of this area shows a huge contrast as
compared to the back which is too dim. Furthermore, diffuse roof can be applied to this area to
avoid sunlight from directly shone into the study lounge.
Figure 9: Roofdesign to diffuse direct sunlight

12. 12
2.2 Artificial Lighting Proposal
It is essential to have efficient light sources in a reading area to ensure the visual quality of user.
According to the study Room Illumination Level, 2016 and MS 1525, the required lux level for a
study area is 300-500.
Fixtures Properties
Types of Fixture
LED Mount Light Fixture
Figure 10: LED light
Power Method Hardwire
Wattage 12.5
Lumens 964lm
Kelvin Color Temperature 2700K
Colour Temperature Warm White
Colour Rendering Index 90
Width x Height 0.25 x 0.03

13. 13
Lumen Method Calculation
Dimension of room (L x W) 16m x 5.776m
Floor Area (A) 92.42𝑚2
Height of Ceiling (m) 3.3m
Lumen (lux) 964lm
Height of Luminaire (m) 3.3
Height of Work Level (m) 0.8
Mounting Height (Hm) 2.5
Reflection Factor Ceiling: 0.7
Wall: 0.5
Floor: 0.2
Room Index/RI (K)
(𝑳 𝒙 𝑾)
( 𝑳 + 𝑾) 𝒙 𝒉 𝒎
(16𝑚 𝑥 5.776𝑚)
(16𝑚 + 5.776𝑚) 𝑥 2.5𝑚
=1.7
Utilization Factor (UF) 0.62
Maintenance Factor (MF) 0.8 (standard)
Number of lamp required
N =
𝑬 𝒙 𝑨
𝑭 𝒙 𝑼𝑭 𝒙 𝑴𝑭
N =
300 𝑥 92.42𝑚2
964 𝑙𝑚 𝑥 0.62 𝑥 0.8
= 57.99
= 58 bulbs
Spacing to height ratio (SHR)
SHR =
𝟏
𝑯 𝒎
√
𝑨
𝑵
SHR =
1
2.5𝑚
√
92.42𝑚2
58
= 0.5
SHR =
𝑆
2.5𝑚
= 0.5
S = 1.25
Fitting Layout Fitting Required along 10m and 20m wall
16𝑚
1.25𝑚
= 12.8
5.776𝑚
1.25𝑚
= 4.6
≈ 13 ≈ 5
Therefore, 13 x 5= 65 bulbs (more than 58 bulbs)
To achieved the recommended MS 1525 study
room’s Illumination Level of 300lux
x- spacing required for 16m wall is
16
13
= 1.2m
y- spacing required for 5.776m wall is
5.776
5
= 1.2m

14. 14
Light Fitting Layout
Figure 11: Proposed luminaires fitting layout
With the aid of the calculationand approximation of the fitting layout, the luminaires of the study
lounge are arranged into 5 rows of 13 LED ceiling mount light, which in total a 65 luminaires to
be installed. This study lounge are able to meet the requirement of 300-500 lux as stated in
MS1525 with the support of the artificial light.

15. 15
2.3 PSALI (Permanent Supplementary Artificial Light of Interiors)
Figure 12: Proposed luminaires fitting layout with switch arrangement for study lounge
Based on the daylight contour above, the study lounge has a bad light distribution throughout
the area, daylight is focused on the front part, and rear of space is dim. Moreover, this space has
an average daylight factor of 2.5%, which mean this space did not receives sufficient daylight
from the opening.
Therefore, by applying the PSALI principles, the luminaries are divided into three switches. It is
straightforward, as switch 1 and switch 2 are in charging of the first two rows, the rest are
controlled by switch 3.
During the day, the light will more likely concentrate at the front of the study lounge, hence,
switch 1 can be turned off whereas switch 2 and 3 can be turned on to illuminate areas that are
dim and further away. Switch 2 can be turn off when daylight is too strong leaving switch 1 to
illuminate the space.