building science psali report
TRANSCRIPT
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SCHOOL OF ARCHITECTURE, BUILDING AND DESIGN
Centre for Architecture Studies in Southeast Asia (MASSA)
Bachelor of Science (Honours) in Architecture
BUILDING SCIENCE II (ARC 3413 / BLD 61303)
PROJECT 2: Integration Project
Name: Tan Sheau Hui
Student ID: 0319235
Tutor: Ar Edwin Chan
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TABLE OF CONTENT
1.0 Introduction 3
2.0 Site Analysis 4
3.0 Overall Floor Plans 6
4.0 Space A Analysis – Multipurpose Area 9
5.0 Space B Analysis – Staff Office 15
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1.0 INTRODUCTION
Project: Jalan TAR Infill Community Library
Project location: 3.1536° N, 101.6964° E
Area: 1300 m2
This integration project is carried out with Design Studio V project of an urban infill community
library placed in Jalan TAR. It sits in between a (Coliseum Café) 2 storey shophouse and (Wisma
Harmant) a high rise office building.
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2.0 SITE ANALYSIS
Due to the site location in between two existing blocks, openings are designed mostly on the front and
back façade, which face the South east and Northwest respectively.
Front façade facing the east sun is treated with louvres shades fixed on glass panels to reduce glare
but still maintaining the penetration of sunlight for the interior spaces.
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To allow more lights into the narrow building, southwest elevation are also placed with several
windows. This is when the building reaches the second floor, where it is above the roof level of the
neighbouring shop lot.
Diagram indicates the 2 spaces chosen.
Multi purpose area is analysed on the daylight because of its maximum sunlight received
while staff office is analysed on its artificial lighting because of the minimum sunlight
received.
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3.0
OVERALL
FLOOR
PLANS
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8
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4.0 SPACE A ANALYSIS
Chosen Space: Multi purpose area
The multi purpose area is located at the second floor of the library. It is a space that serve
several purposes, which is used as reading area on the common days and as a space for events
or talk show occasionally.
This east oriented space receive sufficient daylight, with light shelves controlling the glare.
Artificial lightings are applied to better control the lighting experiences throughout the day.
Daylighting Analysis
𝐷𝐹 =𝑊
𝐴×
𝑇𝜃
1 − 𝑅
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Determine total surface area
A= (2 × 28) + (2 × 28.7) + (2 × 16.4)
A= 146.2 m2
T= 0.6
R= 0.5
𝜃= 45o
Determine DF
𝐷𝐹 =9
146.2×0.6(45)
1 − 0.5
DF = 3.32%
Determine Internal Illuminance
𝐸𝑖
20000× 100% = 3.32%
Ei = 664 lux
Light Contour
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The standard lux level for a multi purpose area is required to be at 500 lux as stated in
MS1525. However, the daylight analysis result is identified as 664 lux, slightly higher than
the requirement. Hence, glare control need to be applied.
The daylight factor is identified as 3.32%, which falls under the category of good daylight
distribution.
Artificial Lighting Analysis
Type of Fixture Track Lighting
Type of Light Bulb
Head Type Pendant
Material of Fixture Satin Nickel
Light Bulb Type Included Integrated LED
Light Output 2640 lumen
Wattage Range (W) 100
Colour Rendering Index 80
Colour Temperature, K 3000
Colour Designation Warm white
Connection Type Hardwired
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Room dimension L = 8.3m , W = 6.5m
Total floor area 53.95 m2
Ceiling Height 4 m
Height of luminaires 4 m
Height of working plane 1 m
Mounting height (Hm) 4 – 1 = 3m
Standard Illumination required
according to MS1525
500 lux
Reflectance factor Ceiling (white plastered ceiling) = 0.7
Wall (white painted wall) = 0.5
Working plane (hardwood) = 0.1
Room Index (K) 𝑅𝐼 =
𝐿 ×𝑊
𝐻𝑚 × (𝐿 +𝑊)
RI = (8.3 × 6.5) ÷ [3 × (8.3 + 6.5)]
RI = 0.5
Utilization factor, UF 0.5
Maintenance factor, MF 0.8 (standard)
Number of fittings required, N 𝑁 =
𝐸 × 𝐴
𝐹 × 𝑈𝐹 ×𝑀𝐹
N = (500 × 54) ÷ (2640 × 0.5 × 0.8)
N = 25.6
Hence, N = 26
Spacing to height ratio, SHR
𝑆𝐻𝑅 =1
𝐻𝑚×√
𝐴
𝑁× 𝐻𝑚
𝑆𝐻𝑅 =1
3× √
54
25× 3
SHR = 1.47m
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Fitting Layout
(minimum spacing required)
Fitting required along 8.3m wall,
8.3/1.47 = 5.6 ~ 6 rows
Number of lamps in each row,
26/6 = 4.3 ~ 5 lamps
Spacing required for 8.3m wall,
8.3/6 = 1.38m
Spacing required for 6.5m wall,
6.5/5 = 1.3m
Lighting Fittings Spacing Diagram
Due to the function of the space serving for talk show occasionally, the lighting are arranged
based on rows of seats and staircase. Row 1 to 4 are placed above seatings, row 5 & 6 are for
the front stage while A, B & C are to lit up the way for visitors and staff.
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DAY AND NIGHT
During the day where the weather is fine, lighting are switched off as the area receive
sufficient daylight.
During the night or when weather is poor, lighting are switched on by row according to the
needs.
Light Contour
Diagram shows when all lights are turned on in the area. It is evenly lit up for excellent
experience for activities.
Diagram shows when only the lights at the stairs and front stage are turned on for
presentation.
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5.0 SPACE B ANALYSIS
Chosen space: Staff office
The staff office is located at the fourth or top floor of the library. It is an enclosed working
room for the staffs of the library.
The space receives minimal daylight, with casement windows placed close to the working
area. Artificial lightings are applied to enhance the staff experience working on computers
throughout the day.
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Artificial Lighting Analysis
Type of Fixture Flush Mount Ceiling Light
Type of Light Bulb
Material of Fixture Aluminium
Light Bulb Type Included Integrated LED
Light Output 4000 lumen (50,000 hour average life)
Wattage Range (W) 64
Colour Rendering Index 82
Colour Temperature, K 4000
Colour Designation Bright white
Room dimension L = 7m , W = 4.1m
Total floor area 28.7 m2
Ceiling Height 4 m
Height of luminaires 4 m
Height of working plane 1 m
Mounting height (Hm) 4 – 1 = 3m
Standard Illumination required
according to MS1525
300 lux
Reflectance factor Ceiling (white plastered ceiling) = 0.7
Wall (white painted wall) = 0.5
Working plane (hardwood) = 0.1
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Room Index (K) 𝑅𝐼 =
𝐿 ×𝑊
𝐻𝑚 × (𝐿 +𝑊)
RI = (7 × 4.1) ÷ (3 × 7 + 4.1)
RI = 0.86
Utilization factor, UF 0.45
Maintenance factor, MF 0.8 (standard)
Number of fittings required, N 𝑁 =
𝐸 × 𝐴
𝐹 × 𝑈𝐹 ×𝑀𝐹
N = (300 × 29) ÷ (4000 × 0.45 × 0.8)
N = 6.04
Hence, N = 7
Spacing to height ratio, SHR
𝑆𝐻𝑅 =1
𝐻𝑚×√
𝐴
𝑁× 𝐻𝑚
𝑆𝐻𝑅 =1
3× √
29
7× 3
SHR = 2.04m
Fitting Layout
(minimum spacing required)
Fitting required along 4.1m wall,
4.1/2.04 = 2 ~ 2 rows
Number of lamps in each row,
7/2 = 3.5 ~ 4 lamps
Spacing required for 7m wall,
7/4 = 1.75m
Spacing required for 4.1m wall,
4.1/4 = 1.03m
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Lighting Fitting Spacing Diagram
The number of lighting required from the calculation is suggested to be 7 units. A 3 x 3 grid
arrangement is designed for the staff office.
DAY AND NIGHT
During the day, due to the fair amount of daylight received, the lighting are required to be
switched on. When weather is good, the working area receive enough daylight. Only row 2
need to be switched on.
During the night, all of the lighting needed to be switched on to achieve a good working
experience.
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Light Contour
Analysis shows that on a normal day, staff office receive minimal daylight, with an average
number of 250 lux only.
Only worktable obtains daylight for a certain of hours.
However, MS1525 standard requires a general office to be at least 300 lux. Hence, artificial
lighting is implemented throughout the day.
After the proper lighting is arranged, the office is evenly lit up when all lights are turned on.
For certain time of the day when daylight is received on worktable, only row 2 is switched
on. Diagram shows the light contour of the time.