Integration Project Calculation Report

Building Science 2 [BLD 61303]

Project 2: Integration Project Calculation Report

Tutor

:

Ar. Edwin Yean

Name

:

Lai Sze Chun

ID

:

0313797

Submission Date

:

11 July 2016

1|P age

Lighting Calculation Location

Cafe

Area, m

28 sqm

Height Of Room, m

2.8 m

Distance From Working Plan to 1.6 m Illuminance, m Standard Illuminance, Lux

Restaurant: 200 Lux

Reflection Factors

Wall: 0.50 Ceiling: 0.50

Utilization Factor, UF

0.46

Maintenance Factor, MF

0.80

Type of Light No. Of Light Fixture

NVC Triphosphor Fluorescent Bulb ?

Room Index ��

đ?‘šđ?‘° = đ?‘Żđ?’Ž (đ?‘ł+đ?‘ž) đ?&#x;?đ?&#x;–.đ?&#x;Žđ?&#x;”

= đ?&#x;?.đ?&#x;”(đ?&#x;’.đ?&#x;‘đ?&#x;“+đ?&#x;”.đ?&#x;’đ?&#x;“) = đ?&#x;?. đ?&#x;”đ?&#x;?

Number Of Light Required đ??¸Ă—đ??´

đ?‘ = đ??šĂ—đ?‘ˆđ??šĂ—đ?‘€đ??š 200Ă—28.06

= 2500Ă—0.46Ă—0.8

2|P age

= 6.1 =7

= 7 light required Maximum

Horizontal

Spacing S max = 1.5 x Hm

Between Fitting = 1.5 Ă— 1.6 = 2.4 đ?‘š

3|P age

Light Bulb Used Wiselite T3 Half Spiral Type Compact Fluorescent Lamps - [ESL/MH-15W]

Half Spiral Compact Fluorescent Lamps

Type of Light

Artificial Light

Type(s) of fixtures

Pendant Light

Type of luminaries

Warm white light

Power (W)

15

Voltage (v)

180-260

Luminous Flux (lm)

2500

Colour temperature (K)

2700

Colour rendering index (Ra)

80

Average lifetime (hrs)

8000

Lumen maintenance 2000h (%)

85

4|P age

NVC Triphosphor T5 Fluorescent Tube-HE [YZ28-T5/HE]

Fixture: Hanging Light

NVC Triphosphor Fluorescent Bulb Type of Light

Artificial Light

Type(s) of fixtures

Hanging light

Type of luminaries

Warm light

Power (W)

28

Luminous Flux (lm)

2500

Colour temperature (K)

2700

Colour rendering index (Ra)

82

Average lifetime (hrs)

10000

5|P age

Acoustic Calculation Sound reduction index Sound reduction index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator.

Sound reduction index formula: đ?‘ž

đ??’đ??‘đ??ˆ = đ?&#x;?đ?&#x;Ž đ??Ľđ??¨đ?? (đ?‘žđ?’Š ) dB đ?’•

Where, SRI= Sound Reduction Index (dB) Wi = Sound power incident on one side of a sound barrier (W) Wt= Sound power transmitted into the air on the side of the partition (W)

6|P age

Example on Calculation (Sound Reduction Index):

SRI = 10 log10

1 �

For door: 28 = 10 log10

1 � 1

Antilog 2.8 = � 1

T = 6.31 Ă— 102 đ?‘‡đ?‘‘đ?‘œđ?‘œđ?‘&#x; = 1.585 Ă— 10−3

For window : 26 = 10 log10

1 �

đ?‘‡đ?‘¤đ?‘–đ?‘›đ?‘‘đ?‘œđ?‘¤ = 2.512 Ă— 10−3

For wall: 1

42 = 10 log10 đ?‘‡ đ?‘‡đ?‘¤đ?‘Žđ?‘™đ?‘™ = 6.310 Ă— 10−5

đ?‘‡đ?‘œđ?‘Łđ?‘’đ?‘&#x;đ?‘Žđ?‘™đ?‘™ =

(2 Ă— 1.585 Ă— 10−3 )+(2.4 Ă— 2.512 Ă— 10−3 )+(15.6 Ă— 6.31 Ă— 10−5) 2 + 2.4 + 15.6

= 5.087 Ă— 10−4

1

đ?‘†đ?‘…đ??źđ?‘œđ?‘Łđ?‘’đ?‘&#x;đ?‘Žđ?‘™đ?‘™ = 10 log 5.087 Ă— 10−4 = 10 log 1.958 Ă— 103 = 32.9 dB

7|P age

All the formulas was typed into Microsoft Excel and the result are shown below.

8|P age

Reverberation Reverberation, in terms of psychoacoustics, is the interpretation of the persistence of sound after a sound is produced. Reverberation is frequency dependent.

Reverberation Time Formula: đ??“ =

đ?&#x;Ž. đ?&#x;?đ?&#x;”đ?&#x;?đ?‘˝ đ?‘¨

Where, T is the reverberation time in seconds V is the room volume in m3 A is the absorption coefficient

Example on Calculation (Reverberation Time):

Total room absorption = A = �1 �1 + �2 �2 + �3 �3 + �4 �4 ‌‌.

Where, S is the surface area of material in m2 a is the absorption coefficient

đ??‘đ??“ =

đ?&#x;Ž. đ?&#x;?đ?&#x;”đ?‘˝ đ?‘¨

Where, T is the reverberation time in seconds V is the room volume in m3 A is the absorption coefficient

đ??“ =

đ?&#x;Ž. đ?&#x;?đ?&#x;”(đ?&#x;?đ?&#x;•đ?&#x;?đ?&#x;–) đ?&#x;?đ?&#x;”đ?&#x;Ž(đ?&#x;Ž. đ?&#x;?đ?&#x;“) + đ?&#x;?đ?&#x;”đ?&#x;Ž(đ?&#x;Ž. đ?&#x;Žđ?&#x;?) + đ?&#x;?đ?&#x;Žđ?&#x;’(đ?&#x;Ž. đ?&#x;Žđ?&#x;?) + đ?&#x;?đ?&#x;Žđ?&#x;Ž(đ?&#x;Ž. đ?&#x;’đ?&#x;”)

đ??‘đ??“ = đ?&#x;?. đ?&#x;—đ?&#x;”đ??Ź 9|P age

All the formulas was typed into Microsoft Excel and the result are shown below.

10 | P a g e