Calculation

Building Science 2 (Arc 3413)Project 2: Integration with Design Studio 5

Lighting & Acoustic Calculation

Name: Nur Aida Ashikin Binti RosdiStudent ID: 0302503

Tutor: Dr. MinaSemester 5

1.0 Lighting Calculations

1.1 Gallery 1

Gallery 1

PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT

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Gallery 1

1.1.1 Artificial Lighting: Lumen Method Calculation of Gallery 1 above 0.9m

Total Floor Area (m2) 142.64

Standard Luminance Required (lux) 300

Assumption of Reflection Glass wall, White Ceiling, Grey Floor= 0.3, 0.5, 0.3

Room Index = _21.059 x 8.997___3.1 x (21.059 + 8.997)

= 2.033

Utilisation Factor 0.49

Maintenance Factor 0.8

1.1.2.1 Proposed Light Fixtures

Tracklight Bulb Used

CT6038-GU24LineVoltage 120V

Front Loaded Gimbal

Essential MV MR16 Alu

Compact adjustable accent lights for a wide range of beam spreads in line voltage lamps.Yoke permanently adjuststo position lamp in any direction. Designed for use on either circuit of Capri combination one or two circuit track.

- Beam Angle: 40D- Luminous Intensity: 500 cd- 1894 Lm- Colour Temperature: 2800K- Colour Rendering Index: 100 Ra8- Lamp Wattage: 50 W

Tracklight Bulb Used

N = __E x A___ F x UF x MF

N = 150 x 142.64_ 1894 x 0.49 x 0.8

N = 28.8 = 29 Lamps


N = 150 x 142.64_ 1894 x 0.49 x 0.8

N = 28.8 = 29 Lamps

Spotlight Bulb Used

6" Incandescent Deep Recessed Housing Essential MV MR16 Alu




N = 150 x 142.64_ 1845 x 0.49 x 0.8

N = 29.5 = 30 Lamps


N = 150 x 142.64_ 1845 x 0.49 x 0.8

N = 29.5 = 30 Lamps

29 spotlight and 30 lamps on track lights with is needed to illuminate the Gallery 2 with 300 lux standard for a gallery.

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1.2 Gallery 2

1.1.2 Artificial Lighting: Lumen Method Calculation of Gallery 2 above 0.9m




Room Index = _21.059 x 8.997___3.1 x (21.059 + 8.997)

= 2.033




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Gallery 2

Gallery 2

1.1.2.1 Proposed Light FixturesTracklight Bulb Used

CT6038-GU24LineVoltage 120V

Front Loaded Gimbal

Essential MV MR16 Alu




N = 150 x 123.65_ 1894 x 0.49 x 0.8

N = 24.9 = 25 Lamps


N = 150 x 123.65_ 1894 x 0.49 x 0.8

N = 24.9 = 25 Lamps

Spotlight Bulb Used

6" Incandescent Deep Recessed Housing Essential MV MR16 Alu




N = 150 x 123.65_ 1845 x 0.49 x 0.8

N = 25.6 = 26 Lamps


N = 150 x 123.65_ 1845 x 0.49 x 0.8

N = 25.6 = 26 Lamps

26 spotlight and 25 lamps on track lights with is needed to illuminate the Gallery 2 with 300 lux standard for a gallery.

1.3 Restaurant

1.3.1 Artificial Lighting: Lumen Method Calculation of Restaurant above 0.8m




Room Index = _10.320 x 6.504___3.2 x (10.320 + 6.504)

= 1.25




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1.1.2.1 Proposed Light FixturesDown Light Bulb Used

40550copper/brass

LED

Luster energy saving bulb 8710163226682

8 W (25 W) E27 cap, Warm white

Available in matt black or lustrous gold color finish, this luminaire is treated with luxurious and high quality finishing and detailing

- Wattage: 20 W- Light effect/finish: Warm White- Light output: 1070 lumen- Color temperature: 2700 K- Color rendering index (CRI): 81


N = 100 x 67.12_ 1070 x 0.41 x 0.8

N = 19.12 = 20 Lamps


N = 100 x 67.12_ 1070 x 0.41 x 0.8

N = 19.12 = 20 Lamps

Track Light Bulb Used

MASTER LEDspot MV

Star's sleek, polished lamps are fully rotatable to any angle for you to instantly add striking accents to your room with its bright focused light. Available in 1, 2, or 4 lamp combinations.

Beam Angle 40 DColour Temperature: 2700 KLuminous Intensity: 600 cdColour rendering index: 80Light Output: 2734


N = 100 x 67.12__ 2734 x 0.41 x 0.8

N = 7.48 = 8 Lamps


N = 100 x 67.12__ 2734 x 0.41 x 0.8

N = 7.48 = 8 Lamps

20 downlight and 2 track lights with 4 lamp combination is needed to illuminate the Restaurant with 200 lux standard for dining area.

2.0 Acoustic Calculations

2.1 Reverberation Time (RT)

2.1.1 Internal Space - Music WorkshopMaterials Absorption

Coefficient at 1000 Hz

Surface Area(m2)

Sa

Plaster (gypsum or lime, on masonary) 0.03 60.51 1.8153

Carpet 0.15 18 2.7

Glazed Tile 0.01 42.51 0.4241

Seats (fabric-upholsterd, empty) 0.88 3 2.64

Seats (fabric-upholsterd, fully occupied) 0.96 5 4.8

Glass Wall 0.03 20 0.6

People 0.46 4 1.84

Acoustic Panels 0.85 39.5 33.575

Concrete Wall 0.02 81.46 1.6292

Total Absorbtion Area = 1.8153 + 2.7 + 0.4241 + 2.64 + 4.8 + 0.6 + 1.84 + 33.575 + 1.629 = 50.02

Volume of Space = 242.04 m3

Reverberation Time = 0.16 x Volume Total Sa

= 0.16 x 242.04 50.02

= 0.78

Standard Table requires a Music Room/Workshop to have a reverberation time of 1.5/s for a clear and crisps sound quality for music recording or jamming.

2.2 External Noise Sound Level Pressure (SPL)Traffic Noise of H.S. Lee Road: 76dB Opposite Trading Activities Noise: 70dB

76 = 10 log ll

1 x 10

Antilog 7.6 = ___ll___ 1 x 10

ll = (3.981 x 10 ) x (1 x 10 ) = 3.918 x 10

70 = 10 log ll

1 x 10

Antilog 7 = ___ll___ 1 x 10

ll = (1 x 10 ) x (1 x 10 ) = 1 x 10

Total Intensities = (3.981 x 10 ) + (1 x 10 ) = 4.981 x 10

Combined SPL = 10 log 4.981 x 10 1 x 10 = 10 x 8.607 = 77dB

Total Intensities = (3.981 x 10 ) + (1 x 10 ) = 4.981 x 10

Combined SPL = 10 log 4.981 x 10 1 x 10 = 10 x 8.607 = 77dB

Calculation above shows the external noise sound pressure level (SPL) of both traffic and trading noise around the site on Jalan Tun H.S. Lee.

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2.3 Sound Reduction Index (SRI)

2.3.1 Music Workshop ( Internal Noise Source) to Outdoor WalkwayBased on the table above, average sound pressure level produced for a Music Workshop/Room is 90 db which considered as internal noise source to the Outdoor Walkway.

The East Wall of the Workshop consist of 5.2 m(square) of Concrete Wall(SRI=42dB) and 15.66 m(square) of glass wall (SRI=26dB)

SRI = 10 log 1 T

TL For Concrete Wall TL for Glass Wall

42 = 10 log 1 T

Antilog 4.2 = 1 T

T = ____1___ 1.585 x 10

T = 6.310 x 10

26 = 10 log 1 T

Antilog 2.6 = 1 T

T = ____1___ 3.98 x 10

T = 2.512 x 10

T overall = (5.2 x 6.309 x 10 ) + ( 15.66 x 2.512 x 10 ) 5.2 + 15.66

= 1.902 x 10

SRI overall = 10 log 10 1 ___ 1.902 x 10

= 10 log 10 525.89

= 27.2 dB

Total noise level transmitted to Outdoor Walkway: 90db - 27.2dB = 63dB

The wall made out of material of glass and concrete reduces 27.2dB of noise to the walkway. 63dB is similar to a busy road and could disturb people using the walkway. Howover, the walkway is only used as a circulation space and surely users would not mind the noise.

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