This document analyzes the lighting design for two spaces - a children's area and music listening area - in a community library project. For the children's area on the second floor facing east, daylight factor calculations show good natural lighting between 8am-3pm. Artificial lights are proposed after 3pm to maintain illumination levels. A dual switching system is suggested to control lights based on daylight. For the indoor music area, artificial lights are needed due to limited daylight. Calculations determine 18 downlights are required to meet illumination standards. Dual switching is also proposed to provide different light levels for various music activities.

1. BACHELOR OF SCIENCE (HONS) IN ARCHITECTURE
BUIILDING SCIENCE 2 (ARC 3413)
PROJECT 2 : INTEGRATION PROJECT WITH DESIGN STUDIO 5
JALAN TAR COMMUNITY LIBRARY
NAME : LYNETTE LAW YONG YI
STUDENT ID : 0317761
TUTOR : MR AZIM

2. Project 2 : Integration of Studio V Project – Community Library
Table of Content
1.0 Lighting
1.1 Children area (Space A)
1.2 Daylight analysis
1.3 Artificial lighting proposal
1.4 PSALI scheme
1.5 Music listening area (Space B)
1.6 Artificial lighting proposal
1.7 PSALI scheme
2.0 Reference

3. 1.0 Lighting
1.1 CHILDREN AREA (Space A)
SECOND FLOOR PLAN.

4. The selected studied area is the children area located on the second floor, located at the front of the
building facing east as shown in the second floor plan above. The floor height of this space is 4 meters
and the aim of façade design is to provide maximum daylighting in the morning whereas remain shaded
to reduce glare and discomfort to the children.
Sun path – 8am
Sun path -11am
Sun path – 3pm

5. Zoom in plan and light contour diagram which shows respective time of 8am, 11am and 3pm.
From the daylight contour analysis, it can be identified that light can reach upon the reading area in the
center of children area. The natural light received is relatively higher during the day. Comfortable
lighting conditions can be improved by installing a fabric screen and double glazed windows on the
façade of the building.
According to MS1525, Daylighting factor distribution is as below :
Zone Daylight Factor (%) Distribution
Very bright >6 Too bright with thermal and
glare problems
Bright 3-6 Good
Average 1-3 Fair
Good 0-1 Poor

6. DAYLIGHT FACTOR CALCULATION
𝑊
𝐴
𝑥
𝑇𝜃
1 − 𝑅
W, area of window = 2 (2.3m x 0.8m) + 2(2.4x0.8m) + 2 (1.3m x 5m)
= 20.52 square metre
A, area = 2 ( 4m x 5m ) + 2 ( 4m x 10m ) + 2 ( 5m x 10m )
= 220 square metre
T, glass transmittance corrected for dirt = 0.5 (double glazed glass)
𝜃 , Visible sky angle in degrees from the center of the window = 80 degrees
R, average reflectance of area A = 0.3
20.52
220
𝑥
0.5 𝑥 80
1 − 0.3
= 5.33 %
CONCLUSION
The children area has a daylight factor of 5.33% , based on the requirement of MS 1525, the space is
brightly lit by daylight and good daylight distribution. As the chosen space is a semi open air children
area, artificial illuminance is needed after 3pm according to the light contour , and a double skin façade
is needed to prevent glare and thermal discomfort to the children, as so fabric screen is used on the
front elevation as shown in the section below.

7. 1.3 Artificial Lighting Proposal
Since the children area will operated till after working hours which is approximately until 8pm, artificial
lighting is required ( according to light contour insufficient daylight source after 3pm ) in order for the
community to enjoy the space in a well lit, comfortable condition.
LUMEN METHOD CALCULATION
Type of fixture Recessed LED luminaire
Type of model
PowerBalance RC600B recessed LED luminaire, square
Company Philips
Product dimension Width 0.6m x 0.6m
Lumen (lm) 3100
Watt 26
Color designation Cool white
Dimension of room ( L x W ) 10 x 5.3
Floor area 53 square metre
Height of ceiling 4m
Height of luminaire 4
Height of working plane 1
Mounting height (Hm) 4-1 = 3m
Reflective factors Ceiling (white plastered ceiling) = 0.7
Wall (masonry wall with white paint) = 0.3
Working plane (hardwood) =0.1
Room Index, RI (K) RI =
𝐿 𝑥 𝑊
𝐻𝑚 𝑥 (𝐿+𝑊)
=
53
3 𝑥 ( 10+5.3
= 1.15

8. Utilization factor , UF 0.47
Maintenance factor, MF 0.8
Number of fittings required , N N =
𝐸 𝑥 𝐴
𝐹 𝑥 𝑈𝐹 𝑥 𝑀𝐹
=
400 𝑥 53
3100 𝑥 (0.47 𝑥 0.8 )
= 18.18
= 18
Fittings layout Smax = 1 x Hm
= 1 x 3m
= 3m
Proposed lighting fittings spacing diagram
Light contour of children area with artificial lighting fittings

9. PSALI SCHEME
Based on the calculation and light contour analysis, the total 18 luminaires in the children area can be
controlled by using just two switches. Switch 1 controls the two rows (12 luminaires) facing the façade
and switch 2 controls the following row ( 6 rows ). Reason being the children area will receive a good
daylight distribution of 5.33 % during the day from the façade. Switch 1 can be switch off and switch 2
can be switch on during that period of time so that electrical cost can be saved.

10. 1.5 Music Listening Area ( Space B )
First Floor Plan

11. Artificial Lighting Analysis
Lumen Method Calculation
Type of fixture Coreline slim downlight
Type of model
Product dimension 215 (diameter)
Type of luminous Warm white
Luminous flux (lm) 2000
Power (Watt) 28
Color temperature (K) 3000
Color rendering index 80
Average life rate (hours) 50000
Dimension of room ( L x W ) L = 11m W= 5.2m
Total floor area 57.2 square meter
Height of ceiling 4m
Height of luminaire 4m
Height of working plane 1.5m
Mounting height (Hm) 4 – 1.5 = 2.5m
Standard illumination according to MS1525 300 ( book shelves )
Reflectance Ceiling (white plastered ) = 0.7
Wall (white painted wall) = 0.5
Working plane (hardwood ) = 0.1
Room Index , RI (K) RI =
𝐿 𝑥 𝑊
𝐻𝑚 𝑥 (𝐿+𝑊)
=
57.2
2.5 𝑥 ( 11+5.2 )
= 1.41
Utilization factor , UF 0.59

12. Maintenance factor , MF 0.8
Number of fittings required , N N =
𝐸 𝑥 𝐴
𝐹 𝑥 𝑈𝐹 𝑥 𝑀𝐹
=
300 𝑥 57.2
2000 𝑥 0.59 𝑥 0.8
= 18.17
= 18
Fitting layout Smax = 1 x hm
= 1 x 2.5
= 2.5m
Proposed lighting fittings diagram for Light contour with artificial lighting
music listening area

13. PSALI SCHEME
As the music corner and music listening pod (Music listening area) is located at the center of the
building and facing south, there is insufficient natural daylight source due to its location and no skylight
or void above it. Artificial lighting is incorporated to this situation. Switch 1 controls the 9 luminaires at
the music corner and switch 2 controls the other 9 luminaries at the music listening pod. As some users
prefer a more dim condition when listening to music, different switch controls are designed in this way.
Whereas the music corner with CD racks and book shelves require artificial lighting to lit up the space.

14. 2.0 REFERENCE
Stein, B. (2009). Mechanical and Electrical Equipment for Buildings. New Jersey.
IARUniCamp. (n.a.) Lighting for Libraries. Retrieved 12 July 2017, from
http://www.iar.unicamp.br/lab/luz/ld/Arquitetural/diversos/Lighting%20for%20Libraries.pd
f.
LibraryArchitecture. (n.a.) A Library Architecture Resource. Retrieved 12 July 2017, from
https://libraryarchitecture.wikispaces.com/Natural+Lighting+Design+in+Libraries.
EBP. (n.a.) Light Architecture Daylighting and Artificial Light. Retrieved 12 July 2017,
from http://www.ebp.ch/en/topics/building-technology/light-architecture-daylighting-and-
artificial-light-building-technology.