A case study on the lighting strategies and illumination of a building

1. KEITH MUREITHI ABS211-0005/2019
KELVIN GITONGA ABS211-0002/2019
KEMUNTO NYABOKE ABS211-0013/2019
KEN MWANGI NDUGO ABS211-0278/2019
KEVIN EDWIN MWAMGI ABS211-0021/2018
KIGOTHO FRANCIS MURUGA ABS211-0006/2019
KIOKO SAMUEL MUMO ABS211-0018/2019
KIPROTICH CARLOS ABS211-0043/2019

2.  Grid system,
showing
typical
contours of
the
Instruction
Room at a
working
plane of 0.8
– 0.9 m
above the
finished
floor level.

3.  Grid system,
showing
typical
contours of
the
Exhibition
Hall at a
working
plane of 0.8
– 0.9 m
above the
finished
floor level.

5. N
 The time of study
of this space was
12.15 p.m
 The prevailing
weather
condition was
sunny.

6. N
 The time of study
of this space was
13.20 p.m
 The prevailing
weather
condition was
slightly cloudy.

7. DAYLIGHTING STRATEGIES
The main sources of light acting upon this space are
●direct sunlight
●Diffuse sunlight from the sky
●Reflected light from white facades of surrounding
buildings
The main daylighting strategy used is side lighting,
●door openings
●Window openings

8. WINDOW OPENINGS
• The window openings bring in light
from the exterior to the interior
• The window glazing is sunshield glass
tinted blue
• This glass is the perfect for aesthetic
and energy efficiency. Its solar control
properties help reduce glare, improve
the energy efficiency of spaces and also
reduce heat gain
• The window glazing just lets in enough
light into the space which is in turn
reflected to the space by the white
ceiling, cream painted walls and the
shiny ceramic tiles

9. DOOR OPENINGS
 The door opening is a double door with a
glazed transom .
 It has sunshield glazing glass tinted blue
controlling the amount of light getting in
the space
 The door opening is lit up by the
extensive balcony which it opens to
BALCONY
 This balcony interior walls are painted
white reflecting light into the space
 The door only recieves reflected light
from the white slab above, white walls and
the shiny ceramic tiles
 A photo to the door from the balcony

10. ROOM LIGHTING CONDITIONS – EXHIBITION ROOM
Ceiling finish is white in colour reflecting
a lot of light.
Artificial Lighting has been achieved in the
space by the use of recessed reflector
fluorescent lamp set.
Despite the window glazing being glass tinted
blue, there is sufficient light coming in once the
curtains are drawn.The windows are ceiling to
floor.
There is side lighting from the windows
on either sides of the room.
The floor finish is shiny ceramic tiles that
also bounce of light making the room
bright.
The black seats in the space help to absorb
light minimizing glare

11. ROOM LIGHTING CONDITIONS - INSTRUCTION ROOM
The floor finish is shiny
ceramic tiles that also
bounce of light making the
room bright
Ceiling finish is
white in colour.
The window glazing is
glass tinted blue and
there is sufficient light
coming.There are no
curtains in this space
Artificial Lighting has
been achieved by surface
mounted LED lamp set.
High windows to
bring in more light
from the balcony.
The black seats in the
space help to absorb light
minimizing glare

12. Sun shading devices are broadly categorized into two
main categorized: fixed and mobile devices.
1. FIXED DEVICES
• Balcony
 They are mostly located on the North and
South facades
 The North façade balcony measures
1000mm wide while the South facade
measures 4000mm wide.
 They provide sun sun shading by acting
as an eave to the lower floor, reducing
direct sunlight penetrating the interior
spaces
 Contains white cermanic tiles and paint
that aid in reflection of sunlight reducing
heat gain.
SUN SHADING DEVICES

13. Overhangs
Located on the glass faced
facades on the North and South
side
Protrudes by 1100mm on the
North side and around 4100mm
on the south side
They aid to reduce amount of
direct sunlight penetrating into
the spaces reducing solar heat
gain

14. Tinted windows
 The glass windows and doors
located on the North and South
façade are film coated
 This increases amount of solar
energy reflected thereby
reducing amount of solar
energy transmitted through the
interior spaces
 They aid in reducing glare
providing visual comfort
 It can also be seen to perform
aesthetic functions

15. 2. MOBILE DEVICES
Sheer curtains
 Located on the north and south
windows covering the interior plane
of the window
 Provide sun shading by blocking
penetration of direct sunlight into
the interior spaces reducing heat
gain while also being used for
aesthetic purposes

16.  The spaces discussed above do
receive adequate amount of
sunlight.
 However the following strategies
can be implemented to improve
the daylight quality.
IPIC- INSTRUCTION ROOM 1
 Provide more openings on the left
side.
The louvres provided on this
side of the building do not permit
enough light making the light
experienced in the space seem
unbalanced. Louvres in the space.

17.  Use non-tinted louvres.
In addition to the point above
clear openings will also
provide more light into the
space
 Increase the size of the
openings in the corridor.
The corridor has openings
which even though permits light
would function better if they
were much larger as the
reflected light that would get
into the space via the louvres
will also increase.
 Louvres in the spac

18. IPIC- EXHIBITION HALL 1
 Use of clear windows.
The tinted windows do limit the
amount of sunlight entering the
space.
Using clear windows will have
the positive effect of permitting
more light thus improving the
daylight quality.

19. THE END.