This document discusses shading devices and their use in architecture in Jaisalmer, India. It defines shading devices as purpose-built structures that protect from sunlight and natural light. The document describes different types of shading devices, including vertical, horizontal, and egg-crate devices. It also discusses the climate and location of Jaisalmer and how structures there utilize features like dense clustering, orientation, and courtyards to provide natural cooling without electricity. Specific architectural examples from Jaisalmer like Nathmalji Haveli are also summarized, highlighting shading elements like jharokhas, chatris, and chajjas.

1. SHADING DEVICES..!!!
PREPARED BY:
PREKSHA GIRIA

2. CLIMAToLOGY…
• DEFINATION : Study of climatic elements how
they are behaving on us and how to be benefited
by these climatic parameters , how to protect
from their adverse effect.
• The major steps of architecture climatology are:
Climatology- study of climatic elements
Biology- study of human comfort level with respect
to climatology
Technology –creating of built environment
architecture.

3. Shading devices:
• Defination : Shading devices are the purpose
built devices to protect from the sunight , form
natural light or screening them from view.
Shading devices can form a part of façade or can
be mounted inside the building , they can be fix
or operable.
• Types :
Vertical devices
Horizontal devices
Egg-crate devices

4. Shading devices
Left side top:
alumunium
architecture sun
shade, Left side
down : vertical
louvers,Right side
top: egg-crate
,Right side down :
horizontal devices

5. .

6. Azumith angle
• The angle also known as “bearing angle” is
the angle of sun’s projection onto the ground
relative to south.

7. Sun path
• Sun path refers to the apparent significant
seasonal and hourly positional changes of the
sun as the earth rotates and orbits around the
sun.

8. JAISALMER

9. CLIMATE & LOCATION
• Location : Jaisalmer ,Rajasthan ,India
• Longitude: 75◦55’
• Latitude : 26◦55’
• Altitude: 241.7m above mean sea level.
• Area : 5.1 sq km
District Jaisalmer has a very dry climate with very
hot summer ; a cold winter and sparse rain

12. Sun path of jaisalmer

13. Natural cooling system of jaisalmer
• Dense clustering of
buildings
• Sun control through
orientation and
structural projections
• Cooling of sunlit
surfaces by using fins
• Massive construction
for roofs and walls
• Courtyards and other
air ducts for
ventellation.
Plan of
jaisalmer

14. Plan middle income houses in jaisalmer
• This type of houses have
two or three storey
structures and can be
considered as the typical
houses of jaisalmer , these
have additional rooms and
has a balcony projecting on
to the street.

15. Plan of small houses in jaisalmer
Simple houses comprises of a room , verndah and a courtyard.

16. Streets of jaisalmer
• There are major strrets
oriented almost E-W and
minor streets are right
angle to these. This
compact structure of the
housing doesn’t allow
the sun rays to penetrate
, and also serve as device
of shading.

17. Nathmalji havelli

18. Nathmalji haveli
• Constructed by two
architect brothers in
19th century, has a
symmetrical pattern
as left side is
constructed by one
and right by the
other.

19. Consteruction of roof section of
haveli.
traditional method is to lay closely
spaced timber beams ( and cover
them with a layer of reed or
grass matting and a
thick layer (0.45 to 0.60m) of earth
on top. Because of the
difficulty of finding timber in the
desert, in some later houses
the timber stone slabs have
replaced beams. In all cases the
• roof and floor
are finished only with mud plaster.

20. Details of curved panel
• The section and the
elevation of the
curved panel in the
wall, which acts as
an shading device
and doesn’t allows
the rays of sun .

21. Air ducts
• The picture shows
the wind circulation
in the airduct of the
havelli, which is the
method to keep the
haveli’s cool.

22. • Articulated façade of haveli • In Jaisalmer buildings, a number
of interconnected verticalor
ventilation, which serve as a
shade.

23. Shading device in haveli
• Nathmalji Haveli • JHAROKHAS : ( a type of
over hanging balcony)
• CHATRI’S : ( elevated,
dome shaped pavillions )
• CHAJJAS : ( projecting
eaves or cover usually
supported on large
brackets)
• JALIS : ( perforated stone
or latticed screen used for
ventellation )

24. CURVED
PANELS
COURTYARDS
CHAJJE
JHAROKHE

25. Thank you…!!!!