SHADING DEVICES..!!!

PREPARED BY:

PREKSHA GIRIA

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.

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 devicesHorizontal devicesEgg-crate devices

Shading devices

Left side top: alumuniumarchitecture sun shade, Left side down : vertical louvers,Right side top: egg-crate ,Right side down : horizontal devices

.

Azumith angle

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

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.

JAISALMER

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

Sun path of jaisalmer

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

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.

Plan of small houses in jaisalmer

Simple houses comprises of a room , verndah and a courtyard.

Streets of jaisalmer

• There are major strretsoriented 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.

Nathmalji havelli

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.

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 floorare finished only with mud plaster.

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 .

Air ducts

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

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

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 )

CURVED PANELS

COURTYARDS

CHAJJE

JHAROKHE

Thank you…!!!!