Wednesday, 2 May 2018

ORIENTATION OF BUILDING

ORIENTATION OF BUILDING:-

Introduction: Orientation is defined as a method of fixing in direction of the plan of the such a way that if drained maximum benefit from the elements of nature such as sun, wind and rain.

Therefore once the site is chosen or accepted for the construction of the building the Architect's first air should be proper orientation terrier to planning and design of building. 

Proper orientation means to utilize the natural gifts in achieving functional comfort inside the buildings through the planned aspects of the building units. 
Orientation in case of non square building is indicated by the direction the normal to the long axis. For example, if the length of the building is east-west, its orientation is north-south. It should be remember that poor orientation of the building results in discomfort conditions inside the building. 


FACTOR EFFECTING ORIENTATION OF THE BUILDINGS :-

The various factor effecting orientation are as follows: 
a) Solar heat gain, for which it is essential to know sun's path throughout the years and relative position with respect to the locality. 

b) Rainfall means direction and intensity of rain. 

c) Prevalent wind means direction and of prevailing wind in summer when it is required and in winter when it is avoided.

d) site condition means location of the site either rural or urban or sub-urban neighborhood or surrounding. 

In view of above data particularly solar and climatic data, the orientation is made best on the need of summer or winter comfort. For places where summer causes greater thermal discomfort, the building as a whole should be oriented to intercept minimum solar radiation in summer and vise-versa.  


Orientation criteria under Indian climate condition: 

Indian climate for design purpose is two zones for generally classified either hot-arid or non-humid. Accordingly India can divided in tow zones for climate point of view:- 
A) Hot-arid zones (or day-arid zone) 
B) Hot-humid zone (or wet zone)

A) Hot-arid zones:-

                                 Such zone having hot dry climate are found mostly in the interior of the country away from. 

B) Hot-humid zone:-

1.West coast of regions (like Bombay):- Orientation should be along the direction south-east and north-west facing south-west. 

2. East coast regions (like Madras):- Orientation should be along the direction south-east and north-west facing south-east. 

3. Bengal:- The best direction for orientation in considered to be along the east and west facing south.

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