?The layout of the city of Jaipur wonderfully links the concept of a Shastric city with the practicalities of the chosen site.
?First, the straight line of the ridge suggested itself as the route for one of the main east-west thorough fares and building a road along its crest makes best possible use of the topography for the purpose of drainage.
?What followed then was to regularize the Amber-Sanganer road as a north-south route at right angles to it.
?The point of intersection would be one of the city’s main cross-roads (chaupar)
Although the location of the axes was determined, their extents were yet to be defined. The southern boundary of the city had to lie within the line of the Agra-Ajmer road. So by extending the NS road as far as possible southwards gives the first fixed dimension, the length of a side of a square and so establishes the size of the unit or module of the city.
A second road ran E to W between the Mughal cities of Agra and Ajmer and placing the new city on this already established communication line would help secure its economic success. However since this was an imperial road that could not be encroached on, thus the city had to be contained to the north of this line. The area to its S is flat while that to its N slopes down gently. In Shastric terms, this is an ideal arrangement as declivity towards the north-east Is considered the best site.
?It is a model of town planning- the first planned city in India. It is based on Hindu systems of town planning and followed the principles prescribed in the Shilpa-shastra, an ancient Indian treatise on architecture .according to this shastra the site