Defining an urban site is done according to two properties, geographic milieu or physical size. When it comes to defining the site on plan, one not only has to take in effect the present site, but also the other networked sites that constantly interlace into the existing boundaries. There stands five concepts for urban design thinking which help visualize sites in order for them to be studied:
Mobile Ground, the relations between the many users of a site inscribe a mobile ground in which urban sites are no longer seen as static but rather as a space that moves, and bends according to how you look at it. Site Reach, when using scale in urban context, it is no longer a linear thing but rather a multiscalar network. Site reach helps measure in various aspects, to link the localized place with its urban surroundings. Site Construction, produces definitions that set project boundaries, as they are constructed through selective viewing rather than an isolated one. Unbound Sites refers to sites that have unclear physical boundaries; instead these sites are encompassed by outside spaces which in turn create a permeable boundary which is in constant flux. Urban Constellation, helps infuse the line between context and site by distinguishing the sites interactions throughout its urban operation.
One of the most integral parts in a construction is the site. Not only is it the bases in which the construction takes place, it was considered in the pre-industrial era as a source for the building materials as it was too expensive to transport them to the site itself. Through technological advancement, (reinforced concrete, plastics, alloys) and evolution of innovative techniquies, (air-conditioning, ect.), it is now possible to build on virtually any site without the limitations encountered in past construction.