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Urban Street Edge

One of the very important element of Urban Designing. Street edges play an important role in defining a city.

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Urban Street Edge

  1. 1. URBAN STREET EDGE HRISHkeshI DESAI
  2. 2. STREETS ➤ A street is defined as a “Public thoroughfare usually paved in a village, town or a city, including the side-walks or the side walks. ➤ Streets are the Arteries of a town or a city. It is the streets that determine the fluidity and direction of activities & movement; similar to the flow of blood through the arteries of a living organism.
  3. 3. STREET EDGE An Urban Fabric is made up of: Mass - the built form, Voids - the open spaces and Arteries - the streets The edge of the built form is what makes the envelope of the street. This is called Street Edge
  4. 4. THE ROLE OF AN EDGE IN CITY ➤ In the context of a city, the edge is the surface of the urban block, which defines the peripheries of the block as w e l l a s p l a y s a n a c t i v e a n d independent role in the formal organisation of the urban open spaces. ➤ This edge is an interface between the inner private space and the outdoor public environment. ➤ It there represents a part of an individual building and at the same time is a part of an individual building and at the same time is a part of the urban whole.
  5. 5. THE STREET & THE EDGE The ‘Edge’ is a linear element that is a boundary between the two domains or entities - public and private. The edge may be barriers more or less penetrable which close one region off form another, or they may be seams, lines along which two domains are related and joined together.The ‘Street’ is a linear, open and a continuous linking element bound on either side by either a continuous facade or by a series of individual buildings with gaps in between.
  6. 6. 1. Legal Edge 2. Built Edge 3. Social Edge
  7. 7. ➤ Legal Edge: It is that boundary between the public and the private domains that legally separates these two domains by a plot boundary. ➤ Physical/Built Edge: It is that boundary which physically either separates the two domains or links them. This boundary is demarcated by the extent of the building itself. ➤ Social Edge: The boundary up to which the pedestrians can permeate or have easy access to is the social edge. Types of Edges
  8. 8. BASIC EDGE TYPOLOGIES
  9. 9. ISOLATED DOMAIN WITH LOOSELY DEFINED BOUNDARIES ➤ When the two domains are defined loosely, leaving an undefined area in between, the edge has no strong definition and appears as Amorphous Edge. ➤ This phenomenon mainly occurs in sub-urban areas or urban areas built on sub- urban concepts, where the land either of the street is conceived as individual plots which can be built upon according to the bye- laws recommended.
  10. 10. DISTINCTLY DEFINED DOMAINS ➤ When the two domains are clearly defined and the extent of both the domains expressed through the built wall, the edge is Distinct or a Defined Edge. ➤ The edge is common in the older cities where the dwelling wall sits right onto the street. At residential level, the edge opens out or is transparent making connections between the inside and the outside.
  11. 11. INTERSECTING OR OVERLAPPING DOMAINS ➤ When the two domains intersect forming an overlapping zone, the edge remains not just a wall but an expanded area. This area that belongs to both to the domain is the expanded edge. ➤ This edge occurs at all levels - residential, commercial as well as institutional. In the recent developments modifications in the Amorphous edge has resulted in the expanded type of edge.
  12. 12. PHYSICAL CHARACTERISTICS OF EDGES
  13. 13. VISUALLY AND PHYSICALLY IMPERMEABLE (OPAQUE) ➤ This type of an edge has no punctures and therefore do not offer any scope of participation directly. These are commonly back-walls of structures or part of a belief system that exercises extreme privacy. ➤ In effect these edges become very susceptible to becoming places for dumping. Also in case of busy street conditions, these become effective places for parking of vehicles.
  14. 14. VISUALLY PERMEABLE, PHYSICALLY IMPERMEABLE (TRANSPARENT) ➤ When the two domains are defined loosely, leaving an undefined area in between, the edge has no strong definition and appears as Amorphous Edge. ➤ This phenomenon mainly occurs in sub-urban areas or urban areas built on sub- urban concepts, where the land either of the street is conceived as individual plots which can be built upon according to the bye- laws recommended.
  15. 15. VISUALLY AND PHYSICALLY PERMEABLE (PERMEABLE) ➤ These edges allow maximum possibility of participation as they permit both visual and physical access. These edges are found commonly in the old bazaars where a continuous row of these edges types forms an overall layer of its own. ➤ The frontages are very rarely intruded by hawkers, vendors of any type. Also only temporary parking happens here and the f r o n t a g e s a r e v e r y w e l l maintained almost at all times.
  16. 16. CONCLUSION ➤ Any edge follows one of the two basic edge natures, barrier like or binder like. The context of the edge is the main criteria for evaluating the edge quality. If the edge nature responds to the context, it will automatically produce positive results in terms of the urban environment on the street. ➤ When the edge plays the role of a barrier, it depletes the interactive options of the edge, whilst when it plays the role of a binder the edge enhances the interactive options. ➤ Edges play a vital role in the image formation of a city. They become points of reference for the city dwellers and these references combine laterally to form a unified layer which results in a definite image.
  17. 17. ➤ Any edge anywhere, arises form one or a combination of the following forces: Political force, Legal force, Climatic force, Technological force or Socio-economic force. ➤ Depending upon the spread of the edge between the public and the private domain, the edge can be classified into three major typologies Amorphous edge, Distinct edge and Overlapping Edge. ➤ While the basic characteristics of an edge are opaque, transparent and permeable. Thus, these are the characteristic and factors which determine the crucial role of an urban street edges in the urban fabric of a city.
  18. 18. EXAMPLES AROUND THE GLOBE
  19. 19. Rome - Street Edge Located in the historical city; no road widening has taken place in order to maintain the heritage. Thus there is no defined street pattern; yet the organised activities maintains the heritage character to some extent.
  20. 20. Venice - Street Edge The pedestrian street adds on to the beauty by allocating the eateries on the building edge by taking the advantage of the canal on the other end.
  21. 21. New York - Street Edge Despite New York's heavy reliance on its vast public transit system, streets are a defining feature of the city. Several of the city's streets and avenues are also used as metonyms for national industries there- theater, finance, advertising, and fashion organisations.
  22. 22. San Francisco - Street Edge 32% of San Francisco residents use public transportation in daily commuting to work. And thus, public transportation and walkways playing a dominant role in street developments.
  23. 23. “THANK YOU! - Hrishikesh Desai

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