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Marga ppt 10 nov 8 part 1
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Marga ppt 10 nov 8 part 1


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  • 1. The Urban Century: Theory and Practice Urban Foundation Course Fall 2010 / Class 10, November 8 Modes of Intervention 1 Urban Plans and Theories Part I
  • 2. I. Some basic questions about Urban Plans …what? why? who? how? when?… II. Reading one city: Barcelona analyzing growth, and impacts of urban planning reflecting through BCN ab/ some of the dense texture of urban planning: the city in the garden, the city of monuments, the city of towers, the city of sweet equity, the city on the Highway, and the post metropolis transformations (P. Hall + E. Soja) Outline
  • 3. I. Basic questions What do we need to know about urban plans and theories? … depends on what purposes… What is an urban plan? “an orderly scheme of action to achieve accepted objectives in the light of known constraints” (Peter Hall p.240) … …
  • 4. 20th C: Urban Plan Urban Project Strategic Urban Planning The concept of “Urban Plan” has been historically constructed Post Modern Mov, 1960s - New approach that gives shapes to a fragment of the city, without taking into account the totality of the city. . Late 19th. C & beg 20th. C Defines the shapes of the city as a unity or totality. Implies complex interactions between public decisions and private and free choices. Late 1980s- The Urban Project is one dimension of strategic planning. The technocratic-centralized management is replaced by modalities of management agreed upon among multiple urban agents that participate in the production of the city Novick Alicia. “Planes versus proyectos: algunos problemas constitutivos del urbanismo moderno. Buenos Aires, 1910-1936 ”
  • 5. conceptual framework & assumptions? actions (goal/ nature/opportunity/…)? elements or categories (transport system, zoning, land use…) structure of relations? the formalization of space and shapes? The authors or creators of the urban plans? or the conditions of creation? D. Burnham, Chicago Plan 1909 Daniel Burnham, 1893 Urban Plans: What should we look at?
  • 6. The conditions of implementation? …context, triggering problems, expected results? ? role of Urban Plans creators or designers ? role of the state & municipal government, institutions ? role of the people, community organizations Urban Plans: villains or saints? Impact of urban planning on the growth / building of the cities? El Raval, BCN Diagonal Mar BCN
  • 7. Urban Plans > are included in general urban policies: * imply a conceptual framework (knowledge, values, goals) * an organized society of some sort (coordination, decision making chain..) * a legal framework or a contexts for acceptance But, Urban Plans are distinct from other urban policies (economic, social, political, etc) because they have at the foreground: Material Spaces and Shapes (structures of fixed and mobile physical elements)
  • 8. Urban Plans > are based on the assumption that Space and Shapes can determine (+ / - ) fundamental aspects of societies’ life: health, livable housing, jobs, mobility, education, creative leisure, … Following Peter Hall’s definition, this “orderly scheme of actions” involves many layers of social, political, cultural actions, but must involve decisions about spaces and shapes of the city and its evolution or change through time Hugh Ferriss, Metropolis of Tomorrow
  • 9. the knowledge needed is not only about how to understand urban life, or only to read in an innovative way everyday life, but deep knowledge about the relation of space and society oriented to act on both sides: on society, and on space Then, it also needs specific knowledge about designing and building physical space and shapes: knowledge about the URBS
  • 10. In Roman tradition: Latin: Civis (citizen) comes from Civitas (city) Civitas > people living together, collectivity of citizens (classic & medieval use) Urbs > material part of the grouping of buildings (modern use) urbe (Spanish) urban urbanization suburbs Modern Urbanism or Urban Planning: 19th Century. Urbanization, URBS ? Palmanova, Italy,16thc CPiero de la Francesca, Ideal City, 15C Ducal Palace, Urbino
  • 11. II. Looking at a City as URBS Reading Barcelona
  • 12. Barcelona Head of one of the Spain Autonomous Regions: Catalunya Population, 2008: c.1,600,000 city / c.5m metropolitan area Limited space to grow: a City between Mountains and Sea Different densities> high density in the city “ensanche” around Sagrada Familia 500/ha A long history of + 2,000 years invasions, cultural hybrids, commercial development, power and decay, expansion, building and planning (with success..) Today, Barcelona has an international recognition: First in the ranking of streets & urban public spaces !
  • 13. Barcelona, the challenge of success
  • 14. Expanding economy and tourism since the Olympics in 1992 » Outpacing Spain in all economic indicators Ramblas Ciudad Gotica
  • 15. Ciudad Gotica Plaza Real
  • 16. Expansion through history : from BC to 21th Century
  • 17. Iberian Barkeno Roman Barcino 1st C BC Roman “Planning”? > religious rituals/ control / defense "cardo maximus" + "decumanus" intersection: Forum walls /4 gates/ 74 towers
  • 18. Medieval Barcelona : Urban Growth 11th,12th, and 13th C.: 1200 1280 1000 1100 Muslim invasion 8th C , Francs 9th Mediterranean commerce up to 16th C spontaneous..? institutions?
  • 19. 1519 (Austrias / Carlos V) Building of another big public work: La Muralla del Mar 14th C. bldg. Second Wall 15th C. Third Wall Consejo del Ciento
  • 20. “Ramblas” (from ramla, arenal –sand-- in arab) Road, creek running along the 2nd wall, with convents built along the creek Once demolished, and built the 3rd wall, the “Arrabal” was included into the city. Today, barrio: El Raval Ramblas: started to be fully urbanized at early 18th C
  • 21. 1854 > a sudden opening of rural land 19th C: A Century of Development and Urban Change invasions, internal wars, kingdom – republic - kingdom again, meantime Barcelona growths and expands developing industry and commerce (Mediterranesn Sea) population 250,000 1854 demolition of the walls 1860 “Ensanche” approved Planner : Idelfonso Cerda
  • 22. The opportunity: * Sudden opening of the surroundings * Health, housing and social problems in a crowded industrial city * Institutions: strong state / municipality * Availability of a proposal developed through time (Cerda’s) but it was not the only one (formal, artistic, monumental proposals, Mila, renaixance, romanticism, starting of the Catalan regionalism ) Idelfonso Cerda 1860 plan approved by the State, not the Municipality
  • 23. Cerda > (1815 – 1876) Engineer trained in Madrid studying “scientifically” the city since 1844 published “General Theory of Urbanization” (1867) … a “scientific” treatise … an enlightened approach
  • 24. Cerda attempted to integrate opposites : basically > the individual freedom and the rules of planning Intended to strike a balance between multiple pairs of opposed and complementary notions as: “* law and economics, * duties and rights, * liberty and authority, * advantage and disadvantage, * income and expenditure” And, specifically to the “new discipline” of urbanism “* solitude and sociability, * quietude and mobility, * town and country”
  • 25. From analysis of practical details to a general theory (an overview): “to create something that in the practical realm of application could prove useful to humanity… to resolve an eminent social problem: urbanization” …an algebraic altruist… by establishing: “a body of principles, doctrine and rules to be applied so that, rather than narrowing, degrading and corrupting social man’s physical, moral and intellectual faculties, buildings and grouping of buildings would serve to stimulate his development and energies and increase individual well-being, the sum of which created public happiness”. (1867)
  • 26. Reviewing housing problems, traffic, technical, but also the economic feasibility, “something can not be technically good if it is economically bad”(1862) municipal regulations, politics, social impact: e.g. published “Statistical Monograph of the Working Classes of Barcelona in 1856” analyzing * health levels, * promiscuity, * lack of services, * traffic pile-ups, * miserable nature of mean public spaces, * risks of epidemics.
  • 27. Plan Cerda 1859 Five Bases of the General Theory of Urbanization: 1. Technical Base, ways, interways, street-blocks, grouping 2. Legal Base, rights and duties of property owners and administration 3. Economic Base, established mechanisms for funding urbanization works and for cost and benefit sharing 4. Administrative Base, building ordinances, general principles 5. Political Base, to harmonize desirable with possible, requires multiple “transactions”
  • 28. The street as “a connective entity of ways, and buildings” and as forecourt to the house Streets as elements of a single network of ways, “the great universal viality” / movements in all scales The first law of viability: “continuity of movement”
  • 29. Cerda’s different ways of circulation modern urban ideal universal access to networked infrastructures acces to public spaces democracy unbundled by end of 20th C. See Splintering Urbanism (Graham and Marvin)
  • 30. a radio concentric plan, was not approved
  • 31. Analyzing and grouping streets & buildings viality & housing public & private space
  • 32. Chamfers (20 meters): shape of nodes to ease movement “viality” but also a corner meeting point
  • 33. Today creating options for many combinations
  • 34. inside the block private/public over & under circulation & drains
  • 35. Connection of the old & the new
  • 36. Flexibility / Adaptation
  • 37. Previous uses of The Grid Hipodamo de Mileto French Bastides Ideal Cities Chicago New York Latin America Buenos Aires Mexico Lima… …meaning of the grid?
  • 38. C. 1850s Barceloneta a military design of 1753
  • 39. Barceloneta …no corners
  • 40. Corners in Cerda’s “Ensanche” (enlargement)
  • 41. Plan of La Pedrera, Gaudi Cerda’s Corners
  • 42. 1900: BCN population 544,000 Noucentismo Modernismo Local Identity Gaudi Domenech i Montaner