Monday, 5 August 2013

Slum Upgrading

"Slum upgrading is a process through which informal areas are gradually improved, formalised and incorporated into the city itself, through extending land, services and citizenship to slum dwellers.It involves providing slum dwellers with the economic, social, institutional and community services available to other citizens. These services include legal (land tenure), physical (infrastructure), social (crime or education, for example) or economic.

Slum upgrading is not simply about water or drainage or housing. It is about putting into motion the economic, social, institutional and community activities that are needed to turn around downward trends in an area. These activities should be undertaken cooperatively among all parties involved—residents, community groups, businesses as well as local and national authorities if applicable.

The activities tend to include the provision of basic services such as housing, streets, footpaths, drainage, clean water, sanitation, and sewage disposal. Often, access to education and health care are also part of upgrading.

In addition to basic services, one of the key elements of slum upgrading is legalising or regularising properties and bringing secure land tenure to residents.

Ultimately, upgrading efforts aim to create a dynamic in the community where there is a sense of ownership, entitlement and inward investment in the area."

Cities Alliance

Read all about slum upgrading here.

Monday, 29 July 2013

The Future Of Slums: On The Line Between Hope & Despair

Cities Alliance
"The future of slums can be projected in two entirely different variants: slums of hope, and slums of despair. Based on the prevalent trends, despite some successes which could be termed as ‘best practices’ in formulating slum policies, slums have continued growing in the urban regions of the developing world."

"The need of the hour is to focus on a more comprehensive approach that will integrate factors of emergence and growth of slums and at the same time cooperate with different stakeholders responsible for addressing slum problem. The most striking outcome of past and existing slum policies and strategies are their short sightedness with respect to housing needs in urban regions."

"Governments need a paradigm shift in attitude by looking at the poor settlements not as part of the problem but as part of the solution and look at the poor not as beneficiaries but primary actors of their own development, key tenets of slum upgrading and enabling approaches."

Read the entire article at Urban Times.

Tuesday, 9 July 2013

Lessons to be taken from slums

Favela Rocinha, Rio de Janeiro
(upload.wikimedia.org)
"I realised that the formal city couldn't survive without the informal city … in the slums I discovered a whole new social geography … I began rethinking my whole profession, unlearning what I had learned, and then re-focused on adaptation and reuse and using scarcity as a resource." (Brillembourg)
[...]

This notion is that the slum at its best – or at least at a conceptual level – is a Wiki city. There are no rules other than the resources available and the collective agreements among residents. "An interest that the profession has had for a few years, and it is shared by the public, is that cities don't need to be so planned," says Zaera-Polo. "That cities can be more varied … this raises interest in the idea of cities that are almost self-built: the Wiki house, and the crowd sourcing of design." [...]

"What is probably most fascinating about going to [slums] is that you see the public realm emerging from the bottom-up, you experience it literally," says Zaera-Polo. "As opposed to those of us who have been lucky and born into wealthy economies where it was already there. To see the favelas and slums in South America gives you an incredible insight into how the public realm emerges out of a group of individuals. I think this is something that advanced economies need to look at now."

Read the complete article at The Guardian.

Tuesday, 30 April 2013

The Right to the City (D. Harvey) I

"The city, the noted urban sociologist Robert Park once wrote, is:
man's most consistent and on the whole, his most successful attempt to remake the world he lives in more after his heart's desire. But, if the city is the world which man created, it is the world in which he is henceforth condemned to live. Thus, indirectly, and without any clear sense of the nature of his task, in making the city man has remade himself.
The right to the city is not merely a right of access to what already exists, but a right to change it after our heart's desire. We need to be sure we can live with out own creations (a problem for every planner, architect and utopian thinker). But the right to remake ourselves by creating a qualitatively different kind of urban sociality is one of the most precious of all human rights. The sheer pace and chaotic forms of urbanization throughout the world have made it hard to reflect on the nature of this task. We have been made and remade without knowing exactly why, how, wherefore and to what end. How then can be better exercise this right to the city?


The city has never been a harmonious place, free of confusions, conflicts, violence. Only read the history of the Paris Commune of 1871, see Scorsese's fictional depiction of gangs of New York in the 1850s, and think how far we have come. But then think of the violence that has divided Belfast, destroyed Beirut and Sarajevo, rocked Bombay [...]. Calmness and civility in urban history are the exception not the rule. The only interesting question is whether the outcomes are creative or destructive. Usually they are both: the city is the historical site of creative destruction. Yet the city has also proven a remarkably resiliant enduring and innovative social form.

But whose rights and whose city?" 

Harvey, David (2003) "The Right to the City". International Journal of Urban and Regional Research. Published in: Lin, Jan & Mele, Christopher (2013) The Urban Sociology Reader. London: Routledge. p 429.

Sunday, 24 March 2013

Housing and the Informal City

Vertical Yard
(www.housinginformalcity.co.za)
Housing Possibilities


"Can we imagine a move away from the ‘shrunken mansion’ syndrome satisfying a perceived aspiration towards a dynamic flexibility which can deliver subsidised housing in which the unit becomes an asset leading to income generation?

[...] The settlement upgrade would be planned for the increased occupation density from the start in terms of infrastructure and social amenities.

The design of the proposed housing types also attempts to incorporate and enable income generation through accommodating rental rooms, retail and small business enterprise. Houses are located close to the street boundary to create a sense of urbanity, surveillance, ease of trading and to limit the amount of unusable space between units. Micro-loans, in addition to a basic starter unit (funded by means of the subsidy), can assist owners to construct quality rental rooms as per various pre-defined options. Part of the resultant rental income would go towards repaying the loan. Both the Vertical Yard and the 14x7m Row House offer two different approaches to achieve growth over time and a mix of uses and economies."



Research project 2008-2010.

26'10 south Architects & Prof. Lone Poulsen (Wits University) in partnership with the Goethe-Institut, South Africa.

26'10 team: Thorsten Deckler & Anne Graupner (26'10 principals), Tahira Toffa, Guy Trangos, Shammemah Davids, Claire Lubell, Lara Wilson, Nzinga Mboup.

Friday, 22 March 2013

10 informal city projects

Brief descriptions of 10 projects concerning informal issues in different city contexts all over the world. Some of them well known. Some others definitely worth some extra attention.

Read the complete article.

Metrocable
(intermediatelandscapes.files.wordpress.com)
1. Belapur Incremental Housing. Navi Mumbai, India (1986-present) | Charles Correa

2. The Favela-Bairro Project. Rio de Janeiro, Brazil (1995) | Jorge Mario Jauregui Architects

3. Vertical Gym. Chacao, Caracas, Venezuela (2001-03) | Urban-Think Tank with Mateo Pinto and Matias Pinto

4. Medellin’s Cable Transit System (2006)

5. Metro Cable. Caracas, Venezuela (2007-10) | Urban-Think Tank

6. Manguinhos Complex. Rio de Janeiro, Brazil (2005-10) | Jorge Mario Jáuregui/Metropolis Projectos Urbanos

7. METI-Handmade School. Rudrapur, Bangaldesh (2004-06) | Anna Heringer and Eike Roswag

8. Palestinian Refugee Camp of Nahr el Bared, North Lebanon (2009-present) | Isamael Sheikh Hassan, UNRWA

9. Strategic Urban Projects Dharavi Mumbai, India | Kelly Shannon and Janina Gosseye

10. The Value of Informal Settlements in the Design of Cities. Cali, Colombia (2009-present) | LAU

Tuesday, 19 March 2013

Huaycán: A Case Study on Spontaneous Architecture (C. Dreifuss) III

Part II

Findings

The first identified stage of spontaneous housing is quite similar in almost every invasion: it begins with the demarcation of the land and its initial occupancy with a precarious building made of “esteras” (a constructive system based on a wooden structure, woven straw fences and a prefabricated roof of corrugated metal sheets or plastic). The first structures, frequently built overnight in order to avoid trouble with previous settlers or the authorities, look more like tents, but short after they are replaced by square one-room structures.
When it comes to the occupation of not consolidated lands, it is essential to overcome this stage quickly in order to avoid a possible eviction by the authorities. Therefore it is a priority to replace the initial precarious structure with a more permanent one. However, when it comes to the occupation of the edges of an already established neighbourhood, this stage can have a longer duration. In the experience in Huaycán it was observed that in the zone Z, the most recent occupation, many houses are still made of this type of structure then years after the arrival of the inhabitants. Although villagers expressed a desire for improvement, it is not among their immediate priorities.
Contemporary to the delimitation of the parcels and the erection of these early structures, the settlers’ committee designs areas to be left empty in order to make room for future public services: the streets are drawn considering, when the terrain permits it, a wide section to host even a future two-lane avenue with a central divider. There is also left empty space for public parks or plazas, sport grounds, one or more parcels for the reunion of the local community, mother’s clubs and wawawasis (daycare centers). Often, at this early stage, there is also the presence of representatives of religious orders, who also claim land for the future installation of a small church.
Already at this early stage, when the resident no longer has the constant threat of a possible eviction, it often happens that he or she begins to acquire building materials for possible extensions and consolidations of their home with “noble materials”. We often see bricks stacked beside the main façades of the houses, bags of dry cement on the roof or even stones from the surrounding hills. This is the way of saving often preferred by the new dwellers of the city. Although now the municipal saving banks could give the residents mortgage loans, even if their income is low, this saving method through materials is still widely used.
A second stage in the process occurs with the consolidation of the ground floor: the initial structures are replaced by “noble” materials (brick and a concrete structure). In this stage the priority is to plan the house in terms of its flexibility and, above all, the potential for future developments. Therefore it is quite common to leave an important area on the ground floor available for a small business or workshop, and a free rear area intended for a staircase to the future upper levels.
Constructively, the roof of this floor includes a projecting cornice intended to extend the useful area of the second level; the ends of the iron structures of the cast concrete are left uncoated for it use in the construction of the second floor. The final outline of the building at this level rarely looks finished.
In the third stage of the process the occupation of the second level takes place. Sometimes it is similar to what happened in the first level, starting with a provisional precarious structure that will later be replaced by more resistant materials. When the family’s economic situation allows it, this structure would be replaced by brick walls with casted concrete structure and roof.
It is important to note that this occupation generally occurs at the time when the family has grown and new members have joined in. Hence this floor is often used as housing for grown-up children and their families.
Characteristic elements in this stage are the outside stairs, destined to give an independent access to this area of the house, and the construction of top elements such as fake sloping roofs over the windows or balconies on the façade. Even if the inhabitants intend to continue with the construction of the house’s upper floors, the construction of the second level often coincides with a concern for formal and decorative aspects of the structure: the walls are plastered and painted, decorative elements are introduced, improvements in the outer space are made, etc. On the constructive aspect, it should be noted that there are still many cases maintaining the uncoated iron structure, anticipating for yet other modifications in the house’s structure.
UCV 20 LOTE 53
In Huaycán, most homes, regardless of the zone to which they belong, aspire to this level of consolidation. However, we can identify some isolated examples where a third and even a fourth level are added to the structure.
In most of these cases, the family would occupy a smaller portion of the constructed area, and the rest would be devoted to commercial activities such as hotels or rental homes. In the first case, the formal aspects of the building are particularly important and carefully chosen, aiming for a recognisable image; in the second case, the inhabitants prefer more functional solutions to maximise the occupancy of the available area.
Based on these general guidelines, it is possible to see particularities in the auto-construction processes according to the different studied zone. Evidently not every unit will evolve at the same pace and the economy of the family is the main factor. Residents of Huaycán and of squatter settlements in general agree to perceive their homes – and the ownership of the land – as a future investment opportunity, whether it is just a house, or combined with business or workshop. Not everyone, though, has the resources, opportunities or management skills allowing a considerable economic growth that would reflect in a uniform development of the neighbourhood. 
A second factor relates to external variables. For instance, the zones closest to the commercial centre in Huaycán (zones A and F), and amongst them, the houses placed nearer the main streets, have had the most accelerated evolution and can be found now in very advanced stages of consolidation. Consequently, the zone Z, even considering that its occupation is recent, has a much slower growing process in time.

To-do List

The study aims to show the patterns though which spontaneous architecture develops in time. These patterns will be later be classified in terms of form (physical interventions on the territory) and systems (ways of organisation and interrelation).
In the identification process of this patters we have outlines possible steps for this kind of research:
-          Establish a set of priorities in spontaneous housing, according to the data gathered in the interviews and with the analysis of the houses.
-          Identify the aspects preferred by the dwellers when choosing to build their own houses instead of buying/renting one. One of them, maybe the most important, is flexibility; the possibility to make business out of the land – sub-renting it, making a small workshop, having a store – is also important.
-          Identify the environmental factors affecting house/neighbourhood dwelling. The proximity to commercial lands, the presence of nearby hills or quarries, the eventual construction of new roads, all of them are important factors in the development of the neighbourhoods. A useful tool could be the drawing of heat maps in order to show in which areas the consolidation process is slower as to establish determinants.
-          Statistical analysis on consolidation levels, which percentage of the houses belongs to what stage of consolidation. This would allow us to focus not only in the general development of the neighbourhood, but also in the exceptions to the apparent rules.
Finally, it would be advisable to replicate this sort of experience in other settlements in the outskirts of Lima, in order to effectively check how similar this process is in other areas with different characteristics. This would lead to the establishment of general patters, which not only help us understand the phenomena of spontaneous architecture, but might also lead us to a more participative role in which the architect could propose dwelling projects for these areas, taking the particular processes of the inhabitants into account.

References:

  • Burga Bartra, J. El ocaso de la barriada: Propuestas para la vivienda popular. (Lima, Ministerio de Vivienda, Construcción y Saneamiento; UNI, Facultad de Arquitectura, Urbanismo y Artes, 2006).
  • Burga Bartra, J. «Las urbanizaciones populares.» in Huaca, no. 1 (Lima, Universidad Nacional de Ingeniería, 1987), pp 15-25.
  • Calderón Cockburn, J. «Los barrios marginales de Lima, 1961-2001.» in Ciudad y Territorio, Estudios Territoriales XXXV (Lima, 2003), pp 375-389.
  • Dreifuss Serrano, C. «El mercado arquitectónico del querer (pertene)ser.» in Arquitextos, No. 25, Globalización y resistencia. La inversión económica y su impacto en las ciudades, (Lima, 2010) pp. 14-17.
  • Figari, E. «Huaycán: Una experiencia de urbanismo popular.» in Huaca, no. 1 (Lima, Universidad Nacional de Ingeniería, 1987), pp 26-30.
  • Ludeña Urquizo, W. «Lima: Poder, centro y centralidad: Del centro nativo al centro neoliberal.» in Revista eure, Vol. XXVIII Nº 83 (Santiago, 2002), pp. 45-65.
  • Miró Quesada Garland, L. «La realidad de nuestro crecimiento urbano.» in Huaca, no. 1 (Lima, Universidad Nacional de Ingeniería, 1987), pp 31-36.
  • Nugent, G. El laberinto de la choledad. (Lima, Fundación Friedrich Ebert, 1992).
  • Tokeshi, J. «Arquitectura híbrida: el paisaje de la ciudad popular.» in Bedoya, S. Coloquio lo Cholo en el Perú. Migraciones y mixtura (Lima: Biblioteca Nacional del Perú, 2009) pp. 181-188.
  • Williams León, C. «Barriadas y pueblos jóvenes en Lima 1986.» in Huaca, no. 1 (Lima, Universidad Nacional de Ingeniería, 1987), pp. 4-14.