informal settlement
DESCRIPTION
Description and solution suggestions to informal settlement in La Paz - BoliviaTRANSCRIPT
Architecture & Design 211/697
The City
Professor Max Page
Absorption
Informal Settlement
La Paz – Bolivia
Philipp Vargas
Introduction
I have chosen informal settlement as a topic for me because of my personal experience I gained
while I was living in La Paz – Bolivia. The city of La Paz, as many others cities all around the world,
are defined by a highly segregated community according to their income, class, and race. This city I
learned to love is basically divided in an economically wealthy core with an efficient infrastructure
and a modest offer of employment, and then surrounded in its north part by a vast area of informal
settlement populated by lower class of laborer or very impoverished people. Parts of these areas can
be considered as slums. In contrast, the southern part of La Paz is exclusively settled by wealthy or
rich, manly white, citizens, who use to live in mansions build on wide properties, far away from the
dense city context.
Using my personal and partly subjective impressions of a city like La Paz, I am trying to figure out
what informal settlement means for a city and its citizens, using information’s and case studies of
other cities based on the same topic. I am interested in the factors that lead to informal settlement
and the conditions that rise out of those structures. I am curious to know in which ways parts of
informal structures are dependent of the city’s core they surround and reverse. I wonder how small
scale invasions in those structures can effect and improve large areas. I am specially referring me to
the MoMA exhibition “Small scale big change” from January 3, 2011.
Definition
Cities who are affected by informal settlements, usually struggle with an over exponential growth of
urbanization. Those cities are incapable of handling with the upcoming need of housing and
reinforce that way the growth of informal settlements. Informal settlements often lag of appropriate
infrastructure, providing a poor range of sanitation, food storage facilities and drinking water quality.
Cooking and heating facilities are mainly basic and result in a considerable exposure of outdoor and
indoor pollution. Access to health and other services are often limited, overcrowding contributes to
stress, violence and creates tension, which reinforces even more the negative attributes of that area
or community. Especially children during prenatal period and after birth are affected by these
conditions.
Child mortality rates provide a general indicator for the conditions of certain settlements.
In general informal settlements are hard to indentify and even harder to put in figures due to that
many inhabitants are not registered or officially recognized. The definition of informal settlement is
always context specific but some general attributes use to apply.
Either a informal settlement is a group of housing build on land which is not legally claimed by its
occupants, or a unplanned settlement or area in which housing is not in compliance with current
planning and building regulations. |1|
One of the most considerable consequences of the rapid urbanization is its impact on communities,
cities, economies and policies. Most of future and actual cities growth will take part in informal
settlements. These settlements can also be referred as squatter settlements, shanty town or slums.
They are dense housing structures, self constructed under conditions of informal or traditional land
tenure. Informal housing is characterized by a dense proliferation of small, make-shift shelters, built
from diverse materials. At the present time around a billion people live in slum conditions, until 2020
a number of 1.4 billion is expected. That means that at the present time around 7% of the global
population lives under slum conditions, not taking in count the immense number of slum inhabitants
that have not been monitored. The monitoring of slums is part of the Millennium Development Goal
7 to ensure environmental sustainability. Recently the use of geo-spatial technology at a city level
helped to identify and classify informal settlements and their growth > see figure 1&2. |2|
|1| World Health Organization, People living in informal settlements, 1999
|2| ISFEREA - Geo-Spatial Information Analysis for Global Security and Stability - © European Union, 1995-2010
http://isferea.jrc.ec.europa.eu/Activities/Applications/Pages/Informalsettlements.aspx
Figure 01
Average size of built-up structures in Nairobi (Kenya) using image decomposition by multiscale derivative of
morphological profile (DMP): Slum (left), business district (middle), residential district (right).
Figure 02
Anisotropy analysis of built-up structures in Nairobi (Kenya) using directional morphological filtering of shadowed areas:
Slum (left), business district (middle), residential district (right)
Thesis
I hope to find a way, to support my idea that informal settlements can be a sustainable and worth
living spaces, providing the opportunity to settle and succeed in an urban context, even for some of
the poorest citizens. I want to figure out if those settlements can be considered not only as an issue
or a mislead development, but more as an opportunity for their inhabitants as much as for the city
itself.
Case Study: La Paz
Defining the cities areas:
La Paz is located 11,975ft above the sea with a population of 877,363 in the city and 2,364,235
people in the urban area. The City of La Paz lies in a valley of the Andes created by the river
Choqueyapu. The City itself can be subdivided in the core - a wealthy economic Centre, defined by
high-rise office towers, upper class housing and international firm representations as well as
embassies.
Not anymore part of the City La Paz but part of La Paz urban area is the City of El Alto. El Alto lies
on a plateau on the hillside of the Andes. EL Alto is a mainly impoverished area and characterized
my single story brick housings. The population is almost Indigent and defined by natives culture and
habits. La Paz and El Alto are highly connected and influence each other in many ways. This
connection is already obvious, as the only Airport to access La Paz, lays in El Alto. However, this
connectivity and exchange of sources is not always positive and often result in rival, which makes it
difficult to find common solutions for La Paz and EL Alto as well.
I want to introduce a third area that is not defined by governmental borders but by geological
conditions. It lies between El Alto and La Paz. This area is located on the hills between the cities
valley and the high plateau. It shoes the highest number of informal settlements and the biggest
constructive and social issues of La Paz.
In this satellite picture analysis shows the grown structure
pattern of the city’s core. This area corresponded to area C in
figure 03.
In this analysis we see the patterns of area A. It shows a very
structures and gridded planning.
This picture shows area B. It is my mainly focused side,
because of its lag of structure and density that can be
recognized in area A and C.
Figure 03
As shown in figure 03, The City El Alto is defined by the space A. It is the most populated and
widespread part of the urban area of La Paz.
B defines the intermediate hiss side space between La Paz and El Alto. It is also part of the cities
connection to the airport located in EL Alto. This area is mostly affected by natural catastrophes and
shows the highest number of illegal build housing structures. These building mostly don´t
acknowledge the geological factors, as ground materials and natural influences like heavy rain or
earthquakes in their construction, which makes them very vulnerable to any influence. This area can
be defined as informal settlements and is going to be my main focus.
Part C defines the city’s Core, which is due to is limited space very dense. Most governmental
investments go to this area, which has created a wealthy and economically strong environment. The
cores side is defined by generally modern high-rise tower skyline as seen in figure 04.
The area D is topographically similar to area B but is mainly populated by white people, living in
single house buildings on vast terrains. They don´t suffer the same conditions as part B as they hold
the cities main wealth and have the resources and knowledge to build in conditions that adapt the
environment and topography.
In summary the cities economical and build patterns can be defined from West to East. From an
impoverished widespread, low-dense housing area. To the topographically formed, dense and
relatively wealthy City core with extreme amounts of mixed uses and main job offers as well as most
commercial activity. Until an again low dense very wealthy housing area in the far East, that in many
ways seems disconnected from the city s context.
Figure 04
One of the main factors that influence all of those areas equally is traffic. Similar to many cities in
developing countries, the number of cars per capita is rising steadily, which at a certain point is not
supportable by the cities structures any more. Because of that issue, a new governmental instrument
has been introduced three years ago. That agency is in charge of analyzing the cities risks and
geological conditions. They develop urban master plans and realize projects with the support of the
Majors founds. The biggest projects realized in the last years was three bridges called “Los Mellisos”
connecting East and West parts of the city’s core across a deep valley. See Figure 05. In addition, a
large number have been planned but not jet realized, but because of the legal structures and
political tensions between La Paz and EL Alto, all of those development and planning by these
institution take place in La Paz.
Figure 05
To actually improve the whole urban area of La Paz a transportation system would be necessary,
capable to connect both cities, deal with the extreme topography between them and possibly at the
same time improve the conditions of the sector B, which lays in between and mainly suffers
underdevelopment in that sector.
At this point, I would like to introduce the project “Metro Cable” by Urban-Think Tank, build 2007 to
2010 in Caracas, Venezuela, which shows many parallels to the situation I talked about.
It is a cable lift that brings people from the hillside down to the City Centre. See figure 06.
It makes the city more pedestrian friendly and allows people to access the city in a shorter time
period. This development has two big positive factors. First, It brings people faster and easier in City,
the place where they daily work and have to commute to anyway. This reinforces the Citi’s economic
productivity because the commuters are less tired, as if they had to walk up and down the hills as
before and that way they have more time for their daily work. The second positive side effect is that if
people are provided with a public transport system, independent from roads, they might not tend to
buy a car and by that way prevent further overcrowding, or at least give the city’s infrastructure more
time to react.
However, the most outstanding point about this project is actually not the cable, but the stations. The
stations are not just a traveling hub, but also introduce an additional function. These could be
schools, recreation or any other activity that generate an additional value to the side and improve
the whole area. This gives the project a special challenge. Because of the limited number of stations,
these must not just be well placed in terms of transportation but must also be placed in a logic
manner in order to provide the highest affectivity of the additional function.
Figure 06
Figure 07
Another serious issue about La Paz informal housing development is on one hand their legal
circumstances and the manner thy are developed.
The point why I am talking about Informal settlement and not about slums is that the land these
housings are built on are actually owned by the person or family that lives on them. In contrast to
many slums these legal issue about ownership does not apply to most of the housing developed in
La Paz. However, the problem is that specially in area B, but elsewhere too, these developments do
not have the governmental permission to be built. They either where build against to the building
code of that particular side or, and which is the most important factor, are not permitted to build
because of the way that they would be build. The geological and natural environment, especially in
those zones between hill and valley, require a certain building typologies and side analysis, which is
not affordable for the poorest. These conditions lead to situations in which after a strong storm or a
smaller earthquake entire blocks or parts of the hill would just slide down and kill many inhabitants
of that area. Nevertheless, even already knowing about those risks other people would later build on
the same spot in the exact same way. This means that there is no actual learning process involved,
what can be reduced to the lag of knowledge and the missing resources.
At this point, I would recommend involving strongly the governmental or private knowledge and
resource to improve that situation. As soon as this area gets more attention and actually would
produce a source of income, it would be an automatic process to generate affordable, sustainable
and safe housing. Benefiting nor just the ones that inhabit that spaces but also the one who build it.
To give that point a picture I would like to introduce the project “Quinta Monroy Housing” by
Elemental between 2003-2005 in Iquique Chile. This concept introduces social housing as an
investment instead of seen it as a spend. The idea is to pick a terrain in an area that naturally will
increase its value, just because of natural development of growth. I would take minimal public
founds to provide social housing on an already build site, in order to replace the ineffective
structures. To do so a certain amount of families would be asked to work together with the building
company or institution to provide their land in order to rebuild their housing. It would be given back
after construction is finished, and they would actually own that building legally.
The company managed to work closely with the inhabitants and local engineers to mainly fulfill the
owner’s wishes and deserves. For instance, the new development recognized the existing community
structures and arranged floor plans in a manner to create shared patios. In addition to introduce
more security by reducing the patios entrance to one, that can easily be controlled by the
inhabitants. See figure 08. Here again we have an outstanding project that solves several problems
at the same time it introduces a secure livable space that can be seen as a future opportunity and
financial opportunity for its owners, as they end up having valuable belongings that raise its value
over time and can be resold with
benefit.
Figure 08
That means that space is created the is legal and actually will endure years in contrast to the
structures that would be whipped away every jeer by natural influences. Also recognized culture and
future development and is not forcing to be the ultimate solution.
For instance are these housings developed in a manner that they allow future additions and
modifications on an individual base. In figure 09, we see the building right after being finished, but
in figure 10, we can see the inhabited space, modified and adapted to the individual need of every
family.
Figure 09
Figure 10
Conclusion
To actually get involved in improvements that affect human living conditions and help local economy
to a healthy growth it is in first place important to recognize which areas do actually need to be
newly overthought and to understand the local factors and needs.
From my point of view, I am spectating the situation from a distant angle and it would actually
require me to physically be at that place to truly understand the consequences and conditions. I am
aware that it would require a deeper investigation and local contact to actually proof my thoughts to
be appropriate or at least to be an opportunity. Feed by my pool of information I could introduce
two examples that possibly could be applied to my chosen area (area B). In addition, possibly fit to
similar locations. The reason why I have chosen this projects is their sensibility. These projects do not
just try to apply known patterns into a very special area, ignoring all local influences. However, these
projects do not just improve on a simple and effective base, but add an extra value, which makes it
desirable to associate with this developments. This is actually a challenge if we think of those places
to be one the most ignored and undervalued areas of an entire City.
Literature references
Defining the topic
World Health Organization, People living in informal settlements, 1999
ISFEREA - Geo-Spatial Information Analysis for Global Security and Stability - © European Union,
1995-2010
http://isferea.jrc.ec.europa.eu/Activities/Applications/Pages/Informalsettlements.aspx
Case studies
The World Bank, Kabul Urban Policy Notes, Series n.2, 2004
FIG Working Week, a Model for Solving Informal Settlement Issues in Developing Countries, Athens
– Greece, May 22-27, 2004
Environment and Urbanization, A shelter of their own: informal settlement expansion in Greater
Cairo and government Responses, Vol. 10 No. 1, El-Haram 12111 Giza - Egypt, April 1998
Dr. Yohannes Gebremedhin/USAID/LTERA, Preliminary Assessment of Informal Settlements in Kabul
City, March 24th, 2005
Edesio Fernandes, Informal settlements in Syria: a general framework for understanding and
confronting the phenomenon, Damascus, September 4th 2008
FIG Working Week Wafula Nabutola, Upgrading Informal Settlements – Kenya: Rural & Urban,
Kenya, May 22-27, 2004
Gita Goven, Green Urbanism - Kosovo informal settlement upgrade
Case Study, Cape Town - South Africa
Mark hunter, informal settlements as spaces of health inequality: the changing economic and spatial
roots of the aids pandemic, from apartheid to neoliberalism, centre for civil society research report
no.44, 2006
Mark Napier, Informal settlement integration, the environment and sustainable
Livelihoods in sub-Saharan Africa, South Africa
Fernanda Magalhaes Rojas, Facing the Challenges of Informal Settlements in Urban Centers: The
Re-urbanization of Manaus – Brazil, Eduardo
Michael Barry and Heinz Rüther, Data Collection Techniques for Informal Settlement
Upgrades in Cape Town, South Africa, URISA Journal, Vol. 17 No. 1, 2005
Books
Diana Mitlin and David Satterthwaite, Empowering Squatter Citizen, Earthscan, London, 2004
Petro Garau/Elliot D. Scalar/Gabriella Y. Carolini, UM Millennium Project – A home in the city,
Earthscan, London, 2005
Umlazi & Kenville, cities without slums situation analysis of informal settlements in South Africa,
Nairobi, 2007
Mike Davis, Planet of Slums, VERSO, London/New York, 2006
Edésio Fernandes, Regularization of Informal Settlements in Latin America, Policy Focus Report
Lincoln Institute of Land Policy, 2010
UNO Habitat, State of the World’s Cities 2010/2011, Earthscan, London/Washington DC, 2008
James Holston, Insurgent citizenship, Princeton University Press, UK, 2008
James Holston, The modernist city, The University of Chicago Press, Chicago, 1989
Web
http://www.moma.org/interactives/exhibitions/2010/smallscalebigchange/index.html