1. Urban Futures
A sustainable City

2. A sustainable City
Task:
In a group of 4, think of
how can we have a
sustainable living in a city.

3. You should ask these questions
to yourself..

4. Sustainable urban development
in LEDCs
A sustainable futures require:
 Use of appropriate technology, materials and design
 Acceptable minimum standards of living
 Social acceptability of projects
 Widespread public participation

5. Main dimensions of sustainable
development are..
 Provision of adequate shelter for all
 Improvement of human settlement management
 Sustainable landuse planning and management
 Integrated provision of environmental infrastructure:
 Water, sanitation, drainage and solid waste management
 Sustainable energy and transport system
 Settlement planning in disaster prone areas

6. Sustainable city case study:
Curitiba, Brazil
 Curitiba, a city in SW
Brazil, an excellent
model for sustainable
urban development.
 It has experience a rapid
urban population growth
from 300,000 in 1950 to
over 2.1 million in 1990
but managed to avoid all
the problems with such
expansion.

7. Problems…(1950s & 1960s)
 Many streams had been covered to form
underground canals which restricted water flow
 Houses and other buildings had been built too
close to river
 New buildings were built on poorly drained land on
the periphery of the city
 Increased in roads and concrete surfaces
accelerated runoff

8. Solution late 1960s onwards..
 Natural drainage was preserved – these natural flood
plains are used as parks
 Certain low-lying areas are off-limits
 Parks have been extensively planted with trees;
existing buildings have been converted into new
sports and leisure facilities
 Bus routes and bicycle paths integrate the parks into
the urban life of the city

11. Curitiba – A model sustainable city
 Although Curitiba has grown from 300,000 in 1950
to 2.2m in 2000, the city has avoided the worst of
usual problems of:
 Congestion
 Pollution
 Under-employment
 Unsanitary living condition
 Squatter settlement

12.  Extensive urban
green space has
been developed
with one and a
half million trees
have been
planted

14. Areas prone to flooding have
been turned to wetlands

16. Public transport is high quality
and cheap to use.

18. The city centre is pedestrianised

19.  Recycling all forms of
waste products is given
a high priority
 70% households
separate recycle
rubbish,
 In squatter settlement,
food and bus fare are
exchanged for garbage

21. Key features of a sustainable city..

22. Options for sustainability
 Reduce the use of fossil fuel
 Promote public transport
 Keep waste production to within levels that can be treated locally
 Provide sufficient green spaces
 Reuse and reclaim land
 Encourage active participation of local community
 Conserve non-renewable resources
 Use renewable resources

23. Options for sustainability..
 Compact cities:
 minimise the amount of distance
 Use less space
 Requires less infrastructure
 Reduce urban sprawl
 But is the city is too large, an area becomes:
 Congested
 Overcrowded
 Overpriced
 Polluted
* Then it becomes unsustainable.