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Kronsberg city is suburb of Hannover .It will showcase of creativities
on urban development ecological and social planning a new city district
created for the future to make manifest the world exposition themes,
'Humankind, Nature, Technology' in everyday community life.
Kronsberg was built for 2000 World Exposition on a 1,200
hectares site located in the southeast of Hannover, Germany. The
project aimed to build an ecologically-sound suburban community.
Once finished, Kronsberg is expected to have a total population of
15,000 residents and approximately 6,000 dwelling units.
Hannover, Kronsberg, Germany
Introduction
Objectives
Reduce CO2 emissions by 60% compared to current standards for
conventional residential buildings, primarily Kronsberg through Low
Energy House (LEH) construction methods.
Reduce household waste by 50% and construction waste
Sustainable Development of Kronsberg
Construction praxis Socio Cultural Considerations Environment
Compact Layout
Resource-Efficient Construction
Mixed Use: Residential And
Commercial
• Tram route D
• Traffic calming
• All amenities within easy walking
distance
• Cycle priority route
• Parking space restrictions
Open Space Quality
• neighborhood parks
• Green corridors
• District park
CENTRAL FACILITIES
• Arts, community & advice center
• Church & neighborhood center
• Health center
SOCIAL INFRASTRUCTURE• ‘kinderhouse’ with community bakery
• Kindergartens
• Primary school
• Middle / secondary school
• ‘FOKUS’ housing project
• ‘Habitat’ international housing project
• Decentralized support for senior citizens
• Space allocation for community
use
NUTRITION• Market
• Kronsberg Farm
ECOLOGICAL
STANDARDS ENERGY
• Energy use optimization
• District heating systems
• Low energy buildings
• Electricity saving measures
‘Solar City’• Solar district heating system
• Passive solar houses
• Wind turbines
• Photovoltaic cell technology
WATER• Rainwater management concept
• Drinking water economy measures
WASTE• Ecologically compatible building
materials
• Building waste concept
• Domestic and commercial waste
concept
Kronsberg
Approx. 80% of building land
owned by the City
Overall concept enforced through
clauses in land sale contracts and
planning permission contract
Approx. 50% subsidized housing
2,700 units in 3–5-storey apartment houses
300 units – 2 story private terraced houses
Transportation of Kronsberg
Environmental compatibility and the
compact community were the paramount
aims of transport planning for the
Kronsberg district. A new direct tram
service links the settlement with the city
center. There are three tram stops located
along city so that nobody has to walk
more then 600 meters to reach a tram.
Journey time to the city center will be
just 15 minutes.
Footpaths and Cycle ways
To complement the street layout a finely-
branched network of paths is laid through the
quiet inner courtyards of the district which,
with their more private character, offer safe
play spaces for children
All streets and paths in the district give access
to the attractive footpath and cycle way
network in the surrounding countryside.
Parking Space
Car parking spaces are provided partly in
underground garages in smaller facilities.
Exploiting the local topography.
To reduce the number of parking spaces in
the inner courtyards for the general
enhancement of public spaces, the City of
Kronsberg passed a by law permitting just
0.8 of a parking space per dwelling (instead
of the standard one space per dwelling.
Open Space Quality
The Kronsberg district has a great deal of open
space and intensively designed green space.
Each building plan was complemented with a
qualified open space plan by a landscape
architect who had to meet the high design and
ecological standards set by the municipality.
Border avenue between the new development
and the countryside
• Park corridors
• Neighbourhood parks
• Green inner courts
Co2 Reduction
60% less CO emissions through:
Low Energy House (LEH) construction methods with quality assurance
monitoring
district heating network, supplied from CHP plants
electricity saving programme
District heating
Decentral cogeneration heating plant
Compulsory connection to the network
Only 5% more expensive than new-build developments with district heating
connections elsewhere in the city
Low Energy Houses
All buildings in the Kronsberg district have been erected as Low Energy Houses
(LEH). Every building must use less than 55 kWh per m2 and year for space heating, verified
through a quality assurance programme.
Electricity Saving Measures
A wide –ranging electricity saving programme is implemented at Kronsberg,
aiming to reduce the usual domestic electricity consumption by 30% from an average
consumption of 2,500 kWh to 1750 kWh per household and year , the national average lies
between 2,800 and 3,000 kWh
Passive House
In 1998 pilot project of 32 passive
Houses at Kronsberg
Energy consumption just 15
kWh/m2 p.a.
Passive house
Wind Energy
The most important renewable
energy source on Kronsberg is wind
power.
Tow large and one smaller wind
turbines to provide enough energy
for 3,000 houses
WATER MANAGEMENT
The Kronsberg water concept, based on this ideal, takes three courses:
1. a rainwater management system following natural principles as part of the
registered EXPO project
2. drinking water economies across the entire district
Conventional construction
paved and built-up surfaces
Rainwater runs off into the sewers.
fewer sealed surfaces
permeable surfaces on e.g. car parks
groundwater infiltration
alternative flood protection measures
Rainwater Concept at Kronsberg
Rainwater Concept at Kronsberg
April 2000
Eigenbetrieb der Landeshauptstadt
rainwater management
situation in 1994
infiltration45% ev aporation
53%
runoff2%
conventional drainage
evaporation46%
runoff29%
infiltration25%
with M ulden-Rigolen soakaway system
runoff3%
infiltration50%
evaporation47%
Waste Management
Waste avoidance (- 380,000 t)
Dumping of soil, building rubble, sewage
sludge (- 340,000 t)
Recycling, composting of organic waste
(+ 72,000 t)
Recycling of glass, paper, packaging and
scrap metal (+ 41,700 t)0
100.000
200.000
300.000
400.000
500.000
600.000
700.000
800.000
900.000
1.000.000
1989 2002
Me
ng
e [
t]
Avoidance
Recycling
Disposal