Vauban target & achieved values An ecological energy concept

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Harry Ross
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1 Vauban target & achieved values An ecological energy concept Achieved values by 2000 and later Compulsory improved low energy standard for all houses: at least 65 kwh/m 2 a (German average : 100 kwh/m 2 a, before: 200 kwh/m 2 a) passive standard 4-storey units: 15 kwh/m 2 a (no regular heating systems, heating through internal gains, passive solar gains, heat recuperation system); 42 units 1 st phase, + 50 units 2 nd phase plus energy standard units: at least 100 units; houses producing surplus electricity sold to the public grid; by 2000 achieved: 450m 2 solar collectors, 1200 m 2 photovoltaics CHP plant: since 2002, connected to the district heating grid, running on wood-chips Savings Energy: 28 GJ per year (CER - cumulative energy requirements - based calculation) CO 2 : 2100 tons/year SO 2 : 4 tons/year Mineral resources: 1600 tons/year energyay 8 - Vauban HWF 18

units 1 st phase, + 50 units 2 nd phase plus energy standard units: at least 100 units; houses producing surplus electricity sold to the public grid; by 2000 achieved: 450m 2 solar collectors, 1200 m

2 Vauban target & achieved values An ecological traffic/mobility concept Reduced car usage streets and other public spaces are playgrounds for children and places for social interaction no parking in front of the house or on private property for large parts of the residential areas; cars parked in 3 community car parks at the periphery Speed limit on main roads 30 km/h, in the residential areas 5 km/h Car-free living this required a new legal framework: the association of car-free living in Vauban, a legal body more that 140 households joined in the first development phase; today, nearly 50% of all households are car-free Car sharing residents joining the car sharing organisation have access to these cars and receive a one year free pass for public transportation within Freiburg and 50% reduction on every train ticket energyay 8 - Vauban Extended of the tram network to serve Vauban, allowing easy access to other parts of the city and city centre (only 2.5 km away) Two bus lines connecting Vauban with the city and the railway station Bicycle routes and pedestrian walkways An extensive network throughout Vauban and the city Integrated transport system for the city and city region; the system has achieved a balanced use of traffic modes (2007): walking 20.8% cycling 17.8% publ. transport 20.8% Car as driver 29.7% Car as passenger 9.9% Motorcycle 1.0% HWF 19

km/h Car-free living this required a new legal framework: the association of car-free living in Vauban, a legal body more that 140 households joined in the first development phase; today, nearly 50%

3 Vauban target & achieved value water management - creation of places Water management Infiltration of rainwater into the ground The system covers 80% of residential areas A new ecological sewage system Sewage is transported via vacuum pipes into a biogas plant where it ferments together with organic household waste, generating biogas which is used for cooking Remaining waste water (grey water) is cleaned and reused for gardening, flashing toilets etc. Design of semi-public & public space Neighbourhood and community involvement in space design To create a landscaped neighbourhood Semi-public spaces such as access galleries, community gardens and rooms created mainly by the Baugruppen and the Genova cooperative; they make visible the neighbourhood and community structures The design of public green spaces, residents streets and the neighbourhood centre are developed in meetings and workshops with the residents energyay 8 - Vauban HWF 20

water) is cleaned and reused for gardening, flashing toilets etc.

4 energyay 8 - Vauban Freiburg-Vauban mobility / traffic concept HWF 21

5 energyay 8 - Vauban Freiburg-Vauban car parking concept HWF 22

6 energyay 8 - Vauban Freiburg-Vauban typology of housing areas HWF 23

7 energyay 8 - Vauban Freiburg-Vauban local services and facilities HWF 24

8 Compariso n of Vauban & research project values: NBH services & facilities (S+F) Vauban projected S+F 1995 Research threshold project S+F Research target distances Local Hub level amenities yes 1 Primary schoo l per 2 hub s, located between them m 4 local hub s Vauban achieved values 2006 Only 1 schoo l, located at eastern edge of NBH Vauban achieved accessibility up to 850m forming th e? 1 medical surgery/hub NBH??? 1 corner shop/hub?? yes 1 nur sery schoo l/hub (All amenities 5 nur sery schoo ls up to 400m yes 1 playground/hub located around a 5 playground s up to 400m yes 1 small ŌparkÕ/hubas central place / 5 green ŌbracketsÕ / up to 400m commun ity place park; see figure commun ity places 1) Neighbourhood level amenities yes Local pub m 7 pub s/bistros/cafˇs up to 400m yes Group of shops to additional A numb er of shops in up to 850m neighbour - main boulevard? Post office hood S+F?? yes Commun ity office one NBH office up to 850m (All amenities yes Commun ity centre and one NBH centre with up to 850m located in a square central NBH market square yes Access to bus, LRT square or Ōhigh 3 tram stops, 2 bus LRT up to streetõwith stops 400m, bu s public transport up to 850m yes Youth meeting place stop; Youth meeting place Access is, yes see Figure 1) 1 adventur e place due to yes 3 small sports fields location, (football, volleyball) un even, up yes 1 riding stable to 850m yes Connectivity: link s to surround ing s, city conn ectivity limited to 4 link s at periphery of NBH yes Permeability of internal street network pedestrian yes, but vehicular traffic is reduced through traffic calming yes Integrated public transport system yes, bus and LRT with good link s to railway energyay 8 - Vauban HWF 25

e? 1 medical surgery/hub NBH??? 1 corner shop/hub?

9 energyay 8 - Vauban Freiburg-Vauban energy concept HWF 26

10 energyay 8 - Vauban Freiburg-Vauban solar installations HWF 27

11 energyay 8 - Vauban Freiburg vauban rainwater infiltration and recycling concept HWF 28

12 energyay 8 - Vauban aerial view - looking south-east HWF 29

13 energyay 8 - Vauban Vaubanallee - construction of tram line HWF 30

14 energyay 8 - Vauban Vaubannallee with local services and facilities HWF 31

15 energyay 8 - Vauban bicycle and chariot on Vaubanallee HWF 32

16 energyay 8 - Vauban Freiburg-Vauban the bicycle in the 'homezone' HWF 33

17 energyay 8 - Vauban Freiburg-Vauban homezone street: intensely traffic calmed HWF 34

Best Practice Case Freiburg-Vauban (& Rieselfeld) energyay 8 - Vauban

Best Practice Case Freiburg-Vauban (& Rieselfeld) energyay 8 - Vauban HWF 1 Location of Freiburg s new urban quarters energyay 8 - Vauban V (Vauban) and R (Rieselfeld) HWF 2 energyay 8 - Vauban The French