6
W. van Dieren
1.6
Material Flow Chains are Closed Where this is Environmentally
Most Effective
Cities of the twenty first century cities must thrive on sustainable energy (in anticipation of depletion and change of resources, in combination with a high degree of energy
efficiency). Water will have to be supplied in two qualities. Rainwater will have to be
drained away separately and re-used. Swamps must serve to purify water in a natural
way.
1.7
Use of Energy-Extensive and Non-Toxic Materials
in the Construction Industry
Health will tbecome the central objective in architecture, meaning that the materials
used must be non-toxic, free of radiation and save energy and raw materials. The basis
for building construction will have to be timber instead of concrete.
1.8
Environmental Planning as an Instrument to Minimise Transport
Proximity instead of good transport must be the central objective for future planning
and, as such, the key principle to determine locations: housing and jobs will have to be
combined (in urban areas the main residential areas and industries will have to be
located within a radius of 8 km); companies must be linked up with public transport.
1.9
Minimal Dependence on Fossil Energy in Transport
Energy-extensive forms of transport must be stimulated. In the transition phase to
electric transport or transport using hydrogen, the (urban) public transport will more
and more use biodiesel. The energy use and emissions of cars and trucks will be drastically reduced. The hyper-car is in design, being an all-fiber vehicle oflight weight and
absolute minimum oil use (2.11 x 100 km- I ). Public transport will be cheap, frequent,
comfortable, optimally interlinked and on call, and combined with communication technology. The light-weight vehicle is rapidly developing.
1.10
Minimising the Transport of Goods
Dematerialisation and changed production structures will drastically decrease the need
to transport goods. Proximity as a criterion for the location of companies equally decreases the transport need. The availability of goods will be guaranteed at any time by
means of an optimal logistic system with the smallest material input per unit of product or service. This system will be backed up by information technology for supply and
demand (also between production chains), leading to improved efficiency. Tube transport instead oflorry (LKW) will be widely used, providing a factor of 25 MIPS increase.
W. van Dieren
1.6
Material Flow Chains are Closed Where this is Environmentally
Most Effective
Cities of the twenty first century cities must thrive on sustainable energy (in anticipation of depletion and change of resources, in combination with a high degree of energy
efficiency). Water will have to be supplied in two qualities. Rainwater will have to be
drained away separately and re-used. Swamps must serve to purify water in a natural
way.
1.7
Use of Energy-Extensive and Non-Toxic Materials
in the Construction Industry
Health will tbecome the central objective in architecture, meaning that the materials
used must be non-toxic, free of radiation and save energy and raw materials. The basis
for building construction will have to be timber instead of concrete.
1.8
Environmental Planning as an Instrument to Minimise Transport
Proximity instead of good transport must be the central objective for future planning
and, as such, the key principle to determine locations: housing and jobs will have to be
combined (in urban areas the main residential areas and industries will have to be
located within a radius of 8 km); companies must be linked up with public transport.
1.9
Minimal Dependence on Fossil Energy in Transport
Energy-extensive forms of transport must be stimulated. In the transition phase to
electric transport or transport using hydrogen, the (urban) public transport will more
and more use biodiesel. The energy use and emissions of cars and trucks will be drastically reduced. The hyper-car is in design, being an all-fiber vehicle oflight weight and
absolute minimum oil use (2.11 x 100 km- I ). Public transport will be cheap, frequent,
comfortable, optimally interlinked and on call, and combined with communication technology. The light-weight vehicle is rapidly developing.
1.10
Minimising the Transport of Goods
Dematerialisation and changed production structures will drastically decrease the need
to transport goods. Proximity as a criterion for the location of companies equally decreases the transport need. The availability of goods will be guaranteed at any time by
means of an optimal logistic system with the smallest material input per unit of product or service. This system will be backed up by information technology for supply and
demand (also between production chains), leading to improved efficiency. Tube transport instead oflorry (LKW) will be widely used, providing a factor of 25 MIPS increase.