1. The dangers threatening mankind.- 1.1 The interrelation of the problems.- 1.2 Natural resources.- 1.3 The food problem.- 1.4 The population problem.- 1.5 The effects on the environment.- 1.6 The significance of technological developments.- 1.7 Distribution of prosperity.- 2. Systems approach as a research method.- 2.1 Research strategy.- 2.1.1 Problems and principles.- 2.1.2 Exploratory stage.- 2.1.3 The model stage.- 2.1.4 Design stage.- 2.2 The model approach.- 3. Seeking general data for a dynamic world-model.- 3.1 Population.- 3.2 Food.- 3.2.1 The starving world.- 3.2.2 Increase in arable land.- 3.2.3 The green revolution.- 3.3 Natural resources.- 3.3.1 Limited resources.- 3.3.1.1 Steel.- 3.3.1.2 Aluminium.- 3.3.1.3 Copper.- 3.3.1.4 Lead.- 3.3.1.5 Zinc.- 3.3.1.6 Plastics.- 3.3.2 Ample resources.- 3.3.2.1 Stone, sand, gravel, and chippings.- 3.3.2.2 Lime, gypsum, and cement.- 3.3.2.3 Burnt brick and sand-lime brick.- 3.3.2.4 Concrete.- 3.3.2.5 Glass.- 3.3.3 Resources produced by the earth from year to year.- 3.3.3.1 Timber.- 3.3.3.2 World reserves and annual consumption.- 3.4 Energy.- 3.4.1 Coal.- 3.4.2 Petroleum.- 3.4.3 Natural gas.- 3.4.4 Alternative energy sources.- 3.5 Pollution of the environment.- 3.5.1 Causes, effects, extent, and increase.- 3.5.2 The significance of ecological equilibrium.- 3.5.3 Norms for permissibility of pollution.- 3.5.4 Pollution caused by building.- 3.5.5 The cost of control.- 3.6 Sharing prosperity.- 4. Basic elements of the building process.- 4.1 Specific input data.- 4.1.1 Energy.- 4.1.2 Materials.- 4.1.3 Work and money.- 4.1.4 The technical life of a house.- 4.1.5 The economic life of a house.- 4.2 The Static approach to the limiting values.- 5. Possibilities for quantitative analysis of housing: test cases.- 5.1 The purpose of the test cases.- 5.2 Carib home in Surinam.- 5.3 Living in developing countries: Ghana development plan.- 5.4 Living in the industrial society.- 5.5 Comparison of test cases.- 6. The simulation model.- 6.1 General scheme of the model.- 6.2 Income trends.- 6.3 Income distribution.- 6.4 Population.- 6.5 Housing requirements.- 6.6 Agriculture and forestry.- 6.7 Pollution.- 6.8 The use of scarce resources.- 6.8.1 Energy.- 6.8.2 Iron.- 6.8.3 Lead.- 6.8.4 Zinc.- 6.8.5 Copper.- 6.8.6 Aluminium.- 6.8.7 Timber.- 6.9 The limits.- 6.10 Simulation model results.- 7. Designing within the limits.- 7.1 Building estimate.- 7.2 Energy consumption and heat insulation.- 7.3 The specification of limits.- 7.4 Design methods.- 7.5 Designs for testing the specification of limits and the design method.- 7.5.1 Detached house (Design: C. Bresseleers and B. Menten).- 7.5.2 Terraced house (Design: J. Ertzingen and G. Pijl).- 7.5.3 Rural cluster (Design: E. Binneman and P. Peeters).- 7.5.4 Urban cluster (Design: M. Buytaert, D. de Vocht, and P. Meester).- 8. The projects.- 8.1 Urban terraced house (Design: Frits Mastenbroek).- 8.1.1 Specification of requirements.- 8.1.2 Principal measures.- 8.1.3 Constructional details.- 8.1.4 Estimates.- 8.2 A house in a poor country (Design: Piet Bennehey).- 8.2.1 Location.- 8.2.2 Specification of limits.- 8.2.3 Design.- 8.2.4 Estimates.- 8.3 House with own supply facilities: pyramid 2020 (Design: Willem van den Akker and Jan van Middelkoop).- 8.3.1 Introduction.- 8.3.2 Principles for the design.- 8.3.3 Design and comments.- 9. Conclusions and evaluation.- Appendix A: Some major air pollutants.- Appendix B: Technical life of the house.- Appendix C: Detailed estimates for pyramid 2020.- Appendix D: Heat and sound insulation.