【正文】 s brought the whole development clearly further. Surprisingly enough the results of the petitions went hardly beyond the relatively easy reachable possibilities. And the usual way of sustainable building is still far away from a substantial contribution towards significant minimised use of resources and energies. After a period (starting 1965) of designing and realising a few (early historical examples of) healthy and environmental conscious buildings specifically under the term Integral BioLogical Architecture (IBA) the author started also to develop building principles and systems GaiaBuildingSystems (GBS) which answer the demands of higher than usual sustainability for building Redundant to mention that sustainability do not go (automatically) hand in hand with durability. The Straw Panel System There are at least two approaches, which basically could help the Poor as well as the Rich in the world to reach Sustainable Building. This means roof and homelessness can be solved by rather low efforts and extremely lowinvestments for large needs on the one hand and the Rich could bring down their exaggerated energy and resource consumption on the other hand. 10 The one approach to reach this ideal, but for the balance in the world necessary situation, is, to build mainly with easy and continuously renewable materials much easier renewable than timber or wood, namely materials like grass, elephant grass, straw, reed, bamboo, Jeruzalem artichoke, maize, sunflowers .... The other approach is to use highly advanced materials and products, but only in the smallest, thinnest and lightest quantities and dimensions. Both these approaches can be worthwhile in all parts of the world. A start, even based on some marginal traditions with similar developments is already made. Building with . strawbales and reed roofing, bamboo and various other plantmaterials is wellknown as well as the use of fabrics, foils and wires for building purposes. The Straw Panel System (SPS) The biggest volume of available matter certainly including the most renewable material is the biomass on the surface of the pla in all continents, reproduced each year. From the above mentioned kinds of plants we are able to produce manually or industrialised sandwich panels. Those panels are filled with honey blike fillings of straws and trawlike pipes or materials. With some pressure, literally, the material provides us with a natural adhesive or glue, gets locally also higher strength, can bee transparent, nearly like glass, reaches a high thermic insulation value (when thick enough), can be shaped in the most fantastic forms, but remains light of weight and easy to handle. The briefly described elements or ponents, possible to be manufactured or produced, can be posed to a building system. The Straw Panel System can be applied for low, but also for huge and high (multistorey) buildings together with . a skeleton. The SPS is finally fully biodegradable after perhaps some other use in a kind of ‘cascade’. CONCLUSION We introduced the place and meaning of the Life Cycle of Building as well as the knowledge about, w ithin a Sustainable Development. The Life Cycle of the entire building process itself has an extraordinary strong impact on health and environment. In order to register all influences of the Life Cycle on health and environment we need an 11 enormous amount of data, being aware, that they can change more or less continuously. The official Dutch Contributions to Sustainable Building are impressive in their aims. The practical realisation takes place with small steps. The nongovernmental attempts towards aSustainable Development always were and are still far ahead. They have a stimulating influence on the practice, but – according to the pioneers – much more has to be done in order to support Sustainable Building significantly. The plexity of the Life Cycle of Buildings makes it not easy to apply the already found principles and requirements. When the technical aspects are known, there are still economical interests, which makes it difficult and yet impossible to realise Sustainable Building in practice. In order to help the process of being aware as well as to apply the insights, two conditions – translated into rules of thumb – have to be fulfilled, namely ‘collaboration’ (. by the Method Holistic Participation– MHP) and the proper choice of building materials (by the Matrix for the choice of Material with minimizing risks for health and damage of the environment), representative for similar necessary actions. There are innovative proposals for Gaia Building Systems, but there is still a change in paradigms and habits needed in order to be able to build really sustainable. REFERENCES Dutch Ministry for Housing Regional Planning and Environmental Affairs: Dutch Environmental Policy Plan ‘To loose or to choose’ (NMP) The Hague, 1989, NMP+ 1990, NMP II 1993, NMP III 1998 United Nations: Our Common Future (Brundtland Report) New York World Watch Institute: State of the World, annual report, since more than 10 years GAIA, an Atlas of Pla Management SIEP Putting Habitat Agenda to work CIB Agenda 21 on sustainable construction, CIB Report Publication 237, July 1999 VIBA, Association Integral BioLogical Architecture, Den Bosch, Netherlands DISSERTATIONS: 12 Xiaodong Li MEANING OF THE SITE A holistic approach towards site analysis on behalf of the development of a design tool based on a parative casestudy between Feng Shui and Kevin Lynch’s system, December 14, 1993 Heinz Frick STRUCTURES OF INDONESIAN BUILDING CONSTRUCTION Development of methodic principles for a constructive pattern language, exemplary introduced by the construction