【正文】 the environment in terms of energy use and emission between digging (in put) out of the environment and bringing back (out put) into the environment. On the way of this life cycle we face exploitation, pollution and deterioration of the environment. Partial reuse is always good, but it is only a very low pensation for the damages, which the whole process causes. 3 LIFE CYCLE Looking more carefully (than usual) to the Life Cycle of materials and products (and similarly also to the flow of energy), applied for all kinds of purposes, including building, it is useful to distinguish in the relationship of the changes a material (or an energy) undergoes with space and time. Doing so, we systematically can focus on the various impacts which the chain of causes and effects of the life cycle of a material has, in different scales and on short, middle, and long term. Before and after the final application and destination of a material, as a ponent in a building, while it is used the actual goal of a building material we can distinguish a number of characteristic activities. There are roughly the following activities: Before the phase of using a material it firstly has to be digged or 39。 out of the environment. Secondly the building material has to be made out or produced from the raw material. Thirdly and mostly there is a certain assemblage needed in order to get a useful building ponent. In between these main activities, transport and storage is needed very often. All of these acts need energy and there is hardly one of them which does not create emissions. To make a building useful, it needs the finishing touch together with the integration of all equipment and furniture, which will go on during the use of the building together with cleaning, care taking and exploiting the building. Heating and/or cooling and lighting are conditional in this period as well. Again, all of these handlings need energy and there is hardly one of them, which does not pollute the environment. After and partially already during the phase of use, it will appear, that changes, or, at least strong, maintenance is needed. Partial demolition will be one of the consequences, than partial or full renewal or refurbishment can take place. Although there is a resource saving possibility of reuse of various gradations with more or less manipulations, needed for a final proper reuse again 39。. Finally, everything, including the energy flow, ends up in the environment. But on the way, unfortunately, the handling mostly was executed without consideration for the availability of resources on long term, in other words exploitation, without consideration for pollution either of the environment and/or concerned and mitted persons and people. Already nowadays we got the proof, that many of the negative effects will last for a long and very long time. We recognize the whole life cycle as an extraordinary plot on the environment, and, paradoxical 4 enough, very often also as a plot against our own health and safety, certainly on a long term. If we would like to reach a Sustainable Development we have to reduce the consumption generally, we have to reduce the consumption of energy, directly and indirectly used, and we have to minimize or even to exclude the pollution. Concerning deterioration of the landscape and exploitation of resources we earnestly have to search for renewable sources, whichs applications lead only to a short lasting deterioration. EFFECTS The effects of building activities are manifold. In the former chapter we spent attention to the life cycle of a (building) material, mainly in terms of phases or periods, shortly in terms of time. Concerning space it is possible to distinguish a number of dimensions or scales, in order to be able to specify effects in this field(s). There is a practical order with the dimension of: Local Regional Fluvial Continental Mondial, and even Cosmic with reference to the fact, that the production and traffic processes, shipping and space exploration. Thus six dimensions. The areas which (can) undergo an impact and influence can be distinguished into: Earth (the ground, including the Mineral Kingdom) Water (all kinds of rivers, lakes, seas, ? ..) Air (the atmosphere) Energy (mainly the energy sources), furthermore the Plants Kingdom the Animal Kingdom Humans (to be understood also as a part of nature) with their (valuable) Cultural Artefacts and possibly miscellaneous, Nine areas in total. These areas, just explained, can be found on local, regional, fluvial, continental and mondial scale. This means, that an impact or influence, caused by a production process or the use of building can affect or effect these areas locally, fluvially, continentally, mondially or even cosmically. Thus six dimension. Beside this, it is necessary to realise, that the effects can e from the various activities, connected to the whole life cycle of a building material or product and the concerned processes. We distinguished nine of those activities. Three before, three during and three after the use of a building, nine together. The possible effects are innumerable. Sick Building Syndrome on the one hand, pollution, deterioration and exploitation on the other hand, are only rather summarizing effects. 5 The reports on base of measurements and enquiries concerning building related illnesses, human and ecotoxicological problems, amongst others in the food chains of animals and men, changes of landscapes and ending resources, beside the elianated and decreasing cultural values, goes already in the tens, hundreds, thousands, perhaps tenthousands ? . Worldwide. If we would like to measure, to rank, to weight in order to judge the impact or influence of a building material in its life cycle in terms of concerned quantities