The three-course primary school Schillerschule of the city of Lahnstein is to be energetically renovated and extended to a four-course school. The building was built in 1959 in three-storey solid construction L-shaped. It is to be adapted to a contemporary architectural language and extensively refurbished in terms of construction, house technology and energy. As part of the renovation, the facade is to be redesigned, among other things. The existing cold roofs shall be demolished and replaced by green flat roofs. A PV system is planned. The supporting structure of the existing building should otherwise remain unaffected. There is a preliminary study that envisages the extension building in hybrid construction of wooden column walls and concrete ceilings with wooden supporting elements. The preliminary study is part of the procurement documents to compensate for an information advantage, because it cannot be ruled out that the office that prepared the preliminary planning will apply for this contract. The preliminary study is only an initial idea that the client considers possible, it is not mandatory to implement. The heat supply may need to be renewed. There are currently two heating systems: The Schillerschule supplies its canteen, while the heating system in the sports hall also supplies the neighbouring kindergarten. In advance, it must be checked whether the heating of the sports hall still works economically and, if necessary, to develop an economical and energy-efficient overall solution for all four buildings. If necessary, the necessary planning services must be provided, such as lines, breakthroughs, E- and HLS technology. A proposal for an overall energy concept, possibly including renewable energies, is required. Sports hall and kindergarten are connected by crawl space, as well as school and sports hall; These can be used for cable management. The preliminary study proposes a supply by means of gas condensing boilers and two heat pumps, in the old stock possibly supplemented by wall heating, as well as a central mechanical ventilation with heat recovery. Proposals should be reviewed and not necessarily implemented. Therefore, an extended needs analysis with variant suggestions for the HLS is required. Electricity is supplied via a transformer station on the property. To a small extent, a planning of the outdoor facilities is required. Where possible, the level of the outdoor facilities should be raised to reach building class 3; The transformer is green. The Schillerschule is located in the floodplain of the Rhine. The planning is to be designed in a flood-compatible and flood-adapted manner so that an exemption under water law can be granted. In the future, the school may be extended to a five-course course. The extension itself is the subject of the order up to the service phase 4, so that construction and connection are possible later. The preliminary study is only a first planning idea. All planning services are advertised from service phase 1 to service phase 9 (or 8, fire protection planning and 6, structural planning).
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