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Geo-Information Management in utilities: A posteriori Integration of Digital Cadastral Maps

By Martin Scheu and Stefan Philipp


In the early eighties numerous utility companies in Germany set up CAD-Systems for purposes of planning and documentation. As Digital Cadastral Maps (DCM) were not available at that time the companies had to compile their own Base Maps. These Base Maps provide base information showing location, shape and size of each street, parcel and building. Up to now this base map layer is used as main spatial reference for most of utility specific infrastructure data (instead of absolute coordinates). Since 1995 the Digital Cadastral Map (DCM) became available in several states of Germany. In order to reduce maintenance costs more and more utility comapanies discarded their own maps and began to use the “official ” Cadastral Map as base map. As simple as this approach appeared to be in the beginning as complex was it’s implementation. Reason for this were the different spatial reference (as well as the positional accuracy) of the Digital Cadastral Map and the companies Utility Base Map. As all assets had to be transferred without losing their spatial associations, differences between the to maps required correction of the utility map. This paper describes how an a posteriori implementation of Digital Cadastral Maps can be done. The necessary steps and methods are discussed. As an example of “best practice ” it describes how the Bavarian utility company E.ON Bayern AG in Bamberg (EBY-RB) successfully manages this transition process. ZUSAMMENFASSUNG Vor über 20 Jahren begannen Unternehmen der Versorgungswirtschaft in Deutschland mit dem Einsatz von CAD-Systemen und gehören so zu den Pionieren der graphische

Topics: Eigendigitalisierung
Year: 2011
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