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D-A-CH XML Data exchange for Bidding, Awarding & Accounting

AEC3 analysed for the study the three D-A-CH countries' exchange formats, GAEB DA XML 3.1, ÖNORM A 2063:2011 and SIA 451 XML (Draft 2009) and presented it's conclusions in a first workshop in June 2013. The following three results were reached :

  • With the efforts probably too great and the prospects of success too minimal it is no longer expected that there will be a joint XML-base data exchange at the end of this study
  • Not in the short but rather in the long term: Chances of harmonizing the three data exchange formats were rather seen in the context of future maintenance updates.
  • There's still a lack of standards and harmonization prior to the tendering phase: In the three D-A-CH states data consistency from the (rough) sketches to the tendering phase hasn't been realized. But it is essential for a realistic cost estimation and planning. Thus this was seen as something that could be jointly achieved independently of national building and construction traditions.

At a second workshop talks were concentrating on the works of working group 2 of ON-AG 011.09, that is currently working on ÖNORM A 6240-5 and in this context bringing ÖNORM A 6240-4 in line with the newest findings. In order to be prepared sufficiently for future discussions, AEC3 suggested establishing the German, the GAEB point of view in these matters first. A way to go about this could be - as AEC3 suggested - using the IDM method.
From an AEC3 point of view it is essential for a flawlessly functioning data exchange, that the embedding processes follow certain rules as well. A harmonized workflow between planner/architect and the client in the aforementioned design phases could look like this:

On the content side there is standardizing potential as well: The different detailing stages like Building Shape, Rooms, Building Elements, Building Products and Work Items have dependencies with regard to each other that could be standardized to a great extent in order to maximize the efficiency gain within the planning process. AEC3 suggested that GAEB should actively follow this goal. In this context AEC3 pointed out another field of operation: a comprehensive German language classification of construction information on the basis of ISO 12006-2 (s. Uniclass 2 in UK and OmniClass in USA). A classification is the perfect means to act as a golden thread supporting data consistency from the first design sketches to a building's demolition. AEC3 suggested that this should also be included within GAEB's scope.

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