The Viennese Building Stock from 1920 to 2018: a Prototype Model

Reimer, Ferdinand and Kral, Ulrich (2020) The Viennese Building Stock from 1920 to 2018: a Prototype Model. SHAPING URBAN CHANGE – Livable City Regions for the 21st Century. Proceedings of REAL CORP 2020, 25th International Conference on Urban Development, Regional Planning and Information Society. pp. 883-892. ISSN 2521-3938

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Abstract

Historical urban archives and todays geospatial data provide rich information about the development ofsettlements. The goal of our study is to show the historical development of the building stock in the city of Vienna. We developed a spatial-temporal model and tested its application on the Viennese 18th district. Four steps were carried out. First, we made a 3D reconstruction of the building stock of 1920. We digitalized historical city maps and manually converted them into vector data. The building heights originate from a historical building registry and the construction period from a historical thematic map. Second, we used the existing building stock model for 2018 from the city government and attributed the construction period to each building. To get the best quality data on the construction periods, we merged three different spatial datasets from the city of Vienna. Third, we developed an algorithm to compare the building stock of 1920 and 2018. The comparative analysis produced thematic maps with demolished and newly constructed buildings. Fourth, we used these bottom-up results and developed an optimization model to determine the construction and demolition rates over time. We found that the total built area increased from 0,8 to 1,1 Mio m². About 0.02 Mio m² have been demolished and replaced with about 0.03 Mio m². About 0.02 Mio m³ have been newly constructed without prior demolition. The annual demolition rate (demolished built area over total built area) ranges between 0.1 and 0.3% p.a. The annual construction rate (constructed built area over total built area) steadily declines from 1.3% p.a. in 1920 to 0.3% p.a. in 2018. In the future, we will extend the geographical scope of the analysis to the entire city. At the end of the project, the datasets will be available under a creative common license and can be used for applications in the field of urban history and cultural heritage research.

Item Type:	Article
Additional Information:	We gratefully thank Friedrich Hauer and the Wiener Stadt- und Landesarchiv for providing the dataset with the building polygons of 1920. Our thank goes also to the Viennese city adminstration for providing datasets and expertise. Special thank goes to the Wiener Stadtbaudirektion and to the municipal authorities “Stadt- und Landesarchiv” (MA8), “ Architektur und Stadtgestaltung” (MA19), Stadtteilplanung und Flächenwidmung (MA21), „Wirtschaft, Arbeit und Statistik“ (MA23), „Baupolizei“ (MA37) and „Stadtvermessung“ (MA41).
Uncontrolled Keywords:	geographical, spatial, building stock, development, trends
Subjects:	H Social Sciences > HD Industries. Land use. Labor N Fine Arts > NA Architecture Q Science > QA Mathematics > QA76 Computer software T Technology > TH Building construction
Depositing User:	REAL CORP Administrator
Date Deposited:	04 Feb 2021 16:58
Last Modified:	04 Feb 2021 16:58
URI:	http://repository.corp.at/id/eprint/708

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