The guideline on creation of regional material cadastres is now available.
Soon you will find here an interactive version of the guide.
Guideline for Regional Material Cadastres
A material cadastre captures and manages information about the existing materials in buildings and other structures of the built environment. It provides an overview of the type, quantity, and condition of the materials used in a specific area and serves as a foundation to map the dynamics of materials in the built environment within a city or region. This can be utilized to specify strategies for circular construction in cities and regions.
The creation of a material cadastre is done through the typological description of the existing stock of buildings and their linkage with corresponding material composition indicators.
The typological description of the stock is based on a GIS analysis of building polygons and their attributes. Using geospatial data and 3D building models, information such as building function, floor area, height, and volume is defined. Additional structure type mappings and administrative boundary data allow for further differentiation.
The raw data are collected and spatially and content-wise cleaned and processed with the help of suitable geoinformation software. Spatial queries with the administrative boundary data enable the assignment of attributes to the building polygon datasets and the linkage with material composition indicators.
Building-specific material composition indicators describe their specific material contents in relation to the floor area or volume of the buildings. Detailed analyses of representative buildings that demonstrate typology based characteristics in terms of usage and construction methods provide the basis for this.
The creation of a material cadastre requires various data processing steps and data corrections to achieve accurate results. The result is a material cadastre that contains information on material composition indicators and material stocks in tons for each building. A similar analysis can, in principle, also be conducted for transportation routes.
By combining building information and spatial data, the material cadastre enables efficient management and utilization of building materials. It contributes to resource conservation and the avoidance of grey greenhouse gas (GHG) emissions.