LDAC - Linked Data in Architecture and Construction

The LDAC workshop series provides a focused overview on technical and applied research on the usage of semantic web, linked data and web of data technologies for architecture and construction (design, engineering, construction, operation, etc.). The workshop aims at gathering researchers, industry stakeholders, and standardization bodies of the broader Linked Building Data (LBD) community. The aim of the workshop is to present current developments, coordinate efforts, gather stakeholders, and elaborate use cases.

Upcoming events

RUB Bochum

Previous events


Most or all LDAC matter are discussed and organised among a small committee, namely the LDAC team. This team rotates over time and currently has these members:


LDAC aims at providing a forum for technical discussion on the topic of handling data in architecture and construction. A large part of the workshop is concerned with the use of (semantic) web technologies. Research is welcomed on the use of ontologies and vocabularies for representing building data, 3D geometry, product data, geospatial data, infrastructure data, HVAC data, sensor data, and so forth.

Additionally, the workshop welcomes work on how to combine these highly semantic datasets with other data sets, which in the case of architecture and construction consist mainly of geometry and sensor data streams. Using different data storage techniques (semantic data stores, time series databases, key-value stores), the purpose of the LDAC workshop is to investigate ways in which data can be combined into a complete and holistic set of available building data. Practical techniques of combining datasets in the current web-based and data-driven world are explored: Internet of Things, Machine Learning, Digital Twins, Building Information Modelling.

Finally, and most importantly, a number of industry cases are invited, presenting interesting ideas, use cases, solutions or experience reports related to practical applications at any stage of construction lifecycle (design, construction, operations, facility management, renovation). Both success stories and discussions of obstacles in the way of adoption of presented technologies are welcome.


The workshop topics include, but are not restricted to the following:

  • Linking building data: product, properties, 3D, sensor data modelling
  • GIS - BIM integration using linked data approach
  • Knowledge graphs for existing buildings
  • Building-related ontologies: BRICK, IFC, BOT, OMG/FOG, OPM, DOT
  • Infrastructure modelling: rail, road, infra

  • Operational system integration
  • Semantic Digital Twins
  • Graph data modelling
  • Publishing Building Data on the Web
  • Linked building data management over time and stakeholders
  • Graph analytics and semantic data lakes
  • Visualization of construction data
  • Security and access control with RDF data

  • Ontology Engineering
  • Mapping and alignment of data or ontologies
  • Semantic enrichment for AEC Industry
  • Semantic web services: RDF, JSON-LD
  • Semantic query systems
  • Reasoning, rule systems, machine learning