Issues

• units.csv: two Dutch entries duplicate an English unit

  buildingSMART/bSDD#152 · Filter by author janbrouwer opened on Sep 12, 2026

• units.csv: two units have no QUDT reference while QUDT has them

  buildingSMART/bSDD#151 · Filter by author janbrouwer opened on Sep 12, 2026

• Add deprecation note for includeClassProperties in api/Class/v1

  buildingSMART/bSDD#149 · Filter by author Andrej730 opened on Jul 15, 2026

• Improve SemTech support

  APIenhancementtodo
  Feature

  buildingSMART/bSDD#146 · Filter by author atomczak opened on Apr 24, 2026
  13

  

• Units that combine two parts (like 'kg CO2 eq/m²' or 'EUR/m²')

  buildingSMART/bSDD#145 · Filter by author daniel-locatelli opened on Apr 21, 2026
  3

• URI truncated at ~80 chars despite available space (UI issue)

  buildingSMART/bSDD#143 · Filter by author kathrinrin opened on Mar 20, 2026

• /api/Class/v1 bug on URI of external Properties

  buildingSMART/bSDD#142 · Filter by author c-mellueh opened on Dec 18, 2025
  2

• Missing units in bSDD api

  need more info
  buildingSMART/bSDD#140 · Filter by author aaroncostin opened on Oct 11, 2025
  2

• How are IFC Units and IFC data types specified for properties?

  enhancementtodo
  Feature

  buildingSMART/bSDD#138 · Filter by author Moult opened on Oct 5, 2025
  3

  

• Struggling to filter properties

  buildingSMART/bSDD#131 · Filter by author Moult opened on May 28, 2025
  4

• IFC dictionary classes don't have relatedIfcEntity

  buildingSMART/bSDD#130 · Filter by author Moult opened on May 28, 2025
  5

  

• Cannot specify predefined type in IFC

  enhancementtodo
  Feature

  buildingSMART/bSDD#129 · Filter by author Moult opened on May 13, 2025
  6

• Allow adding properties to existing classes in other dictionaries

  buildingSMART/bSDD#127 · Filter by author Moult opened on May 13, 2025
  4

• Hierarchy missing in ttl output?

  buildingSMART/bSDD#121 · Filter by author larswik opened on Jan 28, 2025
  1

• How to specify the relationship between a class and a pset being modelled as class with type "GroupOfProperties"?

  buildingSMART/bSDD#96 · Filter by author MatthiasWeise opened on Jul 10, 2024
  1

• Use of Classes.RelatedIfcEntityNamesList in the case of a version-dependent IFC entity mapping?

  buildingSMART/bSDD#95 · Filter by author MatthiasWeise opened on Jul 10, 2024
  1

• Provide JSON Schema for bsdd

  enhancement
  buildingSMART/bSDD#59 · Filter by author lemoinet opened on Jul 18, 2023
  

• Ontology quick comments

  buildingSMART/bSDD#31 · Filter by author aothms opened on Apr 25, 2022
  3