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buildingSMART

17 indexed repositories · View on GitHub

Certification-datasets
Sample files of various formats and schema versions. Used for certification purposes.

351 stars
IDS
Computer interpretable (XML) standard to define Information Delivery Specifications for BIM (mainly used for IFC)

C# · 318 stars
BCF-XML
XML specification for BIM Collaboration Format

PowerShell · 261 stars
BCF-API
Web service specification for BIM Collaboration Format

237 stars
IFC4.x-development
Repository to collect updates to the IFC4.x specification

Python · 234 stars
IFC5-development
Development of the next generation of Industry Foundation Classes

HTML · 220 stars
bSDD
The buildingSMART Data Dictionary repository, where we publish the documentation, examples and more. We don't publish here the data, the ...

Python · 193 stars
validate
buildingSMART IFC Validation Service

Python · 67 stars
NextGen-IFC

TeX · 64 stars
IDS-Audit-tool
Official buildingSMART tool to audit the validity of a .ids file (according to the full IDSxml standard).

C# · 41 stars
IFC4.x-IF
IFC4.x Implementers Forum

40 stars
foundation-API
Shared elements in the diverse API standards

38 stars
technical.buildingsmart.org
Content of the technical.buildingsmart.org website.

37 stars
ifc-gherkin-rules

Python · 24 stars
IFC4.x-specification-models
Models used in the official documentation of IFC

Python · 13 stars
ifc-validation-data-model

Python · 9 stars
Standards-builds
Repository of all openBIM standards, both official and in developement, used to produce documentation pages.

HTML · 2 stars

Open All

809 open issues indexed

xmi encoding is not utf8 Open

CI/UML

buildingSMART/NextGen-IFC#1 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
remove dependency to any (proprietary) UML software Open

CI/UML

buildingSMART/NextGen-IFC#2 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Mapping between current UML model and EXPRESS rules is inconsistent Open

CI/UML

buildingSMART/NextGen-IFC#3 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
LaTeX Tikz-UML produces png images Open

CI/UML

buildingSMART/NextGen-IFC#4 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Missing LICENSE Open

Governance

buildingSMART/NextGen-IFC#5 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
UFT8 encoding for IFC serialisations Open

Decision made enhancement valid proposal

buildingSMART/NextGen-IFC#7 · 5 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Use common base16 encoded GlobalIds instead of bespoke base64 Open

Decision made valid proposal

buildingSMART/NextGen-IFC#8 · 7 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Support for referencing other files via STEP anchors and references Open

enhancement

buildingSMART/NextGen-IFC#9 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Minimize Relationships Open

enhancement ISG fall 2020 topic

buildingSMART/NextGen-IFC#12 · 22 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Transactional Exchanges Open

enhancement

buildingSMART/NextGen-IFC#13 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Utilize a concept such as Generics. Open

enhancement Governance

buildingSMART/NextGen-IFC#14 · 11 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Limit all "user" properties to be expressed by property sets / remove "direct" attributes Open

enhancement

buildingSMART/NextGen-IFC#15 · 12 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Deprecate IfcOwnerHistory Open

enhancement

buildingSMART/NextGen-IFC#16 · 22 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
rationalise the use of IfcPropertySet for all properties / unify the current separation between property sets and quantity sets Open

Decision made enhancement

buildingSMART/NextGen-IFC#17 · 10 comments · 7 reactions · 0 assignees · Indexed Sep 14, 2026
Deprecate PagerNumber in IfcTelecomAddress Open

enhancement

buildingSMART/NextGen-IFC#18 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Do something about IfcPropertySetDefinitionSelect and IfcPropertySetDefinitionSet Open

enhancement valid proposal

buildingSMART/NextGen-IFC#19 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Ensure that SELECT entities only contain somewhat equivalent data types Open

enhancement

buildingSMART/NextGen-IFC#20 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Not use EXPRESS ARRAYs Open

Decision made enhancement

buildingSMART/NextGen-IFC#21 · 7 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
avoid collections in EXPRESS TYPEs Open

buildingSMART/NextGen-IFC#22 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026
Deprecate encoding of images using IFC (IfcPixelTexture) Open

Decision made enhancement

buildingSMART/NextGen-IFC#24 · 4 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Deprecating layers Open

enhancement valid proposal

buildingSMART/NextGen-IFC#25 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
late binding approach to taxonomies and properties Open

Decision made enhancement

buildingSMART/NextGen-IFC#28 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
IfcMaterialLayerSet => IfcMaterialLayerList and other Set/List inconsistencies Open

Decision made enhancement

buildingSMART/NextGen-IFC#29 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Normalize (combine) equal type instances to remove redundant information Open

enhancement

buildingSMART/NextGen-IFC#30 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
expressions and variables Open

enhancement

buildingSMART/NextGen-IFC#31 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Remove asymmetries in inverse attributes Open

enhancement

buildingSMART/NextGen-IFC#32 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Brief documentation for the current UML encoding of IFC and issues Open

enhancement

buildingSMART/NextGen-IFC#33 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use only SI units in exhange Open

enhancement

buildingSMART/NextGen-IFC#34 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Spatial Composition restraint Open

enhancement

buildingSMART/NextGen-IFC#35 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Data types Open

Decision made enhancement

buildingSMART/NextGen-IFC#36 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Case sensitivity of IFC classes/entities Open

enhancement

buildingSMART/NextGen-IFC#37 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Should the next version of IFC adopt the latest version of STEP? Open

Decision made enhancement

buildingSMART/NextGen-IFC#38 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WHERE rules Open

Decision made enhancement

buildingSMART/NextGen-IFC#39 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Disallow line breaks inside strings Open

Decision made enhancement

buildingSMART/NextGen-IFC#40 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Have more meaningful prefix than Pset or Qset for standardized property sets Open

Decision made enhancement

buildingSMART/NextGen-IFC#41 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Remove the implementer agreements and merge them into the official documentation/spec Open

Decision made enhancement

buildingSMART/NextGen-IFC#42 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Deprecate IfcExternalSpatialStructureElement and subtype Open

enhancement

buildingSMART/NextGen-IFC#43 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
use GUIDs for relations Open

Decision made enhancement

buildingSMART/NextGen-IFC#44 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use GUIDs for enumeration values in IfcSimplePropertyTemplate Open

enhancement

buildingSMART/NextGen-IFC#45 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Overlap between IfcAdvancedBrep, IfcFacetedBrep, IfcTessellatedFaceSet and its subtypes Open

enhancement

buildingSMART/NextGen-IFC#46 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Simplify Colors / (Surface) Style(s) Open

enhancement

buildingSMART/NextGen-IFC#47 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add an origin information to GUID's Open

enhancement

buildingSMART/NextGen-IFC#48 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Specify a UUID version for GlobalIds Open

enhancement

buildingSMART/NextGen-IFC#49 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Deprecate IfcRelConnectsPortToElement in favour of IfcRelNests only Open

enhancement

buildingSMART/NextGen-IFC#50 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Remove IfcPreDefinedPropertySet and convert into a Pset Open

enhancement

buildingSMART/NextGen-IFC#51 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
IfcRelAssigns WR1 and attribute 6 is obsolete and should be removed Open

enhancement

buildingSMART/NextGen-IFC#52 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Reuse of externally defined information concepts Open

enhancement valid proposal

buildingSMART/NextGen-IFC#53 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Harmonize the IFC UML modelling approach with MDA for GIS standards (ISO/TC 211) Open

enhancement

buildingSMART/NextGen-IFC#54 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Merge IfcConnectedFaceSet and IfcShell Open

Decision made enhancement ISG fall 2020 topic

buildingSMART/NextGen-IFC#55 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
IfcPerson.Identification should be IfcLabel because it is often a e-mail Open

enhancement ISG fall 2020 topic

buildingSMART/NextGen-IFC#56 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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