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IFC5 Proposal: Digital Twin External Reference

Status: Open.

#127 In buildingSMART/IFC5-development;

· Isaina opened on Jun 12, 2026

IFCX viewer: rendering validation errors via innerHTML allows XSS from IFCX content

Status: Open.

#125 In buildingSMART/IFC5-development;

· louistrue opened on May 19, 2026

Is the double-wall.ifcx file OK?

Status: Open.

#124 In buildingSMART/IFC5-development;

· HavardLine opened on Apr 29, 2026

Linked data compatibility or extensibility

WGITechnical domain working group item.Technical domain working group item.

Status: Open.

#123 In buildingSMART/IFC5-development;

· Drshelden opened on Mar 18, 2026

ifcx schema vs JSON-schema

schema

Status: Open.

#74 In buildingSMART/IFC5-development;

· janbrouwer opened on Jul 2, 2025

Class definition in the IFC schema

schema

Status: Open.

#73 In buildingSMART/IFC5-development;

· atomczak opened on Jul 2, 2025

Properties of a class

schema

Status: Open.

#72 In buildingSMART/IFC5-development;

· atomczak opened on Jul 2, 2025

Numeric precision

Status: Open.

#69 In buildingSMART/IFC5-development;

· atomczak opened on Jun 27, 2025

path pattern : regular expression vs. examples

schema

Status: Open.

#63 In buildingSMART/IFC5-development;

· Airy59 opened on Jun 27, 2025

[ How to find the actual path of a node ]

Status: Open.

#56 In buildingSMART/IFC5-development;

· michelangelo-acca opened on Jun 23, 2025

inherited children mesh nodes with same path

Status: Open.

#54 In buildingSMART/IFC5-development;

· michelangelo-acca opened on Jun 16, 2025

Viewer didn't load the model --> Should imports, data and schemas be optional in the schema?

needs decision

schema

Status: Open.

#53 In buildingSMART/IFC5-development;

· youshengCode opened on Jun 16, 2025