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IfcSectionedSurface with branching longitudinal breaklines example

Status: Open.

#175 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Nov 13, 2025

Alignment-atomic-testset are invalid and obsolete

Status: Open.

#174 In buildingSMART/IFC4.x-IF;

· I-Sokolov opened on Sep 30, 2025

Question about IfcDistributionSystem

Status: Open.

#173 In buildingSMART/IFC4.x-IF;

· SoftwareMechanic opened on Apr 24, 2025

Draft IfcAlignment Implementation Guide - Request for feedback

Status: Open.

#169 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Dec 13, 2024

Request for Official Schema Update Regarding IfcSpatialZone

Status: Open.

#168 In buildingSMART/IFC4.x-IF;

· daviddelven opened on Nov 19, 2024

Clarity needed for Alignment Cant axis of rotation

Status: Open.

#160 In buildingSMART/IFC4.x-IF;

· civilx64 opened on Jul 4, 2024

Apparent Documentation Error in Concept Template for Helmert Transition Segment

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#152 In buildingSMART/IFC4.x-IF;

· civilx64 opened on Apr 23, 2024

IFC4X3_ADD2 Documentation - IfcSpace definition refers to deprecated attributes

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#150 In buildingSMART/IFC4.x-IF;

· gmn3DS opened on Apr 10, 2024

Documentation error in IfcSectionedSolidHorizontal

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#147 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Mar 21, 2024

Hand calculations suggest equations for polynomial spirals are not documented accurately.

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#146 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Feb 23, 2024

Clothoid constant defined incorrected in 4.2.2.2.3

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#141 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Jan 11, 2024

Missing concept template or IfcAlignment documentation needs revision

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#140 In buildingSMART/IFC4.x-IF;

· RickBrice opened on Jan 11, 2024