IFC export doesn't write a circuit's rating

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
49/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Active
Tech stack
typescript
Domain
backend-api-design

Research direction

Start in packages/bim-ifc/src/export.ts:940-951, where service link properties are written, and trace how the IFC export represents IfcDistributionCircuit and property sets. Check whether the electrical add-on exposes the rating and its unit, then see if a standard property set fits. Done means the exported circuit carries its rating with a unit; the broader add-on mechanism is an inferred direction.

Written by the indexing model from the issue text.

Description

enhancement
The problem

As an electrical engineer, I want each circuit in the IFC file to carry its rating, so that a reader can check it against the board and the loads. The model stores "electrical": {"ratingA": 20} on each service_link (observed). The exported circuit system carries only (observed):

circuit sets: {"MutinyBIM_Circuit":{"Adapter":"electrical","Positions":"1","Role":"branch"}}

Where in the code (observed, at 94513ba): packages/bim-ifc/src/export.ts:940-951 writes Role, Adapter and Positions for each service link, and nothing from its electrical block.

An AI agent helped find this and ran the repro on its own machine against 94513ba; I reviewed the output.

What you would like to happen

The circuit's rating (20 A) is written with its unit, in a standard pset if one fits IfcDistributionCircuit. Otherwise in MutinyBIM_Circuit. Other fields of the trade block might come too (poles, wire size), if the model has them (not checked).

The shared idea underneath

Service links are a kernel idea, and the electrical block comes from an add-on. A general way for the add-on that owns a link's block to name its IFC properties would cover plumbing and mechanical links too (inferred).

Discipline

Electrical

Area

Sheets, PDF or IFC

Engineering content
  • This involves an engineering calculation, code rule or design default (it will need review by a licensed professional).
Helping
  • I would like to work on this.
Dominant language
TypeScript
Stars
85
Forks
10
Avg merge
1h 28m
Merged PRs (30d)
20

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