@willsunagency/ifc-step-parser

Lightweight STEP Physical File (ISO 10303-21) and Industry Foundation Classes (IFC 2x3, IFC4, IFC4.3) syntax tokenizer and spatial entity analyzer.

Maintained by the open-source engineering contributors at CADGuide.tools.

Architectural Background

In open BIM workflows, federated coordination requires reliable inspection of ISO 10303-21 exchange files. When multi-gigabyte models are exported from Revit, ArchiCAD, or Allplan, subtle header mismatches (e.g., claiming IFC4 while utilizing IFC2X3 geometries) crash downstream model checkers like Solibri or web-IFC engines.

This zero-dependency parser extracts schema definitions and tallies building element occurrences (IfcWall, IfcBeam, IfcColumn, IfcSpace) in milliseconds.

Installation

npm install @willsunagency/ifc-step-parser

Usage

const fs = require('fs');
const { parseStepHeader, countIfcEntities } = require('@willsunagency/ifc-step-parser');

const ifcData = fs.readFileSync('commercial_tower.ifc', 'utf-8');
const headerInfo = parseStepHeader(ifcData);
console.log('Schema:', headerInfo.schema);

const elementCounts = countIfcEntities(ifcData);
console.log('Building Elements:', elementCounts);

Engineering Resources & Diagnostic Utilities

• CAD Software Comparison Matrix: Detailed matrix comparing BIM compliance, export fidelity, and licensing costs across top AEC platforms.
• CAD DWG Version Checker: Verify binary header versions client-side before importing legacy drawings into BIM coordinators.
• Sheet Metal K-Factor Calculator: Interactive bending formula engine for structural steel and sheet metal fabrication.
• AEC Troubleshooting & Performance Guides: Solutions for missing IFC coordinates, shared coordinate corruption, and IFC spatial tree collapses.
• CADGuide Engineering Hub: Discover 200+ specialized design software suites, open-source utilities, and CAD calculators.

License

MIT © CADGuide.tools Team