| Feature | AC25 + Eptar | AC26 + Eptar | |--------|--------------|----------------| | | Manual polyline limits | Parametric edge detection | | Rebar bending schedules | Separate Excel export | Native BIMcloud-linked schedules | | Hooks & bends preview | 2D symbolic | Real-time 3D in ArchiCAD 26’s enhanced 3D window | | Performance | Lag on >500 rebars | Smooth pan/zoom up to 2,000 rebars | | IFC export type | IfcReBar (often lost) | IfcReBar with correct shape parameters |
In the world of Building Information Modeling (BIM), few tasks remain as notoriously time-consuming as 3D reinforcement detailing. For years, structural engineers have struggled to seamlessly transition from analysis software to detailed, fabrication-ready rebar models. Enter —a specialized add-on that has become the gold standard for concrete reinforcement within the Graphisoft ecosystem. With the release of ArchiCAD 26 , Eptar has rolled out critical updates that change the game for rebar modeling, scheduling, and clash detection. eptar reinforcement archicad 26
However, for professionals working in AC26 today, the Eptar workflow is mature, stable, and proven. Yes — if you are a structural engineer or BIM detailer handling concrete structures regularly. | Feature | AC25 + Eptar | AC26
or work with steel structures.
| Feature | Native Rebar Tool | Eptar | |--------|----------------|-------| | Learning curve | Gentle | Steep but powerful | | Automatic beam reinforcement | No (manual each bar) | Yes (full cage in one click) | | Code-based spacing rules | Partial | Full (including seismic zones) | | Bar bending schedule | Basic table | Customizable to local standards | | Cost | Included in AC26 license | Additional license (approx. €600/year) | With the release of ArchiCAD 26 , Eptar
Additionally, Eptar for AC26 introduces — where identical bars in a column array are stored as a single object in the BIM database, drastically reducing file size. Advanced Tips for Power Users 1. Custom Shapes via Python Eptar allows you to script complex rebar shapes (e.g., seismic hooks, U-bars). In ArchiCAD 26, the Python console ( Ctrl+Shift+P ) can now be used to define Eptar.Shape() classes. 2. Linking to Structural Analysis If you use Cype 2023, you can directly import a .csi or .cyp analysis file. Eptar will read the required reinforcement area (As,req) and automatically adjust bar sizing and spacing to meet it — no manual entry. 3. Template Workflows Save your Eptar settings as an .epl template. For a multi-story building, load the template on each floor’s beams. Maintains consistent cover, bar diameters, and hook angles. Common Issues & Fixes (Troubleshooting) "Eptar is not compatible with this version of ArchiCAD" Cause: You installed a version for AC24 or AC25. Fix: Download the Eptar 2023a for ArchiCAD 26 from the official Cype portal. Rebars disappear after moving a host beam Cause: Associativity is turned off. Fix: In Eptar Settings → Advanced → check "Maintain association with host" . Then use the Update Eptar Elements command after moving. Extremely slow regeneration on slabs Cause: Too many individual bars vs. bar sets. Fix: Use "Reinforcement Pattern" instead of "Explicit Bars" . AC26 handles patterns far better. Real-World Project: High-Rise Core Wall A recent case study from a Brazilian engineering firm used Eptar Reinforcement in ArchiCAD 26 to detail the shear walls and coupling beams of a 30-story tower.
Published: October 14, 2023 | Category: BIM & Structural Engineering