Professional Structural Steel Detailing.
Zero Cost.
NexTructures is a free, open-source 3D structural steel and concrete modeling engine with Tekla Structures integration, IFC4 Open BIM support, shop drawings, and DSTV NC1 CNC fabrication export. Built for structural engineers, detailers, and fabricators.
Enterprise-Grade Workflows
3D Structural Modeling
Full 3D steel and concrete modeling with parametric connections, clash detection, and deterministic numbering. Model anything from industrial sheds to complex concrete frames.
Shop Drawing Generation
Interactive 2D shop drawing editor with dimension dragging, title block editing, and multi-format PDF export. Detail parts, assemblies, and GA drawings.
CNC Fabrication Export
Full DSTV NC1 CNC file generation and parsing for direct steel fabrication machine output. Drive drill lines and plate processors seamlessly.
Open BIM Integration
Native IFC4/IFC4x3 import/export plus Tekla Structures 2022 bidirectional C# bridge. Never get locked into proprietary file formats again.
Deep Technical Features
Built from the ground up for modern civil engineering requirements.
Parametric Connections
Intelligent baseplates, endplates, shear tabs, clip angles, gussets, and stiffeners that adapt to profile changes.
AISC & Eurocode Profiles
Catalog of 107 real W-shapes, HEA, HEB, and IPE profiles with mathematically exact radii and dimensions.
Multi-User Collaboration
Social engineering hub featuring team connections, 3D avatars at active edit spots, and integrated voice/text chat.
Spatial Clash Detection
High-performance multi-phase grid indexing and AABB analysis supporting hard, soft, and duplicate clash detection modes.
Concrete Reinforcement
Robust rebar catalog supporting ACI 318 and BS 8666 standard hooks, alongside automated bar bending schedule generation.
Assembly Numbering
Deterministic SHA-256 geometric hashing engine ensures reliable, collision-free part and assembly position marks.
Replace Expensive Licenses with Professional Open Source
NexTructures vs Tekla Structures
- Open BIM Native & 2022 Integration
- Full DSTV NC1 & Shop Drawings
- $0 vs $8,000-$15,000/year
NexTructures vs AutoCAD
- True 3D Parametric Intelligence
- Automated Drafting & Lists
- $0 vs $1,865/year
Start Detailing in Minutes
Download NexTructures for free. No registration required. No license keys. No restrictions.
Get NexTructures NowWindows 10/11 | 8 GB RAM | OpenGL 3.3+