How it works

PDF in. Fabrication drawings out.
Four steps, no detailer.

FrameAI is a pipeline, not a tool. You drop a structural steel drawing PDF at one end. At the other end you get Eurocode-validated fabrication drawings, a BIM model, and CNC files — while you sleep. Here is exactly what happens inside.

Upload your structural steel PDF

Drop any PDF with structural steel content — general arrangement drawings, fabrication specs, or scanned engineer's sketches. Multi-page PDFs work. The file lands in Polsia R2 storage. FrameAI queues the job and begins processing immediately. No waiting, no form-filling, no manual data entry.

Accepted: GA drawings · Steel section schedules · Scanned sketches (300 dpi or better)
Limit: 50 MB · Multi-page: yes · Batch: yes (up to 20 PDFs at once)

R2 Upload Batch support

GPT-4o vision reads every page

Each page is rendered at high resolution and sent to GPT-4o vision. The model reads beam and column designations (e.g. IPE 270, HEA 300), material grades (S275, S355), span lengths, connection geometry, and bolt patterns — returning structured JSON. It handles hand-annotated sketches, rotated text, and mixed projection conventions. If it sees something ambiguous, it flags it rather than guessing.

Extracts: section profile · material grade · span length · connection type · bolt spec
Handles: orthographic drawings · isometric sketches · multi-view sheets · rotated annotations

GPT-4o Vision Structured JSON output

Eurocode calcs run automatically

Extracted members are validated against the relevant Eurocode standards in one pass. No spreadsheets. No manual input. Everything runs server-side in seconds. Results include pass/fail status, governing utilisation ratios, and the exact clause reference that drove the check — so you can hand-sign the output.

EN 1993-1-1 §5.5 section class · §6.2 moment + shear capacity · §6.3 buckling
EN 1993-1-8 §3 bolt group checks · base plates · end-plate moment connections
EN 1993-1-10 material toughness · EN 1090-2 execution class (EXC1–EXC4)
Optional: EN 1992-1-1 RC · EN 1994-1-1 composite · EN 1995-1-1 timber · EN 1998-1 seismic

EN 1993-1-1 EN 1993-1-8 EN 1090-2 EXC National Annexes

Fabrication-ready outputs land in your dashboard

When the calcs pass, FrameAI generates every output a fabrication shop needs — in one pass, with no human in the loop. Every file is linked in your jobs dashboard. Pro and Studio accounts can export all formats; the free tier includes the fabrication PDF and DXF.

Fabrication PDF DXF R12 IFC 4 BIM BOM Excel DSTV NC1

What you get out

Fabrication PDF

Part marks, weld symbols, and dimensions on every member. Print-ready A3 or A1.

DXF R12 Shop Drawings

Open in AutoCAD, BricsCAD, or any CAD tool. One DXF per member, named by part mark.

IFC 4 BIM Model

Full 3D model with section properties and connection geometry. Opens in Revit, Tekla, Navisworks.

BOM Excel

EN 10365 weights, surface areas, and material grades. Subtotals per section type. Firm branding on Studio.

DSTV NC1 (CNC)

7th-edition NC1 ASCII files per part mark. Load directly into Ficep, Kaltenbach, or Voortman CNC lines.