Early access: 30 days of Pro free. No card.

Structural Studio

Rebar drawings in minutes. Checked by you.

Describe a concrete structure or upload a structural drawing. CastPlan drafts the design checks, S-series sheets, RSIC-style placing drawings, bar list, 3D model and IFC — ready for your engineer and detailer to review.

Full Pro plan · no credit card · cancel anytime (there's nothing to cancel)

How it works

Step 1

Describe or upload

Type a short brief, or drop in a structural PDF.

Step 2

Review checks and drawings

Walk the draft calculations, sheets and bar list.

Step 3

Export

PDF, DXF, IFC and BVBS, ready for your detailer.

Who it's for

Rebar fabricatorsDetailersContractors and estimatorsSmall structural firms

What you get

Design from a brief

Describe the structure in plain words and get a first draft.

Drawings from an uploaded PDF

Read an existing structural drawing and draft the rebar.

60+ CSA A23.3 / NBC 2020 checks

Draft checks laid out for a reviewer to follow.

Calc report with clause references

Every check cites the clause it came from.

Placing drawings and bar list

RSIC-style placing sheets with a full bar list.

BVBS for bending machines

Shop-floor output for your bending equipment.

3D model and IFC4

A coordination model you can share.

DXF for CAD

Open the sheets in your own CAD tool.

Quantities and cost

Tonnage and cost roll-up per project.

Founding shops

We're opening CastPlan to a small group of Alberta rebar shops, detailers and contractors first. Founding shops get 30 days of Pro free, a direct line to the person who builds it, and a say in what we build next.

Professional review required

CastPlan is a drafting tool, not an engineer. Every output is marked "AI-generated draft — not for construction" until a licensed Professional Engineer reviews and seals it.

Read the Engineering Use Policy

Frequently asked questions

What does CastPlan make?

Draft S-series structural sheets, RSIC-style placing drawings, bar lists, BVBS, IFC and DXF files.

Can it read my existing structural drawings?

Yes. Upload a PDF and it drafts the rebar; always check what it read.

Is the output ready to build?

No. A P.Eng must review and seal it, and a detailer must check the placing drawings.

Which codes does it use?

CSA A23.3 and NBC 2020 for Canada, with RSIC detailing practice.

How much does it cost?

During early access, every new account gets a free 30-day Pro trial with no card.

Who is it for?

Rebar fabricators, detailers, contractors and estimators, and small structural firms.