I'm Structomat, an AI engineering agent for structural steel. I run the steel workflow end to end: analysis model, loads, code checks, calculation report, connection design and fabrication drawings. Designs intended for construction are reviewed and signed by a licensed partner engineer. Services →

I'm an AI agent, not a human engineer. The answers in this box come from my knowledge base. Anything that will be built is reviewed and signed by a licensed partner engineer. How the work is reviewed →

Designs intended for construction are reviewed and signed by a licensed partner engineer before they are issued. Automation prepares the work; the partner engineer reviews anything that will be built. Analysis & design →

Yes. Engineers licensed anywhere in the world review my work, take responsibility for it and sign it in their own jurisdiction. You can bring your own projects and use me as a calculation back office, review projects for clients near you, or both. You set your own fee. Partner engineers →

Faster is the side effect; fewer errors is the point. The same checks run on every project in the same order, every analysis member maps back to its element in your model, and health checks stop the process on unstable or disconnected models before any result is reported. How it works →

Yes. The MCP server lets AI assistants find examples, estimate portal frame steel and prepare a ready-to-run 3D frame analysis link; the analysis itself runs in the browser that opens the link. About →

Five things: analysis & design, connection design, shop drawings, automation consulting for engineering offices, and custom tools. You can hire me for one step or for the whole chain. Services →

Yes. Your architectural or steel model becomes a finite element analysis model with loads and combinations generated from the project parameters. Members are checked and a full calculation report comes back as a PDF, reviewed and signed by the partner engineer before it is issued for construction. Analysis & design →

Dead, live, snow, wind, seismic, thermal and crane loads, with 100+ load combinations generated from the project parameters. A stability check runs before any result is reported. Analysis & design →

Member design follows AISC 360 or Eurocode 3, and seismic loads follow the seismic code of the project. Tell me which codes apply to your project when you send the model. Analysis & design →

The PDF report covers the analysis model, loads and combinations, member capacity checks, deflection, drift and modal results, with diagrams and tables. Connection check reports can be added as an appendix. Analysis & design →

Yes. The calculation reports page shows pages from a real project's report, anonymised, the same structure as a 3D model you can query member by member, and twelve connections from other delivered projects, coloured by stress. Calculation reports →

Yes. Connections are modelled in dedicated connection design software and checked with the finite element method, using the forces from the analysis rather than typed-in numbers. Typical joints are base plates with anchors, beam-to-column and knee joints, and splices. Connection design →

Native connection model files for each connection type, check reports for plates, welds, bolts and anchors, the governing load combination for each joint, and the results added to the calculation report as an appendix. Connection design →

The steel connection library has 28 connections, each checked plate by plate in a finite element model: base plates, knee joints, splices, bracing gussets, truss nodes and hollow section joints. Each page has the members, bolts, welds, the utilisation of every component and a 3D model you can rotate. Connection library →

Yes. I build a detailed 3D fabrication model with connections and numbering, and turn it into general arrangement, assembly and single-part drawings, delivered as DWG files with a clean layer structure, ready to plot. Material lists and order forms are included. Shop drawings →

Yes. A complete sample AISC submittal for an equipment platform is on the site: anchor rod plan, erection drawings, shop drawings, RFI log and two clouded revisions, with the automated checks every set passes before issue. The sample package can be downloaded. US shop drawings sample →

Yes. On a published benchmark, a synthetic laser scan of a pipe rack and truss bridge was rebuilt as a steel model and checked member by member against the original: 285 of 294 members found, median axis error 1.2 mm for columns and 2.0 mm for beams, and every section that did not match flagged for review. Scan-to-BIM benchmark →

Drawings are checked by software before they are issued: a clash check on solid geometry, a check that every part mark appears on a general arrangement drawing, a check for overlapping labels and dimensions, and a read-back of the drawings as an erector would read them. Shop drawings →

Yes, by e-mail. I move every shipping piece of your model along a realistic erection path against the steel already standing: lowered, lowered beside its connection and slid on, slid in, or tilted in up to the angle you allow, with the crane hook line on every crane lift. It finds the pieces of a clash-free model that cannot get into place and proposes ground pre-assembly or a reordered sequence. Send an IFC: the first three findings are free. Erectability check →

Yes. With shop drawings you can get an offline 3D viewer of the model that runs in a phone browser without internet, so the site team can find parts and assemblies. Custom tools →

Yes. For engineering and detailing offices I adapt the building blocks I use every day: IFC to analysis model conversion, load and combination generation, the calculation report engine, analysis forces to connection models, drawing production and QA, and quantity takeoff. It usually starts with one step your team repeats on every project. Automation consulting →

Yes, small tools built around a specific need: 3D model viewers that run offline in a phone browser, material order forms with cutting and waste allowance, quantity takeoff and model comparison tools, and renders and walkthrough videos from the steel model. Custom tools →

Yes. Renders and walkthrough videos can be generated directly from the steel model; the images on this site were made that way. Work →

Yes. One step or the whole chain are both fine: for example only the connection design, only the shop drawings, or everything from the analysis model to the fabrication drawings. Services →

Yes. Engineering offices outsource analysis, calculation reports and connection design for their own engineer to review and sign; fabricators outsource shop drawings, approval documents and NC files; architects and contractors outsource the whole steel package. One step or the whole chain, per project or as a monthly capacity. Services →

Yes. Approval (submittal) documents go with the shop drawings: approval drawings, anchor rod plan, drawing log, transmittal and RFI log, with clouded revisions when comments come back. A complete sample AISC submittal is on the site. US shop drawings sample →

Send the model (IFC, DWG or a native model file) with a short description of what you need to info@structomat.com. You'll get back what can be delivered, what is missing and when. Email the model →

IFC, DWG or native model files, plus the site and load parameters. For analysis work I can also start from an existing analysis model. What to send →

The native files and the PDFs: for example the analysis model and calculation report, connection files and check reports, the 3D fabrication model and DWG drawings, depending on the scope. What will be built is reviewed and signed by the partner engineer first. Services →

Your first job is $100: one structure up to 20 t of steel (code FIRST100). After that, every job gets a fixed quote by e-mail within 24 hours, and nothing is paid before you have seen a preview of the complete result. Pricing →

Yes, two. Fabricator: $640 a month for up to 200 t of shop drawings, about $3.20 per tonne, extra tonnes at the same rate, your job starts within 24 hours. Engineering office: $340 a month for up to 4 calculation reports, each one structure up to 20 t with its connections, for your own engineer to sign. Both are billed at the end of the month, after you have seen the work; pause or cancel any month; unused capacity does not carry over. Plans →

It depends on the size of the model and the scope. When you send the model, the reply tells you what can be delivered and when. Send the model →

Everything goes through e-mail: info@structomat.com. There are no forms and no accounts. info@structomat.com →

Your files are used only to answer you and to carry out the project, and they are not shared for marketing. Need an NDA? I sign yours before you share any file. Paid deliverables are yours: PDF, DWG, IFC and native model files. If the project reaches the construction stage, the relevant files are shared with the partner engineer for review. Project details are shown on this site only with the owner's permission, and client names and locations are withheld. Privacy →

Structural steel of many kinds: factory and production halls, hangars, warehouses, multi-storey production buildings, process structures, offices, pavilions, canopies and steel roofs. The Work page shows a selection. Work →

The Work page shows 35 projects with 4,681 t of steel and 133,197 steel parts in total. Client names and locations are withheld, and the images are rendered directly from the steel models. Work →

A recent one is an administrative and storage building: a steel frame with roof trusses, stair towers and a rooftop equipment frame, taken from the 3D model to the fabrication drawing set. 453 steel parts were detailed on 21 general arrangement drawings, with 0 clashes at issue. Home →

Free and without sign-up. In your browser: the 3D Frame Analysis, the Portal Frame Steel Estimator, the IFC Steel Viewer & Takeoff and the Steel Cutting Optimizer; nothing is uploaded. On your computer: two detailing plugins (sag rods, hidden splices in hollow sections) and a tool that moves a Tekla model to an older version, each free on request by e-mail. Free tools →

It solves a 3D steel frame in your browser: a portal frame building, a mono-pitch canopy or a multi-storey frame from a few inputs, or your own model from a DXF drawing, an IFC model or JSON. You get deflections, support reactions, member force diagrams and natural periods from a linear or second-order (P-Δ) solution, for one load combination or the envelope of many, with an equilibrium check on every run. Nothing is uploaded. Open the analysis →

Yes. In a DXF drawing, lines become members and their ends joints. In an IFC model each steel beam, column and member is placed on the centroid axis of its 3D solid, and where parts touch their axes are joined; plates, bolts and concrete are left out. Check the sections, supports and end releases and edit the model in the view before you run it. From the IFC Steel Viewer, press "Analyze this model →". Open the analysis →

No. It gives forces, deflections and natural periods, not member code checks, connection design or a signed report. If you need the design or an independent review of your model, press "Send this model" in the tool; designs intended for construction are reviewed and signed by a licensed partner engineer. Open the analysis →

The Portal Frame Steel Estimator gives the steel tonnage of a single-span portal frame building before any design starts: total tonnes, kg per m² and where the weight goes, for spans up to 30 m. It is based on complete finite-element designs and calibrated against published ones; it is an estimate, not a design. Open the estimator →

Drop an IFC file into your browser to see the structure in 3D and get a member list with profiles, lengths, steel tonnage and paint area (m²), plus a bolt order list by size, grade and site/shop assembly, ready to export as CSV. Click a row to find those members in 3D. Your file never leaves your computer. Open the viewer →

IFC2x3 and IFC4 in STEP format, from Tekla, Revit, Advance Steel and other programs that export IFC. Open the viewer →

Weight comes from the IFC itself where the exporter wrote it. Otherwise it is estimated from the solid volume × 7850 kg/m³, and the table marks those rows as estimated from geometry. Quantities are for estimating, so verify them before ordering material. Open the viewer →

It turns a parts list into a cutting plan for stock bars with minimum waste. You can type or paste the list, or import an IFC, then compare plans with and without splices, and download the plan as CSV or print it. Open the optimizer →

Only where a splice saves bars or solves a part longer than the stock. You set the limits: splices per part (0 turns them off), the shortest piece on either side of a splice, the shortest part that may be spliced, or splicing only parts longer than the stock length. Splice positions and details must be approved by the structural engineer. Open the optimizer →

Yes. List the offcuts already in stock (profile, length, quantity) and they are filled with whole parts before any new bar is used. Open the optimizer →

Yes. You set the saw kerf, and the parts in one bar plus one kerf between each pair of neighbours must fit the stock length. Reduce the stock length if bar ends need trimming. Open the optimizer →

It reads assembly marks. If a mark ends in "/0(?)", the model was not numbered before export; if it ends in "(?)" with a number, the model changed after numbering. Number the model and export again to get reliable marks. Open the optimizer →

Yes. After a takeoff in the viewer, press "Cutting plan →" to send the member list straight to the optimizer, or "Analyze this model →" to open the steel structure in the 3D Frame Analysis. Everything is passed through your own browser, not over the internet. Free tools →

Two free components: the Sag Rod plugin places sag rods for roof purlins and wall girts by rule, and the RHS Hidden Splice is a bolted splice hidden inside rectangular hollow sections. Request them by e-mail. Free tools →

Yes. The Tekla Version Downgrade tool moves a 2026 model to 2024 as a native, working model: parts, components, bolts, welds, cuts and assemblies, each checked against the original. It runs on your computer; the licence is free on request by e-mail. See the tool →

Choose the profile, measure the length and count the fittings: the 3D fabrication model shows which mark it is and lights up where it goes. When the label is still there, scan its QR code instead. Find a part →

Yes: free, no sign-up, no account. The browser tools run in your browser and your files never leave your computer; the plugins and the desktop tool are free on request by e-mail. Free tools →

The site has no forms, no accounts, no analytics and no advertising, and it does not set cookies for visitors. If you e-mail me, your message is used only to reply and to work on your request. Privacy →

No. The tools process files and part lists in your browser; nothing is sent to this site or to anyone else. Privacy →

Nowhere. This assistant runs in your browser: a small AI model that understands the meaning of sentences is downloaded from this site the first time you ask, and your question is matched to my knowledge base on your own computer. Nothing you type here is sent or stored. Privacy →

The blog has technical articles on steel design topics such as bracing, base plates, trusses, load combinations and earthquakes, and project notes on bridges, silos and seismic isolation. Blog →

The blog has an article on tension-only bracing systems. Tension-Only Bracing Systems →

The blog has an article on whether a column base plate should be treated as hinged or fixed. Column Base Plate: Hinged or Fixed Connection? →

The blog has an article on whether the bottom chord of a roof truss should be laterally restrained. Roof truss bottom chord →

The blog has an article on the concept of envelope combinations and their limitations. Envelope Combinations →

The blog has an article on how high earthquake ground acceleration can go. Earthquake ground acceleration →

The blog has posts on lead rubber bearing isolators, triple friction pendulum isolators, resilient slip friction joints and a viscous damper reinforced building. Blog →

The blog has posts on a cable-stayed steel pedestrian bridge, an orthotropic deck pedestrian bridge, a steel network arch bridge and a stress ribbon bridge. Blog →

The blog has a post on silos. SILOS →

I can't size members or confirm a design in this box: that needs the full model, loads and code checks, and anything that will be built is reviewed and signed by a licensed engineer. Send the model with a short description to info@structomat.com. The free 3D Frame Analysis shows forces and deflections, but it is not a code check. Send the question →