A general-purpose 3D frame & truss solver
Draw any structure, assign real steel sections, apply loads, and solve it — all in the browser. Sutranet CAD pairs a fast in-house structural solver with a modern 3D modeling canvas so you can go from sketch to member forces, deflections, and code checks in seconds. And we're steadily extending it into a purpose-built toolkit for telecom mounts.
Model, load, and solve — end to end
A general-purpose solver for 3D frames and trusses — with a growing set of generators tuned for telecom mounts.
3D modeling canvas
Snap nodes to a grid, draw members, and edit the model directly in 3D with realistic section profiles.
In-house structural solver
A sparse 3D frame solver computes displacements, reactions, and member forces — validated against commercial tools.
AISC / IS code checks
Automatic capacity and utilization checks for I-shapes, channels, angles, tees, pipe, and box sections.
Static & modal analysis
Run multiple load cases and combinations, P-Delta effects, and modal frequencies with force diagrams.
Section property calculator
Compute area, inertia, radii of gyration, and moduli from nominal dimensions — no lookup tables needed.
Import & export
Bring in RISA-3D and JSON models, load custom section databases, and export your job back out.
Verification examples
26 verification problems, solved by the same solver you use and compared value by value with STAAD.Pro, OpenSees, SAP2000, SeismoStruct, textbook answers and the AISC Design Examples. Each one has a downloadable model to reproduce it in the app.
Open the verification examplesFrom sketch to results in four steps
Build
Place nodes and members on the work plane, or use a generator — including telecom mount templates like cross-arm, V-frame, and stand-off.
Assign
Pick materials and steel sections, set supports, and define load cases and combinations.
Solve
Run static, P-Delta, or modal analysis across every selected load case in one click.
Review
Inspect deflections, utilization coloring, force diagrams, and code-check ratios.
Learn it in five short videos
A narrated walkthrough from the first node to P-Delta and modal analysis. About 20 minutes in total, on YouTube.
Introduction
What Sutranet CAD is and does, and what each part of the series covers.
Getting started
Model a steel portal frame from the first node to the design check, and save your work.
Build faster
Grow that frame into a two-bay, three-storey building with Copy, Mirror, Select & Show and quick edits.
Import a STAAD.Pro model
Open a .std file, run it, and compare the answers with STAAD.Pro side by side.
Advanced analysis
Load combinations, P-Delta, modal analysis, member offsets and the beta angle.
Ready to model your structure?
No install, no setup. Open the app and start drawing any frame or truss — your first analysis is a minute away.
Launch Sutranet CAD