Wire nodes
Connect input, math, structural, section and results nodes on a visual canvas, in the style of Grasshopper or Dynamo.
Open source · Runs in your browser
Parametric structural modeling, built from nodes.
ParamEle is an open-source web tool for conventional structures such as reinforced-concrete frames. Wire nodes in a visual graph, review the 3D model, solve it in your browser and take it to SAP2000, ETABS or SkyCiv S3D.
- No installation
- PyNite finite-element solver
- Exports to SAP2000 · ETABS · SkyCiv S3D
- English · Español
01How it works
From a graph to a structural model, in four steps.
Every element of the model comes from a node. Change one input and everything downstream updates.
01graph 02model Review the 3D model
The graph is evaluated into nodes, members, plates, supports and loads, drawn live in an interactive 3D view.
03analysis Solve
Solve in your browser with PyNite or in the cloud with SkyCiv: reactions, member forces and displacements for each load combination.
04.$2k · S3D Export
Take the model to SAP2000, ETABS or CSiBridge as a CSI .$2k file, or open it in SkyCiv S3D, and keep working in the tools you already know.
02Parametric studies
One graph, many design variants.
A slider node expands into every combination of its parameters. Each combination becomes its own model, solved and compared with the rest.
- Sweep spans, heights, sections or loads with range sliders.
- Combine several sliders to cover the whole design space.
- Plot results across variants and see how one parameter drives the response.
03Interoperability
Works with the software you already use.
Generate the model parametrically in ParamEle, then take it to CSI software or SkyCiv, where your office already does analysis and design.
- Export · .$2k
SAP2000, ETABS and CSiBridge
Export the model as a CSI .$2k text file.
- Import · .$2k
Existing CSI models
Bring models you already have in .$2k format into ParamEle.
- SkyCiv · S3D
SkyCiv S3D models
Import S3D models into ParamEle, and open models solved with SkyCiv in SkyCiv S3D.
- Import · DXF
Geometry from CAD
Draw in CAD and import the DXF: lines become members.
Round trip with SkyCiv
From the graph to SkyCiv S3D, with no manual steps.
Choose SkyCiv as the solver engine: the model is solved in the cloud, saved to your SkyCiv account and opens directly in SkyCiv S3D, where you can review the results or carry on with the design.
- 01
Model in ParamEle
parametric graph → S3D model
- 02
Solve with SkyCiv
SkyCiv API · your account
- 03
Open in SkyCiv S3D
results · design
04Runs in your browser
A finite-element solver, with nothing to install.
ParamEle runs PyNite, an open-source Python finite-element library, inside your browser through Pyodide and WebAssembly. The analysis runs on your own machine, in a background Web Worker.
Three solver engines
- 01
PyNite in the browserDefault
No server and no installation. This is the default.
- 02
PyNite on a local server
The same solver as a local Node and Express service.
- 03
SkyCiv in the cloud
Solve with your SkyCiv account. The model is saved to your account, ready to open in SkyCiv S3D.
Editor
graph → S3D model
Web Worker
background thread
Pyodide
Python on WebAssembly
PyNite
finite-element analysis
- → reactions · member forces · displacements
Workspace
Built for everyday work.
Accounts
Sign in and keep your models in the cloud.
Versions
Save versions with a message and go back to any of them.
Sharing and roles
Share a model and decide what each person can do.
Spanish and English
The whole interface is available in both languages.
05Open source
Code you can read, verify and extend.
Engineers should be able to check how their results are computed. ParamEle's source is public on GitHub, so you can see exactly how each model is built and solved.
- Every node is a React component with its own Exec function.
- The structural model is readable JSON, in SkyCiv's S3D format.
- The solver is PyNite, an open finite-element library.
osasanchezme/paramele / src/flow-nodes/basicStructural.js
9const node_target_ids = ["x-value", "y-value", "z-value"];⋯22function StructuralNodeExec(args) {23 let full_args = node_target_ids;24 let structural_args = utils.convertNodeToStructuralArgs(args, full_args);25 return {26 "node_out-id": {27 ...structural_args,28 },29 "node_list_out-ids": [],30 };31}06FAQ
What engineers usually ask.
Yes. ParamEle is open source and free to use in your browser. Solving with SkyCiv requires a SkyCiv account.
No. The app and its default solver run in a modern web browser. The local solver server is optional.
You can export to the CSI .$2k format, used by SAP2000, ETABS and CSiBridge, and open models solved with SkyCiv in SkyCiv S3D. You can import .$2k files, SkyCiv S3D models and DXF files; in DXF files, lines become members.
Choose SkyCiv as the solver engine and solve with your account. The model is saved to your SkyCiv account and opens directly in SkyCiv S3D, where you can review the results or carry on with the design.
Reactions, member forces and displacements for each load combination, computed with the PyNite finite-element library.
Conventional structures such as reinforced-concrete frames: nodes, members, plates, supports, and point loads, distributed loads and moments.
As with any analysis tool, a qualified engineer should review the model and verify the results before using them in a design.
The app and this site are available in Spanish and English.
Build your first parametric model.
Open ParamEle in your browser and start wiring nodes. There is nothing to install.