Building loads
for structural engineers
Snow, wind, imposed and own loads to PN-EN – the Eurocodes with the Polish National Annexes – with a 3D model, a material database and a printout. A free, open source program for Windows, macOS and Linux.
What KAYENN does
A program for characteristic loads in which every result is backed by the code – a clause, a table or a formula.
❄️ Snow
PN-EN 1991-1-3 with the National Annex: flat, mono- and duopitch, multispan and cylindrical roofs, parapets and obstructions; drifts, overhangs, exceptional drifts.
💨 Wind
PN-EN 1991-1-4 with the National Annex: various roof shapes, canopies, all wind directions, pressure and suction variants, orography.
🏢 Imposed loads
PN-EN 1991-1-1: categories A–K, horizontal loads on partitions, reduction of qk, forklifts and barriers.
🧱 Own loads
A material database from Annex A of PN-EN 1991-1-1 with over two thousand steel sections. You can extend it as you like.
🗺️ Zone map
Pick the location on the map (also by the land parcel number) – the program sets the snow and wind zones and the altitude above sea level.
🖨️ Project and printout
All load cases in one file, groups, undo / redo, a command console and a printout with calculations and 3D drawings.
See what you calculate
The load distribution on a 3D model of the building – with dimensions you change with a click.
- snow and wind load zones on the roof and walls,
- rotate and zoom with the mouse and gestures,
- several views of the same load case.
Every result with its basis
Next to each value the program gives the clause, table or formula of the code it comes from – easy to check.
- you choose only what the code allows,
- all values are characteristic (no γ or ψ),
- the sources of the values go onto the printout too.
Download
The current version is on the GitHub Releases page.
| System | File | Installation |
|---|---|---|
| Windows 10 / 11 | …-windows-x64-setup.exe…-windows-x64.zip (portable) | run the installer |
| macOS 12+ | …-macos-arm64.dmg (M1, M2…)…-macos-x64.dmg (Intel) | drag to Applications |
| Linux | …_amd64.deb…-linux-x86_64.tar.gz | sudo apt install ./kayenn_….deb |
A testing release
This is version 0.2.0 – many bugs have already been fixed, but one person cannot catch everything. Test the program and report a problem, especially a wrong calculation result (with the clause of the code).
If you think this project is worth developing and you would like it to become something really good, you can support it financially – the Sponsor button in the repository.