KasOntwerp
Greenhouse design tool (beta): electrical, water, structure; 3D and exportable drawings. Not a legally valid design.
The task
Early greenhouse planning needs electrical, water and structural figures long before a formal design exists. KasOntwerp turns a short brief into an indicative pre-design, so a grower or adviser can see what a project involves.
What I built
Three calculation modules: electrical (NEN 1010), water (BAL 2026) and structure (EN 13031-1 and Eurocode). A public example dossier shows a 2 ha tomato greenhouse with grow lights, with a 3D model, drawings and a bundled PDF and DXF package. The interface is available in Dutch and Russian.
How it works
The numbers come from deterministic calculation engines written in Python, not from a language model. An AI pipeline reads the brief and orchestrates the engines; it does not produce results itself. A FastAPI back end with PostgreSQL serves a React front end, the 3D view uses Three.js, and DXF and PDF files are generated on the server. More than 3,000 automated tests cover the code.
Screenshots
Home page (Dutch) 
Budget estimate (Dutch) 
Example project: 2 ha tomato greenhouse with project passport (Dutch)
Status and limits
Beta since 2026. Not everything is finished: IFC export is switched off, and structural results are not signed off by an engineer.
The site is in Dutch and states the limit in its own words (in English: pre-feasibility, not a legally valid design). The output is an indicative pre-design, not suitable for execution or a permit application.
Pre-feasibility, geen rechtsgeldig ontwerp.