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Notes

The Rendly blog.

Field notes on proptech — maps, BIM, fire protection, and the occasional strong opinion about file formats.

Evacuation plans are stuck on the wall — so we digitised them

Most evacuation plans are laminated snapshots of a building that no longer exists. Here's why we built utrym.nu, and what a living fire-safety plan looks like.

A field guide to GIS file formats

Shapefile refuses to die, GeoPackage deserves more love, and GeoJSON is doing fine. A pragmatic tour of the formats you'll actually meet in the wild.

BIM belongs to property owners, not just construction sites

Building information models are usually treated as a construction deliverable and then forgotten. That's backwards — the owner holds the asset for fifty years.