New articles related to the Stair and Railing tools and an article explaining the workflow of modelling the Floating Floor:

Stair Tool Basics – Modelling Stairs with Monolith Terazzo Finish (Continuous Layer Finish) – Read this article
Stair Tool Basics – How to create Metal Plate and Metal Pan Stairs – Read this article
Modeling of floating floor screed edge detail in ARCHICAD – Read this article