Field notes on turning BIM models into numbers, checks and tools: IFC, Revit API, quantity take-off and automation for construction and engineering teams.
A step-by-step guide to conditional colouring of IFC models: rules with AND, OR and NOT on any attribute, material, level or property set, saved as CSV, and exported as a coloured IFC file that opens in any viewer.
Where quantities live inside an IFC file, why they are often missing or wrong, and how to turn a model into a bill of quantities in your own cost codes (Excel, BC3 / Presto or your ERP) that you can re-run on every revision.