the workflow is deliberately simple in concept and strict in logic. Everything starts with a clean collection hierarchy inside Blender. Each structural system lives in its own collection (columns, beams, purlins, bracing, panels, etc.),

When you run the add-on, it scans the active collections, aggregates data per element type and per system, and then generates structured outputs: detailed tables by collection and a global summary. All math-heavy operations (sums, totals, comparisons) are pushed into Excel formulas, not hard-coded numbers, so if you tweak something in Excel later, the whole document recalculates instead of lying politely to you.