1. Validate and measure
The engine identifies invalid or incomplete geometry, records estimate gaps, and measures relevant lengths, areas, volumes, counts, slopes, openings, and utility routes.
Estimator methodology
Every result is geometry + formula + visible assumptions.
This methodology explains how AtriBuild is designed to move from project geometry to quantity and optional cost ranges without hiding uncertainty.
2. Apply a versioned assembly
Each wall, roof, slab, finish, and utility route references an assembly recipe with a stable formula version. Compatible openings are subtracted only where the formula requires it.
3. Add explicit waste and packaging
Waste percentages are visible. Raw geometry remains available beside package-rounded purchase quantities so a user can understand the difference.
4. Apply an eligible dataset
Price application is a separate step. Production cost claims require a licensed, dated, versioned baseline with source and geography. Development/test fixtures are rejected at the production boundary until that prerequisite is supplied.
5. Report coverage and gaps
Coverage is shown by category. Skipped or unknown inputs name the dependent categories that are omitted. No blank input is treated as zero or silently replaced.