Codex BIM gathers the building facts that later stages use for construction Articles, egress, and fire-resistance work. It reads what it can from the open Revit model, then asks you to confirm the judgements the Code still requires.
Storeys
Revit levels are not the same as storeys in building height. You mark which floor plates are main storeys. Codex BIM then applies the usual exceptions, with you classifying each candidate: a rooftop enclosure used only for elevator machinery, a stairway, an elevator vestibule, or a service room is not a storey; a full enterable service floor can drop out of the count; mezzanines are reviewed against Article 3.2.1.1.
Occupancy
Each main storey gets a major occupancy (Groups A–F). A mixed floor can be zoned by room. If the building has more than one occupancy, Codex BIM takes the one covering the most floor area as the building’s major occupancy for Subsection 3.2.2.
Building height and area
You confirm average finished grade on a generated section. Height is then stated in storeys above grade and in metres (grade to the uppermost floor, and grade to the highest roof point). Building area is the greatest horizontal area above grade, to the outside of the exterior walls, not Revit’s room area.
Street faces
On a live map of the site, you confirm which streets qualify under Article 3.2.2.10. The building is classified as facing one, two, or three streets.
Each step explains the rule it is applying, with a short diagram or note, so you can check the reading before you continue. Nothing here is an approval. The six confirmed facts, major occupancy, storeys, street faces, building area, and the two height measures, are what Construction Advisor uses next.