Generic frames are schematic. Opening heights remain assumed until verified.
Select a sheet, calibrate a known span, and trace wall centerlines. Nothing is extracted automatically. Reopen the same PDF to restore saved models for its sheets.
Heights, wall thickness, window sills, opening heads and porch geometry are schematic. Stairs are omitted. This is not an automatic PDF-to-BIM conversion or a construction-ready model.
Room colors and labels are a fixed reference; they do not recompute room boundaries after wall edits. GLB units are meters; editable JSON uses feet. Source and assumptions accompany the model.