{"id":"mech-010","license":"CC-BY-4.0","data":{"title":"National WUI intermix vs interface vs FHSZ vs 40 m (three nested scales)","file":"/diagrams/mech-010-three-wildfire-map-objects.svg","caption":"FA Exhibit MECH-010. National WUI, California FHSZ, and Cohen 40 meters.","alt":"Three equal NTS panels distinguish the Radeloff 2005 national intermix/interface method, California Fire Hazard Severity Zone classes, and Cohen’s home-plus-surrounding-40-meters ignition context. The objects can overlap geographically but do not nest by definition.","kind":"diagram","rights":"cc-by-4.0","depicts":"National WUI intermix/interface, California FHSZ, and Cohen’s 40 m home-ignitability context answer different questions at different scales","identifiableAddress":false,"exifGpsStripped":true,"derivation":"AFTER RADELOFF 2005 + CAL FIRE FHSZ FAQ 2024 + COHEN 2000 · ORIGINAL LINE ART.","technicalReviewer":"Grayson Graham","lastVerified":"2026-08-25T00:00:00.000Z"}}