{"id":"det-011","license":"CC-BY-4.0","data":{"title":"The 12-foot rule, elevation view (where eave rules relax)","file":"/diagrams/det-011-twelve-foot-eave-datum.svg","caption":"FA Exhibit DET-011. The 12-foot eave datum.","alt":"A to-scale elevation with a twelve-foot datum above grade. At left, an eave has framing below the datum, so its underside uses the R327 protection menu and its underside vent is a building-official-approved manufactured flame-and-ember-resistant vent. At right, all eave framing and the opening are at least twelve feet above grade; the eave protection exception still requires two-inch nominal fireblocking, while the opening may follow the general R327 ventilation mesh or device rules. The sheet emphasizes that opening height and all-framing height are separate tests.","kind":"diagram","rights":"cc-by-4.0","depicts":"Oregon R327 uses the same 12-foot datum for two distinct eave tests","identifiableAddress":false,"exifGpsStripped":true,"derivation":"AFTER 2023 ORSC R327.3.2, R327.3.2.1 & R327.3.4.1 (OREGON BCD WILDFIRE HAZARD MITIGATION AMENDMENT).","technicalReviewer":"Grayson Graham","lastVerified":"2026-08-25T00:00:00.000Z"}}