{"id":"mech-004","license":"CC-BY-4.0","data":{"title":"E108 roof test: spread / intermittent / brand, one rig three modes","file":"/diagrams/mech-004-e108-three-modes.svg","caption":"FA Exhibit MECH-004. E108 roof test: spread, intermittent, brand.","alt":"A conceptual inclined roof-test deck routes to three separate mode cards for spread of flame, intermittent flame, and burning brand. Apparatus geometry and schedules are intentionally omitted.","kind":"diagram","rights":"cc-by-4.0","depicts":"The public ASTM E108 scope and UL testing page group three key exterior roof-covering fire-test modes—spread of flame, intermittent flame, and burning brand—around an inclined test-deck exposure","identifiableAddress":false,"exifGpsStripped":true,"derivation":"ASTM E108-25 PUBLIC SCOPE · UL SOLUTIONS · FEMA P-737.","technicalReviewer":"Grayson Graham","lastVerified":"2026-08-25T00:00:00.000Z"}}