3.1.8.4.Determination of Ratings and Classifications

(1) Except as permitted by Sentences (2) and 3.1.8.16.(1), the fire-protection rating of a closure shall be determined in accordance with (a) CAN/ULC-S104, “Standard Method for Fire Tests of Door Assemblies,” (b) CAN/ULC-S106, “Standard Method for Fire Tests of Window and Glass Block Assemblies,” or (c) CAN/ULC-S112, “Standard Method for Fire Test of Fire Damper Assemblies.” (See Articles 3.1.8.17. to 3.1.8.19. for additional requirements for closures.) (2) Except as permitted by Sentence 3.1.8.12.(1), the fire-protection rating of a closure shall conform to Table 3.1.8.4. for the required fire-resistance rating of the fire separation. (3) The leakage rate of smoke dampers and combination smoke/fire dampers shall (a) be determined in accordance with the applicable provisions in CAN/ULC-S112.1, “Standard for Leakage Rated Dampers for Use in Smoke Control Systems,” and (b) conform to Class I, II or III of that standard. (4) The leakage rate of a door assembly shall be determined in accordance with ANSI/UL-1784, “Standard for Air Leakage Tests of Door Assemblies and Other Opening Protectives.” Table 3.1.8.4. Fire-Protection Rating of Closures Forming Part of Sentence 3.1.8.4.(2) Fire-Resistance Rating of Fire Separation Minimum Fire-Protection Rating of Closure 30 min 20 min 45 min 45 min 1h 45 min 1.5 h 1h 2h 1.5 h 3h 2h 4h 3h