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FIRE AND SMOKE PROTECTION FEATURES • 716.6.1 Testing under positive pressure. NFPA 257 or 716.6.8 Labeling requirements. Fire-protection-rated UL 9 shall evaluate fire-protection-rated glazing under glazing shall bear a label or other identification showing t the positive pressure. Within the first 10 minutes of a test,the the name of the manufacturer,the test standard and infor- pressure in the furnace shall be adjusted so at least two- mation required in Table 716.6 that shall be issued by an thirds of the test specimen is above the neutral pressure approved agency and shall be permanently identified on I plane,and the neutral pressure plane shall be maintained at the glazing. that height for the balance of the test. 9. 716.6.2 Nonsymmetrical glazing systems.Nonsymmetri- cal fire-protection-rated glazing systems in fire partitions, SECTION 717 fire barriers or in exterior walls with a fire separation dis- DUCTS AND AIR TRANSFER OPENINGS tance of 5 feet(1524 mm)or less pursuant to Section 705 717.1 General. The provisions of this section shall govern shall be tested with both faces exposed to the furnace, and the protection of duct penetrations and air transfer openings the assigned fire protection rating shall be the shortest in assemblies required to be protected and duct penetrations duration obtained from the two tests conducted in compli- in nonfire-resistance-rated floor assemblies. ance with NFPA 257 or UL 9. 717.1.1 Ducts that penetrate fire-resistance-rated 716.6.3 Safety glazing. Fire-protection-rated glazing assemblies without dampers. Ducts that penetrate fire- installed in fire window assemblies in areas subject to resistance-rated assemblies and are not required by this human impact in hazardous locations shall comply with section to have dampers shall comply with the require- » Chapter 24. meets of Sections 714.2 through 714.3.3.Ducts that pene- 716.6.4 Glass and glazing.Glazing in fire window assem- trate horizontal assemblies not required to be contained within a shaft and not required by this section to have blies shall be fire-protection-rated glazing installed in dampers shall comply with the requirements of Sections accordance with and complying with the size limitations 714.4 through 714.4.2.2. set forth in NFPA 80. 717.1.1,1 Ducts that penetrate nonfire-resistance- 716.6.5 Installation.Fire-protection-rated glazing shall be rated assemblies.The space around a duct penetrating in the fixed position or be automatic-closing and shall be a nonfire-resistance-rated floor assembly shall comply installed in approved frames. with Section 717.6.3. 716.6.6 Window mullions.Metal mullions that exceed a 717.2 Installation. Fire dampers, smoke dampers, combina- nominal height of 12 feet (3658 mm) shall be protected tion fire/smoke dampers and ceiling radiation dampers with materials to afford the same fire-resistance rating as located within air distribution and smoke control systems required for the wall construction in which the protective shall be installed in accordance with the requirements of this is located. section, the manufacturer's installation instructions and the 716.6.7 Interior fire window assemblies. Fire-protec- dampers' listing. tion-rated glazing used in fire window assemblies located 717.2.1 Smoke control system. Where the installation of in fire partitions andfire barriers shall be limited to use in a fire damper will interfere with the operation of a assemblies with a maximum fire-resistance rating of 1 required smoke control system in accordance with Section hour in accordance with this section. 909, approved alternative protection shall be utilized. 716.6.7.1 Where '/a hour fire protection window Where mechanical systems including ducts and dampers assemblies permitted. Fire-protection-rated glazing utilized for normal building ventilation serve as part of the requiring 45-minute opening protection in accordance smoke control system, the expected performance of these with Table 716.6 shall be limited to fire partitions systems in smoke control mode shall be addressed in the designed in accordance with Section 708 andfire barri- rational analysis required by Section 909.4. ers utilized in the applications set forth in Sections 717.2.2 Hazardous exhaust ducts.Fire dampers for haz- 707.3.6 and 707.3.8 where the fire-resistance rating ardous exhaust duct systems shall comply with the does not exceed 1 hour. Fire-resistance-rated glazing Mechanical Code. assemblies tested in accordance with ASTM E 119 or 717.3 Damper testing,ratings and actuation.Damper test- UL 263 shall not be subject to the limitations of this section. ing, ratings and actuation shall be in accordance with Sec- tions 717.3.1 through 717.3.3. 716.6.7.2 Area limitations.The total area of the glaz- 717.3.1 Damper testing. Dampers shall be listed and ing in fire-protection-rated windows assemblies shall labeled in accordance with the standards in this section. I not exceed 25 percent of the area of a common wall Fire dampers shall comply with the requirements of UL with any room. 555.Only fire dampers labeled for use in dynamic systems 716.6.7.3 Where I/3-hour fire-protection window shall be installed in heating, ventilation and air-condition- assemblies permitted. Fire-protection-rated glazing ing systems designed to operate with fans on during a fire. shall be permitted in window assemblies tested to Smoke dampers shall comply with the requirements of UL NFPA 257 or UL 9 in smoke barriers and fire parti- 555S. Combination fire/smoke dampers shall comply with teens requiring 1/4-hour opening protection in actor- the requirements of both UL 555 and UL 555S. Ceiling I dance with Table 716.6. radiation dampers shall comply with the requirements of 2019 OREGON STRUCTURAL SPECIALTY CODE 147