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• p.10 FIRE AND SMOKE PROTECTION FEATURES TABLE 707.3.9 throughout with an automatic sprinkler system in i FIRE-RESISTANCE RATING REQUIREMENTS FOR FIRE accordance with Section 903.3.1.1. BARRIER ASSEMBLIES OR HORIZONTALASSEMBIJES 3ETWEEI4 FIRE AREAS 2. Openings shal not be limited to 156 squaze feet(15 OCCUPANCY GROUP J FIRE-RESISTANCE RATING Osumi ma)or an aggregate width of 25 percent of the length of the wall where the openingprotectiveis afire doer H-1,H-2 4 saving an exit enclosure. F-I,H-3,5-1 3 3. Openings shallnot be limited to 156 square feet(15 A,B.E.F-2,H-4,14-5, ( _ in')or an aggregate width of 25 percent of the length I >r1 E S-2 of the wall where doe opening protcieve has bean terdin e accordance with AS'1Tvf E 119 or UL2 63 and Cl I 1 has a minimum fire-resistance ring not less than the fire-resistance razing of the walL 707.4 Exterior walls.Where erteriorwcllsserve as apart of a 4-, Fire window assemblies permitted in atrium separa- . required fire-resistauce-ratedsbaforeril enclosure,ofseoara- Lion walls shall not be limited toa maximum aggre- don,such walls shall comply with the requirements of Section gate width of 25 percent of the length of the wail. 705 for exteriorwaAsandthe fire-resistance-rated enclosure or 5. Openings shall not be limited to 156 s care feet(15 separation requirements shah not apply. '-- oaf)or an aggregate width of 25 percent of the length Exception: Exterior waifs required to be fue-resistance of the wall where the apeaing protective is afire door rated in accordance with Section 1019 for exterior egress assembly in afire barrier separating an exit enclosure balconies, Section 1022.6 for exit enclosures and Section from an exit passageway in accordance with Section _ 1026.6 for exterior exit rases and stairways, 102i 2.L. - 707b Continnity.Firebarriers shall extend from the top of the 707.7 Penetrations.Penetrations of fire barriers shall comply floor/ceiling assembly below to the underside of the floor or with Section 713. roof sheathing, slab or deck above and shall be securely 707.7.1 Prohibited penetrations.Penetrations into an exit attached thereto,Such firebarriers shall be continuous through concealed spaces,sucias the space aboveasusoendedceiling. enclosure sae ezitpassagsuray shalibe allowed only when permitted by Section 1022.4 or 1023.6,respectively. i 7137:5:$upporting construction. The supporting con- str,rcton for afire barrier shall be protected to afford the 707.8Jofnts.:outs madcinorbetweenferebwrierr,andjoints required,fire-resistance razing of the re barrier supported made at the interserAna of fire barriers with underside of the Hollow vertical spaces within a fire barrier shall be floor or roof sheathing,slab or deck above,shall comply with 5reblocked in accordance with Section 717.2 at every floor Se_non 714. level. 707.9 Ducts and air transfer openings.Penetrations in afire Exceptions: baiter by doers and air transfer openings shall comply with Section 716. 1. The marinura required fire-resistance rating for assemblies supporting fire barriers separating - tank storage a provided for in Section.415.E 2.1 shallbe2bcus,but witless thanrequ ed by Table SECTION 708 601 for the building construction type. SHAFT ENCLOSURES 2. Shaft en-losures shall be permittedtc terminate at 708.1 General.The provisions of this section shall apply to a top enclosure complying with Section 708.12. shafts required.to protect openings and penetrations through floor/ceiling and _ooficeiling assemblies. Shaft enclosures 3. Supporting construction for 1-hour fire barriers shall be constructed asfire barriers in accordance with Section ' required by:Table 508.2.5 in buildings of Type 707 or horizontal assembliesin accordance with Section 712, BB,11ID and VB construction is notrequired to be or bath, `-c-resisance rated unless required.by other sec- tionsof this code. • 708.2 Shaft enclosure required. Openings through a 707.6 Openings. Openings in a file barrier shall be protected floor/ceiling assembly shall be protected by a shaft enclosure in accordance with Section 715.Openings shall be limited to a complying with this section. • maximum aggregate vridtb of 25 percent of the length of the Exceptions: wall, and the maximum area of any smgie opensg shall not I. A shaft enclosure is not req [Catty uirei for openings exceed 156 square feet(15 mr). Openings in exit enclosuresgithin an individual residential dwelling unit and and exit passageways shall also comply with Sections 1022.3 end 1023.5,respectively. connecting four stories or less. Exceptions: ? A shaft enclosure is not required it a building ilmw equipped throughoutwithan automatic sprinkler sys- 1. Openings shall not be limited to 156 square feet(15 rem in accordance with Section 903.3.1,1 for an agony m) where adjoining floor areas are equipped Taint opening or stairway that is not a portion of the 11n 2010 OREGON STRUCTURAL SPECIALTY CCCE