12989299 - Laserfiche WebLink

Home Browse Search

' FIRE AND SMOKE PROTECTION FEATURES fire-resistant joint system designed to resist the passage of time period at least equal to the fire-resistance rating of the fire for a time period not less than the required fire-resistance floor assembly. Height and fire-resistance requirements for I�• rating of the wall, floor or roof in or between which it is curtain wall spandrels shall comply with Section 705.8.5. installed. Fire-resistant joint systems shall be tested in accor- Exception: Voids created at the intersection of the exte- I dance with Section 715.3. rior curtain wall assemblies and such floor assemblies Exception: Fire-resistant joint systems shall not be where the vision glass extends to the finished floor level required for joints in all of the following locations: shall be permitted to be sealed with an approved material 1. Floors within a single dwelling unit. to prevent the interior spread of fire.Such material shall be securely installed and capable of preventing the passage of 2. Floors where the joint is protected by a shaft enclo- flame and hot gases sufficient to ignite cotton waste where sure in accordance with Section 713. subjected to ASTM E 119 time-temperature fire condi- 3. Floors within atriums where the space adjacent to tions under a minimum positive pressure differential of the atrium is included in the volume of the atrium 0.01 inch (0.254 mm) of water column (2.5 Pa) for the for smoke control purposes. time period at least equal to the fire-resistance rating of 4. Floors within malls. the floor assembly. 715.4.1 Exterior curtain wall/nonfire-resistance-rated 5. Floors and ramps within open and enclosed parking floor assembly intersections. Voids created at the inter- garages or structures constructed in accordance with section of exterior curtain wall assemblies and nonlife- Sections 406.5 and 406.6,respectively. resistance-rated floor or floor/ceiling assemblies shall be 6. Mezzanine floors. sealed with an approved material or system to retard the 7. Walls that are permitted to have unprotected open- interior spread of fire and hot gases between stories. ings. 715.5 Spandrel wall.Height and fire-resistance requirements S. Roofs where openings are permitted. for curtain wall spandrels shall comply with Section 705.8.5. Where Section 705.8.5 does not require a fire-resistance- 9. Control joints not exceeding a maximum width of rated spandrel wall, the requirements of Section 715.4 shall 0.625 inch(15.9 mm) and tested in accordance with still apply to the intersection between the spandrel wall and ASTM E 119 or UL 263. the floor. 715.1.1 Curtain wall assembly. The void created at the 715.6 Fire-resistant joint systems in smoke barriers.Fire- t intersection of a floor/ceiling assembly and an exterior resistant joint systems in smoke barriers, and joints at the curtain wall assembly shall be protected in accordance intersection of a horizontal smoke barrier and an exterior cur- with Section 715.4. tainwall, shall be tested in accordance with the requirements 715.2 Installation. A fire-resistant joint system shall be of UL 2079 for air leakage. The L rating of the joint system securely installed in accordance with the listing criteria in or shall not exceed 5 cfm per linear foot (0.00775 m3/s m) of on the joint for its entire length so as not to dislodge,loosen joint at 0.30 inch(7.47 Pa)of water for both the ambient tem- or otherwise impair its ability to accommodate expected perature and elevated temperature tests. building movements and to resist the passage of fire and hot gases. SECTION 716 715.3 Fire test criteria. Fire-resistant joint systems shall be OPENING PROTECTIVES tested in accordance with the requirements of either ASTM E 1966 or UL 2079. Nonsymmetrical wall joint systems shall 716.1 General. Opening protectives required by other sec- be tested with both faces exposed to the furnace, and the bons of this code shall comply with the provisions of this sec- assigned fire-resistance rating shall be the shortest duration Lion. obtained from the two tests. When evidence is furnished to 716.2 Fire-resistance-rated glazing. Fire-resistance-rated show that the wall was tested with the least fire-resistant side glazing tested as part of a fue-resistance-rated wall assembly exposed to the furnace, subject to acceptance of the building in accordance with ASTM E 119 or UL 263 and labeled in official,the wall need not be subjected to tests from the oppo- accordance with Section 703.6 shall be permitted in fire site side. doors and fire window assemblies where tested and installed Exception: For exterior walls with a horizontal fire sepa- in accordance with their listings and shall not otherwise be ration distance greater than 5 feet (1524 mm), the joint required to comply with this section. system shall be required to be tested for interior fire expo- 716.3 Marking fire-rated glazing assemblies. Fire-rated sure only. glazing assemblies shall be marked in accordance with 715.4 Exterior curtain wall/floor intersection.Where fireTables 716.3,716.5,and 716.6. resistance-rated floor or floor/ceiling assemblies are required, 716.3.1 Fire-rated glazing that exceeds the code voids created at the intersection of the exterior curtain wall requirements. Fire-rated glazing assemblies marked as Cassemblies and such floor assemblies shall be sealed with an complying with hose stream requirements(H)shall be per- approved system to prevent the interior spread of fire. mitred in applications that do not require compliance with Such systems shall be securely installed and tested in -I hose stream requirements. Fire-rated glazing assemblies accordance with ASTM E 2307 to provide an F rating for a marked as complying with temperature rise requirements 2014 OREGON STRUCTURAL SPECIALTY CODE 141