This is because fire exposure from the exterior of a building is not likely to be as severe as that from a fire in an interior room or compartment. Since test methods have changed little over the years, results based on earlier or more recent editions of the CAN/ULC-S101 standard are often comparable. A designer may determine the factored resistance for a beam or column by referring to CSA O86 Canadian Wood Council’s Wood Design Manual. The previous section on fire-resistance ratings deals with the determination of fire-resistance ratings from standard tests. 540 0 obj <>stream Fire Rating: 1.5 Hour … As a result, the NBC has hundreds of different wall and floor assemblies with assigned fire-resistance ratings and sound transmission ratings. Gypsum Seal opening Resilient mounts Caulk 6 Wall & Floor Assembly Guide Construction Designs for Acoustical Control Sound can transmit The calculation method in Appendix D determines a fire-resistance rating for glulam beams and columns based on exposure to fire from three or four sides. Metl-Spans ThermalSafe® mineral wool panel achieves a one-, two- or three-hour fire rating for walls and 1.5 hours for ceilings to help ensure your material, property and people are safeguarded from fire. Whether an authority having jurisdiction accepts the results of tests based on these standards depends primarily on the official’s familiarity with them. Type X fire rated gypsum drywall that is 5/8 -inch (15.9mm) thick and installed on each side of nominal 2-inch x 4-inch (38x89mm) wood studs spaced 16-inch (400mm) o.c. The NBC recognizes this characteristic and allows unprotected wood members, including floor and roof decks, that meet the minimum sizes for heavy timber construction to be used both where a 45-minute fire-resistance rating is required and in many noncombustible buildings. Wall Assemblies USG provides resources here for our UL wall assemblies for seamless integration into any construction project. They can, however, restrict innovation because designers use assemblies which have already been tested rather than pay to have new assemblies evaluated. 0000005907 00000 n 2-1/2 in. 0000002440 00000 n These results are published in the NBC Table A-9.10.3.1.A. Listed assemblies must be used with the same materials and installation methods as those tested. FIGURE 3: 2-HOUR FIRE-RESISTANCE RATED EXTERIOR WALL ASSEMBLY Use where wall is required to be rated from the exterior and interior sides. A multitude of fire-resistance tests have been conducted over the last 70 years by North American laboratories. trailer 0000005686 00000 n Large wood members have an inherent fire resistance because: These factors result in unprotected members that can stay in place for a considerable time when exposed to fire. 0000006394 00000 n 0000005258 00000 n 8/7/2018 BXUV.U411 - Fire-resistance Ratings - ANSI/UL 263 An area separation wall is a component of townhouse construction, used where townhouse share a common wall. This includes fire and sound resistance tables describing various wall and floor assemblies of generic building materials that assign specific fire-resistance ratings to the assemblies. 515 0 obj <> endobj 0000003129 00000 n These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. All-new fire-rated roof-ceiling assembly files. Wall fixtures 24" min. ; and. The NBC permits the authority having jurisdiction to accept results of fire tests performed according to other standards. For further information, refer to the following resources: Wood Design Manual (Canadian Wood Council), Fire Safety Design in Buildings (Canadian Wood Council), CAN/ULC-S101 Standard Method of Fire Endurance Tests of Building Construction and Materials, ASTM E119 Standard Test Methods for Fire Tests of Building Construction and Materials. Over the last two decades a number of large research projects were conducted at the National Research Council of Canada (NRC) on light-frame wall and floor assemblies, looking at both fire resistance and sound transmission. However, a design submitted as being “based on” is not the design “listed” by ULC. Wood and Steel Framed Walls, Floors and Roofs. Fire-Rated, Glass Ceramic for up to 2-Hour Assemblies when used with TYCO WS Specific Application Window Sprinklers Fire-Rating: Up to 120 Minutes FEATURES SURFACE GRADES DOCUMENTATION* AND Alternative methods for determining fire-resistance ratings are permitted as well. The assemblies must conform to all requirements in NBCC, Division B, Appendix D-2.3. Studs to be cut 3/4 in. Fire Resistance Design Requirements for Canada Canadian Model Codes require fire resistance designs to meet the requirements of CAN/ULC‐ S101; therefore all cUL designs are tested to meet the requirements of this standard. %%EOF Sultan, M. A., Latour, J. C., Leroux, P., Monette, R. C., Séguin, Y. P., and Henrie, J. P.; “RR-184: Results of Fire Resistance Tests on Full-Scale Floor Assemblies – Phase II”, Institute for Research in Construction, National Research Council Canada, March 2005. 0000001306 00000 n As well, the CSA O86 standard includes an informative Annex B that provides a method to calculate fire-resistance ratings for large cross-section wood elements, such as beams and columns of glued-laminated timber, solid-sawn heavy timber and structural composite lumber. 0000003356 00000 n This component additive method (CAM) can be used when it is clear that the fire-resistance rating of an assembly depends strictly on the specification and arrangement of materials for which nationally recognized standards exist. Building codes have special requirements for the walls separating adjacent townhome units, and the primary requirement is that they serve as two-hour firewallsmeaning that fire in one unit will require at least two hours before breaking through the wall.