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ONE-HOUR CENTER-WALL ASSEMBLIES <br /> Roof Level Application Only:TA®roof joists with rim board carrying a small portion of roof load. <br /> Design 1R (Roof level only) 0 Roof level <br /> Intertek WNR RB 60-01 <br /> 1. 11/2"Ti®Rim Board or 1'/a"TimberStrand®LSL for depths of 16"or less; ° <br /> 1'/+"TimberStrand®LSL rim board for depths of 18"and 20". ° 0 <br /> 2. Unrated roof/ceiling I� <br /> 3. Unrated or rated gypsum board ceiling(if required) <br /> 4. One-hour-rated wall construction <br /> Two-Story Application:Double bearing wall,with rim board carrying a small portion of roof load applied by bottom chord of truss running parallel to the <br /> wall.TO®joists are either perpendicular or parallel to the wall.Blocking as required for stability. <br /> Design 2A <br /> I IIS 41L7, <br /> Intertek WNR RB 60-02 i :s��; <br /> 10 ill <br /> 1. Bottom chord of roof truss,parallel to wall I I 0 <br /> 2. One-hour-rated wall construction <br /> 3. Unrated or rated gypsum board ceiling(if required) <br /> 4. 11/2"Ti®Rim Board or 11/4"TimberStrand®LSL for depths of 16"or less; <br /> 11/4"TimberStrand®LSL rim board for depths of 18"and 20" <br /> 0 3 <br /> Multi-Story Application:Double bearing wall,with full design load on rim board applied individually to each side of the wall assembly.Blocking as <br /> required for stability,both sides of wall. <br /> Design 3A <br /> Intertek WNR RB 60-03 0 Ij—jI 0 <br /> 1. One-hour-rated roof/ceiling assembly � <br /> 2. One-hour-rated wall construction =II <br /> 3. Unrated or rated gypsum board ceiling I� <br /> 4. 1W T1®Rim Board or 1'/"TimberStrand®LSL for depths of 16"or less; ° 3 <br /> 11/4"TimberStrand®LSL rim board for depths of 18"and 20" 0 <br /> 5. Continuous 14'Type X gypsum wallboard,applied on occupancy side of both rim <br /> boards and fastened with 1W Type W screws at 12"on-center <br /> Design 3B <br /> Intertek WNR RB 60-03 <br /> wl <br /> 1. One-hour-rated roof/ceiling assembly 5 0 Iw 0 0 <br /> 2. One-hour-rated wall construction <br /> 3. Unrated or rated •.• 0 <br /> 1 gypsum board ceiling I <br /> 4. 11/a"T.10 Rim Board or 1'/"TimberStrand®LSL for depths of 16"or less; <br /> 1/a"TimberStrand®LSL rim board for depths of 18"and 20" .. <br /> 5. Continuous 5/a"Type X gypsum wallboard,applied to each rim board on occupancy 6 0 II 0 3 <br /> side and fastened with 1/"Type W screws at 12"on-center <br /> 6. Blocking <br /> Designs above as evaluated by Intertek Testing Services.For specific information on rim board Critical gypsum board placement shown in blue <br /> applications,see ICC-ES ESR-1387 in the U.S and CCMC 12627-R and 13261-R in Canada. <br /> Weyerhaeuser Fire-Rated Assemblies and Sprinkler Systems Guide TJ-1500 I May 2017 <br /> 8 <br />