Alpine

4'6 Framing with Trusses " Framing with Trusses Gable Framing ' the type of siding, either horizontal or vertical, and the need for a louver in the end of the building. The type of gable required is controlled by the end overhang and the need to match a soffit line. 13 Gable ends when not configured in triangles as a truss, are more related to stud walls. However, they are structural elements and are analyzed to resist wind and seismic loads as noted on the truss design. The web design or framing pattern is determined by Valley Trusses Girder Truss A 6'3 " Standard Gable Girder Truss B Stud spacing as necessary to support siding. Clearspan Gable Used when the gable wall does not provide continuous bearing support for the gable framing. Standard Gable Framed For Rectangular Louver Dropped Top Chord Gable Illustrated with studs. Also available with framing for rectangular, square or triangular louver. Standard Gable Framed For Triangular Louver Drop Top Chord Gable 2-16d @ 24" O.C. 2x4 Ladder Frame (Outlooker) Valley Trusses Girder Truss A Truss Gable End Standard Truss 2x4 Block Standard Truss Rafter Girder Trusses Rafter 2x4 Ladder Frame (Outlooker) Standard Gable 2x4 Ladder Frame (Outlooker) Gable End A reinforcing member may be required on some gable end vertical members. 8 www.itwbcg.com 2-16d @ 24" O.C. Truss 2x Block 8" Typical Girder trusses have two main purposes. The first (Girder Truss A) exists in L, T, H and U shaped buildings to eliminate the need for an interior load-bearing wall. The girder is used to support one end of the intersecting trusses. The trusses are carried on the bottom chord of the girder by hangers. The second use of a girder truss (Girder Truss B) is to support perpendicular framing in hip roofs. In some plans girder truss A and B may be one in the same. The hip framing is carried on both the top and bottom chords of the girder truss by nailing or by hangers. Girder trusses, because of the heavy loads they support, are generally multiple units with larger chord members than the adjacent trusses. Generally, because of the construction of girders, overhangs are not used. The girder truss may also be designed for "drag strut" loads which are calculated and specified by the building designer. Standard Truss Flush Cut Truss Valley Frames Sheathing Girder Truss A Valley Framing Sets Valley framing sets are primarily used to form a ridge line by framing over the main roof where perpendicular building sections intersect. Valley trusses are set directly on the main trusses. Sheathing is required for main trusses with 2x4 top chords, and is recommended for other top chord sizes, under valley frames to continue the lateral bracing of the main truss top chords. The bottom chords of the valley trusses are generally beveled to match the slope of the roof below. www.itwbcg.com 5

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