![]() ![]() ![]() The SDWC15450 is to be installed through the face of 2x stud into a single 2x bottom plate over a concrete/masonry foundation.Allowable loads are for SDWC installed per the installation instructions.Loads have been increased for wind and earthquake loading (C D = 1.6) with no further increases allowed reduce where other loads govern.Loads assume minimum overhang of 3 1/2".1/4" from top plate splices for full values. The metal installation guide provided with the screw is angled at 22.5° and can be used for Configurations C and D proper installation angles for all configurations are the responsibility of the installer.To predrill through truss plate, use a 1/8" drill bit. Where truss plates must be penetrated for Configuration D, a Truss Designer approval is required in accordance with ANSI/TPI 1-2007 /2014, Section 7.5.3.4 and 8.9.2. The SDWC screws shall not interfere with other fasteners or truss plates.When cross-grain tension cannot be avoided, supplemental reinforcement shall be considered by the designer.Loads have been increased for wind and earthquake loading (C D=1.6) with no further increase allowed reduce where other loads govern.Top plate-to-stud and top-plate splice connections shall be fastened per applicable Building Code.Table loads do not apply to trusses with end-grain bearing. ![]() The number of terms that must be considered for simultaneous loading is the sole discretion of the designer and depends on the method of calculating wind forces and the utilization of the screws within the structural system. The three terms in the unity equation represent the possible generated force directions. When a screw is loaded simultaneously in more than one direction, the allowable load must be evaluated using the unity equation: (Design Uplift ÷ Allowable Uplift) + (Design F1 ÷ Allowable F1) + (Design F2 ÷ Allowable F2) ≤ 1.0.F1 and F2 are the directions parallel and perpendicular to the wall, respectively.For Uplift Connection Load Path, the designer shall verify complete continuity of the uplift load path.Installations on the exterior side of the wall are acceptable when the rafter/truss overhangs the top plates a minimum of 3 1/2". Screws are shown installed on the interior side of the wall.SDWC screws in multi-ply assemblies must be spaced a minimum of 1 1/2" o.c. The allowable uplift load for each screw shall be multiplied by 0.90, but may be limited by the capacity of the plate or the connection between the top plate to the framing below. An SDWC screw may be used in each ply of two- or three-ply rafters or trusses.When embedded, the top surface of the head shall be no more than 1/8" beyond flush. The SDWC screws shall be driven such that the shank is fully embedded in the connection members, the head is in contact with or embedded in the side member, and the point does not protrude from the lateral surface of the main member.The SDWC is to be installed through a double 2x top plate into a minimum 2x4 truss or rafter.Loads have been increased for wind and earthquake (CD=1.6) no further increases allowed.SDWC - Allowable Roof-to-Wall Connection Loads - DFL, SP, SPF, HF - Single-Screw Connections Size (in.) Fastener Production Information and Stuff & Things
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