Commercial Strapping

Codes are what ClarkDietrich publishes as available, not a promise of local stock — tell the desk the connection you have and we'll confirm what's on a shelf. A code with no sheet of its own can be generated from ClarkDietrich SubmittalPro ↗.

Installation

Strap bridging for bottom of floor joists Spacing of bridging must be calculated based on the required strength. In general, bridging is installed at a maximum of 8' O.C. spacing pendicular to the joists. For example, an 18' joist span would require two bridging runs at 6' O.C. spacing. Where the sub-floor or decking does not provide lateral support, strap must also be installed on the top flange of the joist. Install immediately after joists are erected and before construction loads are applied. Solid blocking is field cut from track or joist sections. Horizontal strap lateral bracing for wall studs Lateral bracing consists of a field-cut stud or track for solid blocking and steel strap bracing on both flanges of the studs. Solid blocking is placed at each end of the wall, adjacent to wall openings and 8' O.C. maximum. The blocking is attached to each adjacent stud via EasyClip™ E- or S- Series™ clips, or when a track is used, the flanges are cut, the web bent and a minimum 4" overlap is used to secure the track block to the studs. Strap bracing, 2" wide and 20-gauge (33 mil) minimum, is fastened to each solid block and stud flange. Tension strapping for shear wall x-bracing Straps are either attached directly to the compression studs or are attached via Gusset Plates. Compression studs must be anchored to the foundation, normally with ClarkDietrich Holdowns. For multi-story construction, the uplift loads are extremely high. It is not uncommon to require 20,000 to 40,000 pounds of uplift force at these connections. Since ClarkDietrich Holdowns are not designed to resist this magnitude of force, it is recommended that embedded plates be installed prior to pouring the concrete foundation. A heavy steel assembly is then welded to the embedded plate and to the compression studs. Caution: Racking loads are first transferred to the roof or floor decking and then to the shearwalls (X-bracing). The X-bracing then relies on a proper foundation to resist uplift and shear forces. In order for the system to function properly, the load path from the roof or floor deck to the shearwalls to the foundation must be complete. This normally requires additional bracing, blocking, track and rim splices, drag struts, uplift anchors and heavy-duty foundations.

Documents

Served straight from ClarkDietrich so you always get the current revision. Each code's own submittal sheet is on its row in the table above.

• SustainabilityPROSustainability
• Commercial Strapping Catalog PageCatalog page
• AISI S100-16 (2020) w/S2-20Code report
• SDS For ASTM A1003 Steel Framing ProductsSafety data sheet
• AIA / CEUDocument
• CAD Details LibraryCAD detail
• Clip Express Product CatalogCatalog page
• Architectural SpecsSpecification
• CAD DetailsCAD detail

CAD Details

14 details for this connection, each published as a PDF to read and a DWG and DXF to draw with.

• Block and Strap Bridging 2PDFDWGDXF
• Block and Strap BridgingPDFDWGDXF
• Deep Leg Deflection Track with Strapping%26BlockingPDFDWGDXF
• Deep Leg Deflection Track with StrappingPDFDWGDXF
• HDS-Shear Wall Post-1PDFDWGDXF
• HDS-Shear Wall Post-2PDFDWGDXF
• Shear Anchor Detail at Base 1PDFDWGDXF
• Shear Anchor Detail at Base 2PDFDWGDXF
• Shear Anchor Detail at Base 3PDFDWGDXF
• Shear Anchor Detail at Base 4PDFDWGDXF
• Shear Anchor Detail at Base 5PDFDWGDXF
• Shear Wall Elevation 1PDFDWGDXF
• Shear Wall Elevation 2PDFDWGDXF
• Sloped Deep Leg Deflection Track %26 TRAKLOC Connection Detail 0PDFDWGDXF