CD Holdown

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

Install the holdowns using anchor bolts or alternate anchorage calculated to resist the tension load for your specific application. Use steel nylon locking nuts or thread adhesive to minimize the chance of nut spin. Anchor bolt washer is not required. For the screwed holdowns, secure the CD holdown to the steel framing member by filling all the pre-punched holes with #14 self-tapping screws to achieve listed capacities. For the bolted holdowns, secure the CD holdown to the steel framing member with 3/4" and 1/2" diameter bolts in the pre-punched holes per the design load table to achieve listed capacities. Field drill holes in the framing member as required to accommodate the required bolts. Boundary members (back-to-back studs) shall be designed by a qualified professional. To tie back-to-back stud members together, the Designer must determine the fasteners required to bind members to act as one unit. CD holdowns can be welded per Designer's recommendation and specification. Welding procedures shall be qualified as specified in AWS D1.3. Welded connections used for cold-formed steel structural members in which the thickness of the thinnest connected part is 0.18 inch or less shall comply to AISI S100-2016 w/ S2-20 specification Section J2. Reference section R603.9.4.2 of the International Residential Code (IRC) for holdown requirements in residential applications. Consult the engineer of record for commercial applications.

ClarkDietrich Suggests Instead

Connectors they list as alternatives for this connection.

• EasyClip™ T-Series™ Tall Anchor Clip
• EasyClip™ T-Series™ Tall Anchor Clip

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.

• BIMBIM / Revit
• SustainabilityPROSustainability
• ClarkDietrich Holdown Catalog PageCatalog page
• ASTM A36Document
• ASTM A1011Document
• IRC R603.9.4.2Document
• SDS For ASTM A1011 Steel Framing ProductsSafety data sheet
• SDS For ASTM A36 Steel Framing ProductsSafety data sheet
• 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

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

• CD Holdown Bolted Detail 0PDFDWGDXF
• CD Holdown Bolted HDS Detail 0PDFDWGDXF
• Gusset Plates 2PDFDWGDXF
• HDS-Shear Wall Post-1PDFDWGDXF
• HDS-Shear Wall Post-2PDFDWGDXF
• Hold Down Detail 1PDFDWGDXF
• Hold Down Detail 2PDFDWGDXF
• Hold Down Detail 3PDFDWGDXF