Seismic and Hurricane Ties (CDH2, CDH2A, CDH2.5, CDH3)

CDH3

CDH3

ATTACHES AND secures TRUSSES AND RAFTERS TO BUILDING STRUCTURE

ClarkDietrich Seismic and Hurricane Ties are designed to provide wind and seismic resistance for trusses and rafters.

Description

Quick and efficient, these versatile connectors can also be used for general tie-down purposes, strong back attachments and as all-purpose ties where one member crosses another.

The CDH2 & CDH2A seismic and hurricane ties are formed from a flat plate into an A-shaped section. The plate has a right-angle bend along its longitudinal axis to permit straddling a top plate.

The CDH2.5 and the CDH3 are twisted strap ties that are used to attach a rafter to the side of the top plate. All connections are shipped in equal quantities of separate rights and lefts.

Coating: G90
 

Alternative Products

Technical Data
Installation

Installation

CDH2 or CDH2A

Place the tie so one end fits flush against the roof framing member and the other fits flush against the web of the wall stud. Attach the tie to the side of the rafter at the top and to the sides of the stud immediately below the top plate at the bottom. Fill all prepunched holes with a minimum of #10 self-drilling screws.

CDH2.5 or CDH3

Place the tie so the top fits securely against the roof framing member and the bottom fits securely against the top plate and flange of the wall stud. Attach the tie to the rafter at the top and to the sides of the top plate and stud immediately below. Fill all prepunched holes with a minimum #10 self-drilling screws.

Reference section R 603.8.3.2 of the International Residential Code (IRC) or the engineer of records specification.

Resources

ASTM & Code Standards:

  • Sheet steel meets or exceeds requirements of ASTM A1003
  • Galvanized coating meets or exceeds requirements of ASTM A653
Submittals

PRoduct submittal SHeets

Click the below Product Code to view Submittal/Tech Datasheet

Product code Gauge Mils Design thickness (in) Size (in)
CDH2 18 43 0.0451 1-9/16 x 9-7/16 x 1-9/16
CDH2A 18 43 0.0451 1-9/16 x 9-7/16 x 1-9/16
CDH2.5 18 43 0.0451 1-9/16 x 5-7/16 x 1-9/16
CDH3 18 43 0.0451 1-9/16 x 4-5/8 x 1-9/16

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