HD holdowns offer the highest allowable loads, providing high capacity for both vertical and horizontal applications. The HD19 is self-jigging, ensuring that the code-required minimum of seven bolt diameters from the end of the post is met. They can be installed back-to-back when eccentricity is an issue.
Use all specified fasteners; see Holdown and Tension Tie General Notes
Bolt holes shall be a minimum of 1/32" to a maximum of 1/16" larger than the bolt diameter (per 2015 NDS, section 12.1.3.2)
Stud bolts should be snugly tightened with standard-cut washers between the wood and nut (BPs are required in the City and County of Los Angeles)
HD and HDB holdowns are self-jigging and will ensure minimum bolt end distance when installed flush with the sill plate HD holdowns offer the highest allowable loads, providing high capacity for both vertical and horizontal applications. The HD12 and HD19 are self-jigging, ensuring that the code-required minimum of seven bolt diameters from the end of the post is met. They can be installed back-to-back when eccentricity is an issue.
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Additional Information
Manufacturer: Simpson Strong-Tie