HDB Bolted Holdown

Quick Overview

Simpson Strong-Tie offers a wide variety of bolted holdowns offering low-deflection performance for a range of load requirements. The HD9B is a holdown designed for use in shearwalls and braced-wall panels, as well as other lateral applications. The HD9B bolted holdowns incorporate the proven design of our HDQ8 SDS-style holdown and feature a unique seat design which greatly minimizes deflection under load. HDB holdowns 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 directly on the sill plate or raised above it and are suitable for back-to-back applications where eccentricity is a concern. HDBs are designed to provide loads for intermediate-load-range shearwalls, braced-wall panels and lateral applications. HD holdowns offer the highest allowable loads, providing high capacity for both vertical and horizontal applications. met. They can be installed back-to-back when eccentricity is an issue.