Simpson Strong-Tie HD3B - 8-5/8" 12-Gauge Zinc-Galvanized Bolted Holdown
Product Details
The HDB is designed to provide loads for intermediate-load-range shearwalls braced-wall panels and lateral applications in wood construction. This bolted holdown is installed with bolts into studs or columns and offers low-deflection performance for a range of load requirements. The HDB is suitable for back-to-back applications where eccentricity is a concern.
Key Features
- Installed after the placement of concrete and framing is in place
- Can be installed directly on the sill plate or raised above it
- Self-jigging ensuring the code-required minimum of seven bolt diameters from the end of the post when installed flush with the sill plate
Material
Finish
Installation
- See General Notes for Holdowns and Tension Ties
- Bolt holes shall be a minimum of 1/32" to a maximum of 1/16" larger than the bolt diameter (per 2015/2018 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)
Specifications:
| Base/Seat Thickness (in.) | – |
| Ga. | 12 |
| HB (in.) | 4 3/4 |
| SB (in.) | 2 1/2 |
| W (in.) | 2 1/2 |
| H (in.) | 8 5/8 |
| B (in.) | 2 1/4 |
| CL (in.) | 1.3125 |
| SO (in.) | 3/8" |
