Fasteners
Bolts
Simpson Strong-Tie
$3-$15 eachAnchor Bolts for Concrete Foundation Connections
Anchor bolts create the critical connection between wood framing and concrete foundations. Whether cast-in-place or retrofit-installed, they transfer uplift, shear, and lateral loads from the structure to the foundation per building code requirements.
Key Features
- Cast-in-place and retrofit options
- Transfers uplift and shear loads
- Meets IRC and IBC building codes
- Multiple diameters and lengths
- Galvanized for concrete compatibility
Specifications
Material: Carbon steel
galvanized | Diameters: 1/2in
5/8in
3/4in
1in | Lengths: 6in to 24in | Types: J-bolt
L-bolt
headed
all-thread | Code: IRC R403.1.6
Best For
Foundation-to-framing connections
Sill plate anchorage
Hold-down bolt installations
Post base anchoring
Compatible Materials
Poured concrete
CMU block walls
Sill plates
Mudsills
Steel post bases
Pros & Cons
Pros
- ✓ Code-required structural connection
- ✓ Multiple install methods
- ✓ Available for new and retrofit
- ✓ Proven technology
Cons
- ✗ Cast-in-place must be precisely positioned
- ✗ Retrofit options more expensive
- ✗ Misaligned bolts need correction
Installation Tips
Use template or string line for alignment. Leave 2-1/2 to 3in of thread above concrete. Verify bolt locations against wall layout before concrete sets.
Frequently Asked Questions
IRC requires min 1/2in diameter, 7in embedment, max 6ft spacing, one within 12in of each sill plate end. High-wind zones have added requirements.
Yes. Retrofit with epoxy-set threaded rod, wedge anchors, or concrete screws.