Product Description
The Simpson BC40Z BC ZMAX Galvanized Post Base for 4x by Simpson Strong-Tie is a light-duty post base designed to secure the bottom of 4x posts or columns to concrete - ideal for decks, patio covers, and similar top-supported structures. Built from 18-gauge steel with a ZMAX galvanized finish, this post base delivers superior corrosion resistance for exterior and treated-wood applications while providing a stronger, more reliable connection than angled nailing or screw fastening alone.
Key Features
- Provides a positive connection for a post to a wood deck
- Stronger than angled nailing or screw fastening
- Reduces the chance of the post splitting and eliminates nailing into end grain
- Not recommended for non top-supported installations (such as fences or unbraced carports)
- Nominal post size: 4x
- Made from 18-gauge steel
- ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
Specifications
- MPN: BC40Z
- Brand: Simpson Strong-Tie
- Member Size: 4x
- Gauge: 18
- Coating / Finish: ZMAX
- Install With: 16d common nails or #10 x 1-1/2 in. Strong-Drive SD screws
- Country of Origin: United States
Approved Applications
- Securing posts or columns to concrete for decks and patio covers
- Light post base connections where top-supported installation is present
- Exterior applications and installations involving treated wood, where enhanced corrosion resistance is required
Downloads and Resources
Frequently Asked Questions
- What post size is the BC40Z designed for?
- The BC40Z is designed for a nominal 4x post size, making it suitable for standard 4x lumber used in decks, patio covers, and similar light post base applications.
- Why is ZMAX galvanization important for this post base?
- ZMAX galvanization offers extra corrosion resistance, making the BC40Z especially well-suited for exterior applications and installations that involve treated wood, where standard finishes may degrade more quickly over time.
- What fasteners should be used to install the BC40Z?
- The BC40Z should be installed with 16d common nails or #10 x 1-1/2 in. Strong-Drive SD screws, as specified by Simpson Strong-Tie for this connector.
- Can the BC40Z be used for fences or unbraced carports?
- No. The BC40Z is not recommended for non top-supported installations such as fences or unbraced carports, as post bases do not provide adequate resistance to prevent members from rotating about the base in those applications.
Note: Product dimensions and/or nail or screw holes may differ from picture.
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