The Simpson 6 x 12 Column Base CB612 is a heavy-duty post base connector from Simpson, purpose-built to anchor 6 x 12 lumber, glulam, and engineered wood columns directly to concrete foundations. Whether the installation calls for a cast-in-place or wet-set approach, this column base is positioned with the bottom of the base plate flush with the concrete surface, delivering full post bearing and the structural reliability that demanding load applications require.

Key Features

• Compatible with lumber, glulam, and engineered wood products - gives contractors and builders flexibility to use the column material that best fits the structural design without requiring a different connector.
• Cast-in-place or wet-set installation - the base plate sits flush with the concrete surface in either method, ensuring full post bearing and a clean, code-compliant finished connection.
• Increased uplift resistance - engineered to handle wind and seismic loading, making this post base a dependable choice for structures in high-demand or code-regulated environments.
• Bolt hole locations meet code-required spacing - fastener placement is optimized for load capacity, reducing guesswork during installation and supporting a straightforward inspection process.
• Simpson gray paint finish - provides a consistent, durable surface treatment suited to the conditions typical of foundation-level column connections.

Why This Product

• Built for large-column structural applications - the CB612 is specifically sized for 6 x 12 columns, meaning it is engineered from the ground up for the load demands that come with heavier timber or engineered wood framing, not adapted from a smaller connector.
• Installation method flexibility without compromise - supporting both cast-in-place and wet-set concrete work, this column base fits the actual sequencing of real job sites, reducing the need to redesign around connector limitations.
• Confidence in wind and seismic zones - the built-in uplift resistance means structural engineers and contractors can specify this post base for projects where lateral and uplift forces are a primary design concern.
• American-made quality from a trusted connector brand - produced by Simpson and made in the United States, the CB612 reflects the manufacturing standards that professionals rely on for load-critical connections.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB612
• Nominal Column Size: 6 x 12
• Finish: Simpson Strong-Tie gray paint
• Fasteners Required: Bolts - (2) 5/8" (sold separately)
• Width 1: 5-1/2 in.
• Width 2: 11-1/2 in.
• Country of Origin: United States

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What installation methods are available for the CB612 column base?

The CB612 can be installed using either a cast-in-place or wet-set method. In both cases, the bottom of the base plate is positioned flush with the concrete surface to ensure full post bearing.

What column size is the CB612 designed to fit?

The CB612 is specifically designed for a 6 x 12 column size, and it is compatible with lumber, glulam, and engineered wood products of that dimension.

What fasteners are required to install the CB612?

Installation of the CB612 requires two 5/8" bolts. Bolt hole locations are positioned to meet code-required spacing for optimal load capacity.

Is the CB612 suitable for use in high wind or seismic zones?

Yes. The CB612 features increased uplift resistance, making it well suited for applications where wind or seismic loading is a design consideration.

Note: Product dimensions and/or Screw or Bolt holes may differ from picture. Please see item description for specifications.