The Simpson Strong-Tie CB7-9 is a heavy-duty column base engineered to securely connect posts to concrete foundations across a wide range of lumber, glulam, and engineered wood product applications. Designed specifically for a Glulam 6.75" x 9" column size, this cast-in-place or wet-set base plate sits flush with the concrete surface, enabling full post bearing for maximum load transfer and structural integrity. Built to deliver high structural values and rugged, long-term performance, the CB7-9 is the dependable choice for columns subjected to demanding wind or seismic loading conditions. Finished in Simpson Strong-Tie gray paint, this column base combines corrosion resistance with the durability required for structural applications.

Key Features

• Designed to connect posts to concrete foundations for a wide range of lumber, glulam, and engineered wood product sizes
• Cast-in-place or wet-set installation positions the base plate flush with the concrete surface for full post bearing
• Increased uplift resistance for wind or seismic loading
• Bolt hole locations meet code-required spacing for optimal capacity
• Ideal for columns requiring high structural values and rugged performance
• Finished in Simpson Strong-Tie gray paint for durability and corrosion resistance
• Manufactured in the United States

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB7-9
• Nominal Column Size: Glulam 6.75" x 9"
• Finish: Simpson Strong-Tie gray paint
• Fasteners Required: Bolts - (2) 5/8" (sold separately)
• Width 1: 9 in.
• Width 2: 6-3/4 in.
• Country of Origin: United States

Approved Applications

• Connecting glulam, lumber, and engineered wood product columns to concrete foundations
• Cast-in-place or wet-set concrete installations requiring flush base plate positioning
• Structural columns in high-wind and seismic load environments
• Applications demanding high structural uplift resistance and load-bearing capacity

What's Included

• 1x Simpson Strong-Tie CB7-9 Column Base
• Note: Fasteners (2 x 5/8" bolts) are required but not included - must be sourced separately.

Options

• Contact us for Configurable Options and Special orders

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

Frequently Asked Questions

What column size is the CB7-9 designed to fit?

The CB7-9 is designed specifically for a Glulam 6.75" x 9" column size, making it suitable for glulam beams as well as a wide range of lumber and engineered wood products of that dimension.

How is the CB7-9 installed?

The CB7-9 is installed as a cast-in-place or wet-set base plate, meaning it is set into the concrete while it is still wet. This positions the base plate flush with the concrete surface, allowing for full post bearing and maximum load transfer.

What fasteners are required to use the CB7-9?

The CB7-9 requires bolts for installation - specifically two 5/8" bolts. The bolt hole locations are designed to meet code-required spacing for optimal load capacity.

Is the CB7-9 suitable for high-wind or seismic applications?

Yes, the CB7-9 is engineered with increased uplift resistance, making it well suited for columns subjected to demanding wind or seismic loading conditions. It is built to deliver high structural values and rugged, long-term performance in these environments.