The Simpson Glulam Column Base CB7-9 is a heavy-duty base connector engineered by Simpson to securely anchor glulam, lumber, and engineered wood product columns to concrete foundations. Designed specifically for a 6.75 in. x 9 in. 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 in demanding applications including high-wind and seismic load environments.

Key Features

• Designed for 6.75 in. x 9 in. glulam columns - provides a precise, engineered fit for glulam as well as compatible lumber and engineered wood products, eliminating guesswork during installation and ensuring reliable structural performance.
• Cast-in-place or wet-set installation method - the base plate is set into concrete while still wet, positioning it flush with the surface so the column bears fully on the base for optimal load distribution and connection strength.
• Engineered for high-wind and seismic environments - delivers high structural uplift resistance and load-bearing capacity, making it a dependable choice for columns subjected to the most demanding lateral and vertical loading conditions.
• Simpson Strong-Tie gray paint finish - provides corrosion resistance suited to structural applications, contributing to long-term durability in the environments where column bases are typically installed.
• Connects glulam, lumber, and engineered wood products to concrete - broad material compatibility means this single connector works across a variety of column types and foundation connection scenarios, reducing the need for alternative hardware.

Why This Product

• Purpose-built fit for glulam construction - engineered specifically around the 6.75 in. x 9 in. glulam column size, this base delivers a structurally optimized connection that generic hardware cannot replicate, supporting confidence in the overall assembly.
• Trusted Simpson engineering for critical structural connections - manufactured by Simpson, a brand widely recognized for structural connector hardware, this column base is built to perform where post-to-foundation connections are load-critical.
• Flush concrete installation protects the structural connection - the wet-set design positions the base plate level with the concrete surface, allowing full post bearing contact and maximizing the transfer of loads from column to foundation.
• Suited to the most demanding load conditions - rated for high structural uplift resistance and approved for seismic and high-wind applications, this column base is a practical choice for projects where code compliance and connection reliability are non-negotiable.

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.