The Simpson Strong-Tie CB9-7.5 is a heavy-duty column base engineered to provide a reliable, high-strength connection between posts and concrete foundations. Designed specifically for a Glulam 9" x 7.5" column size, this cast-in-place or wet-set base plate installs flush with the concrete surface to deliver full post bearing - making it an ideal solution for structural columns that demand exceptional load capacity and long-term durability. Finished in Simpson Strong-Tie gray paint and fastened with (2) 5/8" bolts, the CB9-7.5 is built to accommodate a wide range of lumber, glulam, and engineered wood product applications where rugged performance and code-compliant structural values are required.

Key Features

• Full Post Bearing: The base plate sits flush with the concrete surface, providing complete support beneath the post for maximum load transfer.
• Cast-in-Place or Wet-Set Installation: Versatile installation options allow the base to be set during concrete pours for a clean, integrated finish.
• Increased Uplift Resistance: Engineered to resist uplift forces associated with wind and seismic loading for enhanced structural security.
• Code-Required Bolt Hole Spacing: Bolt hole locations are positioned to meet code-required spacing, optimizing connection capacity.
• Simpson Strong-Tie Gray Paint Finish: Factory-applied gray paint provides a durable, consistent finish suited for structural applications.
• High Structural Values: Designed for columns requiring demanding load performance in both residential and commercial construction.
• Made in the United States: Manufactured domestically for consistent quality and reliability.

Specifications

• Specification: Detail
• Manufacturer: Simpson Strong-Tie
• MPN: CB9-7.5
• Nominal Column Size: Glulam 9" x 7.5"
• Fasteners Required: (2) 5/8" Bolts (sold separately)
• Finish: Simpson Strong-Tie Gray Paint
• Width 1: 7-1/2 in.
• Width 2: 8-3/4 in.
• Country of Origin: United States

Approved Applications

• Connecting glulam, lumber, and engineered wood product posts to concrete foundations
• Structural columns in residential, commercial, and industrial construction
• Applications requiring high uplift resistance in wind-prone or seismic regions
• Cast-in-place or wet-set concrete foundation installations
• Columns demanding high structural load values and rugged long-term performance

What's Included

• (1) Simpson Strong-Tie CB9-7.5 Column Base
• Note: (2) 5/8" bolts are required for installation and are not included unless otherwise stated.

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What column size is the CB9-7.5 designed to fit?

The CB9-7.5 is designed specifically for a Glulam 9" x 7.5" column size, making it suitable for large structural columns using lumber, glulam, or engineered wood products.

How is the CB9-7.5 installed?

The CB9-7.5 supports both cast-in-place and wet-set installation methods, meaning it can be set directly into concrete during the pour. The base plate sits flush with the concrete surface to provide full post bearing beneath the column.

What hardware is used to fasten the CB9-7.5?

The CB9-7.5 is fastened using (2) 5/8" bolts. The bolt hole locations are positioned to meet code-required spacing, which helps optimize the connection capacity of the installation.

Is the CB9-7.5 suitable for applications with wind or seismic loading?

Yes. The CB9-7.5 is engineered with increased uplift resistance to help counter forces associated with wind and seismic loading, making it appropriate for structural applications where enhanced security against uplift is required.