The Simpson Glulam Column Base 9 x 10.5 Inch is a heavy-duty structural connector from Simpson, engineered to create a secure, code-compliant connection between a glulam column and a concrete foundation. Designed specifically for a nominal glulam column measuring 9" x 10.5", this column base installs via cast-in-place or wet-set concrete methods, positioning the base plate flush with the concrete surface for full post bearing and efficient load transfer. Built to handle demanding residential, commercial, and industrial structural applications, it delivers dependable uplift resistance where performance under wind or seismic loading is critical.

Key Features

• Engineered fit for glulam columns - Sized precisely for a 9" x 10.5" glulam column, ensuring a proper, structurally sound connection without field modification.
• Flush base plate installation - Cast-in-place or wet-set into concrete so the base plate sits level with the surface, allowing full post bearing and maximum load distribution across the column footprint.
• High uplift resistance - Designed for elevated uplift demand, making it a reliable choice for structural columns in wind- or seismic-rated construction.
• Simpson gray paint finish - Factory-applied coating provides a consistent, durable surface ready for installation in demanding structural environments.
• Broad application compatibility - Approved for glulam, dimensional lumber, and engineered wood product columns in residential, commercial, and industrial framing systems.

Why This Product

• Purpose-built for glulam construction - Unlike generic post bases, this connector is engineered specifically around glulam column geometry, giving structural builders a precise, reliable fit for timber-frame and heavy-column applications.
• Versatile installation for concrete foundations - Compatibility with both cast-in-place and wet-set methods gives contractors flexibility to integrate this base into a variety of foundation workflows without additional hardware.
• Trusted brand in structural connectors - Produced by Simpson, a widely recognized name in structural connector engineering, this column base is built to the tolerances that structural and building professionals rely on.
• Domestic production - Made in the United States, supporting consistent quality standards that professionals in high-load structural framing depend on for critical connections.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB9-10.5
• Nominal Column Size: Glulam 9" x 10.5"
• Finish: Simpson Strong-Tie gray paint
• Fasteners Required: Bolts - (2) 5/8"
• Width 1: 10-1/2 in.
• Width 2: 8-3/4 in.
• Country of Origin: United States

Approved Applications

• Connecting posts to concrete foundations in structural framing systems
• Glulam, lumber, and engineered wood product column installations
• High-load columns requiring elevated uplift resistance in wind or seismic zones
• Cast-in-place or wet-set concrete foundation connections
• Residential, commercial, and industrial structural column applications

What's Included

• (1) Simpson Strong-Tie CB9-10.5 Column Base
• Note: Fasteners not included. Requires (2) 5/8" bolts (sold 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 CB9-10.5 designed to fit?

The CB9-10.5 is designed specifically for a glulam column measuring 9" x 10.5". It is not intended for standard dimensional lumber posts, as it is engineered to match the exact dimensions of a glulam column of that size.

How is the CB9-10.5 installed into concrete?

The CB9-10.5 is designed for either cast-in-place or wet-set concrete installation. In both methods, the base plate is set flush with the concrete surface, which allows for full post bearing and maximum load transfer from the column to the foundation.

What fasteners are required to install the CB9-10.5?

Installation of the CB9-10.5 requires bolts - specifically two bolts. The bolt hole locations on the base are positioned to meet code-required spacing for optimal structural capacity.

What finish does the CB9-10.5 have, and does it offer corrosion resistance?

The CB9-10.5 is coated in Simpson Strong-Tie gray paint, which provides corrosion resistance and lasting durability for long-term performance in demanding structural applications.