The Simpson CB7 1/8-6 Post Base is a heavy-duty column base engineered by Simpson to deliver a secure, load-bearing connection between PSL 7-1/8 in. x 6 in. posts and concrete foundations. Built to handle the demands of both residential and commercial structural applications, this column base supports cast-in-place and wet-set installation methods, ensuring the base plate sits flush with the concrete surface for full post bearing. Finished in Simpson gray paint for durability, this connector is a trusted solution for structural columns subject to uplift forces from wind or seismic loading.

Key Features

• Designed for PSL 7-1/8 in. x 6 in. column sizes - ensures a precise, code-compliant fit for your specific post dimensions without modification or guesswork.
• Compatible with lumber, glulam, and engineered wood products - gives builders flexibility across a wide range of structural materials on the same project.
• Supports cast-in-place and wet-set installation - accommodates different jobsite workflows so you can integrate the base into your foundation pour at the most efficient stage.
• Full post bearing at the base plate level - distributes load evenly across the connection point, helping maintain structural integrity under heavy vertical and lateral forces.
• Engineered for high uplift resistance - suitable for applications requiring reliable performance under wind and seismic loading conditions.
• Simpson gray paint finish - provides a protective coating that helps the connector hold up in demanding construction environments.
• Made in the United States - confirms domestic manufacturing quality standards without needing to reference specification tables.

Why This Product

• Purpose-built for PSL and engineered wood columns - rather than relying on a generic post base, buyers get a connector sized and rated specifically for PSL 7-1/8 in. x 6 in. posts, reducing fitment issues and supporting code compliance from the start.
• Handles wind and seismic uplift demands - the CB7 1/8-6 is approved for applications requiring high uplift resistance, making it a practical choice for projects in regions with strict structural load requirements.
• Two installation methods in one product - support for both cast-in-place and wet-set concrete placement means contractors are not locked into a single sequence, helping keep complex pours on schedule.
• From a recognized structural connector brand - Simpson has a long-standing presence in engineered structural hardware, so specifying this column base aligns with what engineers, inspectors, and building departments commonly recognize and accept.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB7 1/8-6
• Nominal Column Size: PSL 7-1/8" x 6"
• Fasteners Required: Bolts - (2) 5/8" (sold separately)
• Finish: Simpson Strong-Tie Gray Paint
• Width 1: 7-1/4 in.
• Width 2: 5-1/2 in.
• Country of Origin: United States

Approved Applications

• Connecting PSL, glulam, and engineered wood posts to concrete foundations
• Structural column bases in residential and commercial construction
• Applications requiring high uplift resistance due to wind or seismic loading
• Cast-in-place or wet-set concrete foundation installations
• Columns requiring full post bearing at the base plate level

What's Included

• 1x Simpson Strong-Tie CB7 1/8-6 Column Base
• Note: (2) 5/8" bolts required - not included

• 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 post size is the CB7 1/8-6 column base compatible with?

The CB7 1/8-6 is designed specifically for PSL 7-1/8" x 6" column sizes, and is also compatible with lumber, glulam, and other engineered wood products of equivalent dimensions.

What fasteners are required to install this column base?

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

What installation methods are supported by this column base?

The CB7 1/8-6 supports both cast-in-place and wet-set installation methods. In either case, the base plate sits flush with the concrete surface to ensure full post bearing.

Is this column base suitable for high wind or seismic loading conditions?

Yes. The CB7 1/8-6 features increased uplift resistance, making it well suited for applications subject to wind or seismic loading. It is engineered for columns requiring high structural values and rugged, long-term performance under demanding load conditions.