The Simpson 6 x 8 Column Base CB86 from Simpson is a structural connector engineered to anchor posts securely to concrete foundations, supporting standard dimensional lumber, glulam beams, and engineered wood products sized for 6 x 8 column applications. Whether cast-in-place or wet set into concrete, this column base delivers full post bearing and dependable structural performance for residential and commercial construction projects where connection integrity matters most.

Key Features

• Cast-in-place or wet set installation - both methods seat the base plate bottom flush with the concrete surface, ensuring full post bearing and a clean, code-friendly installation with no guesswork.
• Compatible with lumber, glulam, and engineered wood products - gives builders flexibility to use the connector across a variety of post materials without needing a different product for each application.
• Increased uplift resistance - helps the connection hold firm under wind and seismic loading, making this column base a practical choice for high-demand structural environments.
• Simpson Strong-Tie gray paint finish - provides a consistent, corrosion-resistant coating suited to the demands of exposed concrete and foundation-level installations.
• Requires two 5/8 in. bolts for fastening - bolt hole placement is designed to meet code-required spacing, helping contractors achieve optimal load capacity without additional modification.

Why This Product

• Trusted American-made construction - the CB86 is a product of the United States, reflecting quality standards that builders and inspectors recognize on residential and commercial job sites alike.
• Installation flexibility built in - support for both cast-in-place and wet set methods means this post base fits naturally into a wide range of concrete foundation workflows, reducing the need for on-site workarounds.
• Engineered for demanding load conditions - with built-in uplift resistance, this column base is well suited for structures in wind-prone or seismically active regions where connection performance is non-negotiable.
• Broad material compatibility in a single connector - by accommodating dimensional lumber, glulam, and engineered wood products in a 6 x 8 column size, the CB86 reduces the number of SKUs a contractor needs to carry for column-to-foundation connections.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB86
• Nominal Column Size: 6 x 8
• Finish: Simpson Strong-Tie gray paint
• Fasteners Required: Bolts - (2) 5/8" (sold separately)
• Width 1: 7-1/2 in.
• Width 2: 5-1/2 in.
• Country of Origin: United States

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What installation methods are available for the CB86 column base?

The CB86 can be either cast-in-place or wet set into concrete. Both methods result in the bottom of the base plate sitting flush with the concrete surface, ensuring full post bearing for optimal structural performance.

What types of wood products are compatible with the CB86?

The CB86 is designed to connect a wide range of posts to concrete foundations, including standard dimensional lumber, glulam beams, and engineered wood products sized for a 6 x 8 column application.

What fasteners are required to install the CB86?

Installation of the CB86 requires two 5/8" bolts. The bolt hole locations are positioned to meet code-required spacing, helping achieve optimal load capacity.

Is the CB86 suitable for high-wind or seismic environments?

Yes. The CB86 features increased uplift resistance, making it well suited for applications subject to wind or seismic loading where enhanced structural performance is critical.

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