The Simpson 4 x 6 Column Base by Simpson is an engineered structural connector designed to anchor posts securely to concrete foundations, offering compatibility with a wide range of lumber, glulam, and engineered wood product sizes. Whether you are framing a deck, pergola, covered patio, or load-bearing structure, this column base supports both cast-in-place and wet set installation methods, with the base plate sitting flush with the concrete surface to ensure full post bearing beneath the column.

Key Features

• Broad wood product compatibility - connects posts to concrete foundations for lumber, glulam, and engineered wood product sizes, making it a versatile fit for a wide range of structural applications.
• Dual installation methods supported - cast-in-place or wet set into concrete gives contractors and builders flexibility to choose the approach that best suits the job site conditions.
• Flush base plate design - the base plate sits flush with the concrete surface to provide full post bearing, distributing load evenly and supporting long-term structural stability.
• Increased uplift resistance - engineered to address wind and seismic loading demands, making this column base well suited for structurally demanding environments and high-wind or seismic zones.
• Code-compliant bolt hole locations - bolt hole positioning meets code-required spacing for optimal load capacity, helping streamline inspection and approval on permitted projects.

Why This Product

• American-made quality from a trusted structural brand - produced in the United States by Simpson, a name widely recognized in structural connector applications, this column base is built to perform in demanding construction environments.
• Engineered for both everyday and high-load structural work - compatibility with lumber, glulam, and engineered wood products means this connector handles everything from residential deck posts to heavier commercial column applications without requiring a specialty connector.
• Designed to resist wind and seismic uplift - the increased uplift resistance built into this column base makes it a reliable choice for projects in regions where wind and seismic loading are primary structural concerns.
• Installation flexibility reduces on-site complications - support for both cast-in-place and wet set methods means this connector adapts to how the job is sequenced, reducing the need to rework concrete placement around connector selection.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: CB46W
• Nominal Column Size: 4 x 6
• Fasteners Required: Bolts - (2) 5/8" (sold separately)
• Width 1: 3-9/16 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 supported by the CB46W column base?

The CB46W is designed to be either cast-in-place or wet set into concrete. In both methods, the bottom of the base plate sits flush with the concrete surface to ensure full post bearing beneath the column.

What types of wood products are compatible with the CB46W?

This column base is designed to connect posts to concrete foundations for a wide range of lumber, glulam, and engineered wood product sizes, offering broad compatibility across common structural applications.

What fasteners are required to install the CB46W?

Installation of the CB46W requires two (2) 5/8" bolts. Bolt hole locations are positioned to meet code-required spacing for optimal load capacity.

Is the CB46W suitable for use in high-wind or seismic zones?

Yes. The CB46W features increased uplift resistance specifically designed to address the demands of wind and seismic loading conditions, making it well suited for structurally demanding environments.

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