The Simpson 4 x 6 Column Base, Hot-Dip Galvanized CB46HDG by Simpson is engineered to connect posts to concrete foundations across a wide range of lumber, glulam, and engineered wood product sizes. Cast-in-place or wet set into concrete, the base plate sits flush with the concrete surface to deliver full post bearing support where it matters most. Built from 7-gauge steel with a hot-dip galvanized finish, this column base is the go-to choice for structural columns that demand high load values and rugged, long-term performance in exterior settings and pressure-treated wood applications.

Key Features

• Increased uplift resistance for wind or seismic loading - helps keep columns anchored and code-compliant in high-stress structural environments where lateral and vertical forces are a concern.
• Bolt hole locations meet code-required spacing for optimal capacity - takes the guesswork out of fastener placement so installers achieve full rated performance without additional layout work.
• Cast-in-place or wet-set installation with a flush base plate - provides full post bearing against the concrete surface, ensuring solid, stable load transfer from post to foundation.
• 7-gauge steel construction - delivers the heavy-duty strength needed for columns carrying significant structural loads in residential and commercial applications.
• Hot-dip galvanized finish - provides extra corrosion resistance specifically suited for exterior environments and projects involving pressure-treated lumber where standard coatings may fall short.

Why This Product

• Dual installation flexibility - supports both cast-in-place and wet-set concrete methods, giving contractors and builders the freedom to match the connector to the job site conditions without sourcing a different product.
• Built for demanding exposure conditions - the hot-dip galvanized coating is not just a surface finish; it is specifically suited for exterior post bases and pressure-treated wood contact where corrosion protection directly extends the service life of the connection.
• Engineered for seismic and wind uplift demands - the CB46HDG is designed to handle the uplift forces common in wind-prone and seismic zones, making it a reliable choice when structural performance requirements are non-negotiable.
• Broad compatibility with engineered wood products - in addition to standard dimensional lumber, this column base is designed to work with glulam and engineered wood product sizes, making it a versatile anchor solution across a variety of modern framing applications.

Specifications

• Manufacturer Part Number (MPN): CB46HDG
• Brand: Simpson Strong-Tie
• Nominal Column Size: 4x6
• Width 1: 3-9/16 in.
• Width 2: 5-1/2 in.
• Gauge: 7
• Coating / Finish: Hot-Dip Galvanized
• Install With: (2) 5/8-in. diameter HDG machine bolts (sold separately)
• Country of Origin: United States

Approved Applications

• Connecting posts to concrete foundations in residential and commercial construction
• Cast-in-place concrete installations where the base plate sits flush with the concrete surface
• Wet-set concrete installations for full post bearing support
• Exterior applications and projects using pressure-treated lumber requiring enhanced corrosion resistance
• Structural columns subject to wind or seismic uplift forces

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What installation methods are compatible with the CB46HDG?

The CB46HDG 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 provide full post bearing.

What type of steel and finish does the CB46HDG use, and why does it matter?

The CB46HDG is fabricated from 7-gauge steel and features a hot-dip galvanized (HDG) finish. This coating provides extra corrosion resistance, making it well suited for exterior environments and applications involving pressure-treated wood where corrosion is a concern.

What fasteners are required to install the CB46HDG?

Installation requires (2) 5/8-in. diameter HDG machine bolts. The bolt hole locations are positioned to meet code-required spacing for optimal load capacity.

Is the CB46HDG suitable for high-load structural applications?

Yes. The CB46HDG is engineered for columns that require high structural values and rugged performance, including increased uplift resistance for wind or seismic loading, making it appropriate for demanding structural applications.

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