The Simpson CB88 Column Base for 8x8 by Simpson Strong-Tie is engineered to connect posts to concrete foundations across a wide range of lumber, glulam, and engineered wood product applications. Designed to be either cast-in-place or wet set into concrete, the base plate sits flush with the concrete surface to provide full post bearing once cured. Built to heavy-duty steel tolerances with a strap at 3-gauge and a base plate at 7-gauge, this column base delivers the high structural values and rugged performance that demanding load conditions require.

Key Features

• Increased uplift resistance for wind or seismic loading - engineered to handle lateral and uplift forces, making it a reliable choice for columns in high-wind or seismic zones
• Bolt hole locations meet code-required spacing for optimal capacity - fastener placement is pre-engineered to maximize load capacity while satisfying code requirements, reducing design guesswork on the job site
• Nominal column size: 8x8 - sized specifically to accept standard 8x8 lumber posts as well as glulam and engineered wood products of equivalent dimension, ensuring a secure, properly fitted connection
• Heavy-duty two-part steel construction: strap 3 ga., base 7 ga. - thicker-gauge steel where it matters most means the connector can handle the high loads typical of structural column applications without compromise
• Simpson Strong-Tie gray paint finish - factory-applied coating provides a consistent, durable surface that resists corrosion in typical above-grade installation environments

Why This Product

• Cast-in-place or wet-set flexibility - two proven installation methods let contractors choose the approach that best fits their project schedule and site conditions, with the base plate sitting flush with concrete in either case for full post bearing
• Built for high structural demand - the combination of 3-gauge straps and a 7-gauge base plate provides the heavy-duty strength needed for columns carrying significant loads, making this an appropriate choice where engineered performance is required
• Code-compatible fastener layout - bolt hole spacing is designed to meet code-required minimums for optimal capacity, helping ensure the connection performs as rated and simplifies the inspection process
• Broad material compatibility - accepts standard dimensional lumber, glulam, and engineered wood products in the 8x8 nominal size, giving designers and builders the freedom to use the post material that best suits their structural and budget requirements

Specifications

• MPN: CB88
• Brand: Simpson Strong-Tie
• Nominal Column Size: 8x8
• Width 1: 7-1/2 in.
• Width 2: 7-1/2 in.
• Steel Gauge: Strap 3 ga.; Base 7 ga.
• Coating / Finish: Simpson Strong-Tie Gray Paint
• Install With: (2) 3/4-in. diameter machine bolts (sold separately)
• Country of Origin: United States

Approved Applications

• Connecting 8x8 nominal lumber posts to concrete foundations
• Cast-in-place concrete column base installations
• Wet-set concrete column base installations
• Glulam and engineered wood product column connections
• Structural columns requiring high uplift resistance under wind or seismic loading

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.