The Simpson EPB46 Elevated Post Base for 4x6 is a cast-in-place post base from Simpson engineered to create a secure, lasting connection between 4x6 posts or columns and concrete foundations. Designed specifically for top-supported structures such as decks and patio covers, this elevated post base sets directly into wet concrete and delivers the code-required 1 in. standoff above the surface - helping protect the post end from moisture contact and rot. Its adjustable standoff height, heavy-gauge construction, and gray paint finish make it a dependable choice for contractors and builders who need a code-compliant column base without sacrificing installation flexibility.

Key Features

• Adjustable standoff height from 1 in. to 2-1/2 in. above concrete - meets the code-required minimum while giving installers flexibility to suit a wider range of project conditions and drainage requirements
• Cast-in-place installation directly into wet concrete - allows the base to be embedded before the concrete hardens, resulting in a strong, integral connection that does not rely on post-cure anchoring
• Code-required 1 in. standoff when properly installed - keeps post ends elevated off the concrete surface, reducing moisture exposure and the risk of rot over the life of the structure
• 12-gauge base plate paired with a 1-1/16 in. OD x 8 in. pipe - heavy-gauge steel construction provides the structural integrity needed for load-bearing deck posts and column bases
• Simpson Strong-Tie gray paint finish - provides a corrosion-resistant coating suited for outdoor post base applications in typical above-grade environments
• Not recommended for non top-supported installations such as fences or unbraced carports - knowing the intended use case upfront helps buyers select the right connector for their specific structural application and avoid misapplication

Why This Product

• Built-in moisture protection by design - the elevated standoff keeps post ends clear of standing water and concrete moisture, directly addressing one of the most common causes of long-term post deterioration in deck and patio cover construction
• Installation flexibility without sacrificing compliance - the ability to dial in standoff height anywhere from the code-required 1 in. up to 2-1/2 in. means this post base adapts to varied site conditions while still meeting structural code requirements
• Simplified wet-concrete installation - setting the base in place before the concrete cures eliminates the need for drilling, sleeve anchors, or post-cure hardware, reducing labor steps and the potential for anchor misalignment
• Trusted Simpson construction and finish - the 12-gauge steel base plate, purpose-matched pipe dimensions, and gray paint finish reflect the material standards builders rely on for structural connectors in demanding outdoor environments

Specifications

• MPN: EPB46
• Nominal Post Size: 4x6
• Base Plate Gauge: 12
• Pipe: 1-1/16 in. OD x 8 in.
• Width (W): 5-1/2 in.
• Height (H): 3 in.
• Length (L): 3-5/16 in.
• Coating/Finish: Simpson Strong-Tie Gray Paint
• Install With: 0.162 in. x 3-1/2 in. nails
• Fasteners Required: (12) 0.162 in. x 3-1/2 in. nails
• Country of Origin: United States

Approved Applications

• Deck post bases and column bases requiring cast-in-place concrete installation
• Patio covers and overhead structures with top-supported posts
• Any application requiring the code-mandated 1 in. standoff to protect post ends from moisture and rot
• Installations requiring up to 2-1/2 in. of adjustable standoff clearance above concrete

Downloads and Resources

• View Specifications

Frequently Asked Questions

What is the standoff range provided by the EPB46?

When properly installed, the EPB46 provides the code-required 1 in. standoff above concrete. It also allows up to 2-1/2 in. of standoff above concrete if a greater clearance is desired for the application.

Is the EPB46 suitable for fences or unbraced carports?

No. The EPB46 is not recommended for non top-supported installations, such as fences or unbraced carports. It is designed for top-supported structures such as decks and patio covers.

How is the EPB46 installed?

The EPB46 is a cast-in-place post base, meaning it is set directly into wet concrete before it hardens. It is installed using 0.162 in. x 3-1/2 in. nails - twelve fasteners are required for a complete installation.

What post size is the EPB46 designed for?

The EPB46 is designed for a nominal 4x6 post size. It features a 12-gauge base plate and a 1-1/16 in. OD x 8 in. pipe to accommodate that member size securely.

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