The Simpson Strong-Tie ECCO3 1/4 End Column Cap is engineered to deliver strong, reliable column-to-beam connections in end-of-beam applications positioned on top of steel members. Designed specifically for a 3-1/8" beam width, this column cap features a legless construction that enables field-welded attachment directly to steel columns and beams - making it a versatile, contractor-friendly solution for structural framing. The seat of the column cap extends beyond one side of the column, providing additional bearing surface area that effectively distributes load from the beam and reinforces the integrity of the connection. Fabricated from 7-gauge steel and finished with Simpson Strong-Tie Gray paint, the ECCO3 1/4 is built to perform in demanding structural environments where dependable load transfer is critical.

Key Features

• Legless design enables field-welded attachment to steel columns and beams
• Extended seat provides additional bearing surface area beyond one side of the column for improved load distribution
• Uplift loads increased for earthquake or wind loading
• Bolt spacing meets NDS code requirements to ensure optimal performance
• Diamond holes provide temporary fastening during installation
• Constructed from 7-gauge steel for heavy-duty structural performance
• Finished with Simpson Strong-Tie Gray paint for durability
• Designed for end-of-beam applications on top of steel members

Specifications

• Model Number: ECCO3 1/4
• Beam Width: 3-1/8 in.
• Dimension W1: 3-1/4 in.
• Dimension L: 7-1/2 in.
• Dimension H1: 6-1/2 in.
• Material: 7-Gauge Steel
• Finish: Simpson Strong-Tie Gray Paint
• Country of Origin: United States

Approved Applications

• End-of-beam column-to-beam connections on top of steel members
• Field-welded connections to steel columns and beams
• Structural framing applications requiring increased uplift resistance for earthquake or wind loading
• Connections requiring NDS code-compliant bolt spacing
• May be ordered for field welding to pipe or other columns (weld by designer)

Installation

• Use all specified fasteners.
• Bolt holes shall be a minimum of 1/32" to a maximum of 1/16" larger than the bolt diameter (per 2018 NDS, section 12.1.3.2); bolt holes should be drilled from one side all the way through the beam to maintain hole tolerances.
• Contact engineered wood manufacturers for connections involving engineered wood products.

Options

• Contact us for Configurable Options and Special orders
• For special, custom, or rough-cut lumber sizes, provide dimensions.
• ECCO may be ordered for field welding to pipe or other columns. Weld by designer.

Note: Product

Frequently Asked Questions

What beam width is the ECCO3 1/4 designed to accommodate?

The ECCO3 1/4 is designed specifically for a 3-1/8" beam width, with a W1 dimension of 3-1/4 in. to properly seat and support the beam.

How is the ECCO3 1/4 attached to steel columns and beams?

The ECCO3 1/4 features a legless design that enables field-welded attachment directly to steel columns and beams, making it a practical choice for contractors working on structural framing applications.

What is the purpose of the extended seat on this column cap?

The seat of the ECCO3 1/4 extends beyond one side of the column, providing additional bearing surface area that helps distribute the load from the beam and reinforces the integrity of the connection at the end-of-beam location.

What material and finish is used on the ECCO3 1/4?

The ECCO3 1/4 is constructed from 7-gauge steel for heavy-duty structural performance and is finished with Simpson Strong-Tie Gray paint for added durability in demanding structural environments.