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ECC End Column Cap

The ECC is designed to provide strong column-beam connections in end-of-beam applications in wood construction. The seat of the column cap provides an additional surface area of bearing that extends beyond the one side of the column. The ECC helps to distribute the load from the beam and provide support for the connection.

Key Features

  • Certified welds for confidence in strength and loading
  • Uplift loads increased for earthquake or wind loading
  • Bolt spacing that meets NDS code requirements to ensure optimal performance
  • Diamond holes to provide temporary fastening

Material

  • ECC3 1/4, ECC44, ECC46, ECC48, ECC4.62, ECC64, ECC66, ECC68, ECC6-7 1/8 — 7 gauge; all others — 3 gauge

Finish

  • Simpson Strong-Tie gray paint. Some products available in HDG, stainless steel or black powder coat.

Installation

  • Use all specified fasteners; see General Notes
  • Bolt holes shall be a minimum of 1/32" to a maximum of 1/16" larger than the bolt diameter (per 2015 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 that are not through the wide face

Options

  • Straps may be rotated 90° where W1 ≥ W2 (see illustration) and for CC5 1/4-6.
  • For special, custom or rough-cut lumber sizes, provide dimensions. An optional W2 dimension may be specified. (The W2 dimension on straps rotated 90° is limited by the W1 dimension.)

Ordering Information

Related Literature

Wood Construction Connectors 2024-2025
C-C-2024
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
Catalog
Conectores para la construcción con madera 2024–2025
C-C-2024SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog
Wood Construction Connectors – Canadian Limit States Design
C-C-CAN2025
A complete product and application catalogue including load tables and installation information for wood-to-wood, wood-to-concrete and wood-to-masonry connectors.
Catalog
Connecteurs pour constructions en bois — Conception aux états limites canadiens
C-C-CAN2022CF
Un catalogue complet sur les produits et les applications, y compris de l’information sur l’installation et les tableaux de charge pour les connecteurs bois-à-bois, bois-à-béton et bois-à-maçonnerie.
Catalog
Connectors Installed on SCL Columns
T-C-SCLCLM23
A technical bulletin discussing the structural properties of the two different surface sides of SCL columns, with connector solutions (PCZ and EPC) added to the column bases and caps section.
Technical Bulletin
Connectors Installed on SCL Columns
T-C-SCLCLMCAN23
A Canadian Limit States technical bulletin addressing typical installations of Simpson Strong-Tie® connectors on SCL columns as well as reduction factors for narrow-face SCL installations.
Technical Bulletin

Load Tables

  These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

  For stainless-steel fasteners, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.

Model No. Beam Width (in.) Dimensions (in.) Bolts Allowable Loads (DF/SP)
W1 W2 L H1 Size Beam Post Down
(100)
  ECC3 1/4-4 3 1/8 3 1/4 3 5/8 7 1/2 6 1/2 5/8 2 2 6,835
  ECC3 1/4-6 3 1/8 3 1/4 5 1/2 7 1/2 6 1/2 5/8 2 2 10,740
  ECC44 3 1/2 3 5/8 3 5/8 5 1/2 4 5/8 1 2 7,655
  ECC46 3 1/2 3 5/8 5 1/2 8 1/2 6 1/2 5/8 2 2 12,030
ECC48 3 1/2 3 5/8 7 1/2 8 1/2 6 1/2 5/8 2 2 16,405
  ECC4.62-3.62 4 1/2 4 5/8 3 5/8 8 1/2 6 1/2 5/8 2 2 9,845
  ECC4.62-4.62 4 1/2 4 5/8 4 5/8 8 1/2 6 1/2 5/8 2 2 12,655
  ECC4.62-5.50 4 1/2 4 5/8 5 1/2 8 1/2 6 1/2 5/8 2 2 15,470
  ECC5 1/4-4 5 1/8 5 1/4 3 5/8 10 1/2 8 1/8 3/4 2 2 11,210
  ECC5 1/4-6 5 1/8 5 1/4 5 1/2 10 1/2 8 1/8 3/4 2 2 17,615
ECC5 1/4-8 5 1/8 5 1/4 7 1/2 10 1/2 8 1/8 3/4 2 2 24,025
  ECC64 5 1/4, 5 1/2 5 1/2 3 5/8 7 1/2 6 1/2 5/8 2 2 12,030
  ECC66 5 1/4, 5 1/2 5 1/2 5 1/2 7 1/2 6 1/2 5/8 2 2 18,905
ECC68 5 1/4, 5 1/2 5 1/2 7 1/2 9 1/2 6 1/2 5/8 2 2 25,780
ECC6-7 1/8 5 1/4, 5 1/2 5 1/2 7 1/8 9 1/2 6 1/2 5/8 2 2 24,490
ECC74 6 3/4 6 7/8 3 5/8 10 1/2 8 3/4 2 2 15,355
ECC76 6 3/4 6 7/8 5 1/2 10 1/2 8 3/4 2 2 24,130
ECC77 6 3/4 6 7/8 6 7/8 10 1/2 8 3/4 2 2 29,615
ECC78 6 3/4 6 7/8 7 1/2 10 1/2 8 3/4 2 2 32,090
ECC7 1/8-4 7 7 1/8 3 5/8 10 1/2 8 3/4 2 2 18,375
ECC7 1/8-6 7 7 1/8 5 1/2 10 1/2 8 3/4 2 2 28,875
ECC7 1/8-7 1/8 7 7 1/8 7 1/8 10 1/2 8 3/4 2 2 36,750
ECC7 1/8-8 7 7 1/8 7 1/2 10 1/2 8 3/4 2 2 39,375
ECC84 7 1/2 7 1/2 3 5/8 10 1/2 8 3/4 2 2 16,405
ECC86 7 1/2 7 1/2 5 1/2 10 1/2 8 3/4 2 2 25,780
ECC88 7 1/2 7 1/2 7 1/2 10 1/2 8 3/4 2 2 35,155
ECC94 8 3/4 8 7/8 3 5/8 10 1/2 8 3/4 4 2 19,905
ECC96 8 3/4 8 7/8 5 1/2 10 1/2 8 3/4 4 2 31,280
ECC98 8 3/4 8 7/8 7 1/2 10 1/2 8 3/4 4 2 42,655
ECC106 9 1/4 9 1/2 5 1/2 10 1/2 8 3/4 4 2 32,655
ECC126 11 1/2 11 5/8 5 5/8 10 1/2 8 3/4 4 2 39,530
ECC128 11 1/2 11 5/8 7 5/8 10 1/2 8 3/4 4 2 53,905
ECC1210 11 1/2 11 5/8 9 5/8 10 1/2 8 3/4 4 2 68,280
  1. Downloads shall be reduced where limited by allowable loads of the post.
  2. Column sides are assumed to be aligned in the same vertical plane as the beam sides. ECC4.62 models assume a minimum 3 1/2"-wide post.
  3. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers known as the narrow face. Values in the tables reflect installation into the wide face. See technical bulletin T-C-SCLCLM for load reductions resulting from narrow-face installations.
  4. Beam depth must be at least as tall as H1.
  5. All references to bolts are for structural quality through bolts (not lag screws or carriage bolts) equal to or better than ASTM A307, Grade A.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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ECCO
End Column Cap Legs Omitted
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