Eurocode3 Connections (EN 1993-1-8, 2005)

Eurocode3 Connections (EN 1993-1-8, 2005) provides calculation methods for steel joints composed of hollow or open sections subjected to static loads. SDC Verifier implements Chapter 7 to automatically detect and verify joint configurations in lattice structures.

Supported connection types:

• CHS chord + CHS, RHS, or I-beam braces
• RHS chord + CHS or RHS braces
• I-beam chord + CHS or RHS braces

Key features of the implementation:

• Automatic recognition of chords and braces using the Connection Finder tool
• Joint stress assessment based on in-plane and out-of-plane brace loading via the Brace Stress Tool
• Brace classification logic integrated into the calculation workflow
• Cold formed / hot finished material handling, with buckling curve selection per EN 1993-1-1 Table 6.2
• Support for overlap conditions (e.g., weld-seam limitations, overlap ratios)

Safety factors and configurable parameters:

• γ_M0, γ_M5 for joint strength and ultimate limit state
• Overlap limits (60% or 80%) per weld condition
• I-beam root radius and chord/bracing dimensions automatically considered in resistance formulas

This implementation is especially useful for offshore jacket structures, onshore towers, and industrial space frames composed of hollow or mixed-section members.