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September 08, 2026 - BY Admin

Structural Steel Connections: AISC 360 and IS 800 Moment vs Shear Joint Design

Why Structural Joint Integrity Dictates Frame Safety

When structural steel frames collapse, failure rarely begins in the middle of a heavy I-beam; it almost always originates at connection joints. Designing safe, economical connections is a vital civil engineering skill.

Shear (Simple) vs. Moment (Rigid) Connections

Engineers must match connection types to intended structural load distributions.

  • Shear Connections: Fin plates and double angle cleats transfer gravity loads while allowing minor rotational movement.
  • Moment Connections: Flange welds and extended stiffened end-plates resist dynamic rotational bending loads.
  • Prying Action Checks: Calculating tensile bolt prying forces to prevent sudden bolt head shear failure.

Learn structural steel detailing in CADDEX's Tekla Structures Training.

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