This technical note provides a complete and practical introduction to the behaviour and analysis of Vierendeel girders, combining conceptual explanation, structural mechanics, and worked numerical examples. It explains how vertical loads are transferred through shear in the chords, how bending develops in every member, and why rigid joints are essential for maintaining panel geometry.

Alongside the theoretical discussion, the note includes a sample calculation for a typical Vierendeel panel, demonstrating:

• how shear is distributed across the chords,

• how bending moments form in the verticals and horizontals,

• how axial forces contribute to the overall moment,

• how contraflexure points can be assumed for simplified preliminary analysis.

Designed for engineers and students.