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A box girder is a closed section made from welded plates. Its torsional stiffness suits curved or skewed alignments, and its smooth exterior is easier to paint and keep clean.
Typical considerations
- Internal access and ventilation for inspection and coating, or a sealed-box design.
- Weld procedures and distortion control for long plate seams.
- Segment size and weight for transport and lifting.
Final member sizes, details and specifications are determined by the engineer of record for each project. This page describes general practice and does not replace project-specific engineering.
Ce contenu est une information technique générale. Il ne remplace pas une conception structurelle propre au projet, qui doit être réalisée ou approuvée par un ingénieur qualifié selon les normes applicables et les exigences de l’autorité compétente.