DNV OS-C101-LRFD Weld Strength (2011)

DNV OS-C101-LRFD Weld Strength (2011) defines verification criteria for weld connections in offshore steel structures. Based on Section 9 of the April 2011 edition, this implementation supports the assessment of weld geometry, throat stress, and utilization using LRFD principles.

SDC Verifier applies checks to all welds automatically and separates them into:

• Geometry checks: cross-section properties of welds
• Stress checks: throat stress at start and end points
• Utilization checks: comparison of total and base material stress limits

Key configurable parameters include:

• Beta_w: correlation factor based on material (Table C4)
• Gamma_Mw: partial safety factor for welds (Table C1)
• Eccentricity inclusion: additional bending moment for single fillet welds
• Material yield/tensile strength: used in all weld strength checks

The weld stress is calculated using Von Mises theory, based on the actual weld throat size and orientation. The check assumes 0° weld angle for strength comparison, aligning with DNV’s simplification.