EN 13001 Weld Strength (2018)

EN 13001 Weld Strength (2018) is based on the European crane safety design standard EN 13001-3-1+A2 and focuses on verifying the strength of welded joints in steel structures under limit state conditions.

The implementation in SDC Verifier allows engineers to evaluate welded connections using two approaches depending on weld matching:

• Equation 21 (based on the yield strength of connected members)
• Equation 22 (used when weld material under-matching is enabled; based on the ultimate tensile strength of the weld metal)

Key parameters used in calculations include:

• α_w — weld-type dependent factor (from Table 8 of EN 13001)
• f_y — yield strength of base metal
• f_uw — ultimate tensile strength of the weld metal

Engineers can also enable Effective Weld Length, which subtracts twice the weld thickness from the full weld length, aligning with the standard’s practical application guidance.

Key features in SDC Verifier:

• Toggle under-matching weld settings for code-relevant formulas
• Automatically extract required material strengths
• Choose between full or effective weld length
• Alpha_w factor and weld type handled via UI
• Full result traceability for design verification documentation

This standard complements EN 13001’s fatigue and static strength checks by enabling precise code-based validation of welded connections in crane design.