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Support CenterKnowledge Base ArticlesWeld size and length
Weld / Welds in IDEA StatiCa
Weld size and length
Autodesign of welds / weld sizing
Check of missing welds
Plate and weld clash check
Combining weld and contact operations
Welds – autodesign, input, warnings, visualization
Butt welds upgraded model
Partial Joint Penetration (PJP) groove welds
How are welds modeled in IDEA StatiCa
What is the correct length of the weld?
Connection designSteelKnowledge baseConnectionEN (Eurocode)

Weld size and length

This article is also available in
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The article discusses the definition of the size and length of a weld in IDEA StatiCa Connection and Member.

Weld size differences between EC and AISC (CISC) codes

Under EN, the weld size is defined as the parameter a, which is the weld throat thickness.

Under AISC (CISC), the weld size is defined as the parameter z, which is the weld leg size.

You can simply calculate a from z and vice versa using the Pythagorean Theorem.

Wels size

Weld size

You can input the weld size in each operation that generates welds directly in its properties. If you set the value Weld [mm/in] to 0, the program will automatically determine the size as half of the thickness of the thinnest connected plate.

You can also use the advanced Weld sizing method based on machine learning or the ductility requirements.

Weld length

If you need to know the exact length of a weld, go to the Check tab once the calculation has been performed. The length of the weld is related to the central line of the tube.

Length of the weld

You can also find all weld sizes and lengths in the Report, under the Bill of Materials (BOM).

Weld size and length

Weld is automatically set as long as the connected plate edge. You can set the weld length using the Weld operation only, and changing the property Type from Continuous to Partial (offsets from both sides) or Intermittent (offsets from both sides and gaps)

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