Tack Weld Sizing Calculator

Calculate tack weld size, length, and spacing per AWS D1.1 Structural Welding Code

Input Parameters

Results

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Min Tack Length
in
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Tack Weld Size
in
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Recommended Spacing
in
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Number of Tacks
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Quality Note
Note: Tack welds per AWS D1.1 must be made by qualified welders using qualified WPS. Defective tacks must be removed before final welding.

Reference

AWS D1.1 Clause 5.17: Tack Welds Min tack length = 4 x weld size (but >= 1" / 25mm) Spacing: 150-300mm (6-12") typical Tack welds must meet same quality as final weld