Calculate backing strip/bar dimensions per AWS D1.1 for groove welds including thickness, width, and material selection
Input Parameters
Results
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Backing Thickness
in
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Backing Width
in
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Backing Length
in
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Tack Weld Spacing
in
Note: Per AWS D1.1, steel backing must be in intimate contact with both base metal members. Backing must be continuous for the full length of the weld. Remove backing if fatigue loading is a concern.
Reference
AWS D1.1 Section 5.10: Steel backing min 3/16 in thick
Width must extend at least 3/8 in beyond each edge of groove
Backing length = joint length + runoff tabs (2 in each end min)
Tack welds spaced 6-12 in apart, placed on groove side