Calculate root face (land) dimension for groove welds based on plate thickness, weld process, and groove type per AWS D1.1
Input Parameters
Results
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Recommended Root Face
in
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Acceptable Range
in
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Burn-Through Risk
Note: Root face (land) provides a ledge to support the molten weld pool during the root pass. Too thin risks burn-through; too thick risks lack of penetration.
Reference
AWS D1.1 Table 3.4 Prequalified Groove Weld Root Face Dimensions:
SMAW without backing: 0 to 1/8 in root face
GMAW-S without backing: 0 to 1/8 in root face
GTAW: 0 to 1/8 in root face
With backing: 0 to 1/4 in root face typical