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Fillet Weld Size

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Calculate the minimum fillet weld leg size to carry a shear or tensile load per AS/NZS 1554 or AWS D1.1.

Updated Apr 2025
Dan RileyVerified

BEng Mechanical Engineering (Hons), CMIOSH, LEEA Member

Mechanical engineer and certified lifting equipment examiner with 18 years in heavy industry, structural steelwork, and crane operations across construction and resources sectors.

Updated
1 April 2025

Professional verification required

These calculations are provided for estimation and educational purposes only. Results must be verified by a suitably qualified and licensed engineer before use in any design, specification, or construction context. Numly accepts no liability for decisions made on the basis of these results.

AS/NZS 1554.1Structural steel welding โ€” welding of steel structures

Fillet weld design capacity: ฯ†Vw = 0.6 ร— ฯ† ร— fu ร— tt ร— Lw. SP category ฯ† = 0.8, GP ฯ† = 0.7.

Standards New Zealand / HERA

kN
mm
MPa
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