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Fillet Weld - Throat Thickness Rule

Required fillet-weld leg length for a double-continuous weld on shell/bulkhead stiffeners per IACS UR W7 / class rule factor of parent-plate thickness.

WeldingFilletScantling
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Formula, assumptions, and limits

a=ft,ta=0.707aa = f \cdot t, \quad t_a = 0.707 \cdot a
SymbolMeaningUnit
ttParent plate thicknessmm
ffWeld factor

Source: IACS UR W7 / CSR Pt2 Ch2

In short

Required fillet-weld leg length for a double-continuous weld on shell/bulkhead stiffeners per IACS UR W7 / class rule factor of parent-plate thickness.

Learn the theory Hull Strength and Longitudinal Bending