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Corrugated Bulkhead - Section Modulus

Section modulus of a unit corrugation in a vertical corrugated cargo-hold bulkhead - the primary scantling check per CSR-BC Part 1.

BulkheadCorrugatedScantling
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Formula, assumptions, and limits

Z=atfd+twd231000Z = \frac{a \cdot t_f \cdot d + \frac{t_w d^2}{3}}{1000}
SymbolMeaningUnit
aaWeb heightmm
ccFlange breadthmm
φ\varphiCorrugation angledeg
tft_f, twt_wFace / web thicknessmm

Source: IACS CSR-BC Part 1 Ch. 3

In short

Section modulus of a unit corrugation in a vertical corrugated cargo-hold bulkhead - the primary scantling check per CSR-BC Part 1.

Learn the theory Hull Strength and Longitudinal Bending