Section modulus of a unit corrugation in a vertical corrugated cargo-hold bulkhead - the primary scantling check per CSR-BC Part 1.
Formula
$$ Z = \frac{a \cdot t_f \cdot d + \frac{t_w d^2}{3}}{1000} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $a$ | Web height | mm | bulkhead drawing |
| $c$ | Flange breadth | mm | bulkhead drawing |
| $\varphi$ | Corrugation angle | deg | CSR-BC |
| $t_f$, $t_w$ | Face / web thickness | mm | scantling schedule |
Sources
- IACS CSR-BC Part 1 Ch. 3.