ShipCalculators.com

Stiffener Section Modulus - Rule Check

Required section modulus of a longitudinal stiffener under lateral pressure - Z = c·s·l²·p/σ.

StiffenerSection modulusScantling
Loading calculator…

Formula, assumptions, and limits

Zreq=csl2pσZ_{req} = \frac{c \cdot s \cdot l^2 \cdot p}{\sigma}
SymbolMeaningUnit
ssStiffener spacingm
llEffective spanm
ppDesign pressurekN/m²
ccEnd-fixity factor

Source: IACS CSR-BC/OT

In short

Required section modulus of a longitudinal stiffener under lateral pressure - Z = c\u00b7s\u00b7l\u00b2\u00b7p/\u03c3.

Learn the theory Hull Strength and Longitudinal Bending