Required Section Modulus

Minimum hull-girder section modulus from total bending moment and steel grade allowable stress.

StructuralIACS S11

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

Z_{min} = \frac{|M_{sw}| + |M_{wv}|}{\sigma_\text{perm}}

Symbol	Meaning	Unit
$$	M_{sw}	$,$
$\sigma_\text{perm}$	Allowable bending stress	N/mm²
$Z_{min}$	Minimum required section modulus	m³

Source: IACS UR S11; IACS CSR-H

Minimum hull-girder section modulus from total bending moment and steel grade allowable stress.