Special strength

Special strength requirements for fore deck fittings
D.2.2.1 General
The following strength requirements are to be observed to resist green sea forces acting on ventilator
pipes and their closing devices located within the forward quarter length.
D.2.2.2 Application
These Rules apply to all ship types of seagoing service of length 80 m or more, where the height of the
exposed deck, within the forward 0.25 L, in way of the item is less than 0.1 L or 22 m above the summer
load waterline, whichever is the lesser.Rules I Ship Technology
Part 1 Seagoing Ships
Chapter 21 Ventilation
Section 1 Ventilation
Edition 2014 Germanischer Lloyd Page 1–7
D.2.2.3 Applied loading for ventilator pipes and their closing devices
D.2.2.3.1 The pressures p [kN/m2] acting on ventilator pipes and their closing devices may be calculated
from: