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DNV-OS-C103 Structural Design of Column Stabilised Units (LRFD method)
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Sec.6
F. Heeled Condition
Sec.6
F 100 General
Sec.6 F
101 Heeling of the unit after damage flooding, as described in
DNV-OS-C301 shall be accounted for in the assessment of structural
strength. Maximum static allowable heel after accidental flooding
is 17º including wind. Structures that are wet when the
static equilibrium angle is achieved, shall be checked for external
water pressure. Guidance note:
The heeled condition corresponding to accidental flooding
in transit conditions will normally not be governing for the design. ---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Sec.6 F
102 The unit shall be designed for environmental condition corresponding
to 1 year return period after damage, see DNV-OS-C101.Guidance note:
The environmental loads may be disregarded if the material
factor is taken as gM = 1.33.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Sec.6 F
103 Local exceedance of the structural resistance is acceptable
provided redistribution of forces due to yielding, buckling and
fracture is accounted for.
Sec.6 F
104 Wave pressure, slamming forces and green sea shall be accounted
for in all relevant areas. Local damage may be accepted provided
progressive structural collapse and damage of vital equipment is
avoided.
Sec.6 F
105 Position of air-intakes and openings to areas with vital equipment
which need to be available during an emergency situation, e.g. emergency
generators, shall be considered taking into account the wave elevation
in a 1 year storm.
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