UFC 4-159-03
3 October 2005
Table 3-9. Quasi-Static Design Notes
CRITERIA
NOTES
Wind speed
Determine for the selected return interval, R. For
typical ships use the wind that has a duration of
30 seconds at an elevation of 10 m.
Wind direction
Assume the wind can come from any direction
except in cases where wind data show extreme
winds occur in a window of directions.
Current speed
Use conditions for the site (speed and direction).
Water levels
Use the range for the site.
Waves
Neglected. If waves are believed to be
important, then dynamic analyses are
recommended.
Factors of safety
Perform the design using quasi-static forces and
moments (see Chapter 4), minimum factors of
safety in Table 3-7, and design to assure that all
criteria are met.
31
Previous Page
