Table 10: Comparison of calculated results by different definitions.

Wave (m) Wind (m/s) Current (m/s) Sea level (m) Section thickness (mm) Max. DOF (m) Max. stress (Pa) Joint return period (yr) API 8.63 39.90 1.24 0 25.4 0.3088 150 GUA 8.72 45.86 1.50 3 22.9 0.3507 180 GUA and GSA 8.72 45.86 1.50 0 22.9 0.3516 185

DOF: degree of freedom, representing the displacement of structure.