Unit 1 Types of offshore structures and conceptual development (Offshore Structural systems –

10 lecture hours

• tension leg etc)- Loads on Offshore Structures
• Wind Loads
• Wave and Current Loads
• Calculation based on Maximum base Shear and Overturning Moments
• Design Wave heights and Spectral Definition
• Hydrodynamic Coefficients and Marine growth
• Fatigue Load Definition and Joint Probability distribution
• Seismic Loads

Unit 2 Concepts of Fixed Platform Jacket and Deck Jacket concepts, redundant framing

8 lecture hours

• Launch and Lift jackets
• Simple Deck configurations for Lift and float-over installations
• In-service and Pre-service Loads and analysis

Unit 3 Steel Tubular Member Design Principles of WSD and LRFD; Allowable stresses and

10 lecture hours

• Partial Safety Factors
• Tubular Members
• Slenderness effects
• Column Buckling
• Design for Hydrostatic pressure
• Design for combined axial and bending stresses (API RP2A guidelines)

Unit 4 Tubular Joint Design for Static and Cyclic Loads Simple tubular joints, design using

6 lecture hours

• allowable loads
• stress concentration factors
• S-N curves and fatigue damage calculations
• Offshore drilling Underwater welding

Unit 5 Corrosion - Corrosion mechanism - Types of corrosion - Offshore structure corrosion

• zones – Biological corrosion - Preventive measures of Corrosion - Principles of cathode protection systems - Sacrificial anode method and impressed current method – Online 8 Subject Code: 3174023 w.e.f