vamseeachanta What to Document
What to Document
"Other structures" are components that interact with the primary structure but are not the primary line:
Other Structures:
├── Attached Buoyancy / Arch Buoys
│ ├── Object name, position (KP or z-coordinate)
│ ├── Mass [Te], displaced volume [m³], net buoyancy [kN]
│ └── Hydrodynamic coefficients (Cd, Ca)
│
├── Bend Stiffeners / Bell Mouths
│ ├── Location (top of riser, PLEM connection)
│ ├── Length, OD, stiffness curve (M-κ relationship)
│ └── Tip constraint (fixed/pinned)
│
├── I-Tubes / J-Tubes (pull-in)
│ ├── Geometry (curved section, exit angle)
│ ├── Friction coefficient
│ └── Guide centraliser positions
│
├── Clamps and Supports
│ ├── Position (KP or global z)
│ ├── Clamp mass, gap, friction coefficient
│ └── Stiffness (restrained DOFs)
│
├── Adjacent Structures (passing ship, jacket, platform)
│ ├── Proximity distance [m]
│ ├── Clearance envelope (min approach)
│ └── Interaction modelling (constraint or hydrodynamic)
│
└── Vessel (FPSO, semi, ship)
├── Vessel type, draught, displacement
├── RAO origin, heading convention
└── Relevant motions for analysis (heave, surge, pitch for risers)