Standards › Riser
Catenary riser
Catenary riser shape, layback and top tension
This page describes catenary riser shape, layback and top tension and the associated engineering assessment topics. Project use requires qualified inputs and engineering review.
Assessment topics
- Work out the catenary shape, layback and touchdown point of a riser or line.
- Compute the top tension and the bottom tension.
- Screen how shape and top tension move with weight, depth or current.
Related standards
Catenary
Steel catenary riser (SCR)
Top tension
Layback
Touchdown
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Questions
What does a catenary calculation give me?
The static shape of a riser or line hanging as a catenary — the layback, the touchdown point, and the top and bottom tensions — for a given submerged weight and water depth.
What is it used for?
First-pass sizing of steel catenary risers and similar lines, and a sanity check before a full dynamic analysis.
Discuss a Catenary riser assessment
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