Answer:
Deep water pipelines, Oil Pipelines
Step-by-step explanation:
Thin-walled shell theory is characterised by fundamental assumptions which allow shell structures to be analysed in an efficient manner by effectively reducing the dimensions of the problem from three to two.
A decision on the choice between a thin or thick shell approximation or a full threedimensional analysis is not straightforward, since it depends strongly on the context. The shell thickness t should be small compared to its other dimensions.