A tunnel beneath the Solway
Find the work hidden behind a finished tunnel.
A tunnel needs more than its permanent lining. Excavation, temporary access, support, installed systems and evidence of readiness each have a different part to play.
Use the tunnel setting and smaller installation examples to distinguish the desired result from the work, temporary means and evidence it requires.
Explore the questions
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The installation examples test selected distinctions. They do not provide a complete tunnel plan, and the retained Tokyo and HS2 ontology examples are separate cases.