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TransManche Link

TransManche Link is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand TransManche Link rather than just read about it. In short: TransManche Link (Cross Channel Link) or TML was a British-French construction consortium responsible for building the Channel Tunnel under the English Channel between Cheriton in England, and Coquelles in France. At the time, it was the largest privately funded construction project in the world.

TransManche Link — main illustration
TransManche Link — illustration

Key takeaways

  • TransManche Link belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect TransManche Link to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of TransManche Link from memory before moving on to harder problems.

Reference excerpt

TransManche Link (Cross Channel Link) or TML was a British-French construction consortium responsible for building the Channel Tunnel under the English Channel between Cheriton in England, and Coquelles in France. At the time, it was the largest privately funded construction project in the world.

History In April 1985, the British and French governments invited proposals for the construction of a link between the two countries to be privately funded. In July 1985, the British contractors formed Translink Contractors while the French consortium formed Transmanche Construction. On 18 October 1985, these two groups were merged to create the bi-national project organisation TransManche Link (TML). In January 1986, the two governments selected the proposal submitted by Channel Tunnel Group/France Manche for the construction of two undersea tunnels. On 12 February 1986, the Concession Agreement of 1986 between the governments of France and the United Kingdom with the goal of financing, building and operation of the Channel Tunnel. Shortly thereafter, Channel Tunnel Group awarded a contract for the tunnel's construction to TML. While TML designed and built the tunnel, financing of the project was handled by Eurotunnel Group, who would own and operate it upon completion; on top of this arrangement, the British and French governments jointly controlled final engineering and safety decisions, which were later formalised through the Channel Tunnel Safety Authority. The British and French governments awarded Eurotunnel a 55-year operating concession, originally set to running from 1987; this was extended by 10 years to 65 years in 1993. Private funding for such a complex infrastructure project was of unprecedented scale. An initial equity of £45 million was raised, which was added to by £206 million private institutional placement, £770 million was raised in a public share offer that included press and television advertisements, a syndicated bank loan and letter of credit arranged £5 billion. Construction of the tunnel took place between 1988 and 1994; at the peak of construction activity, which employed roughly 15,000 people while in excess of £3 million was being expended each day. In October 1986, Eurotunnel was partially floated, after which point shareholders, rather than the contractors or creditors, exercised direct control over the company. Over the following year, relations between TML and Eurotunnel deteriorated, with significant and increasingly public rows erupting over cost, delays and programme management. During the winter of 1989/1900, Société d'études techniques et économiques, the independent engineering project manager for the tunnel's construction, produced a critical assessment of claimed costs by TML. Nevertheless, in September 1990, TML proceeded to formally submit a claim to Eurotunnel for additional payments related to the construction. By May 1992, TML had filed extra payment claims totalling $2.6 billion for its work. Eurotunnel Group repeatedly alleged poor workmanship in the project, which was disputed by TML. This conflicting claims would result in a long-lasting dispute between TML and Eurotunnel that continued throughout the remainder of the tunnel's construction. Into the mid 1990s, while TML maintained public disputes over a £500 million compensation claim over the delays and cost of the project, the individual contractors allocated considerable sums in reserve for a potential pay-out. The final cost for the tunnel's construction came to around £9.5 billion, roughly double TML's original estimate of £4.7 billion. This overrun has been attributed, in part, as a response to enhanced safety, security, and environmental demands. Furthermore, financing costs were 140 percent higher than forecast. On two occasions, the Bank of England was compelled to intervene in the project's finances. Following the completion of the Channel Tunnel in 1994, TML was dissolved.

Organisation

The participants were as follows: Channel Tunnel Group (later Translink Contractors)

Balfour Beatty Costain Tarmac Construction Taylor Woodrow Construction Wimpey International Construction NatWest Midland Bank France Manche (later Transmanche Construction)

Bouygues Dumez Société Auxiliaire d’Entreprise Société Générale d’Entreprises Spie Batignolles Crédit Lyonnais Banque Nationale de Paris Banque Indosuez

References

Citations

Bibliography Anderson, Graham; Roskrow, Ben (1994). The Channel Tunnel Story. London, UK: E & F N Spon. ISBN 0-419-19620-X. Foreign & Commonwealth Office (1994). The Channel Tunnel Story: The world's longest undersea tunnel system. London, UK: Foreign & Commonwealth Office. Flyvbjerg, B.; Buzelius, N.; Rothengatter, W. (2003). Megaprojects and Risk: An Anatomy of Ambition. Cambridge, UK: Cambridge University Press. ISBN 0-521-00946-4. Kirkland, Colin J., ed. (1995). Engineering the Channel Tunnel. London, UK: Chapman and Hall. ISBN 0-419-17920-8. Wilson, Jeremy; Spick, Jerome (1994). Eurotunnel – The Illustrated Journey. HarperCollins. ISBN 0-00-255539-5.

Illustrations

TransManche Link illustration

Worked examples

Example 1 — a first encounter with TransManche Link

Start with the simplest possible case. Write down what TransManche Link claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to TransManche Link before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about TransManche Link ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of TransManche Link

In research
TransManche Link appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses TransManche Link in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
TransManche Link is common in secondary-school and first-year university syllabi. It links to neighbouring topics British companies established in 1985, Channel Tunnel, Construction and civil engineering companies disestablished in the 20th century, so understanding it makes those chapters shorter.
In everyday life
Look for TransManche Link outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study TransManche Link in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what TransManche Link means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain TransManche Link out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is TransManche Link in simple terms?

TransManche Link (Cross Channel Link) or TML was a British-French construction consortium responsible for building the Channel Tunnel under the English Channel between Cheriton in England, and Coquelles in France. At the time, it was the largest privately funded construction project in the world.

Why does TransManche Link matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study TransManche Link?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on TransManche Link.

Tags

  • British companies established in 1985
  • Channel Tunnel
  • Construction and civil engineering companies disestablished in the 20th century
  • Construction and civil engineering companies established in 1985
  • Construction and civil engineering companies of the United Kingdom
  • Tunnelling organizations

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