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Building a boat to go beneath a street
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Building a boat to go beneath a street
Purpose-built boat -shaped caisson which will be lowered into the hole made for the extension of the Paris Metro under the River Seine
1906
Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries
Media ID 23087294
© Illustrated London News Ltd/Mary Evans
Beneath Caisson Extension Metro Seine Sep18 Sphere Tunnel Underground
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EDITORS COMMENTS
This photograph, taken in September 1906, captures the intriguing process of constructing a purpose-built boat-shaped caisson for the extension of the Paris Metro beneath the River Seine. The caisson, resembling a large sphere, was designed to withstand the water pressure and allow for the excavation and construction of the tunnel for the metro line extension. The image showcases a team of skilled workers meticulously assembling the caisson on the banks of the Seine. The boat-shaped structure is being built with utmost care and precision, ensuring that it is watertight and strong enough to withstand the weight of the earth and water it will encounter during its descent. Once completed, the caisson would be carefully lowered into the hole that had been excavated beneath the river. The team would then pump out the water inside the caisson, allowing them to construct the tunnel around it. Once the tunnel was complete, the caisson would be removed, leaving behind a new section of the Paris Metro line. The extension of the Paris Metro beneath the River Seine was a remarkable engineering feat, requiring innovative solutions and a high degree of precision. This photograph offers a unique glimpse into the past, providing a fascinating insight into the construction process and the ingenuity of the engineers and workers involved.
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