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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
January 13th 10, 08:35 AM
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The London Underground and its South African connection
On 13 Jan., 09:57, Graeme wrote:
http://london.thesouthafrican.com/li...erground-and-i... Didn't Brunel's sheild predate Gateshead? Yes, but Gateshead machine permitted tunneling to be carried out at far lower cost. This was due to the smaller bore diameter, and also the construction of the tunnel itself. I believe Gateshead used pre- fabricated tunnel segments rather than brickwork. These innovations made tunneling affordable. Rememeber that the company that built Brunel's Thames tunnel went into bankrupcy on account of the escalation of construction costs, and that the tunnel wasn't completed until many years later.. |
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#2
January 13th 10, 09:01 AM
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The London Underground and its South African connection
On Wed, 13 Jan 2010 01:35:43 -0800 (PST), amogles
wrote: On 13 Jan., 09:57, Graeme wrote: http://london.thesouthafrican.com/li...erground-and-i... Didn't Brunel's sheild predate Gateshead? Yes, but Gateshead machine permitted tunneling to be carried out at far lower cost. This was due to the smaller bore diameter, and also the construction of the tunnel itself. I believe Gateshead used pre- fabricated tunnel segments rather than brickwork. These innovations made tunneling affordable. Rememeber that the company that built Brunel's Thames tunnel went into bankrupcy on account of the escalation of construction costs, and that the tunnel wasn't completed until many years later.. A good summary, except the name is Greathead, not Gateshead. |
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