Charles Ellson wrote:
On Thu, 25 Oct 2012 10:44:49 +0100, wrote:
To go off on a complete tangent does any one know if the 3000 volt 3
phase system the Metropolitan railway considered would have been
straightfoward to install, or would that have required some tunnel
alterations.

So maybe conductor rail electrification was already seen as not the
way to do it back then ? ITYF the cut and cover construction of the
tunnels would at the least have given a more horizontal tunnel roof to
work with.


Don't forget that, in 1900, the percentage of the Underground (as
distinct from Tube) lines that were in tunnel was very small indeed.

The cut and cover tunnels were constructed on an ad hoc basis to allow
buildings to be constructed above, in a way comparable to the Gerrards
Cross Tesco project.

"Bruce" wrote


The cut and cover tunnels were constructed on an ad hoc basis to allow
buildings to be constructed above, in a way comparable to the Gerrards
Cross Tesco project.

Most of the original Met (Paddington to Farringdon) was built under streets,
which were reinstated after construction of the railway. The District,
between Westminster and Blackfriars, was built as part of the Victoria
Embankment project which also incorporated the river wall, the road, and
Bazalgette's sewer.
http://www.historytoday.com/roger-hudson/taming-thames

Peter

In article ,
Peter Masson wrote:


"Bruce" wrote


The cut and cover tunnels were constructed on an ad hoc basis to allow
buildings to be constructed above, in a way comparable to the Gerrards
Cross Tesco project.

Most of the original Met (Paddington to Farringdon) was built under streets,
which were reinstated after construction of the railway. The District,
between Westminster and Blackfriars, was built as part of the Victoria
Embankment project which also incorporated the river wall, the road, and
Bazalgette's sewer.
http://www.historytoday.com/roger-hudson/taming-thames

Indeed, even the bored tubes were mostly constructed under streets, as the
need for underground wayleaves and the risk of even the slightest damage
to property made it impossible to get Acts through parliament otherwise.

I CBA to go through "Lost Tube Schemes" in fact I can't even find it
right now (it's lost ). But until the Metroland project came along
there were few if any underground railway proposals for areas that were
not already built up - why would there be, there'd be no traffic for them!

Nick
--
"The Internet, a sort of ersatz counterfeit of real life"
-- Janet Street-Porter, BBC2, 19th March 1996

On Oct 26, 9:29*am, "Peter Masson"
wrote:
"Bruce" *wrote



The cut and cover tunnels were constructed on an ad hoc basis to allow
buildings to be constructed above, in a way comparable to the Gerrards
Cross Tesco project.

Most of the original Met (Paddington to Farringdon) was built under streets,
which were reinstated after construction of the railway. The District,
between Westminster and Blackfriars, was built as part of the Victoria
Embankment project which also incorporated the river wall, the road, and
Bazalgette's sewer.http://www.historytoday.com/roger-hudson/taming-thames

They were very few buildings over Met. Ry tracks. In some instances
their own station buildings spanned the tracks.

Indeed, rather than building over the tracks, their is the instance of
a dummy facades in the Paddington area, i.e. 23 and 24 Leinster
Gardens.

Great Portland Street Station presents an interesting case. I think
the line must slice the corner as Marylebone Road becomes Euston
Road. The station entrance is at the top of Great Portland Street on
an island to the side of Euston Road. At the Western End of the
platforms there is an opening for locomotive exhaust to escape. The
protective walls around the gap are at the side of the ISH parking
lot.