Discussion:
London Bridge canopy detail
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Basil Jet
2017-10-31 04:00:00 UTC
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Parts of the canopies are linked by metal grids over the trains. They
look like they were put up to support a glass roof but the roof was
cancelled. Does anyone know what's going on? And why are they only a few
carriages long?
Charles Ellson
2017-10-31 04:36:11 UTC
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Post by Basil Jet
Parts of the canopies are linked by metal grids over the trains. They
look like they were put up to support a glass roof but the roof was
cancelled. Does anyone know what's going on? And why are they only a few
carriages long?
People tend not to walk too far from the entrance even with a full
length canopy IME. Full length trains (TL being probably the main
exception) don't run all day but when they do there will tend to be
less time to wait while at other times the trains will be shorter.
Finally - it costs less money not to go all the way with canopies.
Basil Jet
2017-10-31 04:47:05 UTC
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Post by Charles Ellson
Post by Basil Jet
Parts of the canopies are linked by metal grids over the trains. They
look like they were put up to support a glass roof but the roof was
cancelled. Does anyone know what's going on? And why are they only a few
carriages long?
People tend not to walk too far from the entrance even with a full
length canopy IME. Full length trains (TL being probably the main
exception) don't run all day but when they do there will tend to be
less time to wait while at other times the trains will be shorter.
Finally - it costs less money not to go all the way with canopies.
The canopies are, I believe, full length, but the metal grid joining the
canopies over the tracks is a few carriages long.
Charles Ellson
2017-10-31 06:10:54 UTC
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Post by Basil Jet
Post by Charles Ellson
Post by Basil Jet
Parts of the canopies are linked by metal grids over the trains. They
look like they were put up to support a glass roof but the roof was
cancelled. Does anyone know what's going on? And why are they only a few
carriages long?
People tend not to walk too far from the entrance even with a full
length canopy IME. Full length trains (TL being probably the main
exception) don't run all day but when they do there will tend to be
less time to wait while at other times the trains will be shorter.
Finally - it costs less money not to go all the way with canopies.
The canopies are, I believe, full length, but the metal grid joining the
canopies over the tracks is a few carriages long.
Having looked at how the canopies' columns on the platforms were
flapping around in the breeze during construction in some of the time
lapse films, they look like the current function is horizontal bracing
so that in effect there is one overall roof (with holes) across
several tracks.

They might also come in handy for hanging some proper electrification
off at some time in the future. ;-)
John Kenyon
2017-10-31 10:16:56 UTC
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Post by Charles Ellson
Post by Basil Jet
Post by Charles Ellson
Post by Basil Jet
Parts of the canopies are linked by metal grids over the trains. They
look like they were put up to support a glass roof but the roof was
cancelled. Does anyone know what's going on? And why are they only a few
carriages long?
People tend not to walk too far from the entrance even with a full
length canopy IME. Full length trains (TL being probably the main
exception) don't run all day but when they do there will tend to be
less time to wait while at other times the trains will be shorter.
Finally - it costs less money not to go all the way with canopies.
The canopies are, I believe, full length, but the metal grid joining the
canopies over the tracks is a few carriages long.
Having looked at how the canopies' columns on the platforms were
flapping around in the breeze during construction in some of the time
lapse films, they look like the current function is horizontal bracing
so that in effect there is one overall roof (with holes) across
several tracks.
They might also come in handy for hanging some proper electrification
off at some time in the future. ;-)
Overhead at 6.6kV AC?

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