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CJB November 17th 09 10:24 AM

Disruption at Feltham
 
Details at:

http://www.southwesttrains.co.uk/engineeringwork.aspx

CJB.

GMac November 17th 09 10:45 AM

Disruption at Feltham
 
On 17 Nov, 11:24, CJB wrote:
Details at:

http://www.southwesttrains.co.uk/engineeringwork.aspx

CJB.


There's a nice pic of the damaged bridge in one of the local papers:

http://www.yourlocalguardian.co.uk/n..._travel_chaos/

Looks like it has been well and truly undermined by the flooded river
and will need some substantial repairs (at least 4 weeks according to
Network Rail).

GM

[email protected] November 17th 09 10:49 AM

Disruption at Feltham
 
On Tue, 17 Nov 2009 03:45:18 -0800 (PST)
GMac wrote:
On 17 Nov, 11:24, CJB wrote:
Details at:

http://www.southwesttrains.co.uk/engineeringwork.aspx

CJB.


There's a nice pic of the damaged bridge in one of the local papers:

http://www.yourlocalguardian.co.uk/n...3.Bridge_colla
se_sparks_travel_chaos/

Looks like it has been well and truly undermined by the flooded river
and will need some substantial repairs (at least 4 weeks according to
Network Rail).


Seems like someone forgot to do maintenance. A bridge shouldn't be washed away
by some perfectly normal heavy rainfall that we get every year despite what
tabloid reporters with the memory of a goldfish seem to think.

B2003



Paul Scott November 17th 09 10:50 AM

Disruption at Feltham
 

"GMac" wrote in message
...
On 17 Nov, 11:24, CJB wrote:
Details at:

http://www.southwesttrains.co.uk/engineeringwork.aspx

CJB.


There's a nice pic of the damaged bridge in one of the local papers:

http://www.yourlocalguardian.co.uk/n..._travel_chaos/

Looks like it has been well and truly undermined by the flooded river
and will need some substantial repairs (at least 4 weeks according to
Network Rail).


Friday, or the weekend,should see the track slewed. I've just posted in the
earlier thread.

Paul S



[email protected] November 17th 09 12:03 PM

Disruption at Feltham
 
In article
,
(CJB) wrote:

Details at:

http://www.southwesttrains.co.uk/engineeringwork.aspx

It doesn't say explicitly, but it appears that the Waterloo-Feltham parts
of the Reading and Windsor services have been cut, rather drastically
cutting Windsor Line frequencies between Clapham Junction and Twickenham.
Why no Waterloo-Twickenham shuttles?

--
Colin Rosenstiel

Bondee November 17th 09 05:15 PM

Disruption at Feltham
 

"Paul Scott" wrote in message
...


Friday, or the weekend,should see the track slewed. I've just posted in
the earlier thread.


Is there room to do that? From memory (with a little help from Google Maps)
there's a pedestrian underpass immediately to the south of the damaged
bridge...

http://tinyurl.com/ycmnm8k
(link to relevant Google Maps page)



Paul Scott November 17th 09 05:28 PM

Disruption at Feltham
 

"Bondee" wrote in message
...

Friday, or the weekend,should see the track slewed. I've just posted in
the earlier thread.


Is there room to do that? From memory (with a little help from Google
Maps) there's a pedestrian underpass immediately to the south of the
damaged bridge...

http://tinyurl.com/ycmnm8k
(link to relevant Google Maps page)


Maybe one line only?

Where does that underpass come out then, I can't see any sign of it on the
north of the tracks?

Paul S



CJB November 17th 09 06:38 PM

Disruption at Feltham
 
Meanwhile for bus livery spotters there are replacement buses from all
over the South offering a connecting service at Feltham for Whitton or
Twickenham. But the connection times are about 30-45 mins due to
having to detour to avoid residential streets &/or pass through other
residential streets.

But at Waterloo there are no trains whatsoever advertised for Reading
or Windsor. There is a simply a couple of LCD signs stating that such
trains can be caught at Feltham.

HOWEVER THERE ARE NO NOTICES ABOUT HOW TO ACTUALLY GET TO FELTHAM. ITS
AS THOUGH THE STATION DOES NOT EXIST. AND THERE IS NO MENTION
WHATSOEVER OF ANY CONNECTING BUS SERVICES BETWEEN WHITTON / TWICKENHAM
AND FELTHAM.

Basically at Waterloo in the rush hour tonight there were thousands of
commuters wanting to get home west of Feltham, and NO information
about how to actually get there.

In addition there are notices on nearly every (all?) SWT stations
about planned Engineering Works for this coming weekend - Nov 21 / 22
- whereby the Hounslow Loop will be closed with a special timetable
which includes stops at Feltham. Seems like despite the total closure
of the mainline through Feltham, the Engineering Works are still to
take place. I would have thought that a priority might have been to
cancel the Works and remove those signs. Its going to be one very
chaotic weekend on SWT.

But par for the course with SWT I guess.

CJB.

[email protected] November 17th 09 09:30 PM

Disruption at Feltham
 
In article
,
(CJB) wrote:

Meanwhile for bus livery spotters there are replacement buses from all
over the South offering a connecting service at Feltham for Whitton or
Twickenham. But the connection times are about 30-45 mins due to
having to detour to avoid residential streets &/or pass through other
residential streets.

But at Waterloo there are no trains whatsoever advertised for Reading
or Windsor. There is a simply a couple of LCD signs stating that such
trains can be caught at Feltham.

HOWEVER THERE ARE NO NOTICES ABOUT HOW TO ACTUALLY GET TO FELTHAM. ITS
AS THOUGH THE STATION DOES NOT EXIST. AND THERE IS NO MENTION
WHATSOEVER OF ANY CONNECTING BUS SERVICES BETWEEN WHITTON / TWICKENHAM
AND FELTHAM.

Basically at Waterloo in the rush hour tonight there were thousands of
commuters wanting to get home west of Feltham, and NO information
about how to actually get there.


Pretty crap coping with the problem by SWT there.

In addition there are notices on nearly every (all?) SWT stations
about planned Engineering Works for this coming weekend - Nov 21 / 22
- whereby the Hounslow Loop will be closed with a special timetable
which includes stops at Feltham. Seems like despite the total closure
of the mainline through Feltham, the Engineering Works are still to
take place. I would have thought that a priority might have been to
cancel the Works and remove those signs. Its going to be one very
chaotic weekend on SWT.

But par for the course with SWT I guess.


Sounds good, but the works will all be the responsibility of Notwork Rail,
not SWT.

--
Colin Rosenstiel

Bondee November 18th 09 01:48 PM

Disruption at Feltham
 

"Paul Scott" wrote in message
...

"Bondee" wrote in message
...

Friday, or the weekend,should see the track slewed. I've just posted in
the earlier thread.


Is there room to do that? From memory (with a little help from Google
Maps) there's a pedestrian underpass immediately to the south of the
damaged bridge...

http://tinyurl.com/ycmnm8k
(link to relevant Google Maps page)


Maybe one line only?

Where does that underpass come out then, I can't see any sign of it on the
north of the tracks?


I'm not sure. I've never really paid any attention to the area until I read
about the bridge collapse. It's not a footpath from the golf course, is it?
I guess the entrance on the other side would be hidden by the trees.



Paul Scott November 18th 09 03:02 PM

Disruption at Feltham
 

"Bondee" wrote in message
...

"Paul Scott" wrote in message
...


Where does that underpass come out then, I can't see any sign of it on
the north of the tracks?


I'm not sure. I've never really paid any attention to the area until I
read about the bridge collapse. It's not a footpath from the golf course,
is it? I guess the entrance on the other side would be hidden by the
trees.


A good quality picture of the failure has appeared on the Network Rail site
now:

http://www.nationalrail.co.uk/servic...idge_Nov09.JPG

Paul S



Graeme[_2_] November 18th 09 03:50 PM

Disruption at Feltham
 
In message
"Paul Scott" wrote:


"Bondee" wrote in message
...

"Paul Scott" wrote in message
...


Where does that underpass come out then, I can't see any sign of it on
the north of the tracks?


I'm not sure. I've never really paid any attention to the area until I
read about the bridge collapse. It's not a footpath from the golf
course, is it? I guess the entrance on the other side would be hidden by
the trees.


A good quality picture of the failure has appeared on the Network Rail site
now:

http://www.nationalrail.co.uk/servic...idge_Nov09.JPG


Nasty!

--
Graeme Wall

This address not read, substitute trains for rail
Transport Miscellany at www.greywall.demon.co.uk/rail

Bruce[_2_] November 18th 09 05:25 PM

Disruption at Feltham
 
On Wed, 18 Nov 2009 16:02:37 -0000, "Paul Scott"
wrote:
A good quality picture of the failure has appeared on the Network Rail site
now:
http://www.nationalrail.co.uk/servic...idge_Nov09.JPG



A couple of tubes of decorator's filler, and the job's a good 'un.


Bruce[_2_] November 18th 09 08:58 PM

Disruption at Feltham
 
On Fri, 20 Nov 2009 02:07:19 -0600,
wrote:

Hmm. Looks to me like part of the top of the arch was filled with rubble.
LSWR jerry building?



The spandrels were always filled with rubble.

Next question?


[email protected] November 18th 09 09:19 PM

Disruption at Feltham
 
In article ,
(Bruce) wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,

wrote:

Hmm. Looks to me like part of the top of the arch was filled with
rubble. LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


OK as long as there is enough structural brickwork containing it, Clearly
there wasn't here.

--
Colin Rosenstiel

Basil Jet November 18th 09 09:26 PM

Disruption at Feltham
 
wrote:
In article ,
(Bruce) wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,

wrote:

Hmm. Looks to me like part of the top of the arch was filled with
rubble. LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


OK as long as there is enough structural brickwork containing it,
Clearly there wasn't here.


Quite, what sort of cowboys would build a bridge that would only last 161
years.

--
We are the Strasbourg. Referendum is futile.



Bruce[_2_] November 18th 09 10:14 PM

Disruption at Feltham
 
On Wed, 18 Nov 2009 16:19:28 -0600,
wrote:

In article ,
(Bruce) wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,

wrote:

Hmm. Looks to me like part of the top of the arch was filled with
rubble. LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


OK as long as there is enough structural brickwork containing it, Clearly
there wasn't here.



"Clearly" there was, because the spandrel walls have successfully
contained their rubble fill for a very long time.

Basil Jet suggests 361 years! ;-)



Richard J.[_3_] November 18th 09 10:18 PM

Disruption at Feltham
 
wrote on 18 November 2009 23:19:28 ...
In article ,
(Bruce) wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,

wrote:


Hmm. Looks to me like part of the top of the arch was filled with
rubble. LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


OK as long as there is enough structural brickwork containing it, Clearly
there wasn't here.


You're talking as though the problem is insufficient brickwork at the
top of the arch. But it's clear from the photo that the failure occurred
lower down, where a great mass of brickwork has moved. Looks like a
gross failure of the foundations.

I wonder why it was necessary to renew so much of the brickwork at the
top of the arch (different colour bricks obvious in photo). This is
pure speculation, but I'm wondering whether there was some earlier
instability of the foundations that resulted in some movement higher up,
which was just patched up rather than properly investigated.
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)

Bruce[_2_] November 18th 09 10:28 PM

Disruption at Feltham
 
On Wed, 18 Nov 2009 23:18:36 GMT, "Richard J."
wrote:

You're talking as though the problem is insufficient brickwork at the
top of the arch. But it's clear from the photo that the failure occurred
lower down, where a great mass of brickwork has moved. Looks like a
gross failure of the foundations.



Indeed it does. It is probably a result of scour under the
foundations as a result of the extreme flows of water.


I wonder why it was necessary to renew so much of the brickwork at the
top of the arch (different colour bricks obvious in photo). This is
pure speculation, but I'm wondering whether there was some earlier
instability of the foundations that resulted in some movement higher up,
which was just patched up rather than properly investigated.



More likely, a combination of gradual long term settlement of the
structure (it appears to be very old) and frost damage to the
brickwork. Problems can then be caused by using hard modern bricks
and hard cement mortar, rather than the hand made clay bricks and
slightly flexible lime mortar that would have been used in the
original structure.


J. Chisholm November 19th 09 09:14 AM

Disruption at Feltham
 
Bruce wrote:
On Wed, 18 Nov 2009 23:18:36 GMT, "Richard J."
wrote:
You're talking as though the problem is insufficient brickwork at the
top of the arch. But it's clear from the photo that the failure occurred
lower down, where a great mass of brickwork has moved. Looks like a
gross failure of the foundations.



Indeed it does. It is probably a result of scour under the
foundations as a result of the extreme flows of water.


I wonder why it was necessary to renew so much of the brickwork at the
top of the arch (different colour bricks obvious in photo). This is
pure speculation, but I'm wondering whether there was some earlier
instability of the foundations that resulted in some movement higher up,
which was just patched up rather than properly investigated.



More likely, a combination of gradual long term settlement of the
structure (it appears to be very old) and frost damage to the
brickwork. Problems can then be caused by using hard modern bricks
and hard cement mortar, rather than the hand made clay bricks and
slightly flexible lime mortar that would have been used in the
original structure.

I don't go with 'constant change' theory. More like a typical foundation
that has been undermined by a particular rainfall event. In the photo
you can see the head loss in the stream and associated turbulence with
eroding power. Once the foundations start to go, there is nothing to
hold up abutment, and then the arch fails.
Numbers of such brick culverts fail, often to be replaced by piled
foundations set further back, and concrete beams spanning the gap and
redundant footings. I remember a serious failure near Godalming, in
'68?, and i know of a place where it is possible to walk beneath a main
line on the footings of an old culvert, with concrete beams of a good
few metres now spanning a much larger gap.

Jim Chisholm

Bruce[_2_] November 19th 09 10:05 AM

Disruption at Feltham
 
On Thu, 19 Nov 2009 10:14:48 +0000, "J. Chisholm"
wrote:
I don't go with 'constant change' theory. More like a typical foundation
that has been undermined by a particular rainfall event.



That's precisely why I stated "It is probably a result of scour under
the foundations as a result of the extreme flows of water."

You obviously didn't bother to read that. However, you quoted it in
your reply.

Do you make a habit of replying to postings you cannot be bothered to
read? Why?


J. Chisholm November 19th 09 10:13 AM

Disruption at Feltham
 
Bruce wrote:
On Thu, 19 Nov 2009 10:14:48 +0000, "J. Chisholm"
wrote:
I don't go with 'constant change' theory. More like a typical foundation
that has been undermined by a particular rainfall event.



That's precisely why I stated "It is probably a result of scour under
the foundations as a result of the extreme flows of water."

You obviously didn't bother to read that. However, you quoted it in
your reply.

Do you make a habit of replying to postings you cannot be bothered to
read? Why?

Sorry. No need to be agressive... I read the last para which implied a
different mode of failure, although I support the fact that modern
bricks and cement based motors, result in increased cracking. I was
always told that mortar is to keep bricks apart, not to stick therm
together.
I think engineers are going back to lime based mortars in many
applications where twenty years ago they would have used cement based
ones without a thought.

Jim

Paul Scott November 19th 09 11:02 AM

Disruption at Feltham
 

"Bruce" wrote in message
...
On Wed, 18 Nov 2009 23:18:36 GMT, "Richard J."
wrote:

You're talking as though the problem is insufficient brickwork at the
top of the arch. But it's clear from the photo that the failure occurred
lower down, where a great mass of brickwork has moved. Looks like a
gross failure of the foundations.



Indeed it does. It is probably a result of scour under the
foundations as a result of the extreme flows of water.


There are suggestions doing the rounds that this structure wasn't built as a
water course, but as a 'subway' under Feltham Yard when first built. There
is a second course of the River Crane under the tracks further east, next to
the recently built PO sorting office.

As a non expert, I'm wondering if the foundations for a subway would meet
the requirements for a culvert.

OTOH if it was built as a culvert, maybe the majority of the flow now goes
through this route, as it is much straighter than the other?

Paul



Richard J.[_3_] November 19th 09 12:38 PM

Disruption at Feltham
 
J. Chisholm wrote on 19 November 2009 12:13:06 ...
Bruce wrote:
On Thu, 19 Nov 2009 10:14:48 +0000, "J. Chisholm"
wrote:
I don't go with 'constant change' theory. More like a typical foundation
that has been undermined by a particular rainfall event.


That's precisely why I stated "It is probably a result of scour under
the foundations as a result of the extreme flows of water."

You obviously didn't bother to read that. However, you quoted it in
your reply.

Do you make a habit of replying to postings you cannot be bothered to
read? Why?

Sorry. No need to be agressive... I read the last para which implied a
different mode of failure,


But the "last para" was in response to my speculation about what led to
the earlier brickwork replacement at the top of the arch, i.e. a
different event to the recent collapse.

Incidentally, was the rain in the Feltham area really that extreme last
week? (I was several hundred miles away at the time.)

There is another photo, of unsupported track, presumably above a point
further along the tunnel, at

http://rail-news.com/wp-content/uplo...Feltham-v2.jpg

(The report containing that photo is at
http://rail-news.com/2009/11/17/100-...-flood-damage/
)
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)

Bruce[_2_] November 19th 09 02:00 PM

Disruption at Feltham
 
On Thu, 19 Nov 2009 12:02:05 -0000, "Paul Scott"
wrote:
"Bruce" wrote in message
.. .
On Wed, 18 Nov 2009 23:18:36 GMT, "Richard J."
wrote:

You're talking as though the problem is insufficient brickwork at the
top of the arch. But it's clear from the photo that the failure occurred
lower down, where a great mass of brickwork has moved. Looks like a
gross failure of the foundations.



Indeed it does. It is probably a result of scour under the
foundations as a result of the extreme flows of water.


There are suggestions doing the rounds that this structure wasn't built as a
water course, but as a 'subway' under Feltham Yard when first built. There
is a second course of the River Crane under the tracks further east, next to
the recently built PO sorting office.

As a non expert, I'm wondering if the foundations for a subway would meet
the requirements for a culvert.



Probably not. There would be no requirement for the foundations of a
subway to be designed to resist the scouring action of flowing water.


David November 19th 09 02:49 PM

Disruption at Feltham
 

There are suggestions doing the rounds that this structure wasn't built as a
water course, but as a 'subway' under Feltham Yard when first built. There
is a second course of the River Crane under the tracks further east, next to
the recently built PO sorting office.


As a non expert, I'm wondering if the foundations for a subway would meet
the requirements for a culvert.


Probably not. *There would be no requirement for the foundations of a
subway to be designed to resist the scouring action of flowing water.


Was there a plan to run the London LOOP walking route under Feltham
Yard? I remember having to make a long detour through Hounslow Heath
and through Whitton to get back to the river. It would seem a good
time to get a new subway built while they're replacing it, since I
doubt the LOOP could have justified it on its own.

Perhaps it was hiking extremists who caused the flood damage by
blocking up the other course!

Paul Scott November 19th 09 04:47 PM

Disruption at Feltham
 

"Paul Terry" wrote in message
...
In message , Paul Scott
writes

There are suggestions doing the rounds that this structure wasn't built as
a
water course, but as a 'subway' under Feltham Yard when first built.


No, the subway (in fact there appears to be two) runs parallel with the
river tunnel, as seen he http://www.geograph.org.uk/photo/108858


Right - well done for finding those pictures. I wonder if that more modern
looking ramped access visible in the various aerial view sites, eg Multimap,
just provides an access into the RH of the two smaller tunnels shown he
http://www.geograph.org.uk/photo/366747
to reduce its effective length, ie just to get under the railway?

I wonder if diverting the mill stream caused greater flow in the main
channel, exacerbating the problem?


AIUI the main flow will follow the path of least resistance. I imagine
under the conditions of heaviest rainfall the Crane drains surface run off
from a vast area?

Another possibility is that the smaller tunnels were some sort of flood
channel of course, as originally built.

Paul S



Paul Terry[_2_] November 19th 09 04:58 PM

Disruption at Feltham
 
In message , Paul Terry
writes

No, the subway (in fact there appears to be two) runs parallel with the
river tunnel, as seen he http://www.geograph.org.uk/photo/108858


Sorry, that's the wrong URL. It should be:

http://www.geograph.org.uk/photo/366747
--
Paul Terry

Paul Terry[_2_] November 19th 09 05:27 PM

Disruption at Feltham
 
In message , Paul Scott
writes

Right - well done for finding those pictures. I wonder if that more modern
looking ramped access visible in the various aerial view sites, eg Multimap,
just provides an access into the RH of the two smaller tunnels shown he
http://www.geograph.org.uk/photo/366747
to reduce its effective length, ie just to get under the railway?


I actually gave the wrong URL for the first photo, but you have quite
rightly spotted the correct one.

Yes, I think the ramp simply goes down to the old foot tunnel, which is
why someone earlier in the thread couldn't see where what appeared to be
a pedestrian subway emerged.

AIUI, there is a footpath above the pedestrian tunnel (which provides a
viable alternative to the long, unlit tunnel), and the ramp was put in
to take pedestrians down to the one bit of tunnel that is still used,
beneath the railway line. The Google satellite image shows this path
quite clearly.

AIUI the main flow will follow the path of least resistance. I imagine
under the conditions of heaviest rainfall the Crane drains surface run off
from a vast area?


I suspect that, like a lot of London's smaller rivers, it takes a huge
amount of surface water when the drains can't cope in heavy rain. The
Environment Agency's flood map shows the banks of the Crane (and its
tributary, the Yeading) virtually all the way from Northolt to
Twickenham.

Interestingly, the same map indicates little or no flood risk for the
mill stream on Hounslow Heath, which I presume means that it is now
pretty much cut off from the main channel. This again could have been a
contributory factor to the bridge collapse on the main channel.

Another possibility is that the smaller tunnels were some sort of flood
channel of course, as originally built.


At least one of them might have been - I can't see any reason for two
parallel foot tunnels. If so, their closure (probably dating back to
when the marshalling yard was built) would certainly have exacerbated
the problem.

--
Paul Terry

Tom Anderson November 19th 09 07:07 PM

Disruption at Feltham
 
On Wed, 18 Nov 2009, Bruce wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,
wrote:

Hmm. Looks to me like part of the top of the arch was filled with rubble.
LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


Now that it's failed, does that make it a cockup spandrel?

tom

--
Tubes are the foul subterranean entrails of the London beast, stuffed
with the day's foetid offerings. -- Tokugawa

Bruce[_2_] November 19th 09 07:36 PM

Disruption at Feltham
 
On Thu, 19 Nov 2009 20:07:01 +0000, Tom Anderson
wrote:

On Wed, 18 Nov 2009, Bruce wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,
wrote:

Hmm. Looks to me like part of the top of the arch was filled with rubble.
LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


Now that it's failed, does that make it a cockup spandrel?



Trust you to come up with that. ;-)


David Biddulph November 19th 09 08:46 PM

Disruption at Feltham
 
"Richard J." wrote in message
...
J. Chisholm wrote on 19 November 2009 12:13:06 ...
Bruce wrote:
On Thu, 19 Nov 2009 10:14:48 +0000, "J. Chisholm"
wrote:
I don't go with 'constant change' theory. More like a typical
foundation that has been undermined by a particular rainfall event.

That's precisely why I stated "It is probably a result of scour under
the foundations as a result of the extreme flows of water."

You obviously didn't bother to read that. However, you quoted it in
your reply.
Do you make a habit of replying to postings you cannot be bothered to
read? Why?

Sorry. No need to be agressive... I read the last para which implied a
different mode of failure,


But the "last para" was in response to my speculation about what led to
the earlier brickwork replacement at the top of the arch, i.e. a different
event to the recent collapse.

Incidentally, was the rain in the Feltham area really that extreme last
week? (I was several hundred miles away at the time.)

There is another photo, of unsupported track, presumably above a point
further along the tunnel, at

http://rail-news.com/wp-content/uplo...Feltham-v2.jpg

(The report containing that photo is at
http://rail-news.com/2009/11/17/100-...-flood-damage/ )


Now at
http://rail-news.com/2009/11/19/100-...damage/--David Biddulph


David Biddulph November 19th 09 10:03 PM

Disruption at Feltham
 
"David Biddulph" groups [at] biddulph.org.uk wrote in message
...
"Richard J." wrote in message
...
J. Chisholm wrote on 19 November 2009 12:13:06 ...
Bruce wrote:
On Thu, 19 Nov 2009 10:14:48 +0000, "J. Chisholm"
wrote:
I don't go with 'constant change' theory. More like a typical
foundation that has been undermined by a particular rainfall event.

That's precisely why I stated "It is probably a result of scour under
the foundations as a result of the extreme flows of water."

You obviously didn't bother to read that. However, you quoted it in
your reply.
Do you make a habit of replying to postings you cannot be bothered to
read? Why?

Sorry. No need to be agressive... I read the last para which implied a
different mode of failure,


But the "last para" was in response to my speculation about what led to
the earlier brickwork replacement at the top of the arch, i.e. a
different event to the recent collapse.

Incidentally, was the rain in the Feltham area really that extreme last
week? (I was several hundred miles away at the time.)

There is another photo, of unsupported track, presumably above a point
further along the tunnel, at

http://rail-news.com/wp-content/uplo...Feltham-v2.jpg

(The report containing that photo is at
http://rail-news.com/2009/11/17/100-...-flood-damage/ )


Now at
http://rail-news.com/2009/11/19/100-...damage/--David
Biddulph



It's done it again. :-(
I wish OE didn't keep gluing my sig to the end of a link.
Should be
http://rail-news.com/2009/11/19/100-...damage/--David BiddulphRowing web pages athttp://www.biddulph.org.uk/


Basil Jet November 20th 09 02:20 AM

Disruption at Feltham
 
Tom Anderson wrote:
On Wed, 18 Nov 2009, Bruce wrote:

On Fri, 20 Nov 2009 02:07:19 -0600,
wrote:

Hmm. Looks to me like part of the top of the arch was filled with
rubble. LSWR jerry building?


The spandrels were always filled with rubble.

Next question?


Now that it's failed, does that make it a cockup spandrel?


LOL!

--
We are the Strasbourg. Referendum is futile.



[email protected] November 20th 09 07:07 AM

Disruption at Feltham
 
In article ,
(Paul Scott) wrote:

A good quality picture of the failure has appeared on the Network
Rail site now:

http://www.nationalrail.co.uk/servic...tional_info/Fe
ltham_Bridge_Nov09.JPG


Hmm. Looks to me like part of the top of the arch was filled with rubble.
LSWR jerry building?

--
Colin Rosenstiel

Theo Markettos November 21st 09 12:43 PM

Disruption at Feltham
 
Bruce wrote:
On Wed, 18 Nov 2009 23:18:36 GMT, "Richard J."
wrote:
I wonder why it was necessary to renew so much of the brickwork at the
top of the arch (different colour bricks obvious in photo). This is
pure speculation, but I'm wondering whether there was some earlier
instability of the foundations that resulted in some movement higher up,
which was just patched up rather than properly investigated.


More likely, a combination of gradual long term settlement of the
structure (it appears to be very old) and frost damage to the
brickwork.


Elsewhere on the South Western Division, I've seen an ex-LSWR bridge where
the facing bricks have been replaced (untidily) with modern ones in just
this way. The old ones were showing frost damage (not bad for 150 years)
but the structure appears sound. This is just replacement of individual
bricks, not whole courses.

I get the feeling it's a one-size-fits-all replacement programme, hence the
miscoloured bricks.

Theo

[email protected] November 21st 09 01:17 PM

Disruption at Feltham
 
In article ,
(Theo Markettos) wrote:

Elsewhere on the South Western Division, I've seen an ex-LSWR bridge
where the facing bricks have been replaced (untidily) with modern ones
in just this way. The old ones were showing frost damage (not bad for
150 years) but the structure appears sound. This is just replacement
of individual bricks, not whole courses.

I get the feeling it's a one-size-fits-all replacement programme,
hence the
miscoloured bricks.


It's probable that bricks of the original colour aren't available. For
some reason that's a big problem these days. We can't even get matching
bricks for a housing scheme near me built in 1975, let alone matching 150
year old ones.

--
Colin Rosenstiel

Paul Scott November 22nd 09 03:27 PM

Disruption at Feltham
 
Latest report is that normal service will resume tomorrow morning:

http://www.southwesttrains.co.uk/eng...9548b8faaad06\
961215

Network Rail's press release shows the track work in progress, I can't work
out
from the pic if they've laid two tracks or just the one. Can anyone clarify?

http://www.networkrailmediacentre.co...ID=4827&NewsA\
reaID=2&SearchCategoryID=8

Paul S



CJB November 22nd 09 05:20 PM

Disruption at Feltham
 
On Nov 22, 4:27*pm, "Paul Scott"
wrote:
Latest report is that normal service will resume tomorrow morning:

http://www.southwesttrains.co.uk/eng...a1c9e4a1d13495...
961215

Network Rail's press release shows the track work in progress, I can't work
out
from the pic if they've laid two tracks or just the one. Can anyone clarify?

http://www.networkrailmediacentre.co...aspx?ReleaseID...
reaID=2&SearchCategoryID=8

Paul S


Try this link:

http://tinyurl.com/yfhofpb

CJB

Bondee November 22nd 09 05:59 PM

Disruption at Feltham
 

"CJB" wrote in message
...
On Nov 22, 4:27 pm, "Paul Scott"
wrote:
Latest report is that normal service will resume tomorrow morning:

http://www.southwesttrains.co.uk/eng...a1c9e4a1d13495...
961215

Network Rail's press release shows the track work in progress, I can't
work
out
from the pic if they've laid two tracks or just the one. Can anyone
clarify?


I'll let you know tomorrow. Looks like the commute will take a little
longer than usual, but not as long as it did last week.
: )




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