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Author Topic: Berks and Hants Track Condition  (Read 10246 times)
SandTEngineer
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« Reply #15 on: November 29, 2014, 09:33:31 »

You end up with an effect like a wet sponge....very soggy and soft....which leads to poor ride due to no support for the sleepers..... Tongue Roll Eyes

Here is an example:


Image (c)2014 SandTEngineer
Note: Photograph taken whilst line under absolute possession
« Last Edit: November 29, 2014, 11:12:18 by SandTEngineer » Logged
ellendune
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« Reply #16 on: November 29, 2014, 09:41:41 »

You end up with an effect like a wet sponge....very soggy and soft....which leads to poor ride due to no support for the sleepers..... Tongue Roll Eyes

Here is an example:


Image (c)2014 SandTEngineer
Classic example.  The sort of issue that, if not dealt with properly, leads to incidents like the derailment at Gloucester http://www.firstgreatwestern.info/coffeeshop/index.php?topic=13057.0 The clay subsoils around Berkshire (including North Berkshire now Oxfordshire) and Wiltshire are particularly susceptible to this. Our local highway authorities have similar problems. 
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SandTEngineer
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« Reply #17 on: November 29, 2014, 17:11:57 »

...and if you want to see the potential effect on a train of a wet spot see here: https://www.youtube.com/watch?v=L4ntnt4DL60&app=desktop
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JayMac
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« Reply #18 on: November 29, 2014, 18:20:51 »

...and that video was used by the RAIB (Rail Accident Investigation Branch) in their report on the Gloucester derailment.
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