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Post by billbedford on May 21, 2019 10:44:34 GMT
Can someone suggest why there are a pair of check rails toward the eastern end of platform 6 at Stratford?
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Post by ted672 on May 21, 2019 11:32:19 GMT
Can someone suggest why there are a pair of check rails toward the eastern end of platform 6 at Stratford? And while we're at it, there's a set around the middle of platform 8. These appear to line up with the subway beneath, but I can't think what the purpose would be. Perhaps the ones at the end of platform 6 are also above the easternmost subway, but again, I can't see the purpose. |
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Post by trt on May 21, 2019 11:42:02 GMT
Perhaps a derailment at that point would crack the tunnel roof?
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Post by Dstock7080 on May 21, 2019 13:10:48 GMT
usually two parallel check rails denoted the position of a current/former tripcock tester?
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Tom
Administrator
Signalfel?
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Post by Tom on May 21, 2019 18:26:47 GMT
Yes - there was a tester at Stratford for a while during the 1990s resignalling.
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Post by brigham on May 22, 2019 8:13:32 GMT
Where a line crosses a bridge, a pair of check-rails is normally fitted in the four-foot, at a suitable distance from the running rails to prevent derailed stock from striking the parapet. They usually have a tapered run-in.
Perhaps the platform subway counts as a bridge?
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Post by billbedford on May 22, 2019 9:45:24 GMT
Where a line crosses a bridge, a pair of check-rails is normally fitted in the four-foot, at a suitable distance from the running rails to prevent derailed stock from striking the parapet. They usually have a tapered run-in. Perhaps the platform subway counts as a bridge? The check rails are about halfway between the central and eastern subways. |
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Post by ted672 on May 22, 2019 11:45:16 GMT
Yes - there was a tester at Stratford for a while during the 1990s resignalling. So that would explain the ones on platform six, however, platform 8 is TfL Rail, down electric. I noticed yesterday evening that in addition to the check rails about a flange width from the inside of the running rail, there's another set of rails to the outside of the running rails. Another odd thing is is that the adjacent track, platform 9, up main, doesn't have check rails over the same location. |
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Tom
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Signalfel?
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Post by Tom on May 22, 2019 18:21:57 GMT
The ones on platforms 5 and 8 are related to a bridge.
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Deleted
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Post by Deleted on May 27, 2019 13:49:17 GMT
Why are they called check rails? Surely they are more of an 'Alignment Rail'
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class411
Operations: Normal
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Post by class411 on May 27, 2019 14:36:28 GMT
Why are they called check rails? Surely they are more of an 'Alignment Rail' 'Check' in this sense means 'stop'. They stop the wheels from doing something everyone would prefer they not do. |
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