Signage on NIR

[jhb171achill]

Anyone know what these things on platform faces are for? They’re to be seen, all with different numbers and settings, all over the place.

Also, at various spots on NIR, especially between Central and City Hospital, there are dozens of roughly metre-high wooden posts on embankment sides, painted in a very bright day-glo yellow.

Same question….

 

[murphaph]

Some sort of datum plate to indicate the height (depth?) of the rail head from the red sliding marker I would assume (with zero actual knowledge!). It looks like the plate is fixed roughly in position and then the slider is moved to the exact reference point and itself then fixed in position. But I'm just guessing. The yellow signs, no idea, maybe the same idea though?

[Galteemore]

@DoctorPanmight know. Or @Broithecould find a civil engineer in his Yellow Pages. 

Edited December 13, 2022 by Galteemore

[DoctorPan]

Datumn plates usually used to denote rail levels required for the platforms. No idea about the yellow markers, got a photo of them Jonathan?

[airfixfan]

The yellow posts are for areas of Japanese Knotweed  infestation. 

[Broithe]

The red square does look remarkably like a rodenticide block, but it seems an odd place to put one.

[jhb171achill]

Mystery solved then; the yellow posts for invasive weed, and the thing on the platform sides to measure the heights of rats in relation to rail level...................

[Broithe]

36 minutes ago, jhb171achill said:

 the thing on the platform sides to measure the heights of rats in relation to rail level...................

It's a Threshold Infestation Monitor - if there's teeth marks in it, you need a bigger cat.

Reminiscent of the loss of Avro Shackleton WR986 - written off in Malta due to a rat infestation that destroyed the wiring and control cables.

[jhb171achill]

1 minute ago, Broithe said:

It's a Threshold Infestation Monitor - if there's teeth marks in it, you need a bigger cat.

Reminiscent of the loss of Avro Shackleton WR986 - written off in Malta due to a rat infestation that destroyed the wiring and control cables.

Can we put some rats into the 26, 28 and 29 class railcars?

[skinner75]

53 minutes ago, jhb171achill said:

Can we put some rats into the 26, 28 and 29 class railcars?

Would that not leave only the ballast wagons pulled by a tamper as the only rolling stock? Or did NIR get rid of the ballast wagons? 

[Broithe]

19 hours ago, jhb171achill said:

Anyone know what these things on platform faces are for? They’re to be seen, all with different numbers and settings, all over the place.

Also, at various spots on NIR, especially between Central and City Hospital, there are dozens of roughly metre-high wooden posts on embankment sides, painted in a very bright day-glo yellow.

Same question….

 

My tame mole in Network Rail says -

"They're track datum plates to show the cant angle, offset from platform, radius of track, etc.

If they get the dimensions right you don't have to "mind the gap"

Edited December 13, 2022 by Broithe