platform radii

[Jeremy MultonParticipant]

Can anyone tell me the min. radius that is used in prototype practice for station platform curvature?

[Steve YoungKeymaster]

Hi Jerry. This is quite a complex subject, but I can point you to a Rail Safety and Standards Board document that covers the subject. It is probably far more than you want and I suggest searching for the word radius within the document. Possibly table G 1 on page 15 will answer your question. Please remember that this relates to current legislation and may not be applicable to anything vintage you might be thinking of modelling.
Like all official document, it is not an easy read.
This is the URL for the document.
https://www.rssb.co.uk/rgs/standards/GIGN7616%20Iss%202
Hope this helps.

Steve Young

[Nick RidgwayParticipant]

@Jerry Multon said:
Can anyone tell me the min. radius that is used in prototype practice for station platform curvature?  

I’ve recently designed and constructed a short platform on 4.5 chains radius in 12in:1ft scale, if that helps? The end-throw of a Mk.1 coach was used in the calculation to increase the clearance distance between the running edge and the platform edge. Everything passes normally though as they say at Bank Central Line eastbound, “Mind the gap”.

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