"John Ray" wrote in message
...
Christine wrote:

If a buckle is likely to occur it is where there is
a weakness in the ballast formation and then both rails buckle out
with sleepers in tacked.

Did you meant to write "intact"? Even so, I don't understand this.
Please explain further.


May I also recommend a current thread, "Stressing CWR on hot days", on
uk.railway.