Thanks Rick,
That's one book I don't have, although I have quite a lot of info on this
particular tunnel (apart from dimensions). However, I was more interested in
the tunnels seen in pictures 175260 & 72852, 26364 and 87552 on the
Railpictures.net website. http://www.railpictures.net/ These are much older, ;
but obviously capable of coping with double-stacks (yes they probably have been
lowered!).
Anyone got a tape measure and a ladder! (only joking).
I have been reading the interesting article by Roger Hensley on the NMRA Gauge
(Sorry, Gage!) on the NMRA standards site.
http://www.nmra.org/standards/gauge.html
At present, I am using this a guideline, and it appears from what you say about
the dimensions that have been adopted by CP Rail, are just what Roger suggests
for us modellers!
Best Regards
Keith