I was enquiring on the Garden forum about outside sheds to store trains and came across some interesting replies that included solutions.
THought I’d share a neat link to a train shed with auto door movie at the end of the page in mpg format (by Yogi):
http://users.stratuswave.net/~wd8jik/door/door.htm
Another shed can be found here:
http://www.mylargescale.com/forum/topic.asp?TOPIC_ID=32061
THese could be adapted to 3-rail trains indoor or out. Also, a neat place to hide a train and have it pop out.