I think this has already been reported earlier in the thread but GO are expecting to start work on the train shed early in 2009 (as soon as the new platforms 13/14) are finished. The Union Station Modernisation www site
(
http://www.gotransit.com/unionstationrenewal/improvements.htm ) says:
Planned Construction for Train Shed Roof Rehabilitation
A design team has been hired to assist with the train shed roof rehabilitation project. This project will see substantial improvements to the passenger environment at platform level. The work will include:
Replacing the smoke ducts over the tracks with new ones. The historic design is actually very efficient at venting locomotive exhaust away from the passenger zone while keeping out the rain and snow, so the new smoke ducts will replicate the old ones but with new materials that will stand up to the elements better than the originals.
Taking off the built-up roofing and parts of the timber deck and replacing them with a new roof that is more watertight.
Fixing the rainwater downspouts.
Repairing and fixing the steel trusses and painting them. When they were first installed, they were painted a light colour to reflect light. We are going to repaint them in a colour close to the original.
Improving the lighting on the platform to make it brighter and more energy-efficient. The original lights cast some light up towards the roof so that you could see the trusses and the timber roof deck. The new lighting will also do this to make the roof less dark.
Removing all of the old wiring and generally organizing the loudspeakers, signs, and lights into a more efficient pattern.
We are starting to plan how we will do this work. We will have to take tracks out of service one or two at a time and use that area for our trucks and materials. The construction zone will be closed off to separate it from the rest of the passenger areas. Our design team will soon be able to tell us how long this work will take, but we will make every effort to make this time as short as possible.