Quote:
Originally Posted by libtard
I’d say the Alex Fraser approach on either side is just as steep
|
Yeah, I've always heard that "too deep" argument and accepted it, but if we're talking 60 metres of depth over a 3 km run, and if we assume that it's 1/3 + 1/3 + 1/3 for the downgrade, flat run, and upgrade, then we get a 60m elevation difference over 1 km which works out to a grade of 6%. That's within Skytrain technology capabilities.
Now there may be other issues, such as whether the bottom is suitable for tunneling, but on the face of it the "too deep" argument doesn't seem as strong as I always believed it to be.
Threaded Mode