Quote:
Originally Posted by McC
from the report
this again makes me think that the widening of Scott will be about the City's preferred width for bus lanes, not about an additional 5th lane on Scott.
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I was trying to think innovative. My mistake. Lord knows what four slightly wider lanes are going to look like when converted back for regular use. Perhaps the three-laning plus bike lanes will be extended eastwards.
And it's stuff like this that continue to make me wonder about the collective wisdom at the City:
http://app05.ottawa.ca/sirepub/cache/2/pcj1y40vxhp3d2ecoa4a2vnp/3470012052012042225903.PDF
Quote:
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The RTG proposal provides this capacity by providing a two-vehicle, 98-metre long train whose doors are accessible within the 90-metre long surface platforms. Once ridership rises above the 2031 level, the surface platforms can be easily lengthened at the surface stations to accommodate a variety of future operating scenarios and train lengths. The expandable platforms at surface stations can support a variety of possible approaches to adding long-term capacity including the possibility of future orders for longer vehicles combined into longer trains.
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Ok, so far so good. And note that 90 m platforms can accommodate the doors of a 98 m train, i.e. about 4 m off either end.
So we get to the bit on the tunnel stations:
Quote:
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All vertical circulation elements within stations have been sized for the ultimate capacity of the system. The three downtown underground stations are designed from opening day with a 120 metre platform to avoid any potential for costly excavation in the future. Public and emergency circulation elements have also been sized for these ultimate ridership volumes.
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Umm, 🞵🞵🞵? A three-car train would be 147 m long. We have already just established that we can knock off about 4 m from either end without loss of door capacity. That gets us to just below 140 m, some 20 m longer than we're going to be building.
The only ways we could make full use of the 120 m stations downtown is to run trains with cars of varying length (which I have my doubts about since the practicalities of that mean that each 49 m car would have to be mated with a pair of, say, 38 m cars), add a couple of extra segments into the vehicles we're about to buy, or buy whole new trains and cars.