salsa
Senior Member
If you wait for a good gust of wind to strike the tower, and time your kick perfectly to that wind... you might be able to trick some people
|
|
|
If you wait for a good gust of wind to strike the tower, and time your kick perfectly to that wind... you might be able to trick some people
rbt
Senior Member
Not from a kick. The antennae sways about 1m from center during high winds (100kph), and the skypod (being lower) about 0.5m from center. We get 100km/h gusts every few months.
Next time it's windy, buy a ticket to the skypod and take a pendulum.
Last edited:
Steve X
Senior Member
Yes it should take longer but ML has delayed the project significantly to reduce cash flow at the orders of Queen's Park. Basically 2015-2018 is wasted as mass excavation should have began in 2016 not 2019. It takes an average of 5-7 years to complete a subway regardless of length as long as there is enough workers.
The Crosstown platform length are the same size as the Ottawa Confederation line platforms. Those 2 car trains would fit the station perfectly. I'm sure people would be saying Ottawa is underbuilt but they are only running at 40% capacity. If they operated at 20-25 trains per hour instead of 14, there wouldn't be much crowding on the platforms and on trains. Of course they went cheap...
Kyle Campbell
Senior Member
I thought they were actually shorter 90m vs 120m. Surface in Ottawa is 90m, but the tunnel has longer to allow 5 module LRVs in the future without an expensive underground rebuild. The crosstown on the otherhand has 90m underground stations to allow 3 Flexities to be connected. I'm not sure if they are the full 90m at street level though.
Monarch Butterfly
Superstar
Last edited:
Kyle Campbell
Senior Member
Not sure how long the ottawa station box is, seems a bit longer than another 30m beyond the platform
BurlOak
Senior Member
Yes from a kick. A few assumptions.
1. The diameter of the Tower is 50m (assume cylindrical for simplicity).
2. Height of tower is 550m.
3. Modulus of Elasticity for ~50MPa concrete in tower is 35,000 MPa.
4. I can kick with a 50 kg force (500 N) at a height of 1m above base.
Deflection can be calculated as d = Pb2 / (6EI) x (3L-b) = 1.3 E-11 m, or 13 pm.
So to answer the above question - yes, I can cause it to sway.
To answer the previous question - yes, the Tower is still hydrating and gaining strength.
Coolstar
Senior Member
It's 90m at street level.
Monarch Butterfly
Superstar
To extend the street level stops, they'll just lengthen the platforms into the alleged grassy sections of the right-of-way, and if needed, adjust the roadway.
NoahB
Active Member
I wonder how hard it would be to turn the service areas into a platform if they decide they want to go to 4 or 5 cars per train (120-150m).
smallspy
Senior Member
That's the point of building them like that. All of those services and utilities can be moved if absolutely necessary and relocated elsewhere.
It won't be cheap, but it will be cheaper than trying to extend the station box to lengthen the platforms.
Dan
robmausser
Senior Member
Its possible, and would be considered in the future if ridership absolutely warranted it, because it would be expensive. You'd also have to lengthen the above ground stops.
They would probably look at things like getting some special built, one-train Alstom LRT (like the large ones for Ottawa LRT) that is built out of 9 modules, and thus some capacity gained by not having the "dead" areas between 3 car Flexities, and maximizing the frequency of trains as much as possible before resorting to converting the service areas.
So possible but a huge construction interruption and expensive.
Hopkins123
Senior Member
But that's precisely my point though, it doesn't have to be this way. It doesn't have to take 2-3 times as long to build the Crosstown to completion. The salient comparison to be made here is with Vancouver's Canada Line which went from a napkin drawing to operational from late 2004 to just in time for the 2010 Vancouver Olympics (it actually opened to the public over a month ahead of schedule). Look at the progress of REM thus far as well, started less than 3 years ago and is already like 60% complete.
And these examples costed or are costing less money per capita to boot.
Monarch Butterfly
Superstar
The station boxes along Line 4 Sheppard are built the same way. Those stations currently handle 4-car heavy rail trains. They could (maybe in the next century) get extended to handle 6-car heavy rail trains, if the need will be there.
