Confederation Line (Stage 1) | In Service 1.0

[Radster]

Originally Posted by orleans_man

Funny thing about the depth...

Many people I know were surprised "how deep" the station is at Lyon during the Kontinuum show.

I can only imagine people's reaction if it had ended up being 40 meters deep

That, and their reactions when they experience how deep Rideau station is!

[1overcosc]

Originally Posted by roger1818

I presume much of the depth was required because of the sandy conditions. If they had cut and covered the tunnel under Rideau, could they have gone shallower?

Probably. In retrospect, they should have just cut and covered the segment underneath Rideau Street from the get-go. Rideau ended up having to be narrowed to 2 lanes for years and fully closed for several months anyway.

[McC]

Queen, too. Hindsight being 20/20, the mining method did not save much, if any, in the way of surface disruptions.

[kmcamp]

Originally Posted by orleans_man

Funny thing about the depth...

Many people I know were surprised "how deep" the station is at Lyon during the Kontinuum show.

I can only imagine people's reaction if it had ended up being 40 meters deep

All 3 stations would have been the deepest in Canada. Alas, we lost our claim to fame, but the stations are still fairly deep compared to the shallow cut-and-cover stations people are pretty familiar with in Toronto and NYC. They're deep even compared to Montreal's downtown stations, though Montreal has numerous stations of similar depths elsewhere that are less frequented by tourists.

[Uhuniau]

Originally Posted by orleans_man

Funny thing about the depth...

Many people I know were surprised "how deep" the station is at Lyon during the Kontinuum show.

I can only imagine people's reaction if it had ended up being 40 meters deep

Pfft. That's deep-ish, but it's no Pyongyang metro!

[roger1818]

Originally Posted by orleans_man

Funny thing about the depth...

Many people I know were surprised "how deep" the station is at Lyon during the Kontinuum show.

I can only imagine people's reaction if it had ended up being 40 meters deep

The deepest Metro station I believe I have personally been in was Lamarck - Caulaincourt in Paris at 25 metres. Most people use the elevator, but there are stairs. It certainly was very deep and walking up the stairs would have been a big effort. The deepest in Paris is Abbesses (1 stop away on the same line) at 36 metres.

As a reference, in a typical building, there is about 3m between each floor (though it does vary), so the 26.5m of Rideau is equivalent to climbing to almost (3 steps shy) the 10th floor of a building (up 9 floors or 27m).

[Uhuniau]

Originally Posted by roger1818

The deepest Metro station I believe I have personally been in was Lamarck - Caulaincourt in Paris at 25 metres. Most people use the elevator, but there are stairs. It certainly was very deep and walking up the stairs would have been a big effort. The deepest in Paris is Abbesses (1 stop away on the same line) at 36 metres.

As a reference, in a typical building, there is about 3m between each floor (though it does vary), so the 26.5m of Rideau is equivalent to climbing to almost (3 steps shy) the 10th floor of a building (up 9 floors or 27m).

Will there be non-emergency stairs? That would be an awesome way to get one's daily step- and flights-count up!

[kmcamp]

Originally Posted by Uhuniau

Will there be non-emergency stairs? That would be an awesome way to get one's daily step- and flights-count up!

There will be:



Take a look at the many flights of stairs that starts near the corner of Rideau and Sussex and go all the way to where the pedestrian bridge over rideau street is, and notice the 4 banks of escalators if coming from that entrance. Note that this is just to get you down to the mezzanine, not the platform itself.

So, if taking the escalators or stairs you come in at that entrance beside Chipotle's, go down one level, then through some doors then down to landing number 1, then repeat 2 more times

[lrt's friend]

I laugh thinking back to those early debates about stations 40 m underground and the time required to reach the surface. Wow! I am so glad we didn't go that route. But a second subway will have to be deeper.

[Beedok]

So, Rideau will be deeper than Edmonton's University Station? Because that thing was impressively deep.

[kmcamp]

Originally Posted by Beedok

So, Rideau will be deeper than Edmonton's University Station? Because that thing was impressively deep.

According to wikipedia: https://en.wikipedia.org/wiki/University_station_(Edmonton)

We beat it by 3.5 m (23 vs 26.5), which means one more story down.

[Uhuniau]

Originally Posted by lrt's friend

I laugh thinking back to those early debates about stations 40 m underground and the time required to reach the surface. Wow! I am so glad we didn't go that route. But a second subway will have to be deeper.

Depends on the route, and whether (and where) it crosses the current tunnel, the new storm sewer tunnel, and, if the carboys have their way, the SHITT, no?

[OttawaSteve]

Originally Posted by J.OT13

The three downtown subway stations projected depth during planning and reality (form Confederation Line website's station descriptions).

Name - cross-country alignment, Queen alignment, reality.

Lyon - 39 m, 15 m, 17.5 m
Parliament - 40 m, 16 m, 19 m
Rideau - 38 m, 29 m, 26.5 m*

*Re-alignment under Rideau Street from Confederation Square allowed for a slightly shallower station depth.

For comparison's sake, here are Montreal metro stations with similar depths (according to this page, which cites Le métro de Montréal : 35 ans déjà by Benoît Clairoux):

Côte-des-Neiges 17.6m
Guy-Concordia 19.2m
Lucien-L'Allier 27.1m

[Radster]

Ottawa's station depths downtown will be similar to those of the Stockholm Metro's Blue Line which is 20-30 metres deep, in bedrock.
http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm

Which brings me to a question I always wanted to ask with regards to the Ottawa downtown stations. Why are they covering everything with concrete? This is precisely what makes the Stockholm Metro so amazing, is to see the bare rock underground. I was there as kid numerous times since my grandma lived there, even took the metro alone at 7-8 yrs old, and the bare rock underground is what stayed in my memories, it was amazing to experience. Plus it provides a perfect canvas for artists. So what was the reason for covering the bedrock with cement in the Ottawa downtown stations, anyone here know?

[acottawa]

Isn't the Stockholm metro sprayed concrete designed to look like rock?

[PHrenetic]

Good Day...

as a guesstimate, partly due to hydrological concerns - massive amounts of water to be dealt with, and also geological concerns, as in the tunnel passes through (I think) at least 2 if not 3 fault line shears. So, for both purposes, some de-linking with the bedrock is a necessity. Unfortunately. Yes, I saw those photos of the Stockholm metro - gorgeous ! I also grew up with the Montreal metro - many stations were forced into creative solutions around hard granite bedrock conditions, giving not so exposed but still beautiful stations. Us ? plain narrow tubes ! but then I'm a pessimist (as well as paranoid).

[casper]

Originally Posted by kmcamp

According to wikipedia: https://en.wikipedia.org/wiki/University_station_(Edmonton)

We beat it by 3.5 m (23 vs 26.5), which means one more story down.

Also beats out Granville Station in the Vancouver Skytrain network. 25m vr 26.5 m. However Granville is a single bank of escalators. Makes for an impressive ride.

[roger1818]

The type of rock they are boring through would have an effect as well. I am not sure, but I believe centretown is built on sedimentary rock, which was formed in layers, so if left exposed, could break off in chunks, which obviously would not be a good thing. Other types of rock (such as granite) would be more likely to hold its shape.

[Uhuniau]

Originally Posted by acottawa

Isn't the Stockholm metro sprayed concrete designed to look like rock?

There are natural rock portions. Stockholm's geology is essentially Canadian Shield. Pretty hard stuff.

[acottawa]

Originally Posted by Uhuniau

There are natural rock portions. Stockholm's geology is essentially Canadian Shield. Pretty hard stuff.

Interesting. I wonder how they drain the water.