Millennium Line - Evergreen Extension | Completed

[officedweller]

Originally Posted by Meraki

Which PDF? This one from July 2013 mentions a 10m diameter TBM.

The Canada Line had dual 5.3m tunnels.

Nice catch - I hadn't noticed that reference. Should provide for a "roomy" ride through the tunnel.
The RFP pdfs on the website would have been a "reference allignment" not necessarily what the successful proponent actually proposed.

Originally Posted by jhausner

There were plans posted somewhere else on the forums of a Brentwood-like development plan for Lougheed. I can't actually see it vanishing like you think. Coquitlam Center is still a jaunt away, and shopping at a mall using transit is a pain in the behind as you can't carry much with you. Also for people living in the area why remove infrastructure they already have.

Shape Properties owns both Brentwood Mall and Lougheed Mall - they plan to redevelopment Lougheed as well.

[Alex Mackinnon]

Originally Posted by Meraki

Which PDF? This one from July 2013 mentions a 10m diameter TBM.

The Canada Line had dual 5.3m tunnels.

Never mind. I may have been wrong on this one. I looked up the TBM details again.

http://www.tunneltalk.com/Evergreen-LRT-...confirms-Caterpillar-as-TBM-supplier.php

9.84m Caterpillar TBM.

[xd_1771]

Originally Posted by Meraki

Which PDF? This one from July 2013 mentions a 10m diameter TBM.

The Canada Line had dual 5.3m tunnels.

The Canada Line had dual 6.1m tunnels, not 5.3m. 5.3m is the size of the SkyTrain tunnel in Kuala Lumpur.

[officedweller]

Originally Posted by Alex Mackinnon

Never mind. I may have been wrong on this one. I looked up the TBM details again.

http://www.tunneltalk.com/Evergreen-LRT-...confirms-Caterpillar-as-TBM-supplier.php

9.84m Caterpillar TBM.

Thanks.

Vancouver confirms Caterpillar as TBM supplier
29 May 2013
Peter Kenyon, TunnelTalk

EGRT Construction, a consortium led by Canadian contractor SNC-Lavalin with Seli as its tunnelling partner, won the Can$889 million construction contract in January (2013). Since the purchase order was placed for the machine, Caterpillar made the shock announcement earlier this month (May) that it will not be taking new machine orders and will be withdrawing from the TBM manufacturing market by 2016 and closing its factory and workshops.

"The manufacturer was chosen because they were the best suited to the needs of the Evergreen Line Project and Caterpillar was able to meet our financial and scheduling requirements," EGRT Communications Manager Jodi Rogers told TunnelTalk from Canada.

"We have had detailed meetings with Caterpillar since the announcement that they are to cease their TBM manufacturing operations, and have received satisfactory assurances on the delivery dates. We are also comfortable that they will continue to support our machine through the construction period."

"The purchase order was placed in January 2013 and delivery of the machine on site is scheduled for late 2013. Initial TBM boring is scheduled to begin in early 2014 and excavation will take approximately 12 months to complete," said Rogers.

...

Caterpillar will supply a 9.84m diameter mixed face EPBM, plus back up, for excavation of the single-bore tunnel section. Specification calls for ability to withstand pressure up to 5 bar.

The project has been in the making for more than a decade. The tunnel section was originally considered at concept planning stage as a twin-running structure requiring use of two EPBs, but EGRT was able to demonstrate significant savings at the bidding stage by suggesting a single bore alignment. Two risk options were offered at bid stage: one in which the geotechnical risks of tunnel construction were shared between contractor and the Client ([BC] Ministry of Transport and Infrastructure), and another where the contractor assumed all risk for differing site conditions.

Under the terms of the three-and-a-half year fixed price DBF contract, EGRT assumes all tunnel-related geotechnical risk and agrees to penalty causes for delays to the summer 2016 project delivery date. During construction EGRT will receive partial progress payments to the value of Can$582 million from the Client, to reflect work completed, and agrees to finance through private instruments the Can$307 million that will be needed to complete the final phases of construction. Approximately Can$256 million of this will be reimbursed at "substantial completion" of the project, followed by a further Can$40 million after a year of satisfactory operation of the line. A further Can$9 million is withheld as security for general warranties.

http://www.tunneltalk.com/Evergreen-LRT-...confirms-Caterpillar-as-TBM-supplier.php

[red-paladin]

I wonder if there will be a partition wall down the middle of the tunnel or not.

[officedweller]

My guess is not, as it would eat up space, unless wind effects come into play and they need a barrier for turbulence, but that probably wouldn't require a full solid wall.

This Doha Metro single bore tunnel looks like the same diameter:


http://www.tunneltalk.com/Doha-Metro-Dec11-Qatar-drives-forward-with-rail-projects.php

Turin (VAL) Metro tunnel:


http://commons.wikimedia.org/wiki/File:Metro_Turin_Italy_Tunnel.JPG

Here's a video of the Turin VAL Metro:

http://www.youtube.com/watch?v=w0gGPJWGDXg

[DKaz]

I would love it if the kept the tunnels nice and open like that, it just looks nicer. Might also help put claustrophobic people at ease.

[jsbertram]

Originally Posted by Meraki

Which PDF? This one from July 2013 mentions a 10m diameter TBM.

The Canada Line had dual 5.3m tunnels.

EVERGREEN LINE RAPID TRANSIT PROJECT PROJECT AGREEMENT
Schedule 4, Appendix I, Page 9

This page also shows why the Charles Street NIMBY didn't need to get compensated for the tunneling even though her neighbours did.

[TransitJack]

I assumed two tunnels also had to do with providing an emergency escape route, a place to go in case of fire or smoke.

[BCPhil]

Originally Posted by TransitJack

I assumed two tunnels also had to do with providing an emergency escape route, a place to go in case of fire or smoke.

That is usually the benefit of having 2 tunnels. I wonder if they will have to build safe rooms every so often like they do for some highway tunnels in the alps, or if we are just going to assume that Skytrain doesn't carry dangerous cargo?

[Meraki]

Originally Posted by xd_1771

The Canada Line had dual 6.1m tunnels, not 5.3m. 5.3m is the size of the SkyTrain tunnel in Kuala Lumpur.

Protrans BC website says 6.1m TBM, 5.3m tunnel.

[xd_1771]

^ Ah, that makes sense then. 5.3m is the size of a SkyTrain (LIM) TBM.

[dpogue]

I took some photos and a video showing the plywood and fencing they're currently got up around platform 3 at Lougheed.

I've uploaded them to an album on Google+: https://plus.google.com/photos/105933958664133015026/albums/5912605598382151729

[Elysia17]

Couple new updates around Burquitlam...








Rebar / Concrete Form for pillars:

[hollywoodnorth]

thanks for the pics! cant wait to see the guideways go up!

[red-paladin]

Awesome!

[GeeCee]

Wow, I hadn't realized that the tunnel portal was there.. I figured that it would be further north. I guess it makes sense given the distance required for the tunnel grade.

[officedweller]

Thanks!

and great video entering Lougheed Station - so far no sign of the small ramp for one of the Evergreen track being levelled out...

[queetz@home]

Yeah, thank you so much for the pics, dpogue and Elysia17! Much appreciate the updates.

Originally Posted by officedweller

Thanks!

and great video entering Lougheed Station - so far no sign of the small ramp for one of the Evergreen track being levelled out...

I'm beginning to think that ramp will not be levelled out, given how the columns and beams supports it (based on what you can see in the video). I think they will somehow incorporate it with the guideway design so there will be a little incline. But I'm not the engineer so I guess we'll find out it a few weeks.

[officedweller]

Could be, as it'll be climbing a hill to go up North Road anyways...