Millennium Line - Evergreen Extension | Completed

[queetz@home]

Originally Posted by Olden Retreiver

They didn't put a webcam at Lougheed because they're ashamed of it.

Cute. If only it was that simple...

[officedweller]

From the webcam - Lifting a form in place at Lincoln Station:

1:45 pm today (May 7th):

http://wcs.pbaeng.com/projects/R1_Transit

2:00 pm today

http://wcs.pbaeng.com/projects/R1_Transit

2:15 pm today

http://wcs.pbaeng.com/projects/R1_Transit

Meanwhile, at the other end of the station, a rebar column cage was placed:

10:30 am today


10:45 am today


12:02 pm today


1:30 pm today

[queetz@home]

Construction of the Elevated Guideway on Clarke Road and North Road

Construction of the elevated guideway is well underway and the launching truss will continue to move south along the east side of Clarke Road. The launching truss is used to lift pre-cast concrete segments into place before crews connect the segments together to form the overhead guideway beams spanning from column to column.

Crews are currently lifting segments into place over Smith Avenue, and it is anticipated the launching truss will cross over to the centre of North Road at Cottonwood Avenue in late May or early June before continuing to progress south on North Road to Gatineau Place.

- See more at: http://egrtconstruction.ca/media-centre/...oad-and-north-road/#sthash.lhBWZAKA.dpuf

What is interesting here is this...

North Road - June to End of Summer 2014

The hours of work will change to Monday to Saturday, between 6 a.m. and midnight. Work on each elevated guideway span between columns will take approximately two days.

I always thought the construction process is slower than usual for the elevated guideway segments, since someone mentioned that for the Canada Line, it only took "three months". But it looks like they are really going to start hussling once the gantry crane moves to North Road.

[officedweller]

Are those longer hours, too?
Maybe the guideway on North Road is farther from residential and they can work longer.

[queetz@home]

Originally Posted by officedweller

Are those longer hours, too?
Maybe the guideway on North Road is farther from residential and they can work longer.

There are already lots of residential apartments at North Road itself, so its not really farther (it may even be physically closer to residences compared to the Burquitlam station area).

[finalcoolman]

Originally Posted by queetz@home

I noticed that too but I thought its just there to make it "pretty". Shortly after the weekend closure to fix it and prior to the concrete joining, I noted the dislodged gap at the Clarke Road side is still noticable (though fairly minor). I haven't seen them actually align the guideways 100% since I don't go in the area regularly.

Maybe they have aligned them 100% then joined them with concrete. But if that guideway gets dislodged again due to failure of its supports, I doubt the concrete joining them will be strong enough to hold together.

The last time I saw, it seemed that portion of the guideway is still using temporary jacks (or are they temporary jacks?). Are those jacks going to be there forever, perhaps covered in concrete later on?

As of today, all temporary jacks and spacers have been removed. Entire span is resting on just two pads located in the centre of the column instead of the traditional four corners. Kind of looks odd, I don't think there is another instance of this anywhere else in the system.

[aberdeen5698]

Originally Posted by finalcoolman

As of today, all temporary jacks and spacers have been removed. Entire span is resting on just two pads located in the centre of the column instead of the traditional four corners. Kind of looks odd, I don't think there is another instance of this anywhere else in the system.

So is there any sort of lateral restraint on these supports so that the beam can't slide off in the event of an earthquake? Something like a pin that goes into both the support column and the guideway?

[officedweller]

You'd also think that the corners of the guideway box girder would be the strongest points for support, not the centre.

[nname]

Originally Posted by aberdeen5698

So is there any sort of lateral restraint on these supports so that the beam can't slide off in the event of an earthquake? Something like a pin that goes into both the support column and the guideway?

Another one near Coquitlam Station - that one have 3 pads - 2 in the corner on one side, and one in the center on the another side.

[queetz@home]

Originally Posted by finalcoolman

As of today, all temporary jacks and spacers have been removed. Entire span is resting on just two pads located in the centre of the column instead of the traditional four corners. Kind of looks odd, I don't think there is another instance of this anywhere else in the system.

Now I'm curious. I do wonder if this was really how they intended it to be, or a permanent work around after what happened.

I looked at some of the older photos, including from Grant Mattice, and when they put up the guideway segments above Como Lake, it was always been on the temporary supports. So I guess they never intended for the guideway span to rest on the four corners. But only two....especially in such a long span?

We're not the engineers so maybe they know something we don't, but based on your description, it is a bit counterintuitive. Maybe it will feel different if we actually get to see what it looks like....pics?

[jsbertram]

Since there's not much to see with the Evergreen Tunnel while they are changing the TBM for the next phase of tunneling, I'm including a video of a recent tour (not by me, darnit) of the new Second Avenue Subway construction in New York.

http://vimeo.com/93620127

Its amazing what $5 Billion will buy for a mile and a half of new subway tunnels and stations in Manhattan.

They've been at this since 2007 and construction is supposed to be done by December 2016.

At the same time Vancouver managed to get the Canada Line finished before 2010 and the Evergreen Line extension should be finished by Summer 2016.

[cairnstone]

can some one explain what they are doing with the column cap

[queetz@home]

Originally Posted by cairnstone

can some one explain what they are doing with the column cap

It looks like they are simply installing a more specialized column cap (for a column positioned to account for left turn bays on the road) instead of the standard column cap that is formed.

The pic must be a few weeks old, since all columns at North Road are pretty much completed by now, including that one. All they need now are the guideway segments when the gantry crane comes...

[officedweller]

Interesting - I didn't realize that the specialized column caps were prefabricated
- I guess that accounts for their blocky appearance (?)

[TransitFreak]

I finally was able to drive the Evergreen line construction for most of its length. I had a few comments, and unfortunately, I'm not adept with picture taking and so on, so I hope I come across clear:

1. Lafarge Lake - interesting girder for the guidway - it's V-shaped as opposed to rectangular
2. Lincoln Station - nicely taking shape, with piles being driven in at column locations
3. Coquitlam Station - saw the station beams in the park and ride...I noticed the column east of the station bents is the typical column, so it appears it will be the truss style guideway from east of Coquitlam to south of Lafarge Lake
4. Ioco Station - wow, quite impressive the view while driving on Barnet...I apologize to the drivers behind me...lol..at least it was red, and I could stare a bit longer
5. Port Moody Station - got to see the precast tunnel liners stacked there, very cool...also saw east of the station the at-grade sections being built, with some of it tented -
6. North Tunnel portal - wow, seeing the i-beams and elevated guideway out of the tunnel area was cool, and approaching the at-grade section.
7. Burquitlam Station - I saw the problem guideway section. It appears they filled in the gap between the two guideway ends. I assume from the get-go that this would have been a solid segment that allowed a pass through of the post tensioning cables to create, in effect, a super long connected span. I keep referring to this as the Gilmore/Home Depot solution. It appears this was an after-thought, in response to the problem
8. Also, I see that they are doing what past construction practice incorportes - fusing the two ends into the column cap via internal concrete structure that provides the lateral bracing that a previous forumer was asking about. IIRC, they build this after a few segments have passed, and it usually involves working inside the guideway box - hence the hatches on the underside every now and then...
9. North Road - nice to see the columns all nearly complete - looks weird with all the bents to accomodate the left turns, but that's also cool to see. A couple of columsn under complete scaffolding and poly wrap

Overall, it was nice to drive the line and see the progress, I can't tell if the transition from steel beams to the concrete guideway will involve the segment/truss guideway, or a bit of the traditional girders - and if so, if the girders will be flat like Lougheed station, or v-shaped like Lafarge-Lake...

[officedweller]

Posted by Yellow Fever at SSC May 10 and 11 -
North Road @ Lougheed and Clarke Road @ Burquitlam

Originally Posted by Yellow Fever

Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8094


Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8095

Originally Posted by Yellow Fever

Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8096


Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8099

Originally Posted by Yellow Fever

Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8100


Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8104

Originally Posted by Yellow Fever

Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8105


Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8107

Originally Posted by Yellow Fever

Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8108


Flickr 上 Yellow Fever @ SkyscraperCity 的 IMG_8109

[SFUVancouver]

Beautiful. (Suddenly) it looks like SkyTrain line. Very happy to see this set. Thanks for posting.

[queetz@home]

Those pics must be at least two to three weeks old. The last time I was in the area, there was no wooden forms on some of those columns, and the guideway segment that was slanted was already connected with the concrete filling to make it look like one continuous guideway. Plus the gantry crane should be after Smith Avenue by now (the Burquitlam unofficial webcam shows its above the strip mall where Kal Tire used to be).

Nice pics nonetheless, and it does show the slanted guideway segment above Como Lake as being properly adjusted prior to them connecting it with the concrete filling.

[officedweller]

Article on Lincoln Station:

http://www.theglobeandmail.com/report-on...ld-us-a-transit-station/article18610232/

The Evergreen Line’s executive project director said everything came together after the bids had already come in, which meant getting the agreement of the builder to make alterations at a set price.

Amanda Farrell said her advice to anyone planning the same in the future would be to try to get the partners in line well before the bids go out.

But Coquitlam, at least, managed to make the deadline. Coquitlam’s neighbour, the City of Burnaby, also looked at trying to develop a partnership to build Cameron Station just north of the Lougheed Centre mall.

But the city and the province couldn’t agree on how to split the cost of changing the grade of the line so that it could accommodate a station. They were still tussling about it while Coquitlam was finalizing its agreement.

“Burnaby came in late in the game. Now they’ll never have a station there,” Mr. Gravelle said.

[GeeCee]

Neon tubes for Barnet
Commuters, pedestrians and cyclists travelling on Barnet Highway near Coquitlam Centre mall will soon see changes to the lanes.

On Monday, managers overseeing the $1.4-billion Evergreen Line project told Coquitlam city council that neon orange tubes will be installed shortly between the lanes in the stretch of Barnet between Pinetree Way and Johnson Street.

Senior project advisor Jon Buckle said the road barriers will help slow traffic in that busy section, which where construction is taking place for the rapid-transit line, due to open in the summer of 2016.

...

http://www.tricitynews.com/news/259118321.html

I presume that these will be the standard semi-permanent orange traffic tubes that you see in places around town, such as blocking off a left hand turn when the connecting road is not open yet (for example, King Edward Blvd and United Blvd).. I'm really not sure why they thought that location was suitable for a temporary crosswalk.