Millennium Line - Evergreen Extension | Completed - Page 295

nname · #**5881** Posted **Oct 8, 2013, 6:44 AM**

Quote:

Originally Posted by KPELLY

The reason they tunnel uphill, is so the water drains out of the tunnel as they go without the need for pumping.

Also, it takes less energy to transport the soil downward, which has a much bigger mass than the machine...

aberdeen5698 · #**5882** Posted **Oct 8, 2013, 2:20 PM**

Quote:

Originally Posted by nname

Also, it takes less energy to transport the soil downward, which has a much bigger mass than the machine...

Ah, another brilliant reason!

queetz@home · #**5883** Posted **Oct 8, 2013, 5:06 PM**

Quote:

Originally Posted by Vin

Recycled asphalt can be used the same way as gravel to provide temporary surfacing. It can be compacted to withstand more loading, just like gravel. Lots of advantages for having this done: like keeping the site and surroundings clean instead of being muddy.

Ah! That's good to know and it makes sense...learned something new today about construction techniques. Thanks Vin!

dpogue · #**5884** Posted **Oct 9, 2013, 5:07 AM**

Quote:

Originally Posted by GeeCee

BTW Daryl.. http://gizmodo.com/5697423/psa-please-turn-your-damn-cellphone-sideways-when-recording-video

Thanks for the tip!

Quote:

Originally Posted by jsbertram

And also BTW:
How about using a video sharing service that doesn't require someone to create a user account before seeing the video?
There's a popular one the kids are using now-adays ... YouTube

FU Google+

Yeah, that's partly my fault for a bad link last time. Google will auto-backup all photos and videos to G+, but apparently there's no easy way to take them from G+ on to YouTube, because transferring files between services of the same company is some sort of crazy black magic.

Video from this morning. That outbound guideway seems to just keep getting higher, but we'll probably see no hint of the inbound guideway until they have some columns in the parking lot.

officedweller · #**5885** Posted **Oct 9, 2013, 8:26 PM**

Quote:

Originally Posted by dpogue

Video from this morning. That outbound guideway seems to just keep getting higher, but we'll probably see no hint of the inbound guideway until they have some columns in the parking lot.

Thanks - the last one shown seems to be dated Sept 25th.

EDIT: I found it - they aren't in chronological order.

BTW, is there any way you can post them with information showing
(i.e. so you don't have to click on the video to get the date)?

jsbertram · #**5886** Posted **Oct 9, 2013, 10:11 PM**

Quote:

Originally Posted by aberdeen5698

Ah, another brilliant reason!

And the best reason ......
the end portal at Clarke & Como Lake is at a higher elevation up a hill.

aberdeen5698 · #**5887** Posted **Oct 9, 2013, 10:16 PM**

Quote:

Originally Posted by jsbertram

And the best reason ......
the end portal at Clarke & Como Lake is at a higher elevation up a hill.

But they could have gone downhill by starting from that point. Of course we've seen a couple of very good reasons why they'd want to go "uphill".

Alex Mackinnon · #**5888** Posted **Oct 9, 2013, 11:33 PM**

The third reason is that you want the muck to come away from the face. If you're boring downhill the broken rock would tend to want to stay put, causing the TBM to spend extra energy unnecessarily breaking the rock.

It's a minor difference, but mining downhill is always annoying since the muck is always in the way. Hence why making a shaft if the upwards direction (ie with a raise bore) is way cheaper than making a shaft in the downwards direction.

MetroRailRoad · #**5889** Posted **Oct 10, 2013, 1:22 AM**

Thanks for the enlightenment. It's good to know that the private contractor building the line is being cost effective. I can't wait until it opens.

Flash604 · #**5890** Posted **Oct 11, 2013, 6:54 AM**

Quote:

Originally Posted by officedweller

Colony Farm?

In that case - I suspect that maybe it's being used for habitat restoration / compensation for the Port Mann Highway 1 project.

i.e. MoTI making use of a "waste" product from the Evergreen Line as a "construction material" for Port Mann work (instead of purchasing soil from another source).

efficiency in action - someone is thinking....

The thing that makes me think that isn't happening is the amount of waste product from the Port Mann/Hwy 1 work that has been dumped on properties just to get rid of it.

FCE · #**5891** Posted **Oct 11, 2013, 7:28 AM**

Quote:

Originally Posted by aberdeen5698

Interesting that they're boring "uphill". I would have imagined it to be easier to bore "downhill", but I guess that in comparison to the force required to gouge out the rock face "up" vs. "down" hill is probably irrelevant.

To add to the other two points, it's better for emergencies. Should their be a fire, the smoke will accumulate at the top before making its way down the tunnel; reducing the workers exposure to smoke inhalation.

officedweller · #**5892** Posted **Oct 11, 2013, 8:28 PM**

Quote:

Originally Posted by Flash604

The thing that makes me think that isn't happening is the amount of waste product from the Port Mann/Hwy 1 work that has been dumped on properties just to get rid of it.

May depend on the quality / nature of the fill as to what it can be used for.
i.e. Waste concrete wouldn't be suitable for habitat restoration, but would be suitable for roadbed construction.

GeeCee · #**5893** Posted **Oct 13, 2013, 12:47 AM**

Concrete pour on the Inlet Station East Station House happened today..

7:30am

12:15pm

2:00pm

5:15pm

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

STEELWHEELS · #**5894** Posted **Oct 14, 2013, 7:00 PM**

For the benefit of the recent discussion about the slopes of the Lougheed guideway on this thread, here is a link to a page of a document
from the Evergreen Line Project Office Website. This shows the elevation profile for the new Evergreen Line guideway at Lougheed Station for
inbound and outbound tracks (sorry, it is sideways, use rotate to view)...

http://www3.telus.net/pud42/images/Transit/Evergreen%20EAC%20Application.pdf

queetz@home · #**5895** Posted **Oct 14, 2013, 7:19 PM**

Quote:

Originally Posted by STEELWHEELS

For the benefit of the recent discussion about the slopes of the Lougheed guideway on this thread, here is a link to a page of a document
from the Evergreen Line Project Office Website. This shows the elevation profile for the new Evergreen Line guideway at Lougheed Station for
inbound and outbound tracks (sorry, it is sideways, use rotate to view)...

http://www3.telus.net/pud42/images/Transit/Evergreen%20EAC%20Application.pdf

Well, after countless posts of speculation throughout the years, that settles it then. Now we know how the sloping will take place, and its just a matter of waiting for the columns to be erected in the next two months so we know visually how they will execute this. Thanks!

Goodspeed · #**5896** Posted **Oct 16, 2013, 2:49 PM**

Hi folks
Long time lurker, first time poster, but I couldn't resist not posting these. Yesterday my Construction Science Class went on a tour of Armtecs Pre-Cast Concrete factory where they are currently producing the guide way segments for the Evergreen Line. Sorry for the poor quality but all I had with me was my phone.