Broadway Subway - Millennium Line Extension to Arbutus | U/C - Page 99

jollyburger · #**1961** Posted **Mar 16, 2023, 2:44 AM**

This excavation is for the Canada/Broadway Line platform connection.

https://twitter.com/broadwaysubway_/status/1635732833837744140

officedweller · #**1962** Posted **Mar 17, 2023, 11:04 PM**

From Broadway Subway twitter:

Work at Broadway City Hall Station posted March 15th:

Check out the excavation @ Broadway-City Hall! You can see light shining through the future station entrance.
The vertical columns support the traffic deck, allowing people to move freely above. There are 70+ metal beams, called struts, supporting the excavation walls below.
https://twitter.com/broadwaysubway_?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor

Work at Maple & Broadway posted March 13th:

Have a look at crews preparing to hang excavated utilities from the traffic deck at Maple and Broadway. This will protect the utilities during upcoming excavation work.
https://twitter.com/broadwaysubway_?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor

jollyburger · #**1963** Posted **Mar 20, 2023, 10:59 PM**

2nd TBM arrived

https://twitter.com/Rob_Fleming/status/1637923616053686273

Diegotheartist1 · #**1964** Posted **Mar 21, 2023, 2:25 AM**

Ayy!

madog222 · #**1965** Posted **Mar 22, 2023, 2:20 AM**

Guideway from today.

Photos by me.

officedweller · #**1966** Posted **Mar 22, 2023, 2:41 AM**

Nice, thanks!

Hooknose · #**1967** Posted **Mar 28, 2023, 3:53 AM**

Quote:

Originally Posted by officedweller

Nice, thanks!

Nothing for the last 5 days

????????

Helvetia · #**1968** Posted **Mar 28, 2023, 4:09 AM**

Quote:

Originally Posted by Hooknose

Nothing for the last 5 days

????????

Our resident reporter madog222 must have been busy elsewhere

madog222 · #**1969** Posted **Mar 28, 2023, 4:25 AM**

Edit: Sorry I'm late

Concrete pour scheduled for tomorrow for the headhouse foundation at Main St (rebar in first pic).

From today:

Not a great picture (impossible from this angle) but whatever, the little cart bringing tunnel segments up to the TBM is visible below the ventilation duct on the right.
Elsie is fully inside the tunnel on the way to Cambie.

Photos by me.

Jimbo604 · #**1970** Posted **Mar 28, 2023, 5:12 AM**

Src: https://twitter.com/broadwaysubway_/status/1638601916333604867?cxt=HHwWhoC29dvwvb0tAAAA "Did you know that the last of 21 elevated guideway columns was poured in February? 🎉Beginning this month, crews are installing the girders that will connect the columns and support the future SkyTrain tracks."

Src: https://twitter.com/broadwaysubway_/status/1639326484254031872?cxt=HHwWgIDQzY-wh8AtAAAA "Crews are laying out the welcome mat for the arrival of #TunnelBoringMachine Elsie at Broadway-City Hall! This Saturday, around 140 trucks will pour concrete into the east part of the base slab foundation for the Broadway-City Hall Station between Alberta and Yukon streets."

madog222 · #**1971** Posted **Mar 28, 2023, 5:45 AM**

^ I still can't get over how close the guideway will be to 887 GNW, that northern portion of the building is laboratory space, I can't image they'll be very happy.

dpogue · #**1972** Posted **Mar 28, 2023, 5:48 AM**

Circa Thursday at Great Northern Way (photo by me):

WarrenC12 · #**1973** Posted **Mar 28, 2023, 3:15 PM**

Two pumps pouring concrete at Main St this morning. Go go go!

FarmerHaight · #**1974** Posted **Mar 28, 2023, 3:32 PM**

I biked by Mount Pleasant Station on Saturday and stopped to take a look. The conveyor belt was spitting out dirt onto a large pile and while I understand the tunneling will take months to complete, I think it's incredible that the volume of dirt coming out is so small.

jollyburger · #**1975** Posted **Mar 28, 2023, 7:51 PM**

Quote:

Originally Posted by FarmerHaight

I biked by Mount Pleasant Station on Saturday and stopped to take a look. The conveyor belt was spitting out dirt onto a large pile and while I understand the tunneling will take months to complete, I think it's incredible that the volume of dirt coming out is so small.

It was approx 324,000m3 of soil from the TBM. 40,000 from each station 55,000 at Broadway/City Hall.

https://www.broadwaysubway.ca/app/upload...s-Technical-Data-Report-October-2019.pdf

madog222 · #**1976** Posted **Mar 28, 2023, 8:23 PM**

Quote:

Originally Posted by jollyburger

It was approx 324,000m3 of soil from the TBM. 40,000 from each station 55,000 at Broadway/City Hall.

https://www.broadwaysubway.ca/app/upload...s-Technical-Data-Report-October-2019.pdf

I think they mean the TBM spoil at the GNW station.

FarmerHaight · #**1977** Posted **Mar 28, 2023, 8:23 PM**

Quote:

Originally Posted by madog222

I think they mean the TBM spoil at the GNW station.

Yes, my bad.

aberdeen5698 · #**1978** Posted **Mar 28, 2023, 10:47 PM**

Quote:

Originally Posted by FarmerHaight

I biked by Mount Pleasant Station on Saturday and stopped to take a look. The conveyor belt was spitting out dirt onto a large pile and while I understand the tunneling will take months to complete, I think it's incredible that the volume of dirt coming out is so small.

Quote:

Originally Posted by jollyburger

It was approx 324,000m3 of soil from the TBM. 40,000 from each station 55,000 at Broadway/City Hall.

Napkin calculation:

324,000m³ over 2 years = 13,500m³ per month = 675m³ per working day = 42m³ per hour for an 16-hour shift = less than 1m³ per minute.

madog222 · #**1979** Posted **Mar 28, 2023, 11:12 PM**

Project news releases said up to 18m/day, at 6m diameter that's a max of 510m³/day for one TBM averaging to 0.35m³/min. They don't continuously progress though (to install the liner segments) so the actual flow whenever spoil is coming down the conveyor would be higher.

jollyburger · #**1980** Posted **Mar 28, 2023, 11:13 PM**

Quote:

Originally Posted by aberdeen5698

Napkin calculation:

324,000m³ over 2 years = 13,500m³ per month = 675m³ per working day = 42m³ per hour for an 16-hour shift = less than 1m³ per minute.

And then two tunnels so half of that since only the single TBM is running.