Surrey Langley Skytrain - Expo Line Extension | Proposed

[madog222]

Thanks for that confirmation jollyburger. The $150M number was from TL's 2022 business plan.

[bardak]

Originally Posted by Sheba

Yeah the ALR is the only part that concerns me. I rem someone on here comparing the ground there to peanut butter, so deep piles are essential.

I'm hoping they do something similar to what happened when the Millennium Line first opened and start running to the first few stations for testing before opening the whole line. Then we might have a connection to Fleetwood while they're still working on the ALR section (which is the part I think is going to take the longest to build).

Shouldn't be any worse than the Canada Line in Richmond. I remember the elevated section of the Canada Line going up quite fast so hopefully once things start the track won't take to long.

[jollyburger]

Originally Posted by bardak

Shouldn't be any worse than the Canada Line in Richmond. I remember the elevated section of the Canada Line going up quite fast so hopefully once things start the track won't take to long.

Yeah I think unless you are talking about the bog than Richmond is probably just as bad as any conditions along the Fraser Highway corridor.

Research paper on the pile design for the Canada Line sections.

A state-of-the-art methodology was applied to the seismic
design of pile group foundations of the Richmond and
Airport sections of the project. The elevated guideway,
using 6 to 10 m high piers is supported by groups of 4 to
12 piles. Bigger clusters of 16 to 20 piles were required at
Stations.

https://emplexconsulting.com/wp-cont...neRAV_2007.pdf

They said the land for the Evergreen Extension wasn't that great either.

The areas east of the north portal of the tunnel to west of Pinetree Way and the section along
Pinetree Way north of the Lougheed highway generally consist of loose to compact fill, debris fan, and
shoreline deposits, over marine clay/silt deposits, over till-like materials. These areas are likely to
experience significant liquefaction and large lateral spreading as a result

https://www.caee.ca/pdf/Paper_93844.pdf

[Jimbo604]

........So one more of the three major contracts to award?

[mcj]

The Expo and new Broadway extension also have elevated portions constructed on the False Creek Flats, which are also bog/swamp. Shouldn't be a surprise to any civil engineer on how to construct this through the ALR.

[idunno]

I just assume some DEEP piles.