Time for Vancouver to Tear Down Its Viaducts?

[WarrenC12]

Originally Posted by cairnstone

Migrant you need to have a better understanding of infrastructure. The whole Metro Area is kept dry by pumps.

What?

[cairnstone]

All the drainage in the city goes through pumps. There are hundreds of pump stations. Same for the sanitary system.

[Migrant_Coconut]

Originally Posted by cairnstone

Migrant you need to have a better understanding of infrastructure. The whole Metro Area is kept dry by pumps. We have a tunnel under the river that has yet to flood. The pump would feed into a storm line that would also pump into false creek or the Inlet.

Design changes allow parkades to be built below at the water table. RIchmond has 3 levels of underground now.

The underpass will be ideal for this location and will impact the neighborhood the least

Good to know. Thanks.

[Vin]

Originally Posted by WarrenC12

Good thing those never fail, especially when they are needed most.

I do think the underpass will be ok though, it's not huge anyway. If it floods that would be bad, but it wont't be a massive issue.

I guess your OV condo parkade and Massey tunnel, and all skytrain tunnels must be flooded everytime it rains.

Do you use a bucket to drain out the water lad?

Originally Posted by Migrant_Coconut

Well, the irony metre just exploded.

Question is, pump it to where? Anywhere nearby just means it flows right back down.

I don't think you know what you are talking about. Just to educate you: a pump acts to draw water from a lower elevation to a higher one, which can be a storm main that can let water flow by gravitational pull somewhere else, such as the Burrard Inlet. Kapish?

[Alex Mackinnon]

Originally Posted by Vin

I guess your OV condo parkade and Massey tunnel, and all skytrain tunnels must be flooded everytime it rains.

I don't think you know what you are talking about. Just to educate you: a pump acts to draw water from a lower elevation to a higher one, which can be a storm main that can let water flow by gravitational pull somewhere else, such as the Burrard Inlet. Kapish?

For most of Vancouver, everything goes to the Interceptor Tunnel under 8th Avenue, then into a deeper tunnel under Highbury to the Iona WWTP.

The sewers around that area are combined, so storm water and sewage all end up going to the Iona WWTP together, or if there's a big rainfall, then it ends up overflowing into a waterway.

There are a couple lift stations, but in general most of the system runs on gravity, with a big pump at the treatment plant to pull the water back up above sea level for processing and release.

[Migrant_Coconut]

^ And overflows are frequent. Plenty of storm drains in Vancouver end up being giant puddles after a continuous rain... including Gore and Prior, just a few blocks west. Other posters are right to be at least somewhat worried about another Gilmore.

[scottN]

Originally Posted by Alex Mackinnon

For most of Vancouver, everything goes to the Interceptor Tunnel under 8th Avenue, then into a deeper tunnel under Highbury to the Iona WWTP.

The sewers around that area are combined, so storm water and sewage all end up going to the Iona WWTP together, or if there's a big rainfall, then it ends up overflowing into a waterway.

There are a couple lift stations, but in general most of the system runs on gravity, with a big pump at the treatment plant to pull the water back up above sea level for processing and release.

Also any building with a basement deeper than the nearest city sewer line has to pump any seeping groundwater water back up to the height of the sewer.

And in any municipality with a dike on the Fraser river, all the rain runoff has to be pumped up over the dike into the river. Even some substantial streams are pumped up over the dike (i.e. Salmon River in Fort Langley,

[VancouverOfTheFuture]

Vancouver alone has ~30 sewage pumps. i am sure other municipalities have them as well. CoV has dedicated staff for these as well. they are no stranger to sewage pump stations.

[jollyburger]

Here's all the sewer pumps and mains.

https://gis.metrovancouver.org/maps/Sewer

Almost everything goes down the Highbury Interceptor for Vancouver and parts of Burnaby. Kind of interesting that they have to remove air from the system at different points as well. From West 4th until Iona the sewers go up and down ~80m

https://parkboardmeetings.vancouver.ca/2...eptorAirManagementFacilityLocation-2.pdf

[Tvisforme]

Originally Posted by jollyburger

Here's all the sewer pumps and mains.

https://gis.metrovancouver.org/maps/Sewer

Thanks for posting that link. Will Metro have to rework the portion of the North Shore sewer mains between Philip Avenue and the existing Lions Gate treatment plant when the new North Shore facility goes into service? I'm guessing that portion of the main line is sloped down towards the current plant.

[Alex Mackinnon]

Originally Posted by jollyburger

Here's all the sewer pumps and mains.

https://gis.metrovancouver.org/maps/Sewer

Almost everything goes down the Highbury Interceptor for Vancouver and parts of Burnaby. Kind of interesting that they have to remove air from the system at different points as well. From West 4th until Iona the sewers go up and down ~80m

https://parkboardmeetings.vancouver.ca/2...eptorAirManagementFacilityLocation-2.pdf

It doesn't go up. It's a gravity interceptor in a tunnel with a very shallow grade towards Iona. The sewage gets pumped back up to Iona after it crosses under the river.

That diagram shows the tunnel 80m below the ground surface.

[Changing City]

City Council voted in favour of the underpass under the railway today. Two NPA councillrs were opposed, but Councillor Fry (and the remaining Council members) voted for the project. That was in part because Prior and Venables will be downgraded to collector streets with just two lanes and with a 30-km/h speed limit alongside Strathcona Park.

[Metro-One]

Originally Posted by Changing City

City Council voted in favour of the underpass under the railway today. Two NPA councillrs were opposed, but Councillor Fry (and the remaining Council members) voted for the project. That was in part because Prior and Venables will be downgraded to collector streets with just two lanes and with a 30-km/h speed limit alongside Strathcona Park.

I don’t understand. Isn’t this underpass on Prior and Venables?? Rendered as four lanes?

[jollyburger]

Originally Posted by Alex Mackinnon

It doesn't go up. It's a gravity interceptor in a tunnel with a very shallow grade towards Iona. The sewage gets pumped back up to Iona after it crosses under the river.

That diagram shows the tunnel 80m below the ground surface.

Thanks. Here's another paper that has more details on the interceptor

https://www.kwl.ca/sites/default/files/DHModelling-SewerHeadspaceDynamics.pdf

And a history of the Vancouver sewer system:

http://www.metrovancouver.org/events/com...entations/FredNenninger-Presentation.pdf

[WarrenC12]

Originally Posted by Changing City

City Council voted in favour of the underpass under the railway today. Two NPA councillrs were opposed, but Councillor Fry (and the remaining Council members) voted for the project. That was in part because Prior and Venables will be downgraded to collector streets with just two lanes and with a 30-km/h speed limit alongside Strathcona Park.

That's his neighborhood isn't it? Not a conflict?

[Feathered Friend]

I'll admit I'm slightly surprised by who voted in favour and against, but very glad that terrible National option wasn't chosen.

[Changing City]

Originally Posted by WarrenC12

That's his neighborhood isn't it? Not a conflict?

He lives in the area, and was Chair of the Strathcona Residents Association some years ago, before he was elected. That's why it was slightly surprising that he supported the underpass, as the SRA did not support it. He doesn't live on Prior, so is not personally impacted, so didn't have a conflict of interest.

[Migrant_Coconut]

https://www.vancourier.com/news/vancouve...on-train-bridge-in-strathcona-1.23965143

Like Bligh, Hardwick said she was sympathetic to the residents' need to calm Prior-Venables. But she argued the issue was part of a larger discussion on the transportation future of the city, and how it is intertwined with real estate and property development.

“So I feel in looking at this that we are being asked to look at one small component that will then be used as leverage into justifying larger decisions around the transportation land use and planning of this area in the city,” she said.

Forget reactionary, I'm thinking the word for Hardwick is fossilized.

[Changing City]

Originally Posted by Metro-One

I don’t understand. Isn’t this underpass on Prior and Venables?? Rendered as four lanes?

Yes. If you look at the link I added above, there's a bit more detail in the Courier story. Here's a summary of some of the approved scheme - although the City now have to negotiate with CN and other stakeholders, and try to secure funds.

"The traffic-calming measures adopted by council Wednesday included:

That Prior-Venables be downgraded to a “collector street,” with a 30 km/h speed limit near Strathcona Park.

That staff implement an experiment to reduce traffic volumes and speeds on Prior-Venables that could include all-day parking on both sides of the street and temporary curb bulges.

That staff monitor travel time and reliability for transit and emergency services, “short-cutting” on local streets and traffic and safety impacts on other neighbourhoods and arterial routes.

Restrict the route to one traffic lane in each direction."

It means the 22 bus will continue to serve the neighbourhood along Prior Street. Another factor on making a decision now, is that the hospital can obtain construction bids knowing where the road connections and network will be - delaying a decision could have slowed that down, and cost more.

[VancouverOfTheFuture]

wtf? are you kidding me? 1 lane each way?

dumbasses.