How those excavators will be lift up or back on the exact ground level? What is the process of that. As they are 105 + ft down and digging the ground. . What they do to lift up the excavators to make them reach at ground level or any top to bottom they made temporary path or small road

With the price of Vancouver real estate, they went this deep to get 8 stories of underground condos with the sales pitch stating, "Bedrock View".

I wish you had shown them getting those machines out.

Cool video, I've just been watching a company excavating some foundations in Manhattan, got me wondering how they do it and I found your video. Thanks for taking the time to put it all together.

No doubt they were looking at the plans upside-down.

Nice. We finished boaring pile ons in Melbourne 150ft down into the swamp. This is lovely work to see.

Amazing how level, plumb and the hole is. Great job!

Cool urban construction video. I'm looking forward to recording the same in Chicago as soon as it gets warm again here.

That's a deep one! must be twice as deep as anything I've ever worked on, very cool to see.

Great job and VERY nice drilling and shooting!

These deep excavations are mesmerizing when you are standing at the edge... it feels very surreal to see a giant box excavated out of the earth. The Georgia Hotel rebuild was 110ft deep - very impressive. To those saying conveyor belts would be better, it really just doesn't work in this environment, this is a hard heavy material, and a conveyor belt would have a hard time lifting it vertically. At an incline, it would literally need to be wrapped around the inside of the excavation in a spiral to get useful production volume, and just would not be practical. Triple handling the load between three excavators that are sitting in place is actually not that bad efficiency wise - when they need to move, that's where major efficiency impacts occur. Regardless, it's a slow methodical process and strict safety rules for shoring and stabilization need to occur throughout the process. Near the end, cranes with claw buckets are used to extract the last of the material, and often it's incorporated as ballast within the core pour if the material is suitable. As a last step, large cranes hoist these 120,000+ lb machines out of the whole like little toys. Next time you walk by a site like this, stop and appreciate, they are marvels!

That is gonna be one heck of a pool once completed.

I like when building owner think about parking space. We need this guy in Krakow.

*I dig as deep as that trying to find a pair of matching socks every morning*

Wow... this is cool. Thanks for sharing!

I wonder if they were tempted to just keep digging and see where they ended up?

Extreme Excavator work! Really amazing.

Line it with decorative tile and you have a pretty impressive swimming pool.

A time lapse video showing this would have been one of the best things to happen, oh well, thanks anyway

Great video, super. Greatings from Poland

Being that close to the edge my stomach would have butterflies every time I reached inside the hole to scoop material.

I"ve casually seen a few deep excavations in Vancouver - like the Canada Line section of Skytrain. What is that blue-grey ground material and how deep does it go? It seems endless and not to bad to work with for stability and consistency. Looks like glacial (marine) till - but sooo deep

any simpler machinery for this ?

Superb work, and in the video we only see the result of the real critical work : to do the contention walls to avoid collapses. That is the structural key of the whole further works, if you imagine the soil load against all that long and tall wall you can get scared. Congrats to those who calculated and made that critical part and thank you for upload video.

I love to see a video on how you got those big digger out of the hole

i miss the part when they got the excavators out the hole great video anyway, good job

will this place end up requiring like a permanent bilge pump?

Pretty amazing piece of work.

I’ve seen multiple comments about a conveyor system. The steepest angle a standard conveyor works at (around 30 degrees) would require a much larger hole or many conveyors to get to the bottom. Either way they would be in the way of the shot Crete shoring process, excavation and the constant changing depth would require constant modification to the system. A drag slat conveyor or bucket elevator system would possibly work but again the angle is probably too great as those max out at near 50 degrees, are not typically modular, usually aren’t longer than 100 ft and again would need to be constantly modified to accommodate excavation/ would be in the way of the shot Crete shoring process. This is the most efficient way to do this in this depth/footprint of excavation…… that why it’s basically done this way everywhere.

This is "Umbrella Corp" - beginning.

Magnifica perspectiva de un solar en construcción y el empleo por parte de una de las excavadoras de una especie de uña en el lugar del cazo.No lo había visto en obras en España!!!!!

Great job 👍😊✌️

Those are some realistic looking RC toys.

Waauuu...amazing..👏👏

Great video bro

A very large Manitowoc 7 yard cable clam shell bucket crane up top be more efficient.Could reach most of pit floor. Nice job.

My old man worked for Lafarge and before Lafarge came around, he's been on almost every jobsite in city, including rebuilding the footing under lions gate bridge, Stanley park side, I went with him on that job, BC Place Stadium, skytrain etc, it's endless. This hole is shallow compared to some of the buildings

nice cuts nice video :)

How did they do waterproofing of basements? What was the methodology? Was there in soil backfilling between basement walls and pit walls?

Good job. We are going to have such a job, digging 10 meters (one third of yours). We will make a ramp while excavating and send dump trucks down to load the excavated soil. At the end, the excavator will dig the ramp from bottom to top to finish the job. In your case, with 105 ft, I don't think ramping would be possible. Have you considered this alternative?

What type of material was that I seen no shoring on the sides!

I saw an excavation like that , when they make one of the Casino in the Las Vegas Strip, they use the depth , to put the parking garage in the bottom.

Great job ❤

I wonder how many cool artifacts, bones, fossils, etc are digger up and never found in construction like this. They just get relocated and used as clean fill somewhere.

impressive. imagine the planning that goes into a project like this. is it still under construction now? (June 2019)

Is it legal not to have the scaffold stairs end with a 20 foot ladder? what if someone is injured and needs to be evac'd?

That's one deep hole..cool video btw.

That would be a really great place for a building once they're finished excavations.

I have a question. What if the excavators are down there while it’s raining really hard. Will it start to flood down there?

Anyone know the soil type for this part of Vancouver? Looks like very hard clay from these angles, and from the types of equipment being used.

Why didn’t they use a conveyor?

Good work...

Impresionantes mega construcciones .😱😱😱

what is that retaining wall method called? is it a Diaphragm cut off wall?

Fabulous video!! I am from NYC, and have never seen an excavation go that deep, since in many parts of NYC rock is not too far below the surface. The deepest I have seen for building foundations go down perhaps 50 to 60 feet. This video is impressive at 105 feet to bottom grade. Looking at this excellent video, I have a few questions: I see the tiebacks in the excavation walls. What kind of geology exists there in Vancouver? No hammering was evident, but a single-tooth ripper was in use. I saw that rock was a good ways down. Spoil had to brought up via relay, from excavator to excavator, working on benches to get the spoil loaded into trucks. Another question: The excavator at the street level was digging at maximum depth, well before bottom grade was reached. How was the spoil pile against that corner finally removed? I am guessing by clamshell? Thanks for posting this fine video. As a construction buff, I always enjoy seeing how things are done in different parts of the world. Thanks again for posting this.

My question is where do they put all the dirt that comes out of the hole. I dig a small hole in my backyard and I struggle to get rid of it.

What are the cylinder things for at 7:00? It looks like a tunnel that men can climb down, but for what? How high up does it go?

They did this in Seattle way back with steam electric shovels and conveyors that loaded barges and dumped it into the bay. Denny regrade I believe

why not just run a conveyor system to the top? that seems so inefficient

how long did it took to dig that deep? how much was it? I wanted to see how u guys were able to take that huge excavation machine out from the base.

How do those dozers and digger buckets get out of the hole eventually?? This is amazing

Thanks for the great video! My question is: how is the excavator retrieved from the pit/excavation ?

So are the side walls slurry walls? How did they get the excavators out afterwards?

Damn, thats hella deep!

Thought this was one of those billionaire basement stories: guy buys small house in London, Manhattan and can't go up so they dig down. More than one story from England where they had to leave the backhoe down in the hole. Took it down in pieces and couldn't fit the pieces up.

There is one in Portland, Oregon that is 8 parking levels. Don't know how many feet.

How did u get the excavators out of there and the balance of the soil

Why didn’t you all use a conveyor belt to send the dirt and rock up ?

А ленту конвейерную поставить нельзя? Как на элеваторах

I wish you would have showed how they got the machines out great video

4:51 The topside excavator is working blind.... the operator can't even see into the pit.

Surely they have heard of conveyors and cranes..

Does that have a hydro station planned in the basement? Do you have a video of the excavators getting removed?

So it's not a swimming pool ? 😢 Very impressive, how come bigger machines weren't used ?

How do you square something like that up

Why they are digging

Why does the dirt look like that? N how are the walls staying up. Are they putting concrete on them every few feet or is that the gray dirt that there digging ?

men love hole work.

Surely they could use conveyor belts for the finer stuff!

It was at the 104 ft Mark when they realized you can’t actually dig to China and the new trade route was doomed to fail.

Hmm... this reminds me of the time I went to find something in my son's room.

umm i get having saftey regs but why in the hell do the guys working down on the floor have on fall protection? 🤔

I am amazed at all of the armchair quarterbacks proposing clamshells or conveyor belts to do this excavation. They so obviously know nothing about construction sites in a downtown core and the challenges that go along with them. But common sense should tell them that the companies contracted for this job just might have a little knowledge about what they are doing. These jobs are put up for tender and the lowest bid usually gets the job. Sure some contracts are awarded on a cost plus basis, but those are usually government contracts or large utilities like nuclear power plants and hydroelectric dams. Even then the costs have to be justified and are scrutinized every step along the way.

wow...great catch here.....getting those excavators out must have been something to see for sure....surprised they didn't hit water down that deep...* thumbs up from ....... ;-) 1FM Lake George, NY

How did they get the excavators out?

The real question is how do you get them out

3 dene texnikani ora yigincax birdene 17 metrelik uzun qol getirerdiler bir normal qolu olan da iceride isdiyerdi bu daha yaxsi olmazdimi ?

A 955 would have been in heaven in that pit pushing the material to the excavator 😉👌 Nonetheless great job 👍👍

How do they get the vehicles out?

How do ya clean the corner out?

wondering if the walls are natural or did they make slurry walls prior to the excavation ? Anyone here know?

how do they get those excavator out there?

Almost reaching the earths crust lol

I can’t stop thinking about the cost of the fuel for this type of project. 🤯

Could you please explain how soil collapse has been protected in such deep excavation

Looks like good operator skills was involved in this,

What type of excavation is this? What 's the name for this excavation method?

What are the average size of the meshed panels? Standsrd 7'x10'? Or do you larger panels for a job this size?

I wish you had shown them getting those machines out also. Only reason why I even watched it.

At about the six minute mark that bottom excavator started to remind me of the times I have tried to repair broken relationships.