Brookfield Place Calgary | 247M - 56F | Construction

[craner]

Oooohhhh - seems as though we may have an insider on this job.
Welcome Tower Builder and thanks for posting that info - please continue to do so.

[lineman]

Yes, please.

[TriWolf]

Sounds like slow but steady progress! I suppose that's to be expected for such a large beefy building :o

[Tower Builder]

Thanks for the welcomes. This raft slab is like nothing ever built in Calgary, including The Bow.

[Full Mountain]

Originally Posted by Tower Builder

Thanks for the welcomes. This raft slab is like nothing ever built in Calgary, including The Bow.

In size or in design?

[s211]

Originally Posted by Tower Builder

Thanks for the welcomes. This raft slab is like nothing ever built in Calgary, including The Bow.

Even the court house that was built a few years ago?

[Tower Builder]

Mostly in design...but size too.

[Full Mountain]

Originally Posted by Tower Builder

Mostly in design...but size too.

Can you give us any details? I don't know much about concrete foundation design, would be cool to understand the basics of it.

[You Need A Thneed]

At 2000 tonnes, it's nothing like the BOW in size, for sure. The Bow was 30,000 - 40,000 tonnes.

[Surrealplaces]

Originally Posted by You Need A Thneed

At 2000 tonnes, it's nothing like the BOW in size, for sure. The Bow was 30,000 - 40,000 tonnes.

Was the Bow pour both sides of 6th? I can't remember.

[You Need A Thneed]

Originally Posted by Surrealplaces

Was the Bow pour both sides of 6th? I can't remember.

mostly lined up with the footprint of the building, so all on the North side.

[Bigtime]

Originally Posted by You Need A Thneed

mostly lined up with the footprint of the building, so all on the North side.

Yup, the pumper trucks were all around the north block, like a reverse spider with all the booms dropping down into the pit.

[Tower Builder]

The Bow raft slab was 2266 tonnes of rebar, 13775.5 cubic meters of concrete and it took 39.5 hrs to pour.

[Tower Builder]

Originally Posted by s211

Even the court house that was built a few years ago?

There have been several buildings with larger footings than the Calgary Courts Center. Centenial Place, The Bow, Eight Ave Place to name a couple.

[DoubleK]

I don't remember ever looking into the hole for the Bow, but the hole they have dug for Brookfield is super deep.

I will be following this project with great interest.

[Shylo]

BF0603-Pan2 by ShyloGR, on Flickr

BF0603-Pan2 by ShyloGR, on Flickr

[Bokimon]

Great picture.

One of the things that really interests me is the logistics behind an excavation and site shoring of this magnitude. Notice this site does not seem to use any of the timber lagging to pin against the surrounding soil. Instead a combination of caisson and secant pilings and the lower levels, natural clay?? It can't be bedrock..
This natural layer seems hard enough to not require usage of steel piles or anchoring pins. Somebody needs to do a timelapse of an excavation/shoring in progress so I can see how the shoring work is done.. Apparently the loud scraping noises we been hearing for months has been the excavators CARVING the bentonite mix that encases the perimeter up to the steel pile face which you can see some evidence of what it looks before and after on the north perimeter of the site.

I would really like to see how they get these 4-5 storey long H piles fed into a hole that deep at once. The auger rigs I see on the site do not look 4-5 storeys high..Unless they are?
Big pits are very fascinating as it is amazing how much ground it has to retain from collapsing into the pit as well as other site remedies like ground water which for this site, there hadn't been any really!

That raft slab also looks like a monster, showing us the orientation of the first tower going East-West.
A timelapse of the raft pour also needs to be done by somebody. This is going to be the largest pour since the Bow and EAP. It must be at least 3m thick in a jungle of rebar.

[DizzyEdge]

Looking at that photo I'd really like to see some renderings for a Len Werry recladding, particularly because it, along with the church and the Bay (which also needs a freshening up) will be be the main view from the corner plaza.

[Full Mountain]

Originally Posted by Bokimon

Great picture.

One of the things that really interests me is the logistics behind an excavation and site shoring of this magnitude. Notice this site does not seem to use any of the timber lagging to pin against the surrounding soil. Instead a combination of caisson and secant pilings and the lower levels, natural clay?? It can't be bedrock..
This natural layer seems hard enough to not require usage of steel piles or anchoring pins. Somebody needs to do a timelapse of an excavation/shoring in progress so I can see how the shoring work is done.. Apparently the loud scraping noises we been hearing for months has been the excavators CARVING the bentonite mix that encases the perimeter up to the steel pile face which you can see some evidence of what it looks before and after on the north perimeter of the site.

I would really like to see how they get these 4-5 storey long H piles fed into a hole that deep at once. The auger rigs I see on the site do not look 4-5 storeys high..Unless they are?
Big pits are very fascinating as it is amazing how much ground it has to retain from collapsing into the pit as well as other site remedies like ground water which for this site, there hadn't been any really!

That raft slab also looks like a monster, showing us the orientation of the first tower going East-West.
A timelapse of the raft pour also needs to be done by somebody. This is going to be the largest pour since the Bow and EAP. It must be at least 3m thick in a jungle of rebar.

I would guess they are feed in sections and welded together.

[Surrealplaces]

Loving these large pano shots!

Originally Posted by Shylo

BF0603-Pan2 by ShyloGR, on Flickr