CHICAGO | BMO Tower | 727 FT | 50 FLOORS - Page 38

rivernorthlurker · #**741** Posted **Dec 11, 2019, 5:05 PM**

Hmm, what's going on at Van Buren and Canal this morning? Anyone?

https://app.oxblue.com/open/clarkcon...erconstruction

Steely Dan · #**742** Posted **Dec 11, 2019, 5:09 PM**

^ looks like it might be soil testing.

with a former parking garage sitting on the piece of land, they might have a fair bit of soil testing to do before the caisson rigs start drilling.

rivernorthlurker · #**743** Posted **Dec 11, 2019, 5:14 PM**

Quote:

Originally Posted by Steely Dan

^ looks like it might be soil testing.

with a former parking garage sitting on the piece of land, they might have a fair bit of soil testing to do before the caisson rigs start drilling.

Ah good point. Hard to do testing under a parking garage. Was hoping they'd roll right into drilling. Hopefully they just take a quick dip, lol.

rlw777 · #**744** Posted **Dec 11, 2019, 5:27 PM**

Quote:

Originally Posted by rivernorthlurker

Hmm, what's going on at Van Buren and Canal this morning? Anyone?

https://app.oxblue.com/open/clarkcon...erconstruction

We don't have to guess there is a second construction cam for this project that is much closer to the action at the same link.

rivernorthlurker · #**745** Posted **Dec 11, 2019, 5:39 PM**

Quote:

Originally Posted by rlw777

We don't have to guess there is a second construction cam for this project that is much closer to the action at the same link.

Feel like such a doofus. Thanks! I think that's newish... Plus OPO rooftop construction too. And Tokoyo Inn!

https://app.oxblue.com/open/clarkcon...erconstruction

r18tdi · #**746** Posted **Dec 16, 2019, 5:01 PM**

Just checked the webcam... banana time??

Steely Dan · #**747** Posted **Dec 16, 2019, 5:14 PM**

^ the new piece of equipment looks like it might be a pile-driver.

perhaps for site perimeter piling?

harryc · #**748** Posted **Dec 16, 2019, 6:02 PM**

Quote:

Originally Posted by Steely Dan

^ the new piece of equipment looks like it might be a pile-driver.

perhaps for site perimeter piling?

The same vertical rigs are used by other contractors for caisson work, haven't seen RevCon use one for caissons yet, but generally the caissons are sunk, the piers installed, and the caissons removed before the sheet pile starts.

Steely Dan · #**749** Posted **Dec 16, 2019, 6:23 PM**

^ i was thinking that it might be for some kind of pile driving because i didn't see any drill bits, caisson sleeves, or rebar cage assembly on site, but there are a couple of long wide flanges laying nearby, so........

harryc · #**750** Posted **Dec 16, 2019, 6:28 PM**

Quote:

Originally Posted by Steely Dan

^ i was thinking that it might be for some kind of pile driving because i didn't see any drill bits, caisson sleeves, or rebar cage assembly on site, but there are a couple of long wide flanges laying nearby, so........

The 12:04 shot appears to show an excavator moving a (modest) belling bit.

Steely Dan · #**751** Posted **Dec 16, 2019, 8:13 PM**

from the webcam, it looks like pile driving to me, but i'm no expert.

can anyone in the area today confirm?

shakman · #**752** Posted **Dec 16, 2019, 9:09 PM**

The drill could be for soldier piles which means excavation will be next. When I zoom in, the resolution is lost.

harryc · #**753** Posted **Dec 16, 2019, 9:55 PM**

Quote:

Originally Posted by Steely Dan

from the webcam, it looks like pile driving to me, but i'm no expert.

can anyone in the area today confirm?

That is definitely a sheet pile vibrator pusher thingy on the red vertical rig.

SolarWind · #**754** Posted **Dec 18, 2019, 7:18 PM**

I believe work has begun on the secant pile wall. I'll post a couple of photos later. Also, two concrete trucks were on site.

SolarWind · #**755** Posted **Dec 19, 2019, 1:20 AM**

December 18, 2019

Fvn · #**756** Posted **Dec 19, 2019, 2:25 AM**

Quote:

Originally Posted by SolarWind

December 18, 2019

That looks like they're coring something. I know when they did the transit center next door they had problems driving sheet piles and had to drill out some old concrete in order to do so.

Concrete trucks are possibly filling an old utility vault/duct.

KWillChicago · #**757** Posted **Dec 19, 2019, 3:08 AM**

So confused, as an amateur. Would love a YouTube video of what makes this one different, digging wise.

rivernorthlurker · #**758** Posted **Dec 19, 2019, 5:06 AM**

Quote:

Originally Posted by SolarWind

December 18, 2019

What size bit is this?

Great pics solar!

LastWyzard · #**759** Posted **Dec 19, 2019, 12:22 PM**

There was a pedestrian tunnel from the demolished parking structure to Union Station. Possibly they are dealing with that?

Ned.B · #**760** Posted **Dec 19, 2019, 2:27 PM**

Quote:

Originally Posted by LastWyzard

There was a pedestrian tunnel from the demolished parking structure to Union Station. Possibly they are dealing with that?

Possibly part of it, but most of the pedestrian tunnel is staying and will connect into the new tower. The tunnel is also mostly located under Canal Street. Only the last ramped section was being removed and rebuilt.

This is a complex site with lots of built history. There is a freight tunnel that runs through the center of it for instance that has to be maintained, and the 'L' used to cross through it as well. I believe the piles from the demolished garage are too high for the new basement level (there might be other foundations as well). and part of the site at the southeast corner used to be part of Canal Street. I know the bus station was delayed many times while discovering previously uncharted abandoned and active utilities. Any one of these things could be involved in the current site work.