Winnipeg | Downtown | True North Square | U/C

[bomberjet]

Originally Posted by cllew

And another section of floor halfway poured when I finished work for the day at 2:30

Originally Posted by drew

^ it's kinda cold outside. They may want to put a tarp over that...

Lol just commented on this in the dCondo thread. It was steamy out there when I seen the pour happening earlier.

[cllew]

I am guessing they will finish the pour tonight which leads me to the question of if PCL can place and finish concrete at night under lights in the winter, why can none of the road contractors do the same in the summer?

[kiwi4life]

Originally Posted by cllew

I am guessing they will finish the pour tonight which leads me to the question of if PCL can place and finish concrete at night under lights in the winter, why can none of the road contractors do the same in the summer?

Yes they sure can... they do it all the time on one project I worked with PCL on in Saskatoon, they did in -25 temperatures in middle of winter. Definitely do able. It — but it works

[Biff]

Same as always - bump to keep the updating photo on the current page...

[bomberjet]

It's now 2:30 and it doesn't like look that concrete has seen a tarp at all since the pour yesterday.

[drew]

^ they might be running sacrificial heat lines thru the slabs to keep them above 5C (very common). Still though, you would think there would be at least an insulated tarp over top...

[bomberjet]

Interesting. Electrical heat I assume as opposed to a liquid within tubing?

[Riverman]

No it is tubing similar to automotive heater hose. Glycol is heated in gas heaters and pumped through the hose.

[cllew]

only flex I saw in the rebar before the pour was the flex (smurf tube) for the electric.

If it was for heating I would expect it to be in an pattern for even heat and the stuff I saw was not.

I know when they were doing the pour for the uncovered section I saw some sort of additive being poured in the mix truck before it discharged. I wonder if that has anything to do with the open surface.

[Bluenote]

Originally Posted by cllew

only flex I saw in the rebar before the pour was the flex (smurf tube) for the electric.

If it was for heating I would expect it to be in an pattern for even heat and the stuff I saw was not.

I know when they were doing the pour for the uncovered section I saw some sort of additive being poured in the mix truck before it discharged. I wonder if that has anything to do with the open surface.

They use a form of antifreeze in the concrete, contractors have been using it for decades.

[drew]

Originally Posted by Bluenote

They use a form of antifreeze in the concrete, contractors have been using it for decades.

Regardless of additives, the code is pretty clear. If the ambient temperature falls below 5C, the concrete must be provided supplementary protection to ensure it doesn't freeze as it cures.

[bomberjet]

Some interesting form work happening in the foreground. Must be structural plaza features and/or building shape starting coming through now.

[Biff]

Notice that most of the truss roof-like structures are gone from the SW corner of the site.

[bomberjet]

And finally some concrete being pumped into the elevator core.

I hope TN will have a time lapse available from the construction cam.

[cllew]

Took me a bit but I think the sunken parts are tree wells. Its sort of hard to see in the pics but there appears to be a drainage pipe on the side of each pit

[IMG][/IMG]

[bomberjet]

Saturday morning and they're pouring concrete. Must be enjoying the weather.

[cllew]

the nice weather helps and maybe making up for the few snow/cold days that PCL shut the site down and there was no work being done on the project. I am sure they want to stay on schedule as much as they can.

[bomberjet]

Wicked view of the site cllew. Thanks for the photos.

[DirtWednesday]

Originally Posted by cllew

Took me a bit but I think the sunken parts are tree wells. Its sort of hard to see in the pics but there appears to be a drainage pipe on the side of each pit

Looks like, once concrete is poured and fills in those holes, they will form the top flair of the columns that will support the public square slab and northeast portion of tower 1. In today's photo there is a little more rebar going on inside those forms.

[bomberjet]

Second floor formwork going in between the church and the elevator core. She's starting to rise!