CHICAGO | 150 North Riverside | 752 FT | 54 FLOORS - Page 57

chief56 · #**1121** Posted **Jul 16, 2015, 5:29 PM**

Grade 75 rebar in this project as well. Factor in the higher grades and the higher PSI concrete, it will make beefed up projects of the past seem massive. You are seeing 6-8k psi concrete, I believe Trump had 10-12k psi concrete in the core walls.

jc5680 · #**1122** Posted **Jul 17, 2015, 5:56 PM**

joeg1985 · #**1123** Posted **Jul 17, 2015, 6:52 PM**

Love that photo!! Thanks jc!

J_M_Tungsten · #**1124** Posted **Jul 18, 2015, 1:31 AM**

Quote:

Originally Posted by jc5680

Great shot jc!

My addition

jc5680 · #**1125** Posted **Jul 18, 2015, 8:16 PM**

george · #**1126** Posted **Jul 18, 2015, 11:58 PM**

7/18

george · #**1127** Posted **Jul 19, 2015, 2:51 AM**

7/18

Kngkyle · #**1128** Posted **Jul 19, 2015, 4:36 AM**

7/16/15

george · #**1129** Posted **Jul 19, 2015, 11:14 AM**

7/18

BVictor1 · #**1130** Posted **Jul 22, 2015, 4:38 AM**

07/19/15

07/20/15

07/21/15
This shot reminds me of the ribs of a ship...

ChiTownWonder · #**1131** Posted **Jul 22, 2015, 5:12 AM**

wow

aaron38 · #**1132** Posted **Jul 22, 2015, 1:20 PM**

Don't think I've ever seen steel outpace the core like this. Are they trying to cast the horizontal beams IN the concrete of the core? Tying it all together into one massive structure?

It makes sense though, putting the steel in first. Can't put concrete in tension, so can't just tie the horizontal beams to the core and let them pull on it. Got to tie them to the other side and balance it out.

F1 Tommy · #**1133** Posted **Jul 22, 2015, 2:14 PM**

Amazing structure. Having this and next year the Wanda Vista going up should be great for skyscraper geeks.

sentinel · #**1134** Posted **Jul 22, 2015, 3:18 PM**

Quote:

Originally Posted by BVictor1

07/19/15

THIS picture is everything. My GOD.

Steely Dan · #**1135** Posted **Jul 22, 2015, 3:45 PM**

this project just keeps getting cooler and cooler.

fantastic pics everyone, keep 'em coming!

Domer2019 · #**1136** Posted **Jul 22, 2015, 4:39 PM**

Quote:

Originally Posted by F1 Tommy

Amazing structure. Having this and next year the Wanda Vista going up should be great for skyscraper geeks.

COUGHw.p.s.COUGH

Skyguy_7 · #**1137** Posted **Jul 22, 2015, 5:59 PM**

^Do you have insider knowledge of something definitive??

Quote:

Originally Posted by sentinel

THIS picture is everything. My GOD.

Took the words right out of my reply box.

Domer2019 · #**1138** Posted **Jul 22, 2015, 6:49 PM**

I hope it gets its skin as soon as it's feasible. The steel is cool but will look amazing when a wall of glass looms over the river.

Quote:

Originally Posted by Skyguy_7

^Do you have insider knowledge of something definitive??

Took the words right out of my reply box.

Just the aggregate speculation. Wanda Vista isn't definite (for '16, at least) either, is it?

HighRiseGuy0527 · #**1139** Posted **Jul 23, 2015, 1:26 PM**

Quote:

Originally Posted by chief56

Grade 75 rebar in this project as well. Factor in the higher grades and the higher PSI concrete, it will make beefed up projects of the past seem massive. You are seeing 6-8k psi concrete, I believe Trump had 10-12k psi concrete in the core walls.

I hear the concrete is 12k psi but it has to meet some design requirement and is an actual 14 k psi mix.

scalziand · #**1140** Posted **Jul 23, 2015, 8:11 PM**

Got a reference for that?
This one only has the 12000 psi specification.
http://www.prairie.com/news/news_72.asp

IIRC, 432 Park had a similar situation. The concrete had specifications for both strength and stiffness modulus, and in order to meet the stiffness requirement, the strength ended up being way over specification. Not a bad thing, it's just how concrete works.