PHILADELPHIA | Comcast Technology Center | 1,121 FT | 60 FLOORS - Page 69

Cro Burnham · #**1361** Posted **Nov 7, 2014, 6:33 PM**

Quote:

Originally Posted by kraggman

Looking at the pic Londonee posted, the back retaining wall looks sloped down to the left. Optical illusion ??

I think 19 street is tilted upward to the left.

Plokoon11 · #**1362** Posted **Nov 8, 2014, 4:40 PM**

Does anyone know how many cranes will be working on this tower? Just something I thought I'd throw out, and when they will install one. I would image maybe 3 months but who knows.

summersm343 · #**1363** Posted **Nov 8, 2014, 4:43 PM**

Probably two or three.

joemustardo · #**1364** Posted **Nov 10, 2014, 12:20 AM**

How long does anyone think it will be until the core is started the building is up and rising (where the Wilshire Grand Tower is at now)? And does the approaching winter affect the speed of the project?

Plokoon11 · #**1365** Posted **Nov 10, 2014, 1:16 AM**

Id say June it will start rising.

summersm343 · #**1366** Posted **Nov 12, 2014, 1:31 AM**

Awesome update from Lincolndrive/Building Philly

https://www.facebook.com/BuildingPhilly

1487 · #**1367** Posted **Nov 12, 2014, 1:36 PM**

I see the ramp is fully moved to the north. That wasnt done last time I walked by.

Plokoon11 · #**1368** Posted **Nov 12, 2014, 2:21 PM**

Yeah they did that fast, so now they are drilling where they couldn't drill before. Then after that I think they will start drilling in the core plot.

Mappy · #**1369** Posted **Nov 12, 2014, 3:16 PM**

...if ever there should be Spiderman themed construction apparel.

kraggman · #**1370** Posted **Nov 12, 2014, 5:32 PM**

What exactly is the process going on with the rebar installation ??

Baconboy007 · #**1371** Posted **Nov 12, 2014, 6:11 PM**

Quote:

Originally Posted by kraggman

What exactly is the process going on with the rebar installation ??

I've done some concrete work so my guess is that they are tying the different bars together. That was for road construction so this might be different. It helps keep everything in place when your pouring concrete into a mold.

kraggman · #**1372** Posted **Nov 12, 2014, 7:07 PM**

Quote:

Originally Posted by Baconboy007

I've done some concrete work so my guess is that they are tying the different bars together. That was for road construction so this might be different. It helps keep everything in place when your pouring concrete into a mold.

So it's foundation or retaining wall installation. After which the temporary wood retainer will be removed and all back filled.

Baconboy007 · #**1373** Posted **Nov 12, 2014, 8:36 PM**

Quote:

Originally Posted by kraggman

So it's foundation or retaining wall installation. After which the temporary wood retainer will be removed and all back filled.

ConstructStudent · #**1374** Posted **Nov 13, 2014, 2:36 PM**

Quote:

Originally Posted by Baconboy007

So basically you set a form in place which is the black wall. They will the install rebar which gives the concrete the ability to withstand a greater shear stress. Installing rebar is a timely process because the cross sections must be wired together so that is what you see occurring in that picture. Once the rebar is fully installed they will then set the other side of the form to create a box and pour concrete into it and that will form the wall.

shakman · #**1375** Posted **Nov 13, 2014, 4:44 PM**

Quote:

Originally Posted by kraggman

So it's foundation or retaining wall installation. After which the temporary wood retainer will be removed and all back filled.

The lagging boards can remain. The gap between the perimeter wall and the lagging boards might receive a drainage system at the bottom of the wall then backfilled with stone and then structured soil on top. Perhaps the top so many ft /m of the shoring system would be removed. I am on project which used the mentioned method.

JustSomeGuyWho · #**1376** Posted **Nov 13, 2014, 4:48 PM**

It's amazing how deep that hole is ... wonder what they ended up doing with the mountain of dirt and rocks that came out of it. That is a dirt pile the size of a 7 story building taking up an entire city block. Ok, maybe a 5 story building ... hard to gauge ... tall.

kraggman · #**1377** Posted **Nov 13, 2014, 5:04 PM**

Quote:

Originally Posted by shakman

The lagging boards can remain. The gap between the perimeter wall and the lagging boards might receive a drainage system at the bottom of the wall then backfilled with stone and then structured soil on top. Perhaps the top so many ft /m of the shoring system would be removed. I am on project which used the method mentioned.

Thank You shakman and ConstructStudent !!

McBane · #**1378** Posted **Nov 13, 2014, 5:57 PM**

What's with the deeper, second hole? Is that the footprint of the actual tower portion of the building? (As I understand, the building, but not the tower, will cover the entire lot.)

Baconboy007 · #**1379** Posted **Nov 13, 2014, 6:30 PM**

Quote:

Originally Posted by ConstructStudent

So basically you set a form in place which is the black wall. They will the install rebar which gives the concrete the ability to withstand a greater shear stress. Installing rebar is a timely process because the cross sections must be wired together so that is what you see occurring in that picture. Once the rebar is fully installed they will then set the other side of the form to create a box and pour concrete into it and that will form the wall.

Another thing that's pretty neat is if you look at some of the buildings around town you can see the wood grain left it's mark in the concrete. I'm pretty sure this building is a good example of that:

https://www.google.com/maps/@39.9526255,...3m4!1e1!3m2!1sr_zz_vZvsZ_KB32Oz-L-FQ!2e0

shakman · #**1380** Posted **Nov 13, 2014, 6:44 PM**

Quote:

Originally Posted by McBane

What's with the deeper, second hole? Is that the footprint of the actual tower portion of the building? (As I understand, the building, but not the tower, will cover the entire lot.)

Could that be the footprint of the core?