WTC Tower One - by Skidmore, Owings & Merrill

**RKOwens44** · January 17th, 2011, 01:09 PM

Originally Posted by ZippyTheChimp

Then & Now

Wow, very cool. I've been flipping back and forth between to the two pics to see the differences. It would be awesome if you could take another pic from that exact location like once every few months or so.

**Nomadd** · January 17th, 2011, 03:28 PM

I was helping the recycling effort my making empty beer cans last night with a concrete guy and he couldn't answer a question of mine, so I hoped somebody here might know.
Is the floor and core concrete different formulas? I was pretty sure that the minimum floor pouring temps were higher than minimum core pouring temps, since the core probably puts out quite a bit of heat while curing, and was wondering if they might have redirected incoming concrete to the core while the weather was cold.

**ZippyTheChimp** · January 17th, 2011, 05:12 PM

Originally Posted by RKOwens44

It would be awesome if you could take another pic from that exact location like once every few months or so.

Let's see. April. Not 20 degrees. No clumsy gloves.

No problem.

**STR** · January 17th, 2011, 05:28 PM

Originally Posted by Daquan13

Seven gives a stunning reflection of Tower One!

All the buildings are going to reflect off each other. We might even be able discern reflections of reflections.

**Sherpa** · January 17th, 2011, 10:54 PM

.

**Daquan13** · January 18th, 2011, 01:05 AM

Nice 'then & now" pics that you posted, Zippy!

However, when I clicked on them to enlarge them, this bogus website popped up, claiming that my computer is affected by a virus, and started downloading a supposed virus scan, trying to force its way into my pc! Isn't that illegal for them to do that?

**scumonkey** · January 18th, 2011, 01:07 AM

It's not them that are doing that....

**Daquan13** · January 18th, 2011, 01:11 AM

It's coming from somewhere, and it is very annoying and aggravating!

I already have virus protection software installd. Why would I even want that?

Anyway, the pics are nice.

**STR** · January 18th, 2011, 03:21 AM

The ESB is really rough, but complete enough for a general comparison of the Empire State's (on average) 20x20 grid, vs Tower 1's composite core and 30 foot perimeter system. Average slab-to-slab floor height in ESB is 11'6, 1WTC's is 13'4.

**BrooklynLove** · January 18th, 2011, 06:51 AM

Originally Posted by Daquan13

It's coming from somewhere, and it is very annoying and aggravating!

I already have virus protection software installd. Why would I even want that?

Anyway, the pics are nice.

Ease off on the porn.

**Nomadd** · January 18th, 2011, 08:08 AM

Originally Posted by Daquan13

Nice 'then & now" pics that you posted, Zippy!

However, when I clicked on them to enlarge them, this bogus website popped up, claiming that my computer is affected by a virus, and started downloading a supposed virus scan, trying to force its way into my pc! Isn't that illegal for them to do that?

That "virus scan" is the virus Bubba. If it downloads it will just bring in more crap. It's the most popular Trojan out there. They'll try to blackmail you by demanding money to stop. Something as simple as Spybot will stop it. If it's serious, Spybot will reboot the computer and clean it out before the bad stuff has a chance to load.
Your existing virus software must be crap if it didn't stop this in the first place.

**Daquan13** · January 18th, 2011, 03:15 PM

Originally Posted by BrooklynLove

Ease off on the porn.

That is NOT porn!!

**Daquan13** · January 18th, 2011, 03:19 PM

Originally Posted by Nomadd

That "virus scan" is the virus Bubba. If it downloads it will just bring in more crap. It's the most popular Trojan out there. They'll try to blackmail you by demanding money to stop. Something as simple as Spybot will stop it. If it's serious, Spybot will reboot the computer and clean it out before the bad stuff has a chance to load.
Your existing virus software must be crap if it didn't stop this in the first place.

It's McAffee that I have. I'll run a system check and a virus scan.

Probably no firewall in place to stop it.

**ZenSteelDude** · January 18th, 2011, 06:15 PM

Originally Posted by tall

Does anyone know if the window washing unit runs on tracks between the glass.

The scaffold hangs from units up on the roof but there are tie in tracks between the glass pannels running vertically.

**ZenSteelDude** · January 18th, 2011, 06:18 PM

Originally Posted by Nomadd

I was helping the recycling effort my making empty beer cans last night with a concrete guy and he couldn't answer a question of mine, so I hoped somebody here might know.
Is the floor and core concrete different formulas? I was pretty sure that the minimum floor pouring temps were higher than minimum core pouring temps, since the core probably puts out quite a bit of heat while curing, and was wondering if they might have redirected incoming concrete to the core while the weather was cold.

The minimum psi of the core cement is MUCH higher than the floor slab cement and they are not interchangeable. Sure, they could use core cement for the slabs in a pinch, but it would be a waste of good money.

As far as I know there are no minimum pouring temps, they can pour in 20 degree below zero weather as long as the forms and rebar are pre-heated and they do have to take precautions against freezing before the 50% strength cure time. (I'm going from memory here so, I could be wrong. Concrete is a bit outside of my scope of expertise.)