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Old April 20th, 2009, 07:15 AM   #8401
kingsc
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I wonder what their up to. Want about the second crane whens can I see it move up?
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Old April 20th, 2009, 07:53 AM   #8402
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Hopefully soon. The northern section of the core is getting to me. It's almost like it wants us to hate it. By the time it catches up to the southern section of the core, WTC Tower 4 may be taller than it.
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Old April 20th, 2009, 08:07 AM   #8403
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Tower 4 is taller then the north core, this isn't making any sense. That thing been reinforce but has move in who knows now long
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Old April 20th, 2009, 10:17 AM   #8404
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glad can see big progress its running now...
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Old April 21st, 2009, 12:57 AM   #8405
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Great shots jwalas, yer pics helped me confirm a few things I was wondering about, like that all the connections in the erecting steel are moment and shear. Things like that make it possible for that seemingly spindly steel to support the rather dynamic weight of a Favco and it's load (about 70 tons total, max.)


RKOwens, I figured out what those beams that looked like trusses are, they're temporary construction stairs. (see jwalas first pic on page 420)


No way no how is #4's foundation (some parts are about 24 feet high) higher than the north half of the core(about 40 feet high). Did anyone notice they were pouring cement on the north side this morning ?

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Old April 21st, 2009, 01:36 AM   #8406
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http://www.panynj.gov/wtcprogress/video_gallery.html

crane jump from diff angle
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Old April 21st, 2009, 02:13 AM   #8407
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OMG that got raised high
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Old April 21st, 2009, 03:27 AM   #8408
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Tower 4 may finish before Freedom Tower, assuming it continues at its current pace and avoids any of site’s financial mess. I would not entirely rule the possibility out.
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Old April 21st, 2009, 03:52 AM   #8409
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Quote:
Originally Posted by Onn View Post
Tower 4 may finish before Freedom Tower, assuming it continues at its current pace and avoids any of site’s financial mess. I would not entirely rule the possibility out.
Tower 4 has always been projected to finish before 1WTC. 4WTC (2012) vs. 1WTC (late 2013).
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Old April 21st, 2009, 05:00 AM   #8410
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Quote:
Originally Posted by spectre000 View Post
Tower 4 has always been projected to finish before 1WTC. 4WTC (2012) vs. 1WTC (late 2013).
It probably will, but I don't see that as being an embarassment to the Freedom Tower or anything like that. Remember, one of the smaller buildings already finished long before the Freedom Tower. It's called WTC7!
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Old April 21st, 2009, 08:45 AM   #8411
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this structural steel setup calls for a major portion of it to be concrete encased, take note of the s
heer connectors encrusting it, ....millions of them..,

Also great to see the crane(s) start jacking them self up.....as said before, real progress starting.
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Old April 21st, 2009, 08:50 AM   #8412
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wtcprogress.com reports the south crane rose 68 feet this weekend and is now 189 feet above street level.
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Old April 21st, 2009, 11:02 AM   #8413
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Glad to see that the crane jumped...It's a good sign of incoming progress...
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Old April 21st, 2009, 11:27 AM   #8414
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I understand this building is being built with strength as a high priority but it seems unusual to see the core steel frame in fairly light steel. I see other posts say the opposite ? I realize it is to be encased in concrete. We usually cast a slip formed reinforced concrete core with a steel frame connection to the solid core. This steel columns look way lighter than that for the original WTC ( See pic ) but they only had fragile core cladding. Sure they know better than I anyway, it's just an observation.

PS.....sorry to post pic of devastated WTC on this thread but edited it to show column size.
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Old April 21st, 2009, 07:11 PM   #8415
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There was a major concrete pour on the last basement floor on the south side of the site, either last night or this morning, according to the webcam.

http://www.earthcam.net/users2/inter...2&clientid=158
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Old April 21st, 2009, 09:02 PM   #8416
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suddenly the pace is picking up at the site init? and its is definately a pour on the south east corner.
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Old April 22nd, 2009, 01:31 AM   #8417
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Quote:
Originally Posted by redbaron_012 View Post
I understand this building is being built with strength as a high priority but it seems unusual to see the core steel frame in fairly light steel. I see other posts say the opposite ? I realize it is to be encased in concrete. We usually cast a slip formed reinforced concrete core with a steel frame connection to the solid core. This steel columns look way lighter than that for the original WTC ( See pic ) but they only had fragile core cladding. Sure they know better than I anyway, it's just an observation.
PS.....sorry to post pic of devastated WTC on this thread but edited it to show column size.
Since it's a completely different method of construction, I'm not sure if the differing size of columns has any real meaning.
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Old April 22nd, 2009, 01:59 AM   #8418
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The erecting steel (all that stuff on top of the core) is just there to hold up the floors and construction equipment untell the core is cast. It is not intended to take the weight of the entire tower just 4 or 5 floors.

TICONLA1 the term you are looking for is shear studs, and there are gona be millions of em.

Now that spring is here things should start pouring along.
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Old April 22nd, 2009, 06:53 PM   #8419
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Quote:
Originally Posted by Zensteeldude View Post
The erecting steel (all that stuff on top of the core) is just there to hold up the floors and construction equipment untell the core is cast. It is not intended to take the weight of the entire tower just 4 or 5 floors.

TICONLA1 the term you are looking for is shear studs, and there are gona be millions of em.

Now that spring is here things should start pouring along.
In fact, all morning there has been a concrete "hose" thing stretching from above the west slurry wall down INTO the museum, it looks like. Do you know what they are pouring, Zen? My guess would be the bedrock level of the museum, but I'd be surprised if they already started on the concrete (since the steel erection isn't even completed).
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Old April 23rd, 2009, 12:42 AM   #8420
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OMG that's trully cool
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