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Old December 4th, 2012, 05:25 AM   #1601
thejacko5
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i looked at the charts for the AC500 a bit.

i reckon they have been running at around 116' of main (including a 13' lattice neck) and 157' of jib.

if that is true, and that 760d was around 150 feet out, that AC can pick around 70kips.

even if you convert to city charts, that ought to pick even the powerpack for the 1280.

someone more familiar with the site should check my measurements though.
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Old December 4th, 2012, 03:25 PM   #1602
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You might be right, because I don't see the AC500 moving anywhere west seeing how much stuff is stored over there. Plus the yellow outriggers (or whatever their name might be) for the new 1280 are already on site, so it's a bit late to move it.
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Old December 4th, 2012, 03:29 PM   #1603
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Second Crane

Looks like the pieces for the second crane base are on site.
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Old December 6th, 2012, 01:50 AM   #1604
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http://www.video-monitoring.com/cons...itv/silver.htm

The cam on top of 7 WTC has been repositioned! Hooray! The angle is different than before, but certainly better than staring at a wall. Can't wait for daylight to get a better view.
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Old December 6th, 2012, 05:30 AM   #1605
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Quote:
Originally Posted by MusicMan84 View Post
http://www.video-monitoring.com/cons...itv/silver.htm

The cam on top of 7 WTC has been repositioned! Hooray! The angle is different than before, but certainly better than staring at a wall. Can't wait for daylight to get a better view.
Thank you
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Old December 6th, 2012, 09:53 AM   #1606
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Great !
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Old December 6th, 2012, 02:26 PM   #1607
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Mast sections for the next 1280 have arrived.
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Old December 6th, 2012, 04:25 PM   #1608
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Quote:
Originally Posted by Rich-E36 View Post
Mast sections for the next 1280 have arrived.
Tower sections. I was making the same mistake for a while before I caught my self. The mast is the four legged part at the rear of the body that anchors the luffing line, the line that angles the boom up and down.
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Old December 7th, 2012, 08:20 AM   #1609
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Quote:
Originally Posted by PMadFlyer View Post
Tower sections. I was making the same mistake for a while before I caught my self. The mast is the four legged part at the rear of the body that anchors the luffing line, the line that angles the boom up and down.

Mast is referred to at the A Frame
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Old December 7th, 2012, 03:29 PM   #1610
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The AC500 is being dismantled, and the 1280 will finish erecting its sibling. I assumed it would not be able to do so, but the west crane is much more closer to the center of the oculus than the east one.
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Old December 7th, 2012, 03:34 PM   #1611
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the mast is the tower.

think of a ships mast.

you can reference section five of this document. http://www.nyc.gov/html/dob/downloads/pdf/cd2.pdf
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Old December 7th, 2012, 06:07 PM   #1612
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Pieces of the west abutment area are shorter -thus lighter- than the ones on the east area.
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Old December 7th, 2012, 08:56 PM   #1613
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Quote:
Originally Posted by thejacko5 View Post
the mast is the tower.

think of a ships mast.

you can reference section five of this document. http://www.nyc.gov/html/dob/downloads/pdf/cd2.pdf
Yep that's right, and the 4 legged bit referred to above in a previous post is the A frame. At least that's what we call it here
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Old December 7th, 2012, 11:32 PM   #1614
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Maybe it was just one of the crane product guides I was using. I swear I saw it reversed.
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Old December 8th, 2012, 12:03 AM   #1615
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Some times you see guys calling it a mast, some times they call it a tower. Some times it's a a-frame or some times it's a mast.

Personally if it's shaped like a A I will call it a A frame (or if it's on a tower crane since I always call the tower sections a mast)

Anyway back on topic- it is me or do the blue masts on the west look smaller then M1280's?
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Old December 8th, 2012, 12:47 AM   #1616
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Quote:
Originally Posted by Otie View Post
Pieces of the west abutment area are shorter -thus lighter- than the ones on the east area.
Is this asymmetry also the reason why the crane base (the yellow steel parts) are slightly asymmetric?
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Old December 8th, 2012, 02:47 AM   #1617
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another question.

If the major connections are in fact welded, should we expect to see a major temp shoring operation?

Im thinking yes, unless they have design some serious temp connection plates and bracing.
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Old December 8th, 2012, 03:29 AM   #1618
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Quote:
Originally Posted by 325ccr View Post
Anyway back on topic- it is me or do the blue masts on the west look smaller then M1280's?
It certainly looks smaller to me, and possibly more rectangular in shape.

What is the make/model of the corner crane for 3WTC? Its mast looks to be at least as big as the M1280's even though the crane itself appears quite a bit smaller.
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Old December 8th, 2012, 01:01 PM   #1619
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They're the same size. If you want to compare, here are two pictures of both mast section, with the same zoom. Keep in mind the west crane is further.

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Old December 8th, 2012, 02:39 PM   #1620
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^ Good stuff, must of been my eyes playing games with me. The T3 corner crane is a Link-Belt TG 2300
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