Quote:
Originally Posted by tubeworm
The Corset (15 Hudson Yards) deserves its share of models:
Photo Credit: New York YIMBY
15 HY far right
Photo Credit: New York YIMBY
15 HY far right
Photo Credit: Field Condition
15 HY on the right, Culture Shed to the immediate east of 15 HY
I think this is a photo of where the Culture Shed will rise:
Photo Credit: chelseanow.com
Photo Published: December 4, 2013
Rebar for the Culture Shed? I think the Culture Tower should rise where the yellow digger is on that dirt mound. Correct me if I'm wrong!
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AFAIK, it is the rebar foundation slab/etc for the Culture She.
AFAIK, the exposed soil area is where the Culture Tower/15 HY will rise. I know of no officially stated date for tower start/completion, other than hudsonyardsnewyork.com's:
"The first two residential offerings, 15 Hudson Yards and 35 Hudson Yards, will be available within the next few years"
In addition the design studies for the now-under-construction Amtrak Gateway tunnel box state that the tunnel box will have to support the northern foundation loads of 15 HY. The diagram below is from the tunnel box design study, the tunnel box will contain two isolated RR tracks, hence the two square boxes within the rectangle in Figure 2-2. It's a study, so there are a few alternatives studied. The tunnel box, caissons, etc. will be in the blasted into bedrock trench that will be create din the excavation pit, shown further down in the post. This text form the study gives you an idea in the load differences in different tunnel box sections:
Quote:
Section A: The southwest end of the alignment, adjacent to Eleventh Avenue, is characterized by the high column loads imposed by the Overbuild Tower D [15 Hudson Yards] (10,000 kip column loads). The tunnel alignment is also at its deepest in this section.
Section AB: This section of the tunnel alignment is occupied by shop tracks serving the MOE Building and is characterized by multiple columns carrying the Overbuild platform only (2,000 kip loads).
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IIRC, the tunnel box will be finished within two years along with the 15 HY foundations within the tunnel box excavation itself.
So, really, I think 15 HY can only start rising in 2015, based upon completion of the tunnel box.
Based upon the frequently mentioned overbuild platform/structure foundation start date of January 2014 (& the status of the rail yard) I assume THAT overbuild foundation work will start within the Tutor-Perini controlled tunnel box construction area, just NOT within the excavation itself. See snippet of hardcoreshutterbug photo below. He took this photo from the Ohm apartment building looking north (and down).
The outlined in red area is the T-P controlled tunnel box area, the yellow excavator is starting excavation of the soil within the excavation box pit that is defined by the grayish white secant pile perimeter wall. The yellow auger drill at top right has been working on creating the secant pile perimeter Support-Of-Excavation wall. AFAIK, the perimeter wall was still incomplete on the 12-2-2013 photo date. The VERY active LIRR train yard is north of the top red line; once the off-screen ramp to 10th Ave is demolished the main measn of access to the the red outlines area will be driving underneath the 11th Ave viaduct on the left. I assume that path will be taken by the muck trucks removing the blasted bedrock once the excavation reaches bedrock sometime next year.
For reference, the "dirt mound" (really a dirt ramp & dirt pit) in tubeworm's
"Culture Tower should rise where the yellow digger is on that dirt mound" is south of the bottom left corner of the photo. That dirt mound area is part of the OTHER "terra-firma" Tutor-Perini controlled construction area, part of which is shown in the bottom right of the photo.
So, the 15 HY foundations will go in the left side of the red outlined area and in the "dirt mound" area of the photo in tubeworm's post.
The 15 HY foundations in the tunnel box area will be (STURDY) columns rising between the LIRR tracks that T-P will restore on the fill once they build the tunnel box/overbuild platform-structure caissons and bury it with fill. LIRR tracks were removed (& LIRR functions relocated) to make room for the tunnel box construction area
original photo hardcoreshutterbox
http://www.flickr.com/photos/hardcor...g/11180452394/
And last, the ZD1 diagram for the South tower that was filed with NYC 13 months ago that might show the relationship between the concrete/rebar section of terra-firma and the dirt/ramp & pit at the SW corner of this super-block (NE corner of 11th Ave & High Line). I think the dirt pit/Concrete-rebar line is defined by the Culture Shed platform/plaza/whatever to the right of the text "ELEVENTH AVE. SIDEWALK LINE 5' FROM etc.". The west side of the actual South Tower is on the snip's right, bottom for reference