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Thread: Vehicle Security Center (VSC) at World Trade Center

  1. #136

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    Another question for IrishInNYC:

    From the above photo, I don't see any tiebacks in the south wall along Cedar St, just buttressing. Is that because of 90 West St?

    How will this wall be permanently supported?

  2. #137
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    I'll take a crack at answering that - yes it is because of 90 West St. and those buttresses will remain.

  3. #138
    Moderator NYatKNIGHT's Avatar
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    Quote Originally Posted by lofter1 View Post
    There was some discussion a while back in this thread about the wall of the VSC that will be along West Street. No details of this area have been released, so where steps might be is a mystery.
    The pedestrian walkway over West St. ends at the park on the roof of the VSC, so the park is at that level. The VSC was recently re-worked to include ramps ascending from the northwest corner at West St. and up the middle south facade along Cedar St., but I'm still unsure of the way down on the east end.

  4. #139

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    Quote Originally Posted by lofter1 View Post
    There was some discussion a while back in this thread about the wall of the VSC that will be along West Street. No details of this area have been released, so where steps might be is a mystery.
    Thanks, Lofter.

  5. #140

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    The VSC structure is entirely below street level. You will be descending steps and/or ramps to access it. Above ground, between Liberty and Cedar Streets will be a park area (details of this are unclear). We have altered some footing designs in the bottom levels of the VSC to expedite construction progress and future loading is always an issue (planning for structures above that have not even been designed yet).
    We are currently encountering severe leaks in the west slurry wall that has impeded progress, however, all going to plan. First rock blast should be tomorrow, 5-3.

  6. #141

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    Quote Originally Posted by NYatKNIGHT View Post
    The pedestrian walkway over West St. ends at the park on the roof of the VSC, so the park is at that level. The VSC was recently re-worked to include ramps ascending from the northwest corner at West St. and up the middle south facade along Cedar St., but I'm still unsure of the way down on the east end.
    Currently, there is no east side access designed for the VSC. The finished entry and exits areas will be predominantly on Liberty St approx halfway between West and Greenwich; another, single vehicle exit/entry will be located at the corner of Cedar and Washington. When vehicles enter off Liberty St, they will turn east, down the helix before accessing the different levels (screening, parking etc).

  7. #142

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    Quote Originally Posted by ZippyTheChimp View Post
    Another question for IrishInNYC:

    From the above photo, I don't see any tiebacks in the south wall along Cedar St, just buttressing. Is that because of 90 West St?

    How will this wall be permanently supported?
    As NYatKNIGHT correctly stated, the buttresses will indeed remain permanently within the VSC and are there to support 90 West St. Tie backs could not be used as they would have interfered with the wooden pile supports on which 90 West St sits.

  8. #143

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    Click image for larger version. 

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ID:	12903Click image for larger version. 

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ID:	12902Before and after pictures of a rock blast in the VSC. Despite stringent vibration constraints at 90 West and the 1/9 Subway box...no problems so far.

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  10. #145
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    yesterday evening




  11. #146
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    @IrishInNYC

    Do you know how long the rock excavation will go on for?

  12. #147

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    Quote Originally Posted by 325ccr View Post
    @IrishInNYC

    Do you know how long the rock excavation will go on for?
    Expect to see a huge amount of it complete by early June. 4/5 blasts per day, at least 6 days a week. 35+loads coming out per day.

  13. #148
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    4/5 blasts per day, the people at 90 West must love that noise.

  14. #149

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    Not the blasts, they're muffled. The warning horns.

  15. #150

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    Quote Originally Posted by ZippyTheChimp View Post
    Not the blasts, they're muffled. The warning horns.
    Yes the horn is pretty sharp...we had to upgrade it to cut through the background noise on the site. The actual blasts should be relatively unobtrusive for the most part, they are pretty small and well smothered by mats.

    On the Phase 2 side the OCME has encountered quite a bit of WTC material including pieces of the original tower facades, reported fuselage from the planes and other "stuff" that I won't get into for decency's sake. There is also a lot of historical material at certain depths; pig bones, wood etc...will be interesting as we go down what we might find as 100% of the site is landfill.

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