Quote:
Originally Posted by kayosthery
Dismantling that crane will be a major undertaking and Teng is probably being smart in putting it off as long as possible in hopes of a new developer taking over and using it.
A few possibilities:
1. At the very least either Upper Wacker or Clark will have to be shut down so that a 300+ ton crane can set-up there. If it's Clark, they'll have to look at what's underneath and possibly reinforce. If it's Wacker then...
2. They'll have to shut down Lower Wacker to possibly erect shoring towers to help handle the load imposed on the outriggers of the crane. Shutting down an Upper and Lower level of a major city street is a huge expense.
3. There is the possibility of erecting a derrick on the top level, but that will require a crane (see 1 and 2 above) to get it up there and major engineering work to determine if it can even do what's needed from that slab.
All of these cost major $ and I think Teng is better off asking for extensions and trying to sell the building and getting the new developer to work with Central on keeping the crane there.
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To use a derrick they'd have to redesign the top level, whatever that level would be. I thought the original plan, upon top out of the tower, was to climb down the crane as normal to the transfer level, which at 8' thick, was able to support the derrick for final removal. If there will be no 8' thick floor, a new design is needed. It's probably too high to be taken down from the street using a hydro.