South Station Tower | South Station Air Rights | Downtown

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Great shot. Very curious where the angled outcroppings arising from the lower arch structure will meet up with steel (one has some yellow ribbon on it, bottom center, for reference). I don't think anything is anchoring into the historic station roof or support system from what I recall, but maybe there's steel planned for the yellow-lined rectangular cutouts on the current trapezoidal roof?
 
Those may be where the upper level column grid meets the core, to avoid having columns drop through the passenger waiting area.

The precarious ladder from the roof to the core gives me the willies.
 
There are also similar concrete elements on the bus terminal side of the core. These basically serve to channel the majority of the tower loads into the concrete core to reduce the amount of steel columns going through the concourse/track area. I imagine we'll see some interesting steel work in the next couple floors as they build up the trusses/transfer girders. You can see some of the truss work starting on the summer street side.

In the same video I shared a couple pages back, if you pause at the ~57s mark and use the < & > keys to go frame by frame you can see how the steel comes diagonally off the core as you go up each floor. You can also match up the steel elements from the model with what we're seeing in the pictures above.
 
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chrisbrat said:
Dr. Rosen Rosen hitting them outta the park today with all these excellent, boots on the ground/up-close shots. Thank you sir!
Click to expand...
+1

I'm assuming a crane jump is imminent (maybe this weekend?); the current core is fast-approaching the base of the extension apparatus.
 
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