Barclays Center freight elevators: each can carry a loaded semitruck (2015) [pdf]

Very interesting read.

I was confused about the specific location the document desribes. "They enable semi-truck or bus drivers to drive straight into either elevator from the intersection of Atlantic and Flatbush avenues on the southeast side of the arena."

At the intersection of Atlantic and Flatbush is a large pedestrian plaza and the main entrance to the building, they would have a hard time driving a truck through there. The actual entrance is on Dean Street (and indeed at the southeast corner of the arena):

https://www.google.com/maps/@40.6816292,-73.9748135,3a,75y,6...

Video of them in action, including the 100,000lb turntable here: https://www.youtube.com/watch?v=Rm19yMKVqOs