[Txdev]

I think tower cranes are less expensive than luffing cranes, but you can’t always use tower cranes because of the swing radius needed. Canopy crane had to be high enough to swing over lower roof of the Drury. There is a little trolley mechanism that moves back and forth along the boom to adjust where the load falls.

My understanding is that a luffing boom always has the load held at the end of the boom- there is no trolley that brings it back and forth. So you have to adjust the placement of the load by raising or lowering the boom, like you would with a fishing rod.

Probably in New York there are so many very tall buildings that it rarely makes sense to try to swing over the neighbors.

I think Floodgate will have to use a luffing boom.