Interestingly, there are cases where a “support crane” is made to lift crane components up to a higher altitude where a different “primary crane” can be to do t

Interestingly, there are cases where a “support crane” is made to lift crane components up to a higher altitude where a different “primary crane” can be to do the remainder of the heavy lifting. At that point the listing can theoretically be efficiently parallelized, with two items being able to be hoisted at any given moment. This technique famously remodeled the iconic Tiffany building in NyC. https://www.mgmclaren.com/projects/crane-lift-at-tiffanys/ https://www.mgmclaren.com/projects/crane-lift-at-tiffanys/